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7772 |
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| 'use strict';
function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
var lie = _interopDefault(require('lie'));
var getArguments = _interopDefault(require('argsarray'));
var events = require('events');
var inherits = _interopDefault(require('inherits'));
var nextTick = _interopDefault(require('immediate'));
var debug = _interopDefault(require('debug'));
var Md5 = _interopDefault(require('spark-md5'));
/* istanbul ignore next */
var PouchPromise = typeof Promise === 'function' ? Promise : lie;
function isBinaryObject(object) {
return (typeof ArrayBuffer !== 'undefined' && object instanceof ArrayBuffer) ||
(typeof Blob !== 'undefined' && object instanceof Blob);
}
function cloneArrayBuffer(buff) {
if (typeof buff.slice === 'function') {
return buff.slice(0);
}
// IE10-11 slice() polyfill
var target = new ArrayBuffer(buff.byteLength);
var targetArray = new Uint8Array(target);
var sourceArray = new Uint8Array(buff);
targetArray.set(sourceArray);
return target;
}
function cloneBinaryObject(object) {
if (object instanceof ArrayBuffer) {
return cloneArrayBuffer(object);
}
var size = object.size;
var type = object.type;
// Blob
if (typeof object.slice === 'function') {
return object.slice(0, size, type);
}
// PhantomJS slice() replacement
return object.webkitSlice(0, size, type);
}
// most of this is borrowed from lodash.isPlainObject:
// https://github.com/fis-components/lodash.isplainobject/
// blob/29c358140a74f252aeb08c9eb28bef86f2217d4a/index.js
var funcToString = Function.prototype.toString;
var objectCtorString = funcToString.call(Object);
function isPlainObject(value) {
var proto = Object.getPrototypeOf(value);
/* istanbul ignore if */
if (proto === null) { // not sure when this happens, but I guess it can
return true;
}
var Ctor = proto.constructor;
return (typeof Ctor == 'function' &&
Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString);
}
function clone(object) {
var newObject;
var i;
var len;
if (!object || typeof object !== 'object') {
return object;
}
if (Array.isArray(object)) {
newObject = [];
for (i = 0, len = object.length; i < len; i++) {
newObject[i] = clone(object[i]);
}
return newObject;
}
// special case: to avoid inconsistencies between IndexedDB
// and other backends, we automatically stringify Dates
if (object instanceof Date) {
return object.toISOString();
}
if (isBinaryObject(object)) {
return cloneBinaryObject(object);
}
if (!isPlainObject(object)) {
return object; // don't clone objects like Workers
}
newObject = {};
for (i in object) {
/* istanbul ignore else */
if (Object.prototype.hasOwnProperty.call(object, i)) {
var value = clone(object[i]);
if (typeof value !== 'undefined') {
newObject[i] = value;
}
}
}
return newObject;
}
function once(fun) {
var called = false;
return getArguments(function (args) {
/* istanbul ignore if */
if (called) {
// this is a smoke test and should never actually happen
throw new Error('once called more than once');
} else {
called = true;
fun.apply(this, args);
}
});
}
function toPromise(func) {
//create the function we will be returning
return getArguments(function (args) {
// Clone arguments
args = clone(args);
var self = this;
// if the last argument is a function, assume its a callback
var usedCB = (typeof args[args.length - 1] === 'function') ? args.pop() : false;
var promise = new PouchPromise(function (fulfill, reject) {
var resp;
try {
var callback = once(function (err, mesg) {
if (err) {
reject(err);
} else {
fulfill(mesg);
}
});
// create a callback for this invocation
// apply the function in the orig context
args.push(callback);
resp = func.apply(self, args);
if (resp && typeof resp.then === 'function') {
fulfill(resp);
}
} catch (e) {
reject(e);
}
});
// if there is a callback, call it back
if (usedCB) {
promise.then(function (result) {
usedCB(null, result);
}, usedCB);
}
return promise;
});
}
function logApiCall(self, name, args) {
/* istanbul ignore if */
if (self.constructor.listeners('debug').length) {
var logArgs = ['api', self.name, name];
for (var i = 0; i < args.length - 1; i++) {
logArgs.push(args[i]);
}
self.constructor.emit('debug', logArgs);
// override the callback itself to log the response
var origCallback = args[args.length - 1];
args[args.length - 1] = function (err, res) {
var responseArgs = ['api', self.name, name];
responseArgs = responseArgs.concat(
err ? ['error', err] : ['success', res]
);
self.constructor.emit('debug', responseArgs);
origCallback(err, res);
};
}
}
function adapterFun(name, callback) {
return toPromise(getArguments(function (args) {
if (this._closed) {
return PouchPromise.reject(new Error('database is closed'));
}
if (this._destroyed) {
return PouchPromise.reject(new Error('database is destroyed'));
}
var self = this;
logApiCall(self, name, args);
if (!this.taskqueue.isReady) {
return new PouchPromise(function (fulfill, reject) {
self.taskqueue.addTask(function (failed) {
if (failed) {
reject(failed);
} else {
fulfill(self[name].apply(self, args));
}
});
});
}
return callback.apply(this, args);
}));
}
function mangle(key) {
return '$' + key;
}
function unmangle(key) {
return key.substring(1);
}
function Map$1() {
this._store = {};
}
Map$1.prototype.get = function (key) {
var mangled = mangle(key);
return this._store[mangled];
};
Map$1.prototype.set = function (key, value) {
var mangled = mangle(key);
this._store[mangled] = value;
return true;
};
Map$1.prototype.has = function (key) {
var mangled = mangle(key);
return mangled in this._store;
};
Map$1.prototype.delete = function (key) {
var mangled = mangle(key);
var res = mangled in this._store;
delete this._store[mangled];
return res;
};
Map$1.prototype.forEach = function (cb) {
var keys = Object.keys(this._store);
for (var i = 0, len = keys.length; i < len; i++) {
var key = keys[i];
var value = this._store[key];
key = unmangle(key);
cb(value, key);
}
};
Object.defineProperty(Map$1.prototype, 'size', {
get: function () {
return Object.keys(this._store).length;
}
});
function Set$1(array) {
this._store = new Map$1();
// init with an array
if (array && Array.isArray(array)) {
for (var i = 0, len = array.length; i < len; i++) {
this.add(array[i]);
}
}
}
Set$1.prototype.add = function (key) {
return this._store.set(key, true);
};
Set$1.prototype.has = function (key) {
return this._store.has(key);
};
Set$1.prototype.forEach = function (cb) {
this._store.forEach(function (value, key) {
cb(key);
});
};
Object.defineProperty(Set$1.prototype, 'size', {
get: function () {
return this._store.size;
}
});
/* global Map,Set,Symbol */
// Based on https://kangax.github.io/compat-table/es6/ we can sniff out
// incomplete Map/Set implementations which would otherwise cause our tests to fail.
// Notably they fail in IE11 and iOS 8.4, which this prevents.
function supportsMapAndSet() {
Iif (typeof Symbol === 'undefined' || typeof Map === 'undefined' || typeof Set === 'undefined') {
return false;
}
var prop = Object.getOwnPropertyDescriptor(Map, Symbol.species);
return prop && 'get' in prop && Map[Symbol.species] === Map;
}
// based on https://github.com/montagejs/collections
/* global Map,Set */
var ExportedSet;
var ExportedMap;
{
Eif (supportsMapAndSet()) { // prefer built-in Map/Set
ExportedSet = Set;
ExportedMap = Map;
} else { // fall back to our polyfill
ExportedSet = Set$1;
ExportedMap = Map$1;
}
}
// like underscore/lodash _.pick()
function pick(obj, arr) {
var res = {};
for (var i = 0, len = arr.length; i < len; i++) {
var prop = arr[i];
if (prop in obj) {
res[prop] = obj[prop];
}
}
return res;
}
// Most browsers throttle concurrent requests at 6, so it's silly
// to shim _bulk_get by trying to launch potentially hundreds of requests
// and then letting the majority time out. We can handle this ourselves.
var MAX_NUM_CONCURRENT_REQUESTS = 6;
function identityFunction(x) {
return x;
}
function formatResultForOpenRevsGet(result) {
return [{
ok: result
}];
}
// shim for P/CouchDB adapters that don't directly implement _bulk_get
function bulkGet(db, opts, callback) {
var requests = opts.docs;
// consolidate into one request per doc if possible
var requestsById = new ExportedMap();
requests.forEach(function (request) {
if (requestsById.has(request.id)) {
requestsById.get(request.id).push(request);
} else {
requestsById.set(request.id, [request]);
}
});
var numDocs = requestsById.size;
var numDone = 0;
var perDocResults = new Array(numDocs);
function collapseResultsAndFinish() {
var results = [];
perDocResults.forEach(function (res) {
res.docs.forEach(function (info) {
results.push({
id: res.id,
docs: [info]
});
});
});
callback(null, {results: results});
}
function checkDone() {
if (++numDone === numDocs) {
collapseResultsAndFinish();
}
}
function gotResult(docIndex, id, docs) {
perDocResults[docIndex] = {id: id, docs: docs};
checkDone();
}
var allRequests = [];
requestsById.forEach(function (value, key) {
allRequests.push(key);
});
var i = 0;
function nextBatch() {
if (i >= allRequests.length) {
return;
}
var upTo = Math.min(i + MAX_NUM_CONCURRENT_REQUESTS, allRequests.length);
var batch = allRequests.slice(i, upTo);
processBatch(batch, i);
i += batch.length;
}
function processBatch(batch, offset) {
batch.forEach(function (docId, j) {
var docIdx = offset + j;
var docRequests = requestsById.get(docId);
// just use the first request as the "template"
// TODO: The _bulk_get API allows for more subtle use cases than this,
// but for now it is unlikely that there will be a mix of different
// "atts_since" or "attachments" in the same request, since it's just
// replicate.js that is using this for the moment.
// Also, atts_since is aspirational, since we don't support it yet.
var docOpts = pick(docRequests[0], ['atts_since', 'attachments']);
docOpts.open_revs = docRequests.map(function (request) {
// rev is optional, open_revs disallowed
return request.rev;
});
// remove falsey / undefined revisions
docOpts.open_revs = docOpts.open_revs.filter(identityFunction);
var formatResult = identityFunction;
if (docOpts.open_revs.length === 0) {
delete docOpts.open_revs;
// when fetching only the "winning" leaf,
// transform the result so it looks like an open_revs
// request
formatResult = formatResultForOpenRevsGet;
}
// globally-supplied options
['revs', 'attachments', 'binary', 'ajax', 'latest'].forEach(function (param) {
if (param in opts) {
docOpts[param] = opts[param];
}
});
db.get(docId, docOpts, function (err, res) {
var result;
/* istanbul ignore if */
if (err) {
result = [{error: err}];
} else {
result = formatResult(res);
}
gotResult(docIdx, docId, result);
nextBatch();
});
});
}
nextBatch();
}
function isChromeApp() {
return (typeof chrome !== "undefined" &&
typeof chrome.storage !== "undefined" &&
typeof chrome.storage.local !== "undefined");
}
var hasLocal;
Iif (isChromeApp()) {
hasLocal = false;
} else {
try {
localStorage.setItem('_pouch_check_localstorage', 1);
hasLocal = !!localStorage.getItem('_pouch_check_localstorage');
} catch (e) {
hasLocal = false;
}
}
function hasLocalStorage() {
return hasLocal;
}
// Custom nextTick() shim for browsers. In node, this will just be process.nextTick(). We
// avoid using process.nextTick() directly because the polyfill is very large and we don't
// need all of it (see: https://github.com/defunctzombie/node-process).
// "immediate" 3.0.8 is used by lie, and it's a smaller version of the latest "immediate"
// package, so it's the one we use.
// When we use nextTick() in our codebase, we only care about not releasing Zalgo
// (see: http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony).
// Microtask vs macrotask doesn't matter to us. So we're free to use the fastest
// (least latency) option, which is "immediate" due to use of microtasks.
// All of our nextTicks are isolated to this one function so we can easily swap out one
// implementation for another.
inherits(Changes$1, events.EventEmitter);
/* istanbul ignore next */
function attachBrowserEvents(self) {
Iif (isChromeApp()) {
chrome.storage.onChanged.addListener(function (e) {
// make sure it's event addressed to us
if (e.db_name != null) {
//object only has oldValue, newValue members
self.emit(e.dbName.newValue);
}
});
} else Iif (hasLocalStorage()) {
if (typeof addEventListener !== 'undefined') {
addEventListener("storage", function (e) {
self.emit(e.key);
});
} else { // old IE
window.attachEvent("storage", function (e) {
self.emit(e.key);
});
}
}
}
function Changes$1() {
events.EventEmitter.call(this);
this._listeners = {};
attachBrowserEvents(this);
}
Changes$1.prototype.addListener = function (dbName, id, db, opts) {
/* istanbul ignore if */
if (this._listeners[id]) {
return;
}
var self = this;
var inprogress = false;
function eventFunction() {
/* istanbul ignore if */
if (!self._listeners[id]) {
return;
}
if (inprogress) {
inprogress = 'waiting';
return;
}
inprogress = true;
var changesOpts = pick(opts, [
'style', 'include_docs', 'attachments', 'conflicts', 'filter',
'doc_ids', 'view', 'since', 'query_params', 'binary'
]);
/* istanbul ignore next */
function onError() {
inprogress = false;
}
db.changes(changesOpts).on('change', function (c) {
if (c.seq > opts.since && !opts.cancelled) {
opts.since = c.seq;
opts.onChange(c);
}
}).on('complete', function () {
if (inprogress === 'waiting') {
nextTick(eventFunction);
}
inprogress = false;
}).on('error', onError);
}
this._listeners[id] = eventFunction;
this.on(dbName, eventFunction);
};
Changes$1.prototype.removeListener = function (dbName, id) {
/* istanbul ignore if */
if (!(id in this._listeners)) {
return;
}
events.EventEmitter.prototype.removeListener.call(this, dbName,
this._listeners[id]);
delete this._listeners[id];
};
/* istanbul ignore next */
Changes$1.prototype.notifyLocalWindows = function (dbName) {
//do a useless change on a storage thing
//in order to get other windows's listeners to activate
if (isChromeApp()) {
chrome.storage.local.set({dbName: dbName});
} else if (hasLocalStorage()) {
localStorage[dbName] = (localStorage[dbName] === "a") ? "b" : "a";
}
};
Changes$1.prototype.notify = function (dbName) {
this.emit(dbName);
this.notifyLocalWindows(dbName);
};
function guardedConsole(method) {
/* istanbul ignore else */
if (console !== 'undefined' && method in console) {
var args = Array.prototype.slice.call(arguments, 1);
console[method].apply(console, args);
}
}
function randomNumber(min, max) {
var maxTimeout = 600000; // Hard-coded default of 10 minutes
min = parseInt(min, 10) || 0;
max = parseInt(max, 10);
if (max !== max || max <= min) {
max = (min || 1) << 1; //doubling
} else {
max = max + 1;
}
// In order to not exceed maxTimeout, pick a random value between half of maxTimeout and maxTimeout
if (max > maxTimeout) {
min = maxTimeout >> 1; // divide by two
max = maxTimeout;
}
var ratio = Math.random();
var range = max - min;
return ~~(range * ratio + min); // ~~ coerces to an int, but fast.
}
function defaultBackOff(min) {
var max = 0;
if (!min) {
max = 2000;
}
return randomNumber(min, max);
}
// designed to give info to browser users, who are disturbed
// when they see http errors in the console
function explainError(status, str) {
guardedConsole('info', 'The above ' + status + ' is totally normal. ' + str);
}
var assign;
{
Eif (typeof Object.assign === 'function') {
assign = Object.assign;
} else {
// lite Object.assign polyfill based on
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
assign = function (target) {
var to = Object(target);
for (var index = 1; index < arguments.length; index++) {
var nextSource = arguments[index];
if (nextSource != null) { // Skip over if undefined or null
for (var nextKey in nextSource) {
// Avoid bugs when hasOwnProperty is shadowed
if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
to[nextKey] = nextSource[nextKey];
}
}
}
}
return to;
};
}
}
var $inject_Object_assign = assign;
inherits(PouchError, Error);
function PouchError(status, error, reason) {
Error.call(this, reason);
this.status = status;
this.name = error;
this.message = reason;
this.error = true;
}
PouchError.prototype.toString = function () {
return JSON.stringify({
status: this.status,
name: this.name,
message: this.message,
reason: this.reason
});
};
var UNAUTHORIZED = new PouchError(401, 'unauthorized', "Name or password is incorrect.");
var MISSING_BULK_DOCS = new PouchError(400, 'bad_request', "Missing JSON list of 'docs'");
var MISSING_DOC = new PouchError(404, 'not_found', 'missing');
var REV_CONFLICT = new PouchError(409, 'conflict', 'Document update conflict');
var INVALID_ID = new PouchError(400, 'bad_request', '_id field must contain a string');
var MISSING_ID = new PouchError(412, 'missing_id', '_id is required for puts');
var RESERVED_ID = new PouchError(400, 'bad_request', 'Only reserved document ids may start with underscore.');
var NOT_OPEN = new PouchError(412, 'precondition_failed', 'Database not open');
var UNKNOWN_ERROR = new PouchError(500, 'unknown_error', 'Database encountered an unknown error');
var BAD_ARG = new PouchError(500, 'badarg', 'Some query argument is invalid');
var INVALID_REQUEST = new PouchError(400, 'invalid_request', 'Request was invalid');
var QUERY_PARSE_ERROR = new PouchError(400, 'query_parse_error', 'Some query parameter is invalid');
var DOC_VALIDATION = new PouchError(500, 'doc_validation', 'Bad special document member');
var BAD_REQUEST = new PouchError(400, 'bad_request', 'Something wrong with the request');
var NOT_AN_OBJECT = new PouchError(400, 'bad_request', 'Document must be a JSON object');
var DB_MISSING = new PouchError(404, 'not_found', 'Database not found');
var IDB_ERROR = new PouchError(500, 'indexed_db_went_bad', 'unknown');
var WSQ_ERROR = new PouchError(500, 'web_sql_went_bad', 'unknown');
var LDB_ERROR = new PouchError(500, 'levelDB_went_went_bad', 'unknown');
var FORBIDDEN = new PouchError(403, 'forbidden', 'Forbidden by design doc validate_doc_update function');
var INVALID_REV = new PouchError(400, 'bad_request', 'Invalid rev format');
var FILE_EXISTS = new PouchError(412, 'file_exists', 'The database could not be created, the file already exists.');
var MISSING_STUB = new PouchError(412, 'missing_stub', 'A pre-existing attachment stub wasn\'t found');
var INVALID_URL = new PouchError(413, 'invalid_url', 'Provided URL is invalid');
function createError(error, reason) {
function CustomPouchError(reason) {
// inherit error properties from our parent error manually
// so as to allow proper JSON parsing.
/* jshint ignore:start */
for (var p in error) {
if (typeof error[p] !== 'function') {
this[p] = error[p];
}
}
/* jshint ignore:end */
if (reason !== undefined) {
this.reason = reason;
}
}
CustomPouchError.prototype = PouchError.prototype;
return new CustomPouchError(reason);
}
function generateErrorFromResponse(err) {
if (typeof err !== 'object') {
var data = err;
err = UNKNOWN_ERROR;
err.data = data;
}
if ('error' in err && err.error === 'conflict') {
err.name = 'conflict';
err.status = 409;
}
if (!('name' in err)) {
err.name = err.error || 'unknown';
}
if (!('status' in err)) {
err.status = 500;
}
if (!('message' in err)) {
err.message = err.message || err.reason;
}
return err;
}
function tryFilter(filter, doc, req) {
try {
return !filter(doc, req);
} catch (err) {
var msg = 'Filter function threw: ' + err.toString();
return createError(BAD_REQUEST, msg);
}
}
function filterChange(opts) {
var req = {};
var hasFilter = opts.filter && typeof opts.filter === 'function';
req.query = opts.query_params;
return function filter(change) {
if (!change.doc) {
// CSG sends events on the changes feed that don't have documents,
// this hack makes a whole lot of existing code robust.
change.doc = {};
}
var filterReturn = hasFilter && tryFilter(opts.filter, change.doc, req);
if (typeof filterReturn === 'object') {
return filterReturn;
}
if (filterReturn) {
return false;
}
if (!opts.include_docs) {
delete change.doc;
} else if (!opts.attachments) {
for (var att in change.doc._attachments) {
/* istanbul ignore else */
if (change.doc._attachments.hasOwnProperty(att)) {
change.doc._attachments[att].stub = true;
}
}
}
return true;
};
}
function flatten(arrs) {
var res = [];
for (var i = 0, len = arrs.length; i < len; i++) {
res = res.concat(arrs[i]);
}
return res;
}
// shim for Function.prototype.name,
// for browsers that don't support it like IE
/* istanbul ignore next */
function f() {}
var hasName = f.name;
var res;
// We dont run coverage in IE
/* istanbul ignore else */
Eif (hasName) {
res = function (fun) {
return fun.name;
};
} else {
res = function (fun) {
return fun.toString().match(/^\s*function\s*(\S*)\s*\(/)[1];
};
}
// Determine id an ID is valid
// - invalid IDs begin with an underescore that does not begin '_design' or
// '_local'
// - any other string value is a valid id
// Returns the specific error object for each case
function invalidIdError(id) {
var err;
if (!id) {
err = createError(MISSING_ID);
} else if (typeof id !== 'string') {
err = createError(INVALID_ID);
} else if (/^_/.test(id) && !(/^_(design|local)/).test(id)) {
err = createError(RESERVED_ID);
}
if (err) {
throw err;
}
}
// Checks if a PouchDB object is "remote" or not. This is
// designed to opt-in to certain optimizations, such as
// avoiding checks for "dependentDbs" and other things that
// we know only apply to local databases. In general, "remote"
// should be true for the http adapter, and for third-party
// adapters with similar expensive boundaries to cross for
// every API call, such as socket-pouch and worker-pouch.
// Previously, this was handled via db.type() === 'http'
// which is now deprecated.
function isRemote(db) {
if (typeof db._remote === 'boolean') {
return db._remote;
}
/* istanbul ignore next */
if (typeof db.type === 'function') {
guardedConsole('warn',
'db.type() is deprecated and will be removed in ' +
'a future version of PouchDB');
return db.type() === 'http';
}
/* istanbul ignore next */
return false;
}
function listenerCount(ee, type) {
return 'listenerCount' in ee ? ee.listenerCount(type) :
events.EventEmitter.listenerCount(ee, type);
}
function parseDesignDocFunctionName(s) {
if (!s) {
return null;
}
var parts = s.split('/');
if (parts.length === 2) {
return parts;
}
if (parts.length === 1) {
return [s, s];
}
return null;
}
function normalizeDesignDocFunctionName(s) {
var normalized = parseDesignDocFunctionName(s);
return normalized ? normalized.join('/') : null;
}
// originally parseUri 1.2.2, now patched by us
// (c) Steven Levithan <stevenlevithan.com>
// MIT License
var keys = ["source", "protocol", "authority", "userInfo", "user", "password",
"host", "port", "relative", "path", "directory", "file", "query", "anchor"];
var qName ="queryKey";
var qParser = /(?:^|&)([^&=]*)=?([^&]*)/g;
// use the "loose" parser
/* jshint maxlen: false */
var parser = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
function parseUri(str) {
var m = parser.exec(str);
var uri = {};
var i = 14;
while (i--) {
var key = keys[i];
var value = m[i] || "";
var encoded = ['user', 'password'].indexOf(key) !== -1;
uri[key] = encoded ? decodeURIComponent(value) : value;
}
uri[qName] = {};
uri[keys[12]].replace(qParser, function ($0, $1, $2) {
if ($1) {
uri[qName][$1] = $2;
}
});
return uri;
}
// Based on https://github.com/alexdavid/scope-eval v0.0.3
// (source: https://unpkg.com/scope-eval@0.0.3/scope_eval.js)
// This is basically just a wrapper around new Function()
function scopeEval(source, scope) {
var keys = [];
var values = [];
for (var key in scope) {
if (scope.hasOwnProperty(key)) {
keys.push(key);
values.push(scope[key]);
}
}
keys.push(source);
return Function.apply(null, keys).apply(null, values);
}
// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
// the diffFun tells us what delta to apply to the doc. it either returns
// the doc, or false if it doesn't need to do an update after all
function upsert(db, docId, diffFun) {
return new PouchPromise(function (fulfill, reject) {
db.get(docId, function (err, doc) {
if (err) {
/* istanbul ignore next */
if (err.status !== 404) {
return reject(err);
}
doc = {};
}
// the user might change the _rev, so save it for posterity
var docRev = doc._rev;
var newDoc = diffFun(doc);
if (!newDoc) {
// if the diffFun returns falsy, we short-circuit as
// an optimization
return fulfill({updated: false, rev: docRev});
}
// users aren't allowed to modify these values,
// so reset them here
newDoc._id = docId;
newDoc._rev = docRev;
fulfill(tryAndPut(db, newDoc, diffFun));
});
});
}
function tryAndPut(db, doc, diffFun) {
return db.put(doc).then(function (res) {
return {
updated: true,
rev: res.rev
};
}, function (err) {
/* istanbul ignore next */
if (err.status !== 409) {
throw err;
}
return upsert(db, doc._id, diffFun);
});
}
// BEGIN Math.uuid.js
/*!
Math.uuid.js (v1.4)
http://www.broofa.com
mailto:robert@broofa.com
Copyright (c) 2010 Robert Kieffer
Dual licensed under the MIT and GPL licenses.
*/
/*
* Generate a random uuid.
*
* USAGE: Math.uuid(length, radix)
* length - the desired number of characters
* radix - the number of allowable values for each character.
*
* EXAMPLES:
* // No arguments - returns RFC4122, version 4 ID
* >>> Math.uuid()
* "92329D39-6F5C-4520-ABFC-AAB64544E172"
*
* // One argument - returns ID of the specified length
* >>> Math.uuid(15) // 15 character ID (default base=62)
* "VcydxgltxrVZSTV"
*
* // Two arguments - returns ID of the specified length, and radix.
* // (Radix must be <= 62)
* >>> Math.uuid(8, 2) // 8 character ID (base=2)
* "01001010"
* >>> Math.uuid(8, 10) // 8 character ID (base=10)
* "47473046"
* >>> Math.uuid(8, 16) // 8 character ID (base=16)
* "098F4D35"
*/
var chars = (
'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
'abcdefghijklmnopqrstuvwxyz'
).split('');
function getValue(radix) {
return 0 | Math.random() * radix;
}
function uuid(len, radix) {
radix = radix || chars.length;
var out = '';
var i = -1;
if (len) {
// Compact form
while (++i < len) {
out += chars[getValue(radix)];
}
return out;
}
// rfc4122, version 4 form
// Fill in random data. At i==19 set the high bits of clock sequence as
// per rfc4122, sec. 4.1.5
while (++i < 36) {
switch (i) {
case 8:
case 13:
case 18:
case 23:
out += '-';
break;
case 19:
out += chars[(getValue(16) & 0x3) | 0x8];
break;
default:
out += chars[getValue(16)];
}
}
return out;
}
// We fetch all leafs of the revision tree, and sort them based on tree length
// and whether they were deleted, undeleted documents with the longest revision
// tree (most edits) win
// The final sort algorithm is slightly documented in a sidebar here:
// http://guide.couchdb.org/draft/conflicts.html
function winningRev(metadata) {
var winningId;
var winningPos;
var winningDeleted;
var toVisit = metadata.rev_tree.slice();
var node;
while ((node = toVisit.pop())) {
var tree = node.ids;
var branches = tree[2];
var pos = node.pos;
if (branches.length) { // non-leaf
for (var i = 0, len = branches.length; i < len; i++) {
toVisit.push({pos: pos + 1, ids: branches[i]});
}
continue;
}
var deleted = !!tree[1].deleted;
var id = tree[0];
// sort by deleted, then pos, then id
if (!winningId || (winningDeleted !== deleted ? winningDeleted :
winningPos !== pos ? winningPos < pos : winningId < id)) {
winningId = id;
winningPos = pos;
winningDeleted = deleted;
}
}
return winningPos + '-' + winningId;
}
// Pretty much all below can be combined into a higher order function to
// traverse revisions
// The return value from the callback will be passed as context to all
// children of that node
function traverseRevTree(revs, callback) {
var toVisit = revs.slice();
var node;
while ((node = toVisit.pop())) {
var pos = node.pos;
var tree = node.ids;
var branches = tree[2];
var newCtx =
callback(branches.length === 0, pos, tree[0], node.ctx, tree[1]);
for (var i = 0, len = branches.length; i < len; i++) {
toVisit.push({pos: pos + 1, ids: branches[i], ctx: newCtx});
}
}
}
function sortByPos(a, b) {
return a.pos - b.pos;
}
function collectLeaves(revs) {
var leaves = [];
traverseRevTree(revs, function (isLeaf, pos, id, acc, opts) {
if (isLeaf) {
leaves.push({rev: pos + "-" + id, pos: pos, opts: opts});
}
});
leaves.sort(sortByPos).reverse();
for (var i = 0, len = leaves.length; i < len; i++) {
delete leaves[i].pos;
}
return leaves;
}
// returns revs of all conflicts that is leaves such that
// 1. are not deleted and
// 2. are different than winning revision
function collectConflicts(metadata) {
var win = winningRev(metadata);
var leaves = collectLeaves(metadata.rev_tree);
var conflicts = [];
for (var i = 0, len = leaves.length; i < len; i++) {
var leaf = leaves[i];
if (leaf.rev !== win && !leaf.opts.deleted) {
conflicts.push(leaf.rev);
}
}
return conflicts;
}
// build up a list of all the paths to the leafs in this revision tree
function rootToLeaf(revs) {
var paths = [];
var toVisit = revs.slice();
var node;
while ((node = toVisit.pop())) {
var pos = node.pos;
var tree = node.ids;
var id = tree[0];
var opts = tree[1];
var branches = tree[2];
var isLeaf = branches.length === 0;
var history = node.history ? node.history.slice() : [];
history.push({id: id, opts: opts});
if (isLeaf) {
paths.push({pos: (pos + 1 - history.length), ids: history});
}
for (var i = 0, len = branches.length; i < len; i++) {
toVisit.push({pos: pos + 1, ids: branches[i], history: history});
}
}
return paths.reverse();
}
// for a better overview of what this is doing, read:
// https://github.com/apache/couchdb-couch/blob/master/src/couch_key_tree.erl
//
// But for a quick intro, CouchDB uses a revision tree to store a documents
// history, A -> B -> C, when a document has conflicts, that is a branch in the
// tree, A -> (B1 | B2 -> C), We store these as a nested array in the format
//
// KeyTree = [Path ... ]
// Path = {pos: position_from_root, ids: Tree}
// Tree = [Key, Opts, [Tree, ...]], in particular single node: [Key, []]
function sortByPos$1(a, b) {
return a.pos - b.pos;
}
// classic binary search
function binarySearch(arr, item, comparator) {
var low = 0;
var high = arr.length;
var mid;
while (low < high) {
mid = (low + high) >>> 1;
if (comparator(arr[mid], item) < 0) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
// assuming the arr is sorted, insert the item in the proper place
function insertSorted(arr, item, comparator) {
var idx = binarySearch(arr, item, comparator);
arr.splice(idx, 0, item);
}
// Turn a path as a flat array into a tree with a single branch.
// If any should be stemmed from the beginning of the array, that's passed
// in as the second argument
function pathToTree(path, numStemmed) {
var root;
var leaf;
for (var i = numStemmed, len = path.length; i < len; i++) {
var node = path[i];
var currentLeaf = [node.id, node.opts, []];
if (leaf) {
leaf[2].push(currentLeaf);
leaf = currentLeaf;
} else {
root = leaf = currentLeaf;
}
}
return root;
}
// compare the IDs of two trees
function compareTree(a, b) {
return a[0] < b[0] ? -1 : 1;
}
// Merge two trees together
// The roots of tree1 and tree2 must be the same revision
function mergeTree(in_tree1, in_tree2) {
var queue = [{tree1: in_tree1, tree2: in_tree2}];
var conflicts = false;
while (queue.length > 0) {
var item = queue.pop();
var tree1 = item.tree1;
var tree2 = item.tree2;
if (tree1[1].status || tree2[1].status) {
tree1[1].status =
(tree1[1].status === 'available' ||
tree2[1].status === 'available') ? 'available' : 'missing';
}
for (var i = 0; i < tree2[2].length; i++) {
if (!tree1[2][0]) {
conflicts = 'new_leaf';
tree1[2][0] = tree2[2][i];
continue;
}
var merged = false;
for (var j = 0; j < tree1[2].length; j++) {
if (tree1[2][j][0] === tree2[2][i][0]) {
queue.push({tree1: tree1[2][j], tree2: tree2[2][i]});
merged = true;
}
}
if (!merged) {
conflicts = 'new_branch';
insertSorted(tree1[2], tree2[2][i], compareTree);
}
}
}
return {conflicts: conflicts, tree: in_tree1};
}
function doMerge(tree, path, dontExpand) {
var restree = [];
var conflicts = false;
var merged = false;
var res;
if (!tree.length) {
return {tree: [path], conflicts: 'new_leaf'};
}
for (var i = 0, len = tree.length; i < len; i++) {
var branch = tree[i];
if (branch.pos === path.pos && branch.ids[0] === path.ids[0]) {
// Paths start at the same position and have the same root, so they need
// merged
res = mergeTree(branch.ids, path.ids);
restree.push({pos: branch.pos, ids: res.tree});
conflicts = conflicts || res.conflicts;
merged = true;
} else if (dontExpand !== true) {
// The paths start at a different position, take the earliest path and
// traverse up until it as at the same point from root as the path we
// want to merge. If the keys match we return the longer path with the
// other merged After stemming we dont want to expand the trees
var t1 = branch.pos < path.pos ? branch : path;
var t2 = branch.pos < path.pos ? path : branch;
var diff = t2.pos - t1.pos;
var candidateParents = [];
var trees = [];
trees.push({ids: t1.ids, diff: diff, parent: null, parentIdx: null});
while (trees.length > 0) {
var item = trees.pop();
if (item.diff === 0) {
if (item.ids[0] === t2.ids[0]) {
candidateParents.push(item);
}
continue;
}
var elements = item.ids[2];
for (var j = 0, elementsLen = elements.length; j < elementsLen; j++) {
trees.push({
ids: elements[j],
diff: item.diff - 1,
parent: item.ids,
parentIdx: j
});
}
}
var el = candidateParents[0];
if (!el) {
restree.push(branch);
} else {
res = mergeTree(el.ids, t2.ids);
el.parent[2][el.parentIdx] = res.tree;
restree.push({pos: t1.pos, ids: t1.ids});
conflicts = conflicts || res.conflicts;
merged = true;
}
} else {
restree.push(branch);
}
}
// We didnt find
if (!merged) {
restree.push(path);
}
restree.sort(sortByPos$1);
return {
tree: restree,
conflicts: conflicts || 'internal_node'
};
}
// To ensure we dont grow the revision tree infinitely, we stem old revisions
function stem(tree, depth) {
// First we break out the tree into a complete list of root to leaf paths
var paths = rootToLeaf(tree);
var stemmedRevs;
var result;
for (var i = 0, len = paths.length; i < len; i++) {
// Then for each path, we cut off the start of the path based on the
// `depth` to stem to, and generate a new set of flat trees
var path = paths[i];
var stemmed = path.ids;
var node;
if (stemmed.length > depth) {
// only do the stemming work if we actually need to stem
if (!stemmedRevs) {
stemmedRevs = {}; // avoid allocating this object unnecessarily
}
var numStemmed = stemmed.length - depth;
node = {
pos: path.pos + numStemmed,
ids: pathToTree(stemmed, numStemmed)
};
for (var s = 0; s < numStemmed; s++) {
var rev = (path.pos + s) + '-' + stemmed[s].id;
stemmedRevs[rev] = true;
}
} else { // no need to actually stem
node = {
pos: path.pos,
ids: pathToTree(stemmed, 0)
};
}
// Then we remerge all those flat trees together, ensuring that we dont
// connect trees that would go beyond the depth limit
if (result) {
result = doMerge(result, node, true).tree;
} else {
result = [node];
}
}
// this is memory-heavy per Chrome profiler, avoid unless we actually stemmed
if (stemmedRevs) {
traverseRevTree(result, function (isLeaf, pos, revHash) {
// some revisions may have been removed in a branch but not in another
delete stemmedRevs[pos + '-' + revHash];
});
}
return {
tree: result,
revs: stemmedRevs ? Object.keys(stemmedRevs) : []
};
}
function merge(tree, path, depth) {
var newTree = doMerge(tree, path);
var stemmed = stem(newTree.tree, depth);
return {
tree: stemmed.tree,
stemmedRevs: stemmed.revs,
conflicts: newTree.conflicts
};
}
// return true if a rev exists in the rev tree, false otherwise
function getTrees(node) {
return node.ids;
}
// check if a specific revision of a doc has been deleted
// - metadata: the metadata object from the doc store
// - rev: (optional) the revision to check. defaults to winning revision
function isDeleted(metadata, rev) {
if (!rev) {
rev = winningRev(metadata);
}
var id = rev.substring(rev.indexOf('-') + 1);
var toVisit = metadata.rev_tree.map(getTrees);
var tree;
while ((tree = toVisit.pop())) {
if (tree[0] === id) {
return !!tree[1].deleted;
}
toVisit = toVisit.concat(tree[2]);
}
}
function isLocalId(id) {
return (/^_local/).test(id);
}
// returns the current leaf node for a given revision
function latest(rev, metadata) {
var toVisit = metadata.rev_tree.slice();
var node;
while ((node = toVisit.pop())) {
var pos = node.pos;
var tree = node.ids;
var id = tree[0];
var opts = tree[1];
var branches = tree[2];
var isLeaf = branches.length === 0;
var history = node.history ? node.history.slice() : [];
history.push({id: id, pos: pos, opts: opts});
if (isLeaf) {
for (var i = 0, len = history.length; i < len; i++) {
var historyNode = history[i];
var historyRev = historyNode.pos + '-' + historyNode.id;
if (historyRev === rev) {
// return the rev of this leaf
return pos + '-' + id;
}
}
}
for (var j = 0, l = branches.length; j < l; j++) {
toVisit.push({pos: pos + 1, ids: branches[j], history: history});
}
}
/* istanbul ignore next */
throw new Error('Unable to resolve latest revision for id ' + metadata.id + ', rev ' + rev);
}
inherits(Changes$2, events.EventEmitter);
function tryCatchInChangeListener(self, change) {
// isolate try/catches to avoid V8 deoptimizations
try {
self.emit('change', change);
} catch (e) {
guardedConsole('error', 'Error in .on("change", function):', e);
}
}
function Changes$2(db, opts, callback) {
events.EventEmitter.call(this);
var self = this;
this.db = db;
opts = opts ? clone(opts) : {};
var complete = opts.complete = once(function (err, resp) {
if (err) {
if (listenerCount(self, 'error') > 0) {
self.emit('error', err);
}
} else {
self.emit('complete', resp);
}
self.removeAllListeners();
db.removeListener('destroyed', onDestroy);
});
if (callback) {
self.on('complete', function (resp) {
callback(null, resp);
});
self.on('error', callback);
}
function onDestroy() {
self.cancel();
}
db.once('destroyed', onDestroy);
opts.onChange = function (change) {
/* istanbul ignore if */
if (self.isCancelled) {
return;
}
tryCatchInChangeListener(self, change);
};
var promise = new PouchPromise(function (fulfill, reject) {
opts.complete = function (err, res) {
if (err) {
reject(err);
} else {
fulfill(res);
}
};
});
self.once('cancel', function () {
db.removeListener('destroyed', onDestroy);
opts.complete(null, {status: 'cancelled'});
});
this.then = promise.then.bind(promise);
this['catch'] = promise['catch'].bind(promise);
this.then(function (result) {
complete(null, result);
}, complete);
if (!db.taskqueue.isReady) {
db.taskqueue.addTask(function (failed) {
if (failed) {
opts.complete(failed);
} else if (self.isCancelled) {
self.emit('cancel');
} else {
self.validateChanges(opts);
}
});
} else {
self.validateChanges(opts);
}
}
Changes$2.prototype.cancel = function () {
this.isCancelled = true;
if (this.db.taskqueue.isReady) {
this.emit('cancel');
}
};
function processChange(doc, metadata, opts) {
var changeList = [{rev: doc._rev}];
if (opts.style === 'all_docs') {
changeList = collectLeaves(metadata.rev_tree)
.map(function (x) { return {rev: x.rev}; });
}
var change = {
id: metadata.id,
changes: changeList,
doc: doc
};
if (isDeleted(metadata, doc._rev)) {
change.deleted = true;
}
if (opts.conflicts) {
change.doc._conflicts = collectConflicts(metadata);
if (!change.doc._conflicts.length) {
delete change.doc._conflicts;
}
}
return change;
}
Changes$2.prototype.validateChanges = function (opts) {
var callback = opts.complete;
var self = this;
/* istanbul ignore else */
if (PouchDB$2._changesFilterPlugin) {
PouchDB$2._changesFilterPlugin.validate(opts, function (err) {
if (err) {
return callback(err);
}
self.doChanges(opts);
});
} else {
self.doChanges(opts);
}
};
Changes$2.prototype.doChanges = function (opts) {
var self = this;
var callback = opts.complete;
opts = clone(opts);
if ('live' in opts && !('continuous' in opts)) {
opts.continuous = opts.live;
}
opts.processChange = processChange;
if (opts.since === 'latest') {
opts.since = 'now';
}
if (!opts.since) {
opts.since = 0;
}
if (opts.since === 'now') {
this.db.info().then(function (info) {
/* istanbul ignore if */
if (self.isCancelled) {
callback(null, {status: 'cancelled'});
return;
}
opts.since = info.update_seq;
self.doChanges(opts);
}, callback);
return;
}
/* istanbul ignore else */
if (PouchDB$2._changesFilterPlugin) {
PouchDB$2._changesFilterPlugin.normalize(opts);
if (PouchDB$2._changesFilterPlugin.shouldFilter(this, opts)) {
return PouchDB$2._changesFilterPlugin.filter(this, opts);
}
} else {
['doc_ids', 'filter', 'selector', 'view'].forEach(function (key) {
if (key in opts) {
guardedConsole('warn',
'The "' + key + '" option was passed in to changes/replicate, ' +
'but pouchdb-changes-filter plugin is not installed, so it ' +
'was ignored. Please install the plugin to enable filtering.'
);
}
});
}
if (!('descending' in opts)) {
opts.descending = false;
}
// 0 and 1 should return 1 document
opts.limit = opts.limit === 0 ? 1 : opts.limit;
opts.complete = callback;
var newPromise = this.db._changes(opts);
/* istanbul ignore else */
if (newPromise && typeof newPromise.cancel === 'function') {
var cancel = self.cancel;
self.cancel = getArguments(function (args) {
newPromise.cancel();
cancel.apply(this, args);
});
}
};
/*
* A generic pouch adapter
*/
function compare(left, right) {
return left < right ? -1 : left > right ? 1 : 0;
}
// Wrapper for functions that call the bulkdocs api with a single doc,
// if the first result is an error, return an error
function yankError(callback) {
return function (err, results) {
if (err || (results[0] && results[0].error)) {
callback(err || results[0]);
} else {
callback(null, results.length ? results[0] : results);
}
};
}
// clean docs given to us by the user
function cleanDocs(docs) {
for (var i = 0; i < docs.length; i++) {
var doc = docs[i];
if (doc._deleted) {
delete doc._attachments; // ignore atts for deleted docs
} else if (doc._attachments) {
// filter out extraneous keys from _attachments
var atts = Object.keys(doc._attachments);
for (var j = 0; j < atts.length; j++) {
var att = atts[j];
doc._attachments[att] = pick(doc._attachments[att],
['data', 'digest', 'content_type', 'length', 'revpos', 'stub']);
}
}
}
}
// compare two docs, first by _id then by _rev
function compareByIdThenRev(a, b) {
var idCompare = compare(a._id, b._id);
if (idCompare !== 0) {
return idCompare;
}
var aStart = a._revisions ? a._revisions.start : 0;
var bStart = b._revisions ? b._revisions.start : 0;
return compare(aStart, bStart);
}
// for every node in a revision tree computes its distance from the closest
// leaf
function computeHeight(revs) {
var height = {};
var edges = [];
traverseRevTree(revs, function (isLeaf, pos, id, prnt) {
var rev = pos + "-" + id;
if (isLeaf) {
height[rev] = 0;
}
if (prnt !== undefined) {
edges.push({from: prnt, to: rev});
}
return rev;
});
edges.reverse();
edges.forEach(function (edge) {
if (height[edge.from] === undefined) {
height[edge.from] = 1 + height[edge.to];
} else {
height[edge.from] = Math.min(height[edge.from], 1 + height[edge.to]);
}
});
return height;
}
function allDocsKeysQuery(api, opts, callback) {
var keys = ('limit' in opts) ?
opts.keys.slice(opts.skip, opts.limit + opts.skip) :
(opts.skip > 0) ? opts.keys.slice(opts.skip) : opts.keys;
if (opts.descending) {
keys.reverse();
}
if (!keys.length) {
return api._allDocs({limit: 0}, callback);
}
var finalResults = {
offset: opts.skip
};
return PouchPromise.all(keys.map(function (key) {
var subOpts = $inject_Object_assign({key: key, deleted: 'ok'}, opts);
['limit', 'skip', 'keys'].forEach(function (optKey) {
delete subOpts[optKey];
});
return new PouchPromise(function (resolve, reject) {
api._allDocs(subOpts, function (err, res) {
/* istanbul ignore if */
if (err) {
return reject(err);
}
finalResults.total_rows = res.total_rows;
resolve(res.rows[0] || {key: key, error: 'not_found'});
});
});
})).then(function (results) {
finalResults.rows = results;
return finalResults;
});
}
// all compaction is done in a queue, to avoid attaching
// too many listeners at once
function doNextCompaction(self) {
var task = self._compactionQueue[0];
var opts = task.opts;
var callback = task.callback;
self.get('_local/compaction').catch(function () {
return false;
}).then(function (doc) {
if (doc && doc.last_seq) {
opts.last_seq = doc.last_seq;
}
self._compact(opts, function (err, res) {
/* istanbul ignore if */
if (err) {
callback(err);
} else {
callback(null, res);
}
nextTick(function () {
self._compactionQueue.shift();
if (self._compactionQueue.length) {
doNextCompaction(self);
}
});
});
});
}
function attachmentNameError(name) {
if (name.charAt(0) === '_') {
return name + ' is not a valid attachment name, attachment ' +
'names cannot start with \'_\'';
}
return false;
}
inherits(AbstractPouchDB, events.EventEmitter);
function AbstractPouchDB() {
events.EventEmitter.call(this);
}
AbstractPouchDB.prototype.post =
adapterFun('post', function (doc, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof doc !== 'object' || Array.isArray(doc)) {
return callback(createError(NOT_AN_OBJECT));
}
this.bulkDocs({docs: [doc]}, opts, yankError(callback));
});
AbstractPouchDB.prototype.put = adapterFun('put', function (doc, opts, cb) {
if (typeof opts === 'function') {
cb = opts;
opts = {};
}
if (typeof doc !== 'object' || Array.isArray(doc)) {
return cb(createError(NOT_AN_OBJECT));
}
invalidIdError(doc._id);
if (isLocalId(doc._id) && typeof this._putLocal === 'function') {
if (doc._deleted) {
return this._removeLocal(doc, cb);
} else {
return this._putLocal(doc, cb);
}
}
if (typeof this._put === 'function' && opts.new_edits !== false) {
this._put(doc, opts, cb);
} else {
this.bulkDocs({docs: [doc]}, opts, yankError(cb));
}
});
AbstractPouchDB.prototype.putAttachment =
adapterFun('putAttachment', function (docId, attachmentId, rev,
blob, type) {
var api = this;
if (typeof type === 'function') {
type = blob;
blob = rev;
rev = null;
}
// Lets fix in https://github.com/pouchdb/pouchdb/issues/3267
/* istanbul ignore if */
if (typeof type === 'undefined') {
type = blob;
blob = rev;
rev = null;
}
if (!type) {
guardedConsole('warn', 'Attachment', attachmentId, 'on document', docId, 'is missing content_type');
}
function createAttachment(doc) {
var prevrevpos = '_rev' in doc ? parseInt(doc._rev, 10) : 0;
doc._attachments = doc._attachments || {};
doc._attachments[attachmentId] = {
content_type: type,
data: blob,
revpos: ++prevrevpos
};
return api.put(doc);
}
return api.get(docId).then(function (doc) {
if (doc._rev !== rev) {
throw createError(REV_CONFLICT);
}
return createAttachment(doc);
}, function (err) {
// create new doc
/* istanbul ignore else */
if (err.reason === MISSING_DOC.message) {
return createAttachment({_id: docId});
} else {
throw err;
}
});
});
AbstractPouchDB.prototype.removeAttachment =
adapterFun('removeAttachment', function (docId, attachmentId, rev,
callback) {
var self = this;
self.get(docId, function (err, obj) {
/* istanbul ignore if */
if (err) {
callback(err);
return;
}
if (obj._rev !== rev) {
callback(createError(REV_CONFLICT));
return;
}
/* istanbul ignore if */
if (!obj._attachments) {
return callback();
}
delete obj._attachments[attachmentId];
if (Object.keys(obj._attachments).length === 0) {
delete obj._attachments;
}
self.put(obj, callback);
});
});
AbstractPouchDB.prototype.remove =
adapterFun('remove', function (docOrId, optsOrRev, opts, callback) {
var doc;
if (typeof optsOrRev === 'string') {
// id, rev, opts, callback style
doc = {
_id: docOrId,
_rev: optsOrRev
};
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
} else {
// doc, opts, callback style
doc = docOrId;
if (typeof optsOrRev === 'function') {
callback = optsOrRev;
opts = {};
} else {
callback = opts;
opts = optsOrRev;
}
}
opts = opts || {};
opts.was_delete = true;
var newDoc = {_id: doc._id, _rev: (doc._rev || opts.rev)};
newDoc._deleted = true;
if (isLocalId(newDoc._id) && typeof this._removeLocal === 'function') {
return this._removeLocal(doc, callback);
}
this.bulkDocs({docs: [newDoc]}, opts, yankError(callback));
});
AbstractPouchDB.prototype.revsDiff =
adapterFun('revsDiff', function (req, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
var ids = Object.keys(req);
if (!ids.length) {
return callback(null, {});
}
var count = 0;
var missing = new ExportedMap();
function addToMissing(id, revId) {
if (!missing.has(id)) {
missing.set(id, {missing: []});
}
missing.get(id).missing.push(revId);
}
function processDoc(id, rev_tree) {
// Is this fast enough? Maybe we should switch to a set simulated by a map
var missingForId = req[id].slice(0);
traverseRevTree(rev_tree, function (isLeaf, pos, revHash, ctx,
opts) {
var rev = pos + '-' + revHash;
var idx = missingForId.indexOf(rev);
if (idx === -1) {
return;
}
missingForId.splice(idx, 1);
/* istanbul ignore if */
if (opts.status !== 'available') {
addToMissing(id, rev);
}
});
// Traversing the tree is synchronous, so now `missingForId` contains
// revisions that were not found in the tree
missingForId.forEach(function (rev) {
addToMissing(id, rev);
});
}
ids.map(function (id) {
this._getRevisionTree(id, function (err, rev_tree) {
if (err && err.status === 404 && err.message === 'missing') {
missing.set(id, {missing: req[id]});
} else if (err) {
/* istanbul ignore next */
return callback(err);
} else {
processDoc(id, rev_tree);
}
if (++count === ids.length) {
// convert LazyMap to object
var missingObj = {};
missing.forEach(function (value, key) {
missingObj[key] = value;
});
return callback(null, missingObj);
}
});
}, this);
});
// _bulk_get API for faster replication, as described in
// https://github.com/apache/couchdb-chttpd/pull/33
// At the "abstract" level, it will just run multiple get()s in
// parallel, because this isn't much of a performance cost
// for local databases (except the cost of multiple transactions, which is
// small). The http adapter overrides this in order
// to do a more efficient single HTTP request.
AbstractPouchDB.prototype.bulkGet =
adapterFun('bulkGet', function (opts, callback) {
bulkGet(this, opts, callback);
});
// compact one document and fire callback
// by compacting we mean removing all revisions which
// are further from the leaf in revision tree than max_height
AbstractPouchDB.prototype.compactDocument =
adapterFun('compactDocument', function (docId, maxHeight, callback) {
var self = this;
this._getRevisionTree(docId, function (err, revTree) {
/* istanbul ignore if */
if (err) {
return callback(err);
}
var height = computeHeight(revTree);
var candidates = [];
var revs = [];
Object.keys(height).forEach(function (rev) {
if (height[rev] > maxHeight) {
candidates.push(rev);
}
});
traverseRevTree(revTree, function (isLeaf, pos, revHash, ctx, opts) {
var rev = pos + '-' + revHash;
if (opts.status === 'available' && candidates.indexOf(rev) !== -1) {
revs.push(rev);
}
});
self._doCompaction(docId, revs, callback);
});
});
// compact the whole database using single document
// compaction
AbstractPouchDB.prototype.compact =
adapterFun('compact', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
var self = this;
opts = opts || {};
self._compactionQueue = self._compactionQueue || [];
self._compactionQueue.push({opts: opts, callback: callback});
if (self._compactionQueue.length === 1) {
doNextCompaction(self);
}
});
AbstractPouchDB.prototype._compact = function (opts, callback) {
var self = this;
var changesOpts = {
return_docs: false,
last_seq: opts.last_seq || 0
};
var promises = [];
function onChange(row) {
promises.push(self.compactDocument(row.id, 0));
}
function onComplete(resp) {
var lastSeq = resp.last_seq;
PouchPromise.all(promises).then(function () {
return upsert(self, '_local/compaction', function deltaFunc(doc) {
if (!doc.last_seq || doc.last_seq < lastSeq) {
doc.last_seq = lastSeq;
return doc;
}
return false; // somebody else got here first, don't update
});
}).then(function () {
callback(null, {ok: true});
}).catch(callback);
}
self.changes(changesOpts)
.on('change', onChange)
.on('complete', onComplete)
.on('error', callback);
};
/* Begin api wrappers. Specific functionality to storage belongs in the
_[method] */
AbstractPouchDB.prototype.get = adapterFun('get', function (id, opts, cb) {
if (typeof opts === 'function') {
cb = opts;
opts = {};
}
if (typeof id !== 'string') {
return cb(createError(INVALID_ID));
}
if (isLocalId(id) && typeof this._getLocal === 'function') {
return this._getLocal(id, cb);
}
var leaves = [], self = this;
function finishOpenRevs() {
var result = [];
var count = leaves.length;
/* istanbul ignore if */
if (!count) {
return cb(null, result);
}
// order with open_revs is unspecified
leaves.forEach(function (leaf) {
self.get(id, {
rev: leaf,
revs: opts.revs,
latest: opts.latest,
attachments: opts.attachments
}, function (err, doc) {
if (!err) {
// using latest=true can produce duplicates
var existing;
for (var i = 0, l = result.length; i < l; i++) {
if (result[i].ok && result[i].ok._rev === doc._rev) {
existing = true;
break;
}
}
if (!existing) {
result.push({ok: doc});
}
} else {
result.push({missing: leaf});
}
count--;
if (!count) {
cb(null, result);
}
});
});
}
if (opts.open_revs) {
if (opts.open_revs === "all") {
this._getRevisionTree(id, function (err, rev_tree) {
if (err) {
return cb(err);
}
leaves = collectLeaves(rev_tree).map(function (leaf) {
return leaf.rev;
});
finishOpenRevs();
});
} else {
if (Array.isArray(opts.open_revs)) {
leaves = opts.open_revs;
for (var i = 0; i < leaves.length; i++) {
var l = leaves[i];
// looks like it's the only thing couchdb checks
if (!(typeof (l) === "string" && /^\d+-/.test(l))) {
return cb(createError(INVALID_REV));
}
}
finishOpenRevs();
} else {
return cb(createError(UNKNOWN_ERROR, 'function_clause'));
}
}
return; // open_revs does not like other options
}
return this._get(id, opts, function (err, result) {
if (err) {
return cb(err);
}
var doc = result.doc;
var metadata = result.metadata;
var ctx = result.ctx;
if (opts.conflicts) {
var conflicts = collectConflicts(metadata);
if (conflicts.length) {
doc._conflicts = conflicts;
}
}
if (isDeleted(metadata, doc._rev)) {
doc._deleted = true;
}
if (opts.revs || opts.revs_info) {
var splittedRev = doc._rev.split('-');
var revNo = parseInt(splittedRev[0], 10);
var revHash = splittedRev[1];
var paths = rootToLeaf(metadata.rev_tree);
var path = null;
for (var i = 0; i < paths.length; i++) {
var currentPath = paths[i];
var hashIndex = currentPath.ids.map(function (x) { return x.id; })
.indexOf(revHash);
var hashFoundAtRevPos = hashIndex === (revNo - 1);
if (hashFoundAtRevPos || (!path && hashIndex !== -1)) {
path = currentPath;
}
}
var indexOfRev = path.ids.map(function (x) { return x.id; })
.indexOf(doc._rev.split('-')[1]) + 1;
var howMany = path.ids.length - indexOfRev;
path.ids.splice(indexOfRev, howMany);
path.ids.reverse();
if (opts.revs) {
doc._revisions = {
start: (path.pos + path.ids.length) - 1,
ids: path.ids.map(function (rev) {
return rev.id;
})
};
}
if (opts.revs_info) {
var pos = path.pos + path.ids.length;
doc._revs_info = path.ids.map(function (rev) {
pos--;
return {
rev: pos + '-' + rev.id,
status: rev.opts.status
};
});
}
}
if (opts.attachments && doc._attachments) {
var attachments = doc._attachments;
var count = Object.keys(attachments).length;
if (count === 0) {
return cb(null, doc);
}
Object.keys(attachments).forEach(function (key) {
this._getAttachment(doc._id, key, attachments[key], {
// Previously the revision handling was done in adapter.js
// getAttachment, however since idb-next doesnt we need to
// pass the rev through
rev: doc._rev,
binary: opts.binary,
ctx: ctx
}, function (err, data) {
var att = doc._attachments[key];
att.data = data;
delete att.stub;
delete att.length;
if (!--count) {
cb(null, doc);
}
});
}, self);
} else {
if (doc._attachments) {
for (var key in doc._attachments) {
/* istanbul ignore else */
if (doc._attachments.hasOwnProperty(key)) {
doc._attachments[key].stub = true;
}
}
}
cb(null, doc);
}
});
});
// TODO: I dont like this, it forces an extra read for every
// attachment read and enforces a confusing api between
// adapter.js and the adapter implementation
AbstractPouchDB.prototype.getAttachment =
adapterFun('getAttachment', function (docId, attachmentId, opts, callback) {
var self = this;
if (opts instanceof Function) {
callback = opts;
opts = {};
}
this._get(docId, opts, function (err, res) {
if (err) {
return callback(err);
}
if (res.doc._attachments && res.doc._attachments[attachmentId]) {
opts.ctx = res.ctx;
opts.binary = true;
self._getAttachment(docId, attachmentId,
res.doc._attachments[attachmentId], opts, callback);
} else {
return callback(createError(MISSING_DOC));
}
});
});
AbstractPouchDB.prototype.allDocs =
adapterFun('allDocs', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts.skip = typeof opts.skip !== 'undefined' ? opts.skip : 0;
if (opts.start_key) {
opts.startkey = opts.start_key;
}
if (opts.end_key) {
opts.endkey = opts.end_key;
}
if ('keys' in opts) {
if (!Array.isArray(opts.keys)) {
return callback(new TypeError('options.keys must be an array'));
}
var incompatibleOpt =
['startkey', 'endkey', 'key'].filter(function (incompatibleOpt) {
return incompatibleOpt in opts;
})[0];
if (incompatibleOpt) {
callback(createError(QUERY_PARSE_ERROR,
'Query parameter `' + incompatibleOpt +
'` is not compatible with multi-get'
));
return;
}
if (!isRemote(this)) {
return allDocsKeysQuery(this, opts, callback);
}
}
return this._allDocs(opts, callback);
});
AbstractPouchDB.prototype.changes = function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
return new Changes$2(this, opts, callback);
};
AbstractPouchDB.prototype.close = adapterFun('close', function (callback) {
this._closed = true;
this.emit('closed');
return this._close(callback);
});
AbstractPouchDB.prototype.info = adapterFun('info', function (callback) {
var self = this;
this._info(function (err, info) {
if (err) {
return callback(err);
}
// assume we know better than the adapter, unless it informs us
info.db_name = info.db_name || self.name;
info.auto_compaction = !!(self.auto_compaction && !isRemote(self));
info.adapter = self.adapter;
callback(null, info);
});
});
AbstractPouchDB.prototype.id = adapterFun('id', function (callback) {
return this._id(callback);
});
/* istanbul ignore next */
AbstractPouchDB.prototype.type = function () {
return (typeof this._type === 'function') ? this._type() : this.adapter;
};
AbstractPouchDB.prototype.bulkDocs =
adapterFun('bulkDocs', function (req, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = opts || {};
if (Array.isArray(req)) {
req = {
docs: req
};
}
if (!req || !req.docs || !Array.isArray(req.docs)) {
return callback(createError(MISSING_BULK_DOCS));
}
for (var i = 0; i < req.docs.length; ++i) {
if (typeof req.docs[i] !== 'object' || Array.isArray(req.docs[i])) {
return callback(createError(NOT_AN_OBJECT));
}
}
var attachmentError;
req.docs.forEach(function (doc) {
if (doc._attachments) {
Object.keys(doc._attachments).forEach(function (name) {
attachmentError = attachmentError || attachmentNameError(name);
if (!doc._attachments[name].content_type) {
guardedConsole('warn', 'Attachment', name, 'on document', doc._id, 'is missing content_type');
}
});
}
});
if (attachmentError) {
return callback(createError(BAD_REQUEST, attachmentError));
}
if (!('new_edits' in opts)) {
if ('new_edits' in req) {
opts.new_edits = req.new_edits;
} else {
opts.new_edits = true;
}
}
var adapter = this;
if (!opts.new_edits && !isRemote(adapter)) {
// ensure revisions of the same doc are sorted, so that
// the local adapter processes them correctly (#2935)
req.docs.sort(compareByIdThenRev);
}
cleanDocs(req.docs);
// in the case of conflicts, we want to return the _ids to the user
// however, the underlying adapter may destroy the docs array, so
// create a copy here
var ids = req.docs.map(function (doc) {
return doc._id;
});
return this._bulkDocs(req, opts, function (err, res) {
if (err) {
return callback(err);
}
if (!opts.new_edits) {
// this is what couch does when new_edits is false
res = res.filter(function (x) {
return x.error;
});
}
// add ids for error/conflict responses (not required for CouchDB)
if (!isRemote(adapter)) {
for (var i = 0, l = res.length; i < l; i++) {
res[i].id = res[i].id || ids[i];
}
}
callback(null, res);
});
});
AbstractPouchDB.prototype.registerDependentDatabase =
adapterFun('registerDependentDatabase', function (dependentDb,
callback) {
var depDB = new this.constructor(dependentDb, this.__opts);
function diffFun(doc) {
doc.dependentDbs = doc.dependentDbs || {};
if (doc.dependentDbs[dependentDb]) {
return false; // no update required
}
doc.dependentDbs[dependentDb] = true;
return doc;
}
upsert(this, '_local/_pouch_dependentDbs', diffFun)
.then(function () {
callback(null, {db: depDB});
}).catch(callback);
});
AbstractPouchDB.prototype.destroy =
adapterFun('destroy', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
var self = this;
var usePrefix = 'use_prefix' in self ? self.use_prefix : true;
function destroyDb() {
// call destroy method of the particular adaptor
self._destroy(opts, function (err, resp) {
if (err) {
return callback(err);
}
self._destroyed = true;
self.emit('destroyed');
callback(null, resp || { 'ok': true });
});
}
if (isRemote(self)) {
// no need to check for dependent DBs if it's a remote DB
return destroyDb();
}
self.get('_local/_pouch_dependentDbs', function (err, localDoc) {
if (err) {
/* istanbul ignore if */
if (err.status !== 404) {
return callback(err);
} else { // no dependencies
return destroyDb();
}
}
var dependentDbs = localDoc.dependentDbs;
var PouchDB = self.constructor;
var deletedMap = Object.keys(dependentDbs).map(function (name) {
// use_prefix is only false in the browser
/* istanbul ignore next */
var trueName = usePrefix ?
name.replace(new RegExp('^' + PouchDB.prefix), '') : name;
return new PouchDB(trueName, self.__opts).destroy();
});
PouchPromise.all(deletedMap).then(destroyDb, callback);
});
});
function TaskQueue$1() {
this.isReady = false;
this.failed = false;
this.queue = [];
}
TaskQueue$1.prototype.execute = function () {
var fun;
if (this.failed) {
while ((fun = this.queue.shift())) {
fun(this.failed);
}
} else {
while ((fun = this.queue.shift())) {
fun();
}
}
};
TaskQueue$1.prototype.fail = function (err) {
this.failed = err;
this.execute();
};
TaskQueue$1.prototype.ready = function (db) {
this.isReady = true;
this.db = db;
this.execute();
};
TaskQueue$1.prototype.addTask = function (fun) {
this.queue.push(fun);
if (this.failed) {
this.execute();
}
};
function parseAdapter(name, opts) {
var match = name.match(/([a-z\-]*):\/\/(.*)/);
if (match) {
// the http adapter expects the fully qualified name
return {
name: /https?/.test(match[1]) ? match[1] + '://' + match[2] : match[2],
adapter: match[1]
};
}
var adapters = PouchDB$2.adapters;
var preferredAdapters = PouchDB$2.preferredAdapters;
var prefix = PouchDB$2.prefix;
var adapterName = opts.adapter;
if (!adapterName) { // automatically determine adapter
for (var i = 0; i < preferredAdapters.length; ++i) {
adapterName = preferredAdapters[i];
// check for browsers that have been upgraded from websql-only to websql+idb
/* istanbul ignore if */
if (adapterName === 'idb' && 'websql' in adapters &&
hasLocalStorage() && localStorage['_pouch__websqldb_' + prefix + name]) {
// log it, because this can be confusing during development
guardedConsole('log', 'PouchDB is downgrading "' + name + '" to WebSQL to' +
' avoid data loss, because it was already opened with WebSQL.');
continue; // keep using websql to avoid user data loss
}
break;
}
}
var adapter = adapters[adapterName];
// if adapter is invalid, then an error will be thrown later
var usePrefix = (adapter && 'use_prefix' in adapter) ?
adapter.use_prefix : true;
return {
name: usePrefix ? (prefix + name) : name,
adapter: adapterName
};
}
// OK, so here's the deal. Consider this code:
// var db1 = new PouchDB('foo');
// var db2 = new PouchDB('foo');
// db1.destroy();
// ^ these two both need to emit 'destroyed' events,
// as well as the PouchDB constructor itself.
// So we have one db object (whichever one got destroy() called on it)
// responsible for emitting the initial event, which then gets emitted
// by the constructor, which then broadcasts it to any other dbs
// that may have been created with the same name.
function prepareForDestruction(self) {
var destructionListeners = self.constructor._destructionListeners;
function onDestroyed() {
self.removeListener('closed', onClosed);
self.constructor.emit('destroyed', self.name);
}
function onConstructorDestroyed() {
self.removeListener('destroyed', onDestroyed);
self.removeListener('closed', onClosed);
self.emit('destroyed');
}
function onClosed() {
self.removeListener('destroyed', onDestroyed);
destructionListeners.delete(self.name);
}
self.once('destroyed', onDestroyed);
self.once('closed', onClosed);
// in setup.js, the constructor is primed to listen for destroy events
if (!destructionListeners.has(self.name)) {
destructionListeners.set(self.name, []);
}
destructionListeners.get(self.name).push(onConstructorDestroyed);
}
inherits(PouchDB$2, AbstractPouchDB);
function PouchDB$2(name, opts) {
// In Node our test suite only tests this for PouchAlt unfortunately
/* istanbul ignore if */
if (!(this instanceof PouchDB$2)) {
return new PouchDB$2(name, opts);
}
var self = this;
opts = opts || {};
if (name && typeof name === 'object') {
opts = name;
name = opts.name;
delete opts.name;
}
this.__opts = opts = clone(opts);
self.auto_compaction = opts.auto_compaction;
self.prefix = PouchDB$2.prefix;
if (typeof name !== 'string') {
throw new Error('Missing/invalid DB name');
}
var prefixedName = (opts.prefix || '') + name;
var backend = parseAdapter(prefixedName, opts);
opts.name = backend.name;
opts.adapter = opts.adapter || backend.adapter;
self.name = name;
self._adapter = opts.adapter;
PouchDB$2.emit('debug', ['adapter', 'Picked adapter: ', opts.adapter]);
if (!PouchDB$2.adapters[opts.adapter] ||
!PouchDB$2.adapters[opts.adapter].valid()) {
throw new Error('Invalid Adapter: ' + opts.adapter);
}
AbstractPouchDB.call(self);
self.taskqueue = new TaskQueue$1();
self.adapter = opts.adapter;
PouchDB$2.adapters[opts.adapter].call(self, opts, function (err) {
if (err) {
return self.taskqueue.fail(err);
}
prepareForDestruction(self);
self.emit('created', self);
PouchDB$2.emit('created', self.name);
self.taskqueue.ready(self);
});
}
PouchDB$2.adapters = {};
PouchDB$2.preferredAdapters = [];
PouchDB$2.prefix = '_pouch_';
var eventEmitter = new events.EventEmitter();
function setUpEventEmitter(Pouch) {
Object.keys(events.EventEmitter.prototype).forEach(function (key) {
if (typeof events.EventEmitter.prototype[key] === 'function') {
Pouch[key] = eventEmitter[key].bind(eventEmitter);
}
});
// these are created in constructor.js, and allow us to notify each DB with
// the same name that it was destroyed, via the constructor object
var destructListeners = Pouch._destructionListeners = new ExportedMap();
Pouch.on('destroyed', function onConstructorDestroyed(name) {
destructListeners.get(name).forEach(function (callback) {
callback();
});
destructListeners.delete(name);
});
}
setUpEventEmitter(PouchDB$2);
PouchDB$2.adapter = function (id, obj, addToPreferredAdapters) {
/* istanbul ignore else */
Eif (obj.valid()) {
PouchDB$2.adapters[id] = obj;
if (addToPreferredAdapters) {
PouchDB$2.preferredAdapters.push(id);
}
}
};
PouchDB$2.plugin = function (obj) {
Eif (typeof obj === 'function') { // function style for plugins
obj(PouchDB$2);
} else if (typeof obj !== 'object' || Object.keys(obj).length === 0) {
throw new Error('Invalid plugin: got \"' + obj + '\", expected an object or a function');
} else {
Object.keys(obj).forEach(function (id) { // object style for plugins
PouchDB$2.prototype[id] = obj[id];
});
}
Iif (this.__defaults) {
PouchDB$2.__defaults = $inject_Object_assign({}, this.__defaults);
}
return PouchDB$2;
};
PouchDB$2.defaults = function (defaultOpts) {
function PouchAlt(name, opts) {
if (!(this instanceof PouchAlt)) {
return new PouchAlt(name, opts);
}
opts = opts || {};
if (name && typeof name === 'object') {
opts = name;
name = opts.name;
delete opts.name;
}
opts = $inject_Object_assign({}, PouchAlt.__defaults, opts);
PouchDB$2.call(this, name, opts);
}
inherits(PouchAlt, PouchDB$2);
PouchAlt.preferredAdapters = PouchDB$2.preferredAdapters.slice();
Object.keys(PouchDB$2).forEach(function (key) {
if (!(key in PouchAlt)) {
PouchAlt[key] = PouchDB$2[key];
}
});
// make default options transitive
// https://github.com/pouchdb/pouchdb/issues/5922
PouchAlt.__defaults = $inject_Object_assign({}, this.__defaults, defaultOpts);
return PouchAlt;
};
// managed automatically by set-version.js
var version = "6.2.0";
function debugPouch(PouchDB) {
PouchDB.debug = debug;
var logs = {};
/* istanbul ignore next */
PouchDB.on('debug', function (args) {
// first argument is log identifier
var logId = args[0];
// rest should be passed verbatim to debug module
var logArgs = args.slice(1);
if (!logs[logId]) {
logs[logId] = debug('pouchdb:' + logId);
}
logs[logId].apply(null, logArgs);
});
}
// this would just be "return doc[field]", but fields
// can be "deep" due to dot notation
function getFieldFromDoc(doc, parsedField) {
var value = doc;
for (var i = 0, len = parsedField.length; i < len; i++) {
var key = parsedField[i];
value = value[key];
if (!value) {
break;
}
}
return value;
}
function compare$1(left, right) {
return left < right ? -1 : left > right ? 1 : 0;
}
// Converts a string in dot notation to an array of its components, with backslash escaping
function parseField(fieldName) {
// fields may be deep (e.g. "foo.bar.baz"), so parse
var fields = [];
var current = '';
for (var i = 0, len = fieldName.length; i < len; i++) {
var ch = fieldName[i];
if (ch === '.') {
if (i > 0 && fieldName[i - 1] === '\\') { // escaped delimiter
current = current.substring(0, current.length - 1) + '.';
} else { // not escaped, so delimiter
fields.push(current);
current = '';
}
} else { // normal character
current += ch;
}
}
fields.push(current);
return fields;
}
var combinationFields = ['$or', '$nor', '$not'];
function isCombinationalField(field) {
return combinationFields.indexOf(field) > -1;
}
function getKey(obj) {
return Object.keys(obj)[0];
}
function getValue$1(obj) {
return obj[getKey(obj)];
}
// flatten an array of selectors joined by an $and operator
function mergeAndedSelectors(selectors) {
// sort to ensure that e.g. if the user specified
// $and: [{$gt: 'a'}, {$gt: 'b'}], then it's collapsed into
// just {$gt: 'b'}
var res = {};
selectors.forEach(function (selector) {
Object.keys(selector).forEach(function (field) {
var matcher = selector[field];
if (typeof matcher !== 'object') {
matcher = {$eq: matcher};
}
if (isCombinationalField(field)) {
if (matcher instanceof Array) {
res[field] = matcher.map(function (m) {
return mergeAndedSelectors([m]);
});
} else {
res[field] = mergeAndedSelectors([matcher]);
}
} else {
var fieldMatchers = res[field] = res[field] || {};
Object.keys(matcher).forEach(function (operator) {
var value = matcher[operator];
if (operator === '$gt' || operator === '$gte') {
return mergeGtGte(operator, value, fieldMatchers);
} else if (operator === '$lt' || operator === '$lte') {
return mergeLtLte(operator, value, fieldMatchers);
} else if (operator === '$ne') {
return mergeNe(value, fieldMatchers);
} else if (operator === '$eq') {
return mergeEq(value, fieldMatchers);
}
fieldMatchers[operator] = value;
});
}
});
});
return res;
}
// collapse logically equivalent gt/gte values
function mergeGtGte(operator, value, fieldMatchers) {
if (typeof fieldMatchers.$eq !== 'undefined') {
return; // do nothing
}
if (typeof fieldMatchers.$gte !== 'undefined') {
if (operator === '$gte') {
if (value > fieldMatchers.$gte) { // more specificity
fieldMatchers.$gte = value;
}
} else { // operator === '$gt'
if (value >= fieldMatchers.$gte) { // more specificity
delete fieldMatchers.$gte;
fieldMatchers.$gt = value;
}
}
} else if (typeof fieldMatchers.$gt !== 'undefined') {
if (operator === '$gte') {
if (value > fieldMatchers.$gt) { // more specificity
delete fieldMatchers.$gt;
fieldMatchers.$gte = value;
}
} else { // operator === '$gt'
if (value > fieldMatchers.$gt) { // more specificity
fieldMatchers.$gt = value;
}
}
} else {
fieldMatchers[operator] = value;
}
}
// collapse logically equivalent lt/lte values
function mergeLtLte(operator, value, fieldMatchers) {
if (typeof fieldMatchers.$eq !== 'undefined') {
return; // do nothing
}
if (typeof fieldMatchers.$lte !== 'undefined') {
if (operator === '$lte') {
if (value < fieldMatchers.$lte) { // more specificity
fieldMatchers.$lte = value;
}
} else { // operator === '$gt'
if (value <= fieldMatchers.$lte) { // more specificity
delete fieldMatchers.$lte;
fieldMatchers.$lt = value;
}
}
} else if (typeof fieldMatchers.$lt !== 'undefined') {
if (operator === '$lte') {
if (value < fieldMatchers.$lt) { // more specificity
delete fieldMatchers.$lt;
fieldMatchers.$lte = value;
}
} else { // operator === '$gt'
if (value < fieldMatchers.$lt) { // more specificity
fieldMatchers.$lt = value;
}
}
} else {
fieldMatchers[operator] = value;
}
}
// combine $ne values into one array
function mergeNe(value, fieldMatchers) {
if ('$ne' in fieldMatchers) {
// there are many things this could "not" be
fieldMatchers.$ne.push(value);
} else { // doesn't exist yet
fieldMatchers.$ne = [value];
}
}
// add $eq into the mix
function mergeEq(value, fieldMatchers) {
// these all have less specificity than the $eq
// TODO: check for user errors here
delete fieldMatchers.$gt;
delete fieldMatchers.$gte;
delete fieldMatchers.$lt;
delete fieldMatchers.$lte;
delete fieldMatchers.$ne;
fieldMatchers.$eq = value;
}
//
// normalize the selector
//
function massageSelector(input) {
var result = clone(input);
var wasAnded = false;
if ('$and' in result) {
result = mergeAndedSelectors(result['$and']);
wasAnded = true;
}
['$or', '$nor'].forEach(function (orOrNor) {
if (orOrNor in result) {
// message each individual selector
// e.g. {foo: 'bar'} becomes {foo: {$eq: 'bar'}}
result[orOrNor].forEach(function (subSelector) {
var fields = Object.keys(subSelector);
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
var matcher = subSelector[field];
if (typeof matcher !== 'object' || matcher === null) {
subSelector[field] = {$eq: matcher};
}
}
});
}
});
if ('$not' in result) {
//This feels a little like forcing, but it will work for now,
//I would like to come back to this and make the merging of selectors a little more generic
result['$not'] = mergeAndedSelectors([result['$not']]);
}
var fields = Object.keys(result);
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
var matcher = result[field];
if (typeof matcher !== 'object' || matcher === null) {
matcher = {$eq: matcher};
} else if ('$ne' in matcher && !wasAnded) {
// I put these in an array, since there may be more than one
// but in the "mergeAnded" operation, I already take care of that
matcher.$ne = [matcher.$ne];
}
result[field] = matcher;
}
return result;
}
function pad(str, padWith, upToLength) {
var padding = '';
var targetLength = upToLength - str.length;
/* istanbul ignore next */
while (padding.length < targetLength) {
padding += padWith;
}
return padding;
}
function padLeft(str, padWith, upToLength) {
var padding = pad(str, padWith, upToLength);
return padding + str;
}
var MIN_MAGNITUDE = -324; // verified by -Number.MIN_VALUE
var MAGNITUDE_DIGITS = 3; // ditto
var SEP = ''; // set to '_' for easier debugging
function collate(a, b) {
if (a === b) {
return 0;
}
a = normalizeKey(a);
b = normalizeKey(b);
var ai = collationIndex(a);
var bi = collationIndex(b);
if ((ai - bi) !== 0) {
return ai - bi;
}
switch (typeof a) {
case 'number':
return a - b;
case 'boolean':
return a < b ? -1 : 1;
case 'string':
return stringCollate(a, b);
}
return Array.isArray(a) ? arrayCollate(a, b) : objectCollate(a, b);
}
// couch considers null/NaN/Infinity/-Infinity === undefined,
// for the purposes of mapreduce indexes. also, dates get stringified.
function normalizeKey(key) {
switch (typeof key) {
case 'undefined':
return null;
case 'number':
if (key === Infinity || key === -Infinity || isNaN(key)) {
return null;
}
return key;
case 'object':
var origKey = key;
if (Array.isArray(key)) {
var len = key.length;
key = new Array(len);
for (var i = 0; i < len; i++) {
key[i] = normalizeKey(origKey[i]);
}
/* istanbul ignore next */
} else if (key instanceof Date) {
return key.toJSON();
} else if (key !== null) { // generic object
key = {};
for (var k in origKey) {
if (origKey.hasOwnProperty(k)) {
var val = origKey[k];
if (typeof val !== 'undefined') {
key[k] = normalizeKey(val);
}
}
}
}
}
return key;
}
function indexify(key) {
if (key !== null) {
switch (typeof key) {
case 'boolean':
return key ? 1 : 0;
case 'number':
return numToIndexableString(key);
case 'string':
// We've to be sure that key does not contain \u0000
// Do order-preserving replacements:
// 0 -> 1, 1
// 1 -> 1, 2
// 2 -> 2, 2
return key
.replace(/\u0002/g, '\u0002\u0002')
.replace(/\u0001/g, '\u0001\u0002')
.replace(/\u0000/g, '\u0001\u0001');
case 'object':
var isArray = Array.isArray(key);
var arr = isArray ? key : Object.keys(key);
var i = -1;
var len = arr.length;
var result = '';
if (isArray) {
while (++i < len) {
result += toIndexableString(arr[i]);
}
} else {
while (++i < len) {
var objKey = arr[i];
result += toIndexableString(objKey) +
toIndexableString(key[objKey]);
}
}
return result;
}
}
return '';
}
// convert the given key to a string that would be appropriate
// for lexical sorting, e.g. within a database, where the
// sorting is the same given by the collate() function.
function toIndexableString(key) {
var zero = '\u0000';
key = normalizeKey(key);
return collationIndex(key) + SEP + indexify(key) + zero;
}
function arrayCollate(a, b) {
var len = Math.min(a.length, b.length);
for (var i = 0; i < len; i++) {
var sort = collate(a[i], b[i]);
if (sort !== 0) {
return sort;
}
}
return (a.length === b.length) ? 0 :
(a.length > b.length) ? 1 : -1;
}
function stringCollate(a, b) {
// See: https://github.com/daleharvey/pouchdb/issues/40
// This is incompatible with the CouchDB implementation, but its the
// best we can do for now
return (a === b) ? 0 : ((a > b) ? 1 : -1);
}
function objectCollate(a, b) {
var ak = Object.keys(a), bk = Object.keys(b);
var len = Math.min(ak.length, bk.length);
for (var i = 0; i < len; i++) {
// First sort the keys
var sort = collate(ak[i], bk[i]);
if (sort !== 0) {
return sort;
}
// if the keys are equal sort the values
sort = collate(a[ak[i]], b[bk[i]]);
if (sort !== 0) {
return sort;
}
}
return (ak.length === bk.length) ? 0 :
(ak.length > bk.length) ? 1 : -1;
}
// The collation is defined by erlangs ordered terms
// the atoms null, true, false come first, then numbers, strings,
// arrays, then objects
// null/undefined/NaN/Infinity/-Infinity are all considered null
function collationIndex(x) {
var id = ['boolean', 'number', 'string', 'object'];
var idx = id.indexOf(typeof x);
//false if -1 otherwise true, but fast!!!!1
if (~idx) {
if (x === null) {
return 1;
}
if (Array.isArray(x)) {
return 5;
}
return idx < 3 ? (idx + 2) : (idx + 3);
}
/* istanbul ignore next */
if (Array.isArray(x)) {
return 5;
}
}
// conversion:
// x yyy zz...zz
// x = 0 for negative, 1 for 0, 2 for positive
// y = exponent (for negative numbers negated) moved so that it's >= 0
// z = mantisse
function numToIndexableString(num) {
if (num === 0) {
return '1';
}
// convert number to exponential format for easier and
// more succinct string sorting
var expFormat = num.toExponential().split(/e\+?/);
var magnitude = parseInt(expFormat[1], 10);
var neg = num < 0;
var result = neg ? '0' : '2';
// first sort by magnitude
// it's easier if all magnitudes are positive
var magForComparison = ((neg ? -magnitude : magnitude) - MIN_MAGNITUDE);
var magString = padLeft((magForComparison).toString(), '0', MAGNITUDE_DIGITS);
result += SEP + magString;
// then sort by the factor
var factor = Math.abs(parseFloat(expFormat[0])); // [1..10)
/* istanbul ignore next */
if (neg) { // for negative reverse ordering
factor = 10 - factor;
}
var factorStr = factor.toFixed(20);
// strip zeros from the end
factorStr = factorStr.replace(/\.?0+$/, '');
result += SEP + factorStr;
return result;
}
// create a comparator based on the sort object
function createFieldSorter(sort) {
function getFieldValuesAsArray(doc) {
return sort.map(function (sorting) {
var fieldName = getKey(sorting);
var parsedField = parseField(fieldName);
var docFieldValue = getFieldFromDoc(doc, parsedField);
return docFieldValue;
});
}
return function (aRow, bRow) {
var aFieldValues = getFieldValuesAsArray(aRow.doc);
var bFieldValues = getFieldValuesAsArray(bRow.doc);
var collation = collate(aFieldValues, bFieldValues);
if (collation !== 0) {
return collation;
}
// this is what mango seems to do
return compare$1(aRow.doc._id, bRow.doc._id);
};
}
function filterInMemoryFields(rows, requestDef, inMemoryFields) {
rows = rows.filter(function (row) {
return rowFilter(row.doc, requestDef.selector, inMemoryFields);
});
if (requestDef.sort) {
// in-memory sort
var fieldSorter = createFieldSorter(requestDef.sort);
rows = rows.sort(fieldSorter);
if (typeof requestDef.sort[0] !== 'string' &&
getValue$1(requestDef.sort[0]) === 'desc') {
rows = rows.reverse();
}
}
if ('limit' in requestDef || 'skip' in requestDef) {
// have to do the limit in-memory
var skip = requestDef.skip || 0;
var limit = ('limit' in requestDef ? requestDef.limit : rows.length) + skip;
rows = rows.slice(skip, limit);
}
return rows;
}
function rowFilter(doc, selector, inMemoryFields) {
return inMemoryFields.every(function (field) {
if (isDesignDoc(doc)) {
return false;
}
var matcher = selector[field];
var parsedField = parseField(field);
var docFieldValue = getFieldFromDoc(doc, parsedField);
if (isCombinationalField(field)) {
return matchCominationalSelector(field, matcher, doc);
}
return matchSelector(matcher, doc, parsedField, docFieldValue);
});
}
function isDesignDoc(doc) {
return /^_design\//.test(doc._id);
}
function matchSelector(matcher, doc, parsedField, docFieldValue) {
if (!matcher) {
// no filtering necessary; this field is just needed for sorting
return true;
}
return Object.keys(matcher).every(function (userOperator) {
var userValue = matcher[userOperator];
return match(userOperator, doc, userValue, parsedField, docFieldValue);
});
}
function matchCominationalSelector(field, matcher, doc) {
if (field === '$or') {
return matcher.some(function (orMatchers) {
return rowFilter(doc, orMatchers, Object.keys(orMatchers));
});
}
if (field === '$not') {
return !rowFilter(doc, matcher, Object.keys(matcher));
}
//`$nor`
return !matcher.find(function (orMatchers) {
return rowFilter(doc, orMatchers, Object.keys(orMatchers));
});
}
function match(userOperator, doc, userValue, parsedField, docFieldValue) {
if (!matchers[userOperator]) {
throw new Error('unknown operator "' + userOperator +
'" - should be one of $eq, $lte, $lt, $gt, $gte, $exists, $ne, $in, ' +
'$nin, $size, $mod, $regex, $elemMatch, $type or $all');
}
return matchers[userOperator](doc, userValue, parsedField, docFieldValue);
}
function fieldExists(docFieldValue) {
return typeof docFieldValue !== 'undefined' && docFieldValue !== null;
}
function fieldIsNotUndefined(docFieldValue) {
return typeof docFieldValue !== 'undefined';
}
function modField(docFieldValue, userValue) {
var divisor = userValue[0];
var mod = userValue[1];
if (divisor === 0) {
throw new Error('Bad divisor, cannot divide by zero');
}
if (parseInt(divisor, 10) !== divisor ) {
throw new Error('Divisor is not an integer');
}
if (parseInt(mod, 10) !== mod ) {
throw new Error('Modulus is not an integer');
}
if (parseInt(docFieldValue, 10) !== docFieldValue) {
return false;
}
return docFieldValue % divisor === mod;
}
function arrayContainsValue(docFieldValue, userValue) {
return userValue.some(function (val) {
if (docFieldValue instanceof Array) {
return docFieldValue.indexOf(val) > -1;
}
return docFieldValue === val;
});
}
function arrayContainsAllValues(docFieldValue, userValue) {
return userValue.every(function (val) {
return docFieldValue.indexOf(val) > -1;
});
}
function arraySize(docFieldValue, userValue) {
return docFieldValue.length === userValue;
}
function regexMatch(docFieldValue, userValue) {
var re = new RegExp(userValue);
return re.test(docFieldValue);
}
function typeMatch(docFieldValue, userValue) {
switch (userValue) {
case 'null':
return docFieldValue === null;
case 'boolean':
return typeof (docFieldValue) === 'boolean';
case 'number':
return typeof (docFieldValue) === 'number';
case 'string':
return typeof (docFieldValue) === 'string';
case 'array':
return docFieldValue instanceof Array;
case 'object':
return ({}).toString.call(docFieldValue) === '[object Object]';
}
throw new Error(userValue + ' not supported as a type.' +
'Please use one of object, string, array, number, boolean or null.');
}
var matchers = {
'$elemMatch': function (doc, userValue, parsedField, docFieldValue) {
if (!Array.isArray(docFieldValue)) {
return false;
}
if (docFieldValue.length === 0) {
return false;
}
if (typeof docFieldValue[0] === 'object') {
return docFieldValue.some(function (val) {
return rowFilter(val, userValue, Object.keys(userValue));
});
}
return docFieldValue.some(function (val) {
return matchSelector(userValue, doc, parsedField, val);
});
},
'$eq': function (doc, userValue, parsedField, docFieldValue) {
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) === 0;
},
'$gte': function (doc, userValue, parsedField, docFieldValue) {
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) >= 0;
},
'$gt': function (doc, userValue, parsedField, docFieldValue) {
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) > 0;
},
'$lte': function (doc, userValue, parsedField, docFieldValue) {
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) <= 0;
},
'$lt': function (doc, userValue, parsedField, docFieldValue) {
return fieldIsNotUndefined(docFieldValue) && collate(docFieldValue, userValue) < 0;
},
'$exists': function (doc, userValue, parsedField, docFieldValue) {
//a field that is null is still considered to exist
if (userValue) {
return fieldIsNotUndefined(docFieldValue);
}
return !fieldIsNotUndefined(docFieldValue);
},
'$mod': function (doc, userValue, parsedField, docFieldValue) {
return fieldExists(docFieldValue) && modField(docFieldValue, userValue);
},
'$ne': function (doc, userValue, parsedField, docFieldValue) {
return userValue.every(function (neValue) {
return collate(docFieldValue, neValue) !== 0;
});
},
'$in': function (doc, userValue, parsedField, docFieldValue) {
return fieldExists(docFieldValue) && arrayContainsValue(docFieldValue, userValue);
},
'$nin': function (doc, userValue, parsedField, docFieldValue) {
return fieldExists(docFieldValue) && !arrayContainsValue(docFieldValue, userValue);
},
'$size': function (doc, userValue, parsedField, docFieldValue) {
return fieldExists(docFieldValue) && arraySize(docFieldValue, userValue);
},
'$all': function (doc, userValue, parsedField, docFieldValue) {
return Array.isArray(docFieldValue) && arrayContainsAllValues(docFieldValue, userValue);
},
'$regex': function (doc, userValue, parsedField, docFieldValue) {
return fieldExists(docFieldValue) && regexMatch(docFieldValue, userValue);
},
'$type': function (doc, userValue, parsedField, docFieldValue) {
return typeMatch(docFieldValue, userValue);
}
};
// return true if the given doc matches the supplied selector
function matchesSelector(doc, selector) {
/* istanbul ignore if */
if (typeof selector !== 'object') {
// match the CouchDB error message
throw 'Selector error: expected a JSON object';
}
selector = massageSelector(selector);
var row = {
'doc': doc
};
var rowsMatched = filterInMemoryFields([row], { 'selector': selector }, Object.keys(selector));
return rowsMatched && rowsMatched.length === 1;
}
function evalFilter(input) {
return scopeEval('"use strict";\nreturn ' + input + ';', {});
}
function evalView(input) {
var code = [
'return function(doc) {',
' "use strict";',
' var emitted = false;',
' var emit = function (a, b) {',
' emitted = true;',
' };',
' var view = ' + input + ';',
' view(doc);',
' if (emitted) {',
' return true;',
' }',
'};'
].join('\n');
return scopeEval(code, {});
}
function validate(opts, callback) {
if (opts.selector) {
if (opts.filter && opts.filter !== '_selector') {
var filterName = typeof opts.filter === 'string' ?
opts.filter : 'function';
return callback(new Error('selector invalid for filter "' + filterName + '"'));
}
}
callback();
}
function normalize(opts) {
if (opts.view && !opts.filter) {
opts.filter = '_view';
}
if (opts.selector && !opts.filter) {
opts.filter = '_selector';
}
if (opts.filter && typeof opts.filter === 'string') {
if (opts.filter === '_view') {
opts.view = normalizeDesignDocFunctionName(opts.view);
} else {
opts.filter = normalizeDesignDocFunctionName(opts.filter);
}
}
}
function shouldFilter(changesHandler$$1, opts) {
return opts.filter && typeof opts.filter === 'string' &&
!opts.doc_ids && !isRemote(changesHandler$$1.db);
}
function filter(changesHandler$$1, opts) {
var callback = opts.complete;
if (opts.filter === '_view') {
if (!opts.view || typeof opts.view !== 'string') {
var err = createError(BAD_REQUEST,
'`view` filter parameter not found or invalid.');
return callback(err);
}
// fetch a view from a design doc, make it behave like a filter
var viewName = parseDesignDocFunctionName(opts.view);
changesHandler$$1.db.get('_design/' + viewName[0], function (err, ddoc) {
/* istanbul ignore if */
if (changesHandler$$1.isCancelled) {
return callback(null, {status: 'cancelled'});
}
/* istanbul ignore next */
if (err) {
return callback(generateErrorFromResponse(err));
}
var mapFun = ddoc && ddoc.views && ddoc.views[viewName[1]] &&
ddoc.views[viewName[1]].map;
if (!mapFun) {
return callback(createError(MISSING_DOC,
(ddoc.views ? 'missing json key: ' + viewName[1] :
'missing json key: views')));
}
opts.filter = evalView(mapFun);
changesHandler$$1.doChanges(opts);
});
} else if (opts.selector) {
opts.filter = function (doc) {
return matchesSelector(doc, opts.selector);
};
changesHandler$$1.doChanges(opts);
} else {
// fetch a filter from a design doc
var filterName = parseDesignDocFunctionName(opts.filter);
changesHandler$$1.db.get('_design/' + filterName[0], function (err, ddoc) {
/* istanbul ignore if */
if (changesHandler$$1.isCancelled) {
return callback(null, {status: 'cancelled'});
}
/* istanbul ignore next */
if (err) {
return callback(generateErrorFromResponse(err));
}
var filterFun = ddoc && ddoc.filters && ddoc.filters[filterName[1]];
if (!filterFun) {
return callback(createError(MISSING_DOC,
((ddoc && ddoc.filters) ? 'missing json key: ' + filterName[1]
: 'missing json key: filters')));
}
opts.filter = evalFilter(filterFun);
changesHandler$$1.doChanges(opts);
});
}
}
function applyChangesFilterPlugin(PouchDB) {
PouchDB._changesFilterPlugin = {
validate: validate,
normalize: normalize,
shouldFilter: shouldFilter,
filter: filter
};
}
// TODO: remove from pouchdb-core (breaking)
PouchDB$2.plugin(debugPouch);
// TODO: remove from pouchdb-core (breaking)
PouchDB$2.plugin(applyChangesFilterPlugin);
PouchDB$2.version = version;
var thisAtob = function (str) {
return atob(str);
};
var thisBtoa = function (str) {
return btoa(str);
};
// Abstracts constructing a Blob object, so it also works in older
// browsers that don't support the native Blob constructor (e.g.
// old QtWebKit versions, Android < 4.4).
function createBlob(parts, properties) {
/* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */
parts = parts || [];
properties = properties || {};
try {
return new Blob(parts, properties);
} catch (e) {
if (e.name !== "TypeError") {
throw e;
}
var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder :
WebKitBlobBuilder;
var builder = new Builder();
for (var i = 0; i < parts.length; i += 1) {
builder.append(parts[i]);
}
return builder.getBlob(properties.type);
}
}
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
// encode-decode-image-with-base64-breaks-image (2013-04-21)
function binaryStringToArrayBuffer(bin) {
var length = bin.length;
var buf = new ArrayBuffer(length);
var arr = new Uint8Array(buf);
for (var i = 0; i < length; i++) {
arr[i] = bin.charCodeAt(i);
}
return buf;
}
function binStringToBluffer(binString, type) {
return createBlob([binaryStringToArrayBuffer(binString)], {type: type});
}
function b64ToBluffer(b64, type) {
return binStringToBluffer(thisAtob(b64), type);
}
//Can't find original post, but this is close
//http://stackoverflow.com/questions/6965107/ (continues on next line)
//converting-between-strings-and-arraybuffers
function arrayBufferToBinaryString(buffer) {
var binary = '';
var bytes = new Uint8Array(buffer);
var length = bytes.byteLength;
for (var i = 0; i < length; i++) {
binary += String.fromCharCode(bytes[i]);
}
return binary;
}
// shim for browsers that don't support it
function readAsBinaryString(blob, callback) {
if (typeof FileReader === 'undefined') {
// fix for Firefox in a web worker
// https://bugzilla.mozilla.org/show_bug.cgi?id=901097
return callback(arrayBufferToBinaryString(
new FileReaderSync().readAsArrayBuffer(blob)));
}
var reader = new FileReader();
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
reader.onloadend = function (e) {
var result = e.target.result || '';
if (hasBinaryString) {
return callback(result);
}
callback(arrayBufferToBinaryString(result));
};
if (hasBinaryString) {
reader.readAsBinaryString(blob);
} else {
reader.readAsArrayBuffer(blob);
}
}
function blobToBinaryString(blobOrBuffer, callback) {
readAsBinaryString(blobOrBuffer, function (bin) {
callback(bin);
});
}
function blobToBase64(blobOrBuffer, callback) {
blobToBinaryString(blobOrBuffer, function (base64) {
callback(thisBtoa(base64));
});
}
// simplified API. universal browser support is assumed
function readAsArrayBuffer(blob, callback) {
if (typeof FileReader === 'undefined') {
// fix for Firefox in a web worker:
// https://bugzilla.mozilla.org/show_bug.cgi?id=901097
return callback(new FileReaderSync().readAsArrayBuffer(blob));
}
var reader = new FileReader();
reader.onloadend = function (e) {
var result = e.target.result || new ArrayBuffer(0);
callback(result);
};
reader.readAsArrayBuffer(blob);
}
// this is not used in the browser
var DOC_STORE = 'docs';
var META_STORE = 'meta';
function idbError(callback) {
return function (evt) {
var message = 'unknown_error';
if (evt.target && evt.target.error) {
message = evt.target.error.name || evt.target.error.message;
}
callback(createError(IDB_ERROR, message, evt.type));
};
}
function processAttachment(name, src, doc, isBinary) {
delete doc._attachments[name].stub;
if (isBinary) {
doc._attachments[name].data =
src.attachments[doc._attachments[name].digest].data;
return PouchPromise.resolve();
}
return new PouchPromise(function (resolve) {
var data = src.attachments[doc._attachments[name].digest].data;
readAsBinaryString(data, function (binString) {
doc._attachments[name].data = thisBtoa(binString);
delete doc._attachments[name].length;
resolve();
});
});
}
function openTransactionSafely(idb, stores, mode) {
try {
return {
txn: idb.transaction(stores, mode)
};
} catch (err) {
return {
error: err
};
}
}
var IDB_VERSION = 1;
function createSchema(db) {
var docStore = db.createObjectStore(DOC_STORE, {keyPath : 'id'});
docStore.createIndex('seq', 'seq', {unique: true});
db.createObjectStore(META_STORE, {keyPath: 'id'});
}
var setup = function (openDatabases, api, opts) {
if (opts.name in openDatabases) {
return openDatabases[opts.name];
}
openDatabases[opts.name] = new PouchPromise(function (resolve) {
var req = opts.storage
? indexedDB.open(opts.name, {version: IDB_VERSION, storage: opts.storage})
: indexedDB.open(opts.name, IDB_VERSION);
req.onupgradeneeded = function (e) {
var db = e.target.result;
if (e.oldVersion < 1) {
createSchema(db);
}
};
req.onsuccess = function (e) {
var idb = e.target.result;
idb.onabort = function (e) {
console.error('Database has a global failure', e.target.error);
delete openDatabases[opts.name];
idb.close();
};
var metadata = {id: META_STORE};
var txn = idb.transaction([META_STORE], 'readwrite');
txn.oncomplete = function () {
resolve({idb: idb, metadata: metadata});
};
var metaStore = txn.objectStore(META_STORE);
metaStore.get(META_STORE).onsuccess = function (e) {
metadata = e.target.result || metadata;
if (!('doc_count' in metadata)) {
metadata.doc_count = 0;
}
if (!('seq' in metadata)) {
metadata.seq = 0;
}
if (!('db_uuid' in metadata)) {
metadata.db_uuid = uuid();
metaStore.put(metadata);
}
};
};
});
return openDatabases[opts.name];
};
var info = function (db, metadata, callback) {
callback(null, {
doc_count: metadata.doc_count,
update_seq: metadata.seq
});
};
var get = function (db, id, opts, callback) {
var openTxn = openTransactionSafely(db, [DOC_STORE], 'readonly');
if (openTxn.error) {
return callback(openTxn.error);
}
openTxn.txn.objectStore(DOC_STORE).get(id).onsuccess = function (e) {
var doc = e.target.result;
var rev;
if (!opts.rev) {
rev = (doc && doc.rev);
} else {
rev = opts.latest ? latest(opts.rev, doc.metadata) : opts.rev;
}
if (!doc || (doc.deleted && !opts.rev) || !(rev in doc.revs)) {
callback(createError(MISSING_DOC, 'missing'));
return;
}
var result = doc.revs[rev].data;
result._id = doc.id;
result._rev = rev;
// WARNING: expecting possible old format
callback(null, {
doc: result,
metadata: doc,
ctx: openTxn
});
};
};
var getAttachment = function (db, docId, attachId, opts, cb) {
var openTxn = openTransactionSafely(db, [DOC_STORE], 'readonly');
if (openTxn.error) {
return cb(openTxn.error);
}
var attachment;
openTxn.txn.objectStore(DOC_STORE).get(docId).onsuccess = function (e) {
var doc = e.target.result;
var rev = opts.rev ? doc.revs[opts.rev].data : doc.data;
var digest = rev._attachments[attachId].digest;
attachment = doc.attachments[digest].data;
};
openTxn.txn.oncomplete = function () {
if (opts.binary) {
cb(null, attachment);
} else {
readAsBinaryString(attachment, function (binString) {
cb(null, thisBtoa(binString));
});
}
};
openTxn.txn.onabort = cb;
};
function toObject(array) {
return array.reduce(function (obj, item) {
obj[item] = true;
return obj;
}, {});
}
// List of top level reserved words for doc
var reservedWords = toObject([
'_id',
'_rev',
'_attachments',
'_deleted',
'_revisions',
'_revs_info',
'_conflicts',
'_deleted_conflicts',
'_local_seq',
'_rev_tree',
//replication documents
'_replication_id',
'_replication_state',
'_replication_state_time',
'_replication_state_reason',
'_replication_stats',
// Specific to Couchbase Sync Gateway
'_removed'
]);
// List of reserved words that should end up the document
var dataWords = toObject([
'_attachments',
//replication documents
'_replication_id',
'_replication_state',
'_replication_state_time',
'_replication_state_reason',
'_replication_stats'
]);
function parseRevisionInfo(rev) {
if (!/^\d+\-./.test(rev)) {
return createError(INVALID_REV);
}
var idx = rev.indexOf('-');
var left = rev.substring(0, idx);
var right = rev.substring(idx + 1);
return {
prefix: parseInt(left, 10),
id: right
};
}
function makeRevTreeFromRevisions(revisions, opts) {
var pos = revisions.start - revisions.ids.length + 1;
var revisionIds = revisions.ids;
var ids = [revisionIds[0], opts, []];
for (var i = 1, len = revisionIds.length; i < len; i++) {
ids = [revisionIds[i], {status: 'missing'}, [ids]];
}
return [{
pos: pos,
ids: ids
}];
}
// Preprocess documents, parse their revisions, assign an id and a
// revision for new writes that are missing them, etc
function parseDoc(doc, newEdits) {
var nRevNum;
var newRevId;
var revInfo;
var opts = {status: 'available'};
if (doc._deleted) {
opts.deleted = true;
}
if (newEdits) {
if (!doc._id) {
doc._id = uuid();
}
newRevId = uuid(32, 16).toLowerCase();
if (doc._rev) {
revInfo = parseRevisionInfo(doc._rev);
if (revInfo.error) {
return revInfo;
}
doc._rev_tree = [{
pos: revInfo.prefix,
ids: [revInfo.id, {status: 'missing'}, [[newRevId, opts, []]]]
}];
nRevNum = revInfo.prefix + 1;
} else {
doc._rev_tree = [{
pos: 1,
ids : [newRevId, opts, []]
}];
nRevNum = 1;
}
} else {
if (doc._revisions) {
doc._rev_tree = makeRevTreeFromRevisions(doc._revisions, opts);
nRevNum = doc._revisions.start;
newRevId = doc._revisions.ids[0];
}
if (!doc._rev_tree) {
revInfo = parseRevisionInfo(doc._rev);
if (revInfo.error) {
return revInfo;
}
nRevNum = revInfo.prefix;
newRevId = revInfo.id;
doc._rev_tree = [{
pos: nRevNum,
ids: [newRevId, opts, []]
}];
}
}
invalidIdError(doc._id);
doc._rev = nRevNum + '-' + newRevId;
var result = {metadata : {}, data : {}};
for (var key in doc) {
/* istanbul ignore else */
if (Object.prototype.hasOwnProperty.call(doc, key)) {
var specialKey = key[0] === '_';
if (specialKey && !reservedWords[key]) {
var error = createError(DOC_VALIDATION, key);
error.message = DOC_VALIDATION.message + ': ' + key;
throw error;
} else if (specialKey && !dataWords[key]) {
result.metadata[key.slice(1)] = doc[key];
} else {
result.data[key] = doc[key];
}
}
}
return result;
}
var setImmediateShim = global.setImmediate || global.setTimeout;
var MD5_CHUNK_SIZE = 32768;
function rawToBase64(raw) {
return thisBtoa(raw);
}
function sliceBlob(blob$$1, start, end) {
if (blob$$1.webkitSlice) {
return blob$$1.webkitSlice(start, end);
}
return blob$$1.slice(start, end);
}
function appendBlob(buffer, blob$$1, start, end, callback) {
if (start > 0 || end < blob$$1.size) {
// only slice blob if we really need to
blob$$1 = sliceBlob(blob$$1, start, end);
}
readAsArrayBuffer(blob$$1, function (arrayBuffer) {
buffer.append(arrayBuffer);
callback();
});
}
function appendString(buffer, string, start, end, callback) {
if (start > 0 || end < string.length) {
// only create a substring if we really need to
string = string.substring(start, end);
}
buffer.appendBinary(string);
callback();
}
function binaryMd5(data, callback) {
var inputIsString = typeof data === 'string';
var len = inputIsString ? data.length : data.size;
var chunkSize = Math.min(MD5_CHUNK_SIZE, len);
var chunks = Math.ceil(len / chunkSize);
var currentChunk = 0;
var buffer = inputIsString ? new Md5() : new Md5.ArrayBuffer();
var append = inputIsString ? appendString : appendBlob;
function next() {
setImmediateShim(loadNextChunk);
}
function done() {
var raw = buffer.end(true);
var base64 = rawToBase64(raw);
callback(base64);
buffer.destroy();
}
function loadNextChunk() {
var start = currentChunk * chunkSize;
var end = start + chunkSize;
currentChunk++;
if (currentChunk < chunks) {
append(buffer, data, start, end, next);
} else {
append(buffer, data, start, end, done);
}
}
loadNextChunk();
}
var bulkDocs = function (db, req, opts, metadata, dbOpts, idbChanges, callback) {
var txn;
// TODO: I would prefer to get rid of these globals
var error;
var results = [];
var docs = [];
var lastWriteIndex;
var revsLimit = dbOpts.revs_limit || 1000;
// We only need to track 1 revision for local documents
function docsRevsLimit(doc) {
return /^_local/.test(doc.id) ? 1 : revsLimit;
}
function rootIsMissing(doc) {
return doc.rev_tree[0].ids[1].status === 'missing';
}
function parseBase64(data) {
try {
return atob(data);
} catch (e) {
return {
error: createError(BAD_ARG, 'Attachment is not a valid base64 string')
};
}
}
// Reads the original doc from the store if available
// TODO: I think we can use getAll to remove most of this ugly code?
function fetchExistingDocs(txn, docs) {
var fetched = 0;
var oldDocs = {};
function readDone(e) {
if (e.target.result) {
oldDocs[e.target.result.id] = e.target.result;
}
if (++fetched === docs.length) {
processDocs$$1(txn, docs, oldDocs);
}
}
docs.forEach(function (doc) {
txn.objectStore(DOC_STORE).get(doc.id).onsuccess = readDone;
});
}
function processDocs$$1(txn, docs, oldDocs) {
docs.forEach(function (doc, i) {
var newDoc;
// The first document write cannot be a deletion
if ('was_delete' in opts && !(oldDocs.hasOwnProperty(doc.id))) {
newDoc = createError(MISSING_DOC, 'deleted');
// The first write of a document cannot specify a revision
} else if (opts.new_edits &&
!oldDocs.hasOwnProperty(doc.id) &&
rootIsMissing(doc)) {
newDoc = createError(REV_CONFLICT);
// Update the existing document
} else if (oldDocs.hasOwnProperty(doc.id)) {
newDoc = update(txn, doc, oldDocs[doc.id]);
// The update can be rejected if it is an update to an existing
// revision, if so skip it
if (newDoc == false) {
return;
}
// New document
} else {
// Ensure new documents are also stemmed
var merged = merge([], doc.rev_tree[0], docsRevsLimit(doc));
doc.rev_tree = merged.tree;
doc.stemmedRevs = merged.stemmedRevs;
newDoc = doc;
newDoc.isNewDoc = true;
newDoc.wasDeleted = doc.revs[doc.rev].deleted ? 1 : 0;
}
if (newDoc.error) {
results[i] = newDoc;
} else {
oldDocs[newDoc.id] = newDoc;
lastWriteIndex = i;
write(txn, newDoc, i);
}
});
}
// Converts from the format returned by parseDoc into the new format
// we use to store
function convertDocFormat(doc) {
var newDoc = {
id: doc.metadata.id,
rev: doc.metadata.rev,
rev_tree: doc.metadata.rev_tree,
writtenRev: doc.metadata.rev,
revs: doc.metadata.revs || {}
};
newDoc.revs[newDoc.rev] = {
data: doc.data,
deleted: doc.metadata.deleted
};
return newDoc;
}
function update(txn, doc, oldDoc) {
// Ignore updates to existing revisions
if (doc.rev in oldDoc.revs) {
return false;
}
var isRoot = /^1-/.test(doc.rev);
// Reattach first writes after a deletion to last deleted tree
if (oldDoc.deleted && !doc.deleted && opts.new_edits && isRoot) {
var tmp = doc.revs[doc.rev].data;
tmp._rev = oldDoc.rev;
tmp._id = oldDoc.id;
doc = convertDocFormat(parseDoc(tmp, opts.new_edits));
}
var merged = merge(oldDoc.rev_tree, doc.rev_tree[0], docsRevsLimit(doc));
doc.stemmedRevs = merged.stemmedRevs;
doc.rev_tree = merged.tree;
// Merge the old and new rev data
var revs = oldDoc.revs;
revs[doc.rev] = doc.revs[doc.rev];
doc.revs = revs;
doc.attachments = oldDoc.attachments;
var inConflict = opts.new_edits && (((oldDoc.deleted && doc.deleted) ||
(!oldDoc.deleted && merged.conflicts !== 'new_leaf') ||
(oldDoc.deleted && !doc.deleted && merged.conflicts === 'new_branch')));
if (inConflict) {
return createError(REV_CONFLICT);
}
doc.wasDeleted = oldDoc.deleted;
return doc;
}
function write(txn, doc, i) {
// We copy the data from the winning revision into the root
// of the document so that it can be indexed
var winningRev$$1 = winningRev(doc);
var isLocal = /^_local/.test(doc.id);
doc.data = doc.revs[winningRev$$1].data;
doc.rev = winningRev$$1;
// .deleted needs to be an int for indexing
doc.deleted = doc.revs[winningRev$$1].deleted ? 1 : 0;
// Bump the seq for every new (non local) revision written
// TODO: index expects a unique seq, not sure if ignoring local will
// work
if (!isLocal) {
doc.seq = ++metadata.seq;
var delta = 0;
// If its a new document, we wont decrement if deleted
if (doc.isNewDoc) {
delta = doc.deleted ? 0 : 1;
} else if (doc.wasDeleted !== doc.deleted) {
delta = doc.deleted ? -1 : 1;
}
metadata.doc_count += delta;
}
delete doc.isNewDoc;
delete doc.wasDeleted;
// If there have been revisions stemmed when merging trees,
// delete their data
if (doc.stemmedRevs) {
doc.stemmedRevs.forEach(function (rev) { delete doc.revs[rev]; });
}
delete doc.stemmedRevs;
if (!('attachments' in doc)) {
doc.attachments = {};
}
if (doc.data._attachments) {
for (var k in doc.data._attachments) {
var attachment = doc.data._attachments[k];
if (attachment.stub) {
if (!(attachment.digest in doc.attachments)) {
error = createError(MISSING_STUB);
// TODO: Not sure how safe this manual abort is, seeing
// console issues
txn.abort();
return;
}
doc.attachments[attachment.digest].revs[doc.writtenRev] = true;
} else {
doc.attachments[attachment.digest] = attachment;
doc.attachments[attachment.digest].revs = {};
doc.attachments[attachment.digest].revs[doc.writtenRev] = true;
doc.data._attachments[k] = {
stub: true,
digest: attachment.digest,
content_type: attachment.content_type,
length: attachment.length,
revpos: parseInt(doc.writtenRev, 10)
};
}
}
}
delete doc.writtenRev;
// Local documents have different revision handling
if (isLocal && doc.deleted) {
txn.objectStore(DOC_STORE).delete(doc.id).onsuccess = function () {
results[i] = {
ok: true,
id: doc.id,
rev: '0-0'
};
};
updateSeq(i);
return;
}
txn.objectStore(DOC_STORE).put(doc).onsuccess = function () {
results[i] = {
ok: true,
id: doc.id,
rev: doc.rev
};
updateSeq(i);
};
}
function updateSeq(i) {
if (i === lastWriteIndex) {
txn.objectStore(META_STORE).put(metadata);
}
}
function preProcessAttachment(attachment) {
if (attachment.stub) {
return PouchPromise.resolve(attachment);
}
var binData;
if (typeof attachment.data === 'string') {
binData = parseBase64(attachment.data);
if (binData.error) {
return PouchPromise.reject(binData.error);
}
attachment.data = binStringToBluffer(binData, attachment.content_type);
} else {
binData = attachment.data;
}
return new PouchPromise(function (resolve) {
binaryMd5(binData, function (result) {
attachment.digest = 'md5-' + result;
attachment.length = binData.size || binData.length || 0;
resolve(attachment);
});
});
}
function preProcessAttachments() {
var promises = docs.map(function (doc) {
var data = doc.revs[doc.rev].data;
if (!data._attachments) {
return PouchPromise.resolve(data);
}
var attachments = Object.keys(data._attachments).map(function (k) {
data._attachments[k].name = k;
return preProcessAttachment(data._attachments[k]);
});
return PouchPromise.all(attachments).then(function (newAttachments) {
var processed = {};
newAttachments.forEach(function (attachment) {
processed[attachment.name] = attachment;
delete attachment.name;
});
data._attachments = processed;
return data;
});
});
return PouchPromise.all(promises);
}
for (var i = 0, len = req.docs.length; i < len; i++) {
var result;
// TODO: We should get rid of throwing for invalid docs, also not sure
// why this is needed in idb-next and not idb
try {
result = parseDoc(req.docs[i], opts.new_edits);
} catch (err) {
result = err;
}
if (result.error) {
return callback(result);
}
// Ideally parseDoc would return data in this format, but it is currently
// shared
var newDoc = {
id: result.metadata.id,
rev: result.metadata.rev,
rev_tree: result.metadata.rev_tree,
revs: {}
};
newDoc.revs[newDoc.rev] = {
data: result.data,
deleted: result.metadata.deleted
};
docs.push(convertDocFormat(result));
}
preProcessAttachments().then(function () {
txn = db.transaction([DOC_STORE, META_STORE], 'readwrite');
txn.onabort = function () {
callback(error);
};
txn.ontimeout = idbError(callback);
txn.oncomplete = function () {
idbChanges.notify(dbOpts.name);
callback(null, results);
};
// We would like to use promises here, but idb sucks
fetchExistingDocs(txn, docs);
}).catch(function (err) {
callback(err);
});
};
function createKeyRange(start, end, inclusiveEnd, key, descending) {
try {
if (start && end) {
if (descending) {
return IDBKeyRange.bound(end, start, !inclusiveEnd, false);
} else {
return IDBKeyRange.bound(start, end, false, !inclusiveEnd);
}
} else if (start) {
if (descending) {
return IDBKeyRange.upperBound(start);
} else {
return IDBKeyRange.lowerBound(start);
}
} else if (end) {
if (descending) {
return IDBKeyRange.lowerBound(end, !inclusiveEnd);
} else {
return IDBKeyRange.upperBound(end, !inclusiveEnd);
}
} else if (key) {
return IDBKeyRange.only(key);
}
} catch (e) {
return {error: e};
}
return null;
}
function handleKeyRangeError(opts, metadata, err, callback) {
if (err.name === "DataError" && err.code === 0) {
// data error, start is less than end
return callback(null, {
total_rows: metadata.doc_count,
offset: opts.skip,
rows: []
});
}
callback(createError(IDB_ERROR, err.name, err.message));
}
var allDocs = function (idb, metadata, opts, callback) {
// TODO: Weird hack, I dont like it
if (opts.limit === 0) {
return callback(null, {
total_rows: metadata.doc_count,
offset: opts.skip,
rows: []
});
}
var results = [];
var processing = [];
var start = 'startkey' in opts ? opts.startkey : false;
var end = 'endkey' in opts ? opts.endkey : false;
var key = 'key' in opts ? opts.key : false;
var skip = opts.skip || 0;
var limit = typeof opts.limit === 'number' ? opts.limit : -1;
var inclusiveEnd = opts.inclusive_end !== false;
var descending = 'descending' in opts && opts.descending ? 'prev' : null;
var keyRange = createKeyRange(start, end, inclusiveEnd, key, descending);
if (keyRange && keyRange.error) {
return handleKeyRangeError(opts, metadata, keyRange.error, callback);
}
var txn = idb.transaction([DOC_STORE], 'readonly');
var docStore = txn.objectStore(DOC_STORE);
var cursor = descending ?
docStore.openCursor(keyRange, descending) :
docStore.openCursor(keyRange);
cursor.onsuccess = function (e) {
var doc = e.target.result && e.target.result.value;
// TODO: I have seen this before, but want to make sure I
// know exactly why its needed
if (!doc) { return; }
// Skip local docs
if (/^_local/.test(doc.id)) {
return e.target.result.continue();
}
var row = {
id: doc.id,
key: doc.id,
value: {
rev: doc.rev
}
};
function include_doc(row, doc) {
row.doc = doc.data;
row.doc._id = doc.id;
row.doc._rev = doc.rev;
if (opts.conflicts) {
var conflicts = collectConflicts(doc);
if (conflicts.length) {
row.doc._conflicts = conflicts;
}
}
if (opts.attachments && doc.data._attachments) {
for (var name in doc.data._attachments) {
processing.push(processAttachment(name, doc, row.doc, opts.binary));
}
}
}
var deleted = doc.deleted;
// TODO: I do not like this code
if (opts.deleted === 'ok') {
results.push(row);
if (deleted) {
row.value.deleted = true;
row.doc = null;
} else if (opts.include_docs) {
include_doc(row, doc);
}
} else if (!deleted && skip-- <= 0) {
results.push(row);
if (opts.include_docs) {
include_doc(row, doc);
}
if (--limit === 0) {
return;
}
}
e.target.result.continue();
};
txn.oncomplete = function () {
PouchPromise.all(processing).then(function () {
callback(null, {
total_rows: metadata.doc_count,
offset: 0,
rows: results
});
});
};
};
var changes = function (idb, idbChanges, api, dbOpts, opts) {
if (opts.continuous) {
var id = dbOpts.name + ':' + uuid();
idbChanges.addListener(dbOpts.name, id, api, opts);
idbChanges.notify(dbOpts.name);
return {
cancel: function () {
idbChanges.removeListener(dbOpts.name, id);
}
};
}
var limit = 'limit' in opts ? opts.limit : -1;
if (limit === 0) {
limit = 1;
}
var returnDocs = 'return_docs' in opts ? opts.return_docs :
'returnDocs' in opts ? opts.returnDocs : true;
var openTxn = openTransactionSafely(idb, [DOC_STORE], 'readonly');
if (openTxn.error) {
return opts.complete(openTxn.error);
}
var store = openTxn.txn.objectStore(DOC_STORE).index('seq');
var filter = filterChange(opts);
var received = 0;
var lastSeq = opts.since || 0;
var results = [];
var processing = [];
function onReqSuccess(e) {
if (!e.target.result) { return; }
var cursor = e.target.result;
var doc = cursor.value;
doc.data._id = doc.id;
doc.data._rev = doc.rev;
if (doc.deleted) {
doc.data._deleted = true;
}
if (opts.doc_ids && opts.doc_ids.indexOf(doc.id) === -1) {
return cursor.continue();
}
// WARNING: expecting possible old format
var change = opts.processChange(doc.data, doc, opts);
change.seq = doc.seq;
lastSeq = doc.seq;
var filtered = filter(change);
// If its an error
if (typeof filtered === 'object') {
return opts.complete(filtered);
}
if (filtered) {
received++;
if (returnDocs) {
results.push(change);
}
if (opts.include_docs && opts.attachments && doc.data._attachments) {
var promises = [];
for (var name in doc.data._attachments) {
var p = processAttachment(name, doc, change.doc, opts.binary);
// We add the processing promise to 2 arrays, one tracks all
// the promises needed before we fire onChange, the other
// ensure we process all attachments before onComplete
promises.push(p);
processing.push(p);
}
PouchPromise.all(promises).then(function () {
opts.onChange(change);
});
} else {
opts.onChange(change);
}
}
if (received !== limit) {
cursor.continue();
}
}
function onTxnComplete() {
PouchPromise.all(processing).then(function () {
opts.complete(null, {
results: results,
last_seq: lastSeq
});
});
}
var req;
if (opts.descending) {
req = store.openCursor(null, 'prev');
} else {
req = store.openCursor(IDBKeyRange.lowerBound(opts.since, true));
}
openTxn.txn.oncomplete = onTxnComplete;
req.onsuccess = onReqSuccess;
};
var getRevisionTree = function (db, id, callback) {
var txn = db.transaction([DOC_STORE], 'readonly');
var req = txn.objectStore(DOC_STORE).get(id);
req.onsuccess = function (e) {
if (!e.target.result) {
callback(createError(MISSING_DOC));
} else {
callback(null, e.target.result.rev_tree);
}
};
};
var doCompaction = function (idb, id, revs, callback) {
var txn = idb.transaction([DOC_STORE], 'readwrite');
txn.objectStore(DOC_STORE).get(id).onsuccess = function (e) {
var doc = e.target.result;
traverseRevTree(doc.rev_tree, function (isLeaf, pos, revHash, ctx, opts) {
var rev = pos + '-' + revHash;
if (revs.indexOf(rev) !== -1) {
opts.status = 'missing';
}
});
var attachments = [];
revs.forEach(function (rev) {
if (rev in doc.revs) {
// Make a list of attachments that are used by the revisions being
// deleted
if (doc.revs[rev].data._attachments) {
for (var k in doc.revs[rev].data._attachments) {
attachments.push(doc.revs[rev].data._attachments[k].digest);
}
}
delete doc.revs[rev];
}
});
// Attachments have a list of revisions that are using them, when
// that list becomes empty we can delete the attachment.
attachments.forEach(function (digest) {
revs.forEach(function (rev) {
delete doc.attachments[digest].revs[rev];
});
if (!Object.keys(doc.attachments[digest].revs).length) {
delete doc.attachments[digest];
}
});
txn.objectStore(DOC_STORE).put(doc);
};
txn.oncomplete = function () {
callback();
};
};
var destroy = function (dbOpts, openDatabases, idbChanges, callback) {
idbChanges.removeAllListeners(dbOpts.name);
function doDestroy() {
var req = indexedDB.deleteDatabase(dbOpts.name);
req.onsuccess = function () {
delete openDatabases[dbOpts.name];
callback(null, {ok: true});
};
}
// If the database is open we need to close it
if (dbOpts.name in openDatabases) {
openDatabases[dbOpts.name].then(function (res) {
res.idb.close();
doDestroy();
});
} else {
doDestroy();
}
};
// API implementations
var ADAPTER_NAME = 'indexeddb';
// TODO: Constructor should be capitalised
var idbChanges = new Changes$1();
// A shared list of database handles
var openDatabases = {};
function IdbPouch(dbOpts, callback) {
var api = this;
var metadata = {};
// This is a wrapper function for any methods that need an
// active database handle it will recall itself but with
// the database handle as the first argument
var $ = function (fun) {
return function () {
var args = Array.prototype.slice.call(arguments);
setup(openDatabases, api, dbOpts).then(function (res) {
metadata = res.metadata;
args.unshift(res.idb);
fun.apply(api, args);
});
};
};
api._remote = false;
api.type = function () { return ADAPTER_NAME; };
api._id = $(function (idb, cb) {
cb(null, metadata.db_uuid);
});
api._info = $(function (idb, cb) {
return info(idb, metadata, cb);
});
api._get = $(get);
api._bulkDocs = $(function (idb, req, opts, callback) {
return bulkDocs(idb, req, opts, metadata, dbOpts, idbChanges, callback);
});
api._allDocs = $(function (idb, opts, cb) {
return allDocs(idb, metadata, opts, cb);
});
api._getAttachment = $(function (idb, docId, attachId, attachment, opts, cb) {
return getAttachment(idb, docId, attachId, opts, cb);
});
api._changes = $(function (idb, opts) {
return changes(idb, idbChanges, api, dbOpts, opts);
});
api._getRevisionTree = $(getRevisionTree);
api._doCompaction = $(doCompaction);
api._destroy = function (opts, callback) {
return destroy(dbOpts, openDatabases, idbChanges, callback);
};
api._close = $(function (db, cb) {
delete openDatabases[dbOpts.name];
db.close();
cb();
});
// TODO: this setTimeout seems nasty, if its needed lets
// figure out / explain why
setTimeout(function () {
callback(null, api);
});
}
// TODO: this isnt really valid permanently, just being lazy to start
IdbPouch.valid = function () {
return true;
};
var idbPouch = function (PouchDB) {
PouchDB.adapter(ADAPTER_NAME, IdbPouch, true);
};
/* global fetch */
/* global Headers */
function wrappedFetch() {
var wrappedPromise = {};
var promise = new PouchPromise(function (resolve, reject) {
wrappedPromise.resolve = resolve;
wrappedPromise.reject = reject;
});
var args = new Array(arguments.length);
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i];
}
wrappedPromise.promise = promise;
PouchPromise.resolve().then(function () {
return fetch.apply(null, args);
}).then(function (response) {
wrappedPromise.resolve(response);
}).catch(function (error) {
wrappedPromise.reject(error);
});
return wrappedPromise;
}
function fetchRequest(options, callback) {
var wrappedPromise, timer, response;
var headers = new Headers();
var fetchOptions = {
method: options.method,
credentials: 'include',
headers: headers
};
if (options.json) {
headers.set('Accept', 'application/json');
headers.set('Content-Type', options.headers['Content-Type'] ||
'application/json');
}
if (options.body &&
options.processData &&
typeof options.body !== 'string') {
fetchOptions.body = JSON.stringify(options.body);
} else if ('body' in options) {
fetchOptions.body = options.body;
} else {
fetchOptions.body = null;
}
Object.keys(options.headers).forEach(function (key) {
if (options.headers.hasOwnProperty(key)) {
headers.set(key, options.headers[key]);
}
});
wrappedPromise = wrappedFetch(options.url, fetchOptions);
if (options.timeout > 0) {
timer = setTimeout(function () {
wrappedPromise.reject(new Error('Load timeout for resource: ' +
options.url));
}, options.timeout);
}
wrappedPromise.promise.then(function (fetchResponse) {
response = {
statusCode: fetchResponse.status
};
if (options.timeout > 0) {
clearTimeout(timer);
}
if (response.statusCode >= 200 && response.statusCode < 300) {
return options.binary ? fetchResponse.blob() : fetchResponse.text();
}
return fetchResponse.json();
}).then(function (result) {
if (response.statusCode >= 200 && response.statusCode < 300) {
callback(null, response, result);
} else {
result.status = response.statusCode;
callback(result);
}
}).catch(function (error) {
if (!error) {
// this happens when the listener is canceled
error = new Error('canceled');
}
callback(error);
});
return {abort: wrappedPromise.reject};
}
function xhRequest(options, callback) {
var xhr, timer;
var timedout = false;
var abortReq = function () {
xhr.abort();
cleanUp();
};
var timeoutReq = function () {
timedout = true;
xhr.abort();
cleanUp();
};
var ret = {abort: abortReq};
var cleanUp = function () {
clearTimeout(timer);
ret.abort = function () {};
if (xhr) {
xhr.onprogress = undefined;
if (xhr.upload) {
xhr.upload.onprogress = undefined;
}
xhr.onreadystatechange = undefined;
xhr = undefined;
}
};
if (options.xhr) {
xhr = new options.xhr();
} else {
xhr = new XMLHttpRequest();
}
try {
xhr.open(options.method, options.url);
} catch (exception) {
return callback(new Error(exception.name || 'Url is invalid'));
}
xhr.withCredentials = ('withCredentials' in options) ?
options.withCredentials : true;
if (options.method === 'GET') {
delete options.headers['Content-Type'];
} else if (options.json) {
options.headers.Accept = 'application/json';
options.headers['Content-Type'] = options.headers['Content-Type'] ||
'application/json';
if (options.body &&
options.processData &&
typeof options.body !== "string") {
options.body = JSON.stringify(options.body);
}
}
if (options.binary) {
xhr.responseType = 'arraybuffer';
}
if (!('body' in options)) {
options.body = null;
}
for (var key in options.headers) {
if (options.headers.hasOwnProperty(key)) {
xhr.setRequestHeader(key, options.headers[key]);
}
}
if (options.timeout > 0) {
timer = setTimeout(timeoutReq, options.timeout);
xhr.onprogress = function () {
clearTimeout(timer);
if (xhr.readyState !== 4) {
timer = setTimeout(timeoutReq, options.timeout);
}
};
if (typeof xhr.upload !== 'undefined') { // does not exist in ie9
xhr.upload.onprogress = xhr.onprogress;
}
}
xhr.onreadystatechange = function () {
if (xhr.readyState !== 4) {
return;
}
var response = {
statusCode: xhr.status
};
if (xhr.status >= 200 && xhr.status < 300) {
var data;
if (options.binary) {
data = createBlob([xhr.response || ''], {
type: xhr.getResponseHeader('Content-Type')
});
} else {
data = xhr.responseText;
}
callback(null, response, data);
} else {
var err = {};
if (timedout) {
err = new Error('ETIMEDOUT');
err.code = 'ETIMEDOUT';
} else if (typeof xhr.response === 'string') {
try {
err = JSON.parse(xhr.response);
} catch (e) {}
}
err.status = xhr.status;
callback(err);
}
cleanUp();
};
if (options.body && (options.body instanceof Blob)) {
readAsArrayBuffer(options.body, function (arrayBuffer) {
xhr.send(arrayBuffer);
});
} else {
xhr.send(options.body);
}
return ret;
}
function testXhr() {
try {
new XMLHttpRequest();
return true;
} catch (err) {
return false;
}
}
var hasXhr = testXhr();
function ajax$1(options, callback) {
if (!false && (hasXhr || options.xhr)) {
return xhRequest(options, callback);
} else {
return fetchRequest(options, callback);
}
}
// the blob already has a type; do nothing
var res$2 = function () {};
function defaultBody() {
return '';
}
function ajaxCore$1(options, callback) {
options = clone(options);
var defaultOptions = {
method : "GET",
headers: {},
json: true,
processData: true,
timeout: 10000,
cache: false
};
options = $inject_Object_assign(defaultOptions, options);
function onSuccess(obj, resp, cb) {
if (!options.binary && options.json && typeof obj === 'string') {
/* istanbul ignore next */
try {
obj = JSON.parse(obj);
} catch (e) {
// Probably a malformed JSON from server
return cb(e);
}
}
if (Array.isArray(obj)) {
obj = obj.map(function (v) {
if (v.error || v.missing) {
return generateErrorFromResponse(v);
} else {
return v;
}
});
}
if (options.binary) {
res$2(obj, resp);
}
cb(null, obj, resp);
}
if (options.json) {
if (!options.binary) {
options.headers.Accept = 'application/json';
}
options.headers['Content-Type'] = options.headers['Content-Type'] ||
'application/json';
}
if (options.binary) {
options.encoding = null;
options.json = false;
}
if (!options.processData) {
options.json = false;
}
return ajax$1(options, function (err, response, body) {
if (err) {
return callback(generateErrorFromResponse(err));
}
var error;
var content_type = response.headers && response.headers['content-type'];
var data = body || defaultBody();
// CouchDB doesn't always return the right content-type for JSON data, so
// we check for ^{ and }$ (ignoring leading/trailing whitespace)
if (!options.binary && (options.json || !options.processData) &&
typeof data !== 'object' &&
(/json/.test(content_type) ||
(/^[\s]*\{/.test(data) && /\}[\s]*$/.test(data)))) {
try {
data = JSON.parse(data.toString());
} catch (e) {}
}
if (response.statusCode >= 200 && response.statusCode < 300) {
onSuccess(data, response, callback);
} else {
error = generateErrorFromResponse(data);
error.status = response.statusCode;
callback(error);
}
});
}
function ajax(opts, callback) {
// cache-buster, specifically designed to work around IE's aggressive caching
// see http://www.dashbay.com/2011/05/internet-explorer-caches-ajax/
// Also Safari caches POSTs, so we need to cache-bust those too.
var ua = (navigator && navigator.userAgent) ?
navigator.userAgent.toLowerCase() : '';
var isSafari = ua.indexOf('safari') !== -1 && ua.indexOf('chrome') === -1;
var isIE = ua.indexOf('msie') !== -1;
var isEdge = ua.indexOf('edge') !== -1;
// it appears the new version of safari also caches GETs,
// see https://github.com/pouchdb/pouchdb/issues/5010
var shouldCacheBust = (isSafari ||
((isIE || isEdge) && opts.method === 'GET'));
var cache = 'cache' in opts ? opts.cache : true;
var isBlobUrl = /^blob:/.test(opts.url); // don't append nonces for blob URLs
if (!isBlobUrl && (shouldCacheBust || !cache)) {
var hasArgs = opts.url.indexOf('?') !== -1;
opts.url += (hasArgs ? '&' : '?') + '_nonce=' + Date.now();
}
return ajaxCore$1(opts, callback);
}
// dead simple promise pool, inspired by https://github.com/timdp/es6-promise-pool
// but much smaller in code size. limits the number of concurrent promises that are executed
function pool(promiseFactories, limit) {
return new PouchPromise(function (resolve, reject) {
var running = 0;
var current = 0;
var done = 0;
var len = promiseFactories.length;
var err;
function runNext() {
running++;
promiseFactories[current++]().then(onSuccess, onError);
}
function doNext() {
if (++done === len) {
/* istanbul ignore if */
if (err) {
reject(err);
} else {
resolve();
}
} else {
runNextBatch();
}
}
function onSuccess() {
running--;
doNext();
}
/* istanbul ignore next */
function onError(thisErr) {
running--;
err = err || thisErr;
doNext();
}
function runNextBatch() {
while (running < limit && current < len) {
runNext();
}
}
runNextBatch();
});
}
var CHANGES_BATCH_SIZE = 25;
var MAX_SIMULTANEOUS_REVS = 50;
var supportsBulkGetMap = {};
function readAttachmentsAsBlobOrBuffer(row) {
var atts = row.doc && row.doc._attachments;
if (!atts) {
return;
}
Object.keys(atts).forEach(function (filename) {
var att = atts[filename];
att.data = b64ToBluffer(att.data, att.content_type);
});
}
function encodeDocId(id) {
if (/^_design/.test(id)) {
return '_design/' + encodeURIComponent(id.slice(8));
}
if (/^_local/.test(id)) {
return '_local/' + encodeURIComponent(id.slice(7));
}
return encodeURIComponent(id);
}
function preprocessAttachments$2(doc) {
if (!doc._attachments || !Object.keys(doc._attachments)) {
return PouchPromise.resolve();
}
return PouchPromise.all(Object.keys(doc._attachments).map(function (key) {
var attachment = doc._attachments[key];
if (attachment.data && typeof attachment.data !== 'string') {
return new PouchPromise(function (resolve) {
blobToBase64(attachment.data, resolve);
}).then(function (b64) {
attachment.data = b64;
});
}
}));
}
function hasUrlPrefix(opts) {
if (!opts.prefix) {
return false;
}
var protocol = parseUri(opts.prefix).protocol;
return protocol === 'http' || protocol === 'https';
}
// Get all the information you possibly can about the URI given by name and
// return it as a suitable object.
function getHost(name, opts) {
// encode db name if opts.prefix is a url (#5574)
if (hasUrlPrefix(opts)) {
var dbName = opts.name.substr(opts.prefix.length);
name = opts.prefix + encodeURIComponent(dbName);
}
// Prase the URI into all its little bits
var uri = parseUri(name);
// Store the user and password as a separate auth object
if (uri.user || uri.password) {
uri.auth = {username: uri.user, password: uri.password};
}
// Split the path part of the URI into parts using '/' as the delimiter
// after removing any leading '/' and any trailing '/'
var parts = uri.path.replace(/(^\/|\/$)/g, '').split('/');
// Store the first part as the database name and remove it from the parts
// array
uri.db = parts.pop();
// Prevent double encoding of URI component
if (uri.db.indexOf('%') === -1) {
uri.db = encodeURIComponent(uri.db);
}
// Restore the path by joining all the remaining parts (all the parts
// except for the database name) with '/'s
uri.path = parts.join('/');
return uri;
}
// Generate a URL with the host data given by opts and the given path
function genDBUrl(opts, path) {
return genUrl(opts, opts.db + '/' + path);
}
// Generate a URL with the host data given by opts and the given path
function genUrl(opts, path) {
// If the host already has a path, then we need to have a path delimiter
// Otherwise, the path delimiter is the empty string
var pathDel = !opts.path ? '' : '/';
// If the host already has a path, then we need to have a path delimiter
// Otherwise, the path delimiter is the empty string
return opts.protocol + '://' + opts.host +
(opts.port ? (':' + opts.port) : '') +
'/' + opts.path + pathDel + path;
}
function paramsToStr(params) {
return '?' + Object.keys(params).map(function (k) {
return k + '=' + encodeURIComponent(params[k]);
}).join('&');
}
// Implements the PouchDB API for dealing with CouchDB instances over HTTP
function HttpPouch(opts, callback) {
// The functions that will be publicly available for HttpPouch
var api = this;
var host = getHost(opts.name, opts);
var dbUrl = genDBUrl(host, '');
opts = clone(opts);
var ajaxOpts = opts.ajax || {};
if (opts.auth || host.auth) {
var nAuth = opts.auth || host.auth;
var str = nAuth.username + ':' + nAuth.password;
var token = thisBtoa(unescape(encodeURIComponent(str)));
ajaxOpts.headers = ajaxOpts.headers || {};
ajaxOpts.headers.Authorization = 'Basic ' + token;
}
// Not strictly necessary, but we do this because numerous tests
// rely on swapping ajax in and out.
api._ajax = ajax;
function ajax$$1(userOpts, options, callback) {
var reqAjax = userOpts.ajax || {};
var reqOpts = $inject_Object_assign(clone(ajaxOpts), reqAjax, options);
var defaultHeaders = clone(ajaxOpts.headers || {});
reqOpts.headers = $inject_Object_assign(defaultHeaders, reqAjax.headers,
options.headers || {});
/* istanbul ignore if */
if (api.constructor.listeners('debug').length) {
api.constructor.emit('debug', ['http', reqOpts.method, reqOpts.url]);
}
return api._ajax(reqOpts, callback);
}
function ajaxPromise(userOpts, opts) {
return new PouchPromise(function (resolve, reject) {
ajax$$1(userOpts, opts, function (err, res) {
/* istanbul ignore if */
if (err) {
return reject(err);
}
resolve(res);
});
});
}
function adapterFun$$1(name, fun) {
return adapterFun(name, getArguments(function (args) {
setup().then(function () {
return fun.apply(this, args);
}).catch(function (e) {
var callback = args.pop();
callback(e);
});
}));
}
var setupPromise;
function setup() {
// TODO: Remove `skipSetup` in favor of `skip_setup` in a future release
if (opts.skipSetup || opts.skip_setup) {
return PouchPromise.resolve();
}
// If there is a setup in process or previous successful setup
// done then we will use that
// If previous setups have been rejected we will try again
if (setupPromise) {
return setupPromise;
}
var checkExists = {method: 'GET', url: dbUrl};
setupPromise = ajaxPromise({}, checkExists).catch(function (err) {
if (err && err.status && err.status === 404) {
// Doesnt exist, create it
explainError(404, 'PouchDB is just detecting if the remote exists.');
return ajaxPromise({}, {method: 'PUT', url: dbUrl});
} else {
return PouchPromise.reject(err);
}
}).catch(function (err) {
// If we try to create a database that already exists, skipped in
// istanbul since its catching a race condition.
/* istanbul ignore if */
if (err && err.status && err.status === 412) {
return true;
}
return PouchPromise.reject(err);
});
setupPromise.catch(function () {
setupPromise = null;
});
return setupPromise;
}
nextTick(function () {
callback(null, api);
});
api._remote = true;
/* istanbul ignore next */
api.type = function () {
return 'http';
};
api.id = adapterFun$$1('id', function (callback) {
ajax$$1({}, {method: 'GET', url: genUrl(host, '')}, function (err, result) {
var uuid$$1 = (result && result.uuid) ?
(result.uuid + host.db) : genDBUrl(host, '');
callback(null, uuid$$1);
});
});
api.request = adapterFun$$1('request', function (options, callback) {
options.url = genDBUrl(host, options.url);
ajax$$1({}, options, callback);
});
// Sends a POST request to the host calling the couchdb _compact function
// version: The version of CouchDB it is running
api.compact = adapterFun$$1('compact', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = clone(opts);
ajax$$1(opts, {
url: genDBUrl(host, '_compact'),
method: 'POST'
}, function () {
function ping() {
api.info(function (err, res) {
// CouchDB may send a "compact_running:true" if it's
// already compacting. PouchDB Server doesn't.
/* istanbul ignore else */
if (res && !res.compact_running) {
callback(null, {ok: true});
} else {
setTimeout(ping, opts.interval || 200);
}
});
}
// Ping the http if it's finished compaction
ping();
});
});
api.bulkGet = adapterFun('bulkGet', function (opts, callback) {
var self = this;
function doBulkGet(cb) {
var params = {};
if (opts.revs) {
params.revs = true;
}
if (opts.attachments) {
/* istanbul ignore next */
params.attachments = true;
}
if (opts.latest) {
params.latest = true;
}
ajax$$1(opts, {
url: genDBUrl(host, '_bulk_get' + paramsToStr(params)),
method: 'POST',
body: { docs: opts.docs}
}, cb);
}
/* istanbul ignore next */
function doBulkGetShim() {
// avoid "url too long error" by splitting up into multiple requests
var batchSize = MAX_SIMULTANEOUS_REVS;
var numBatches = Math.ceil(opts.docs.length / batchSize);
var numDone = 0;
var results = new Array(numBatches);
function onResult(batchNum) {
return function (err, res) {
// err is impossible because shim returns a list of errs in that case
results[batchNum] = res.results;
if (++numDone === numBatches) {
callback(null, {results: flatten(results)});
}
};
}
for (var i = 0; i < numBatches; i++) {
var subOpts = pick(opts, ['revs', 'attachments', 'latest']);
subOpts.ajax = ajaxOpts;
subOpts.docs = opts.docs.slice(i * batchSize,
Math.min(opts.docs.length, (i + 1) * batchSize));
bulkGet(self, subOpts, onResult(i));
}
}
// mark the whole database as either supporting or not supporting _bulk_get
var dbUrl = genUrl(host, '');
var supportsBulkGet = supportsBulkGetMap[dbUrl];
/* istanbul ignore next */
if (typeof supportsBulkGet !== 'boolean') {
// check if this database supports _bulk_get
doBulkGet(function (err, res) {
if (err) {
supportsBulkGetMap[dbUrl] = false;
explainError(
err.status,
'PouchDB is just detecting if the remote ' +
'supports the _bulk_get API.'
);
doBulkGetShim();
} else {
supportsBulkGetMap[dbUrl] = true;
callback(null, res);
}
});
} else if (supportsBulkGet) {
doBulkGet(callback);
} else {
doBulkGetShim();
}
});
// Calls GET on the host, which gets back a JSON string containing
// couchdb: A welcome string
// version: The version of CouchDB it is running
api._info = function (callback) {
setup().then(function () {
ajax$$1({}, {
method: 'GET',
url: genDBUrl(host, '')
}, function (err, res) {
/* istanbul ignore next */
if (err) {
return callback(err);
}
res.host = genDBUrl(host, '');
callback(null, res);
});
}).catch(callback);
};
// Get the document with the given id from the database given by host.
// The id could be solely the _id in the database, or it may be a
// _design/ID or _local/ID path
api.get = adapterFun$$1('get', function (id, opts, callback) {
// If no options were given, set the callback to the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = clone(opts);
// List of parameters to add to the GET request
var params = {};
if (opts.revs) {
params.revs = true;
}
if (opts.revs_info) {
params.revs_info = true;
}
if (opts.latest) {
params.latest = true;
}
if (opts.open_revs) {
if (opts.open_revs !== "all") {
opts.open_revs = JSON.stringify(opts.open_revs);
}
params.open_revs = opts.open_revs;
}
if (opts.rev) {
params.rev = opts.rev;
}
if (opts.conflicts) {
params.conflicts = opts.conflicts;
}
id = encodeDocId(id);
// Set the options for the ajax call
var options = {
method: 'GET',
url: genDBUrl(host, id + paramsToStr(params))
};
function fetchAttachments(doc) {
var atts = doc._attachments;
var filenames = atts && Object.keys(atts);
if (!atts || !filenames.length) {
return;
}
// we fetch these manually in separate XHRs, because
// Sync Gateway would normally send it back as multipart/mixed,
// which we cannot parse. Also, this is more efficient than
// receiving attachments as base64-encoded strings.
function fetch(filename) {
var att = atts[filename];
var path = encodeDocId(doc._id) + '/' + encodeAttachmentId(filename) +
'?rev=' + doc._rev;
return ajaxPromise(opts, {
method: 'GET',
url: genDBUrl(host, path),
binary: true
}).then(function (blob$$1) {
if (opts.binary) {
return blob$$1;
}
return new PouchPromise(function (resolve) {
blobToBase64(blob$$1, resolve);
});
}).then(function (data) {
delete att.stub;
delete att.length;
att.data = data;
});
}
var promiseFactories = filenames.map(function (filename) {
return function () {
return fetch(filename);
};
});
// This limits the number of parallel xhr requests to 5 any time
// to avoid issues with maximum browser request limits
return pool(promiseFactories, 5);
}
function fetchAllAttachments(docOrDocs) {
if (Array.isArray(docOrDocs)) {
return PouchPromise.all(docOrDocs.map(function (doc) {
if (doc.ok) {
return fetchAttachments(doc.ok);
}
}));
}
return fetchAttachments(docOrDocs);
}
ajaxPromise(opts, options).then(function (res) {
return PouchPromise.resolve().then(function () {
if (opts.attachments) {
return fetchAllAttachments(res);
}
}).then(function () {
callback(null, res);
});
}).catch(callback);
});
// Delete the document given by doc from the database given by host.
api.remove = adapterFun$$1('remove',
function (docOrId, optsOrRev, opts, callback) {
var doc;
if (typeof optsOrRev === 'string') {
// id, rev, opts, callback style
doc = {
_id: docOrId,
_rev: optsOrRev
};
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
} else {
// doc, opts, callback style
doc = docOrId;
if (typeof optsOrRev === 'function') {
callback = optsOrRev;
opts = {};
} else {
callback = opts;
opts = optsOrRev;
}
}
var rev = (doc._rev || opts.rev);
// Delete the document
ajax$$1(opts, {
method: 'DELETE',
url: genDBUrl(host, encodeDocId(doc._id)) + '?rev=' + rev
}, callback);
});
function encodeAttachmentId(attachmentId) {
return attachmentId.split("/").map(encodeURIComponent).join("/");
}
// Get the attachment
api.getAttachment =
adapterFun$$1('getAttachment', function (docId, attachmentId, opts,
callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
var params = opts.rev ? ('?rev=' + opts.rev) : '';
var url = genDBUrl(host, encodeDocId(docId)) + '/' +
encodeAttachmentId(attachmentId) + params;
ajax$$1(opts, {
method: 'GET',
url: url,
binary: true
}, callback);
});
// Remove the attachment given by the id and rev
api.removeAttachment =
adapterFun$$1('removeAttachment', function (docId, attachmentId, rev,
callback) {
var url = genDBUrl(host, encodeDocId(docId) + '/' +
encodeAttachmentId(attachmentId)) + '?rev=' + rev;
ajax$$1({}, {
method: 'DELETE',
url: url
}, callback);
});
// Add the attachment given by blob and its contentType property
// to the document with the given id, the revision given by rev, and
// add it to the database given by host.
api.putAttachment =
adapterFun$$1('putAttachment', function (docId, attachmentId, rev, blob$$1,
type, callback) {
if (typeof type === 'function') {
callback = type;
type = blob$$1;
blob$$1 = rev;
rev = null;
}
var id = encodeDocId(docId) + '/' + encodeAttachmentId(attachmentId);
var url = genDBUrl(host, id);
if (rev) {
url += '?rev=' + rev;
}
if (typeof blob$$1 === 'string') {
// input is assumed to be a base64 string
var binary;
try {
binary = thisAtob(blob$$1);
} catch (err) {
return callback(createError(BAD_ARG,
'Attachment is not a valid base64 string'));
}
blob$$1 = binary ? binStringToBluffer(binary, type) : '';
}
var opts = {
headers: {'Content-Type': type},
method: 'PUT',
url: url,
processData: false,
body: blob$$1,
timeout: ajaxOpts.timeout || 60000
};
// Add the attachment
ajax$$1({}, opts, callback);
});
// Update/create multiple documents given by req in the database
// given by host.
api._bulkDocs = function (req, opts, callback) {
// If new_edits=false then it prevents the database from creating
// new revision numbers for the documents. Instead it just uses
// the old ones. This is used in database replication.
req.new_edits = opts.new_edits;
setup().then(function () {
return PouchPromise.all(req.docs.map(preprocessAttachments$2));
}).then(function () {
// Update/create the documents
ajax$$1(opts, {
method: 'POST',
url: genDBUrl(host, '_bulk_docs'),
timeout: opts.timeout,
body: req
}, function (err, results) {
if (err) {
return callback(err);
}
results.forEach(function (result) {
result.ok = true; // smooths out cloudant not adding this
});
callback(null, results);
});
}).catch(callback);
};
// Update/create document
api._put = function (doc, opts, callback) {
setup().then(function () {
return preprocessAttachments$2(doc);
}).then(function () {
// Update/create the document
ajax$$1(opts, {
method: 'PUT',
url: genDBUrl(host, encodeDocId(doc._id)),
body: doc
}, function (err, result) {
if (err) {
return callback(err);
}
callback(null, result);
});
}).catch(callback);
};
// Get a listing of the documents in the database given
// by host and ordered by increasing id.
api.allDocs = adapterFun$$1('allDocs', function (opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
opts = clone(opts);
// List of parameters to add to the GET request
var params = {};
var body;
var method = 'GET';
if (opts.conflicts) {
params.conflicts = true;
}
if (opts.descending) {
params.descending = true;
}
if (opts.include_docs) {
params.include_docs = true;
}
// added in CouchDB 1.6.0
if (opts.attachments) {
params.attachments = true;
}
if (opts.key) {
params.key = JSON.stringify(opts.key);
}
if (opts.start_key) {
opts.startkey = opts.start_key;
}
if (opts.startkey) {
params.startkey = JSON.stringify(opts.startkey);
}
if (opts.end_key) {
opts.endkey = opts.end_key;
}
if (opts.endkey) {
params.endkey = JSON.stringify(opts.endkey);
}
if (typeof opts.inclusive_end !== 'undefined') {
params.inclusive_end = !!opts.inclusive_end;
}
if (typeof opts.limit !== 'undefined') {
params.limit = opts.limit;
}
if (typeof opts.skip !== 'undefined') {
params.skip = opts.skip;
}
var paramStr = paramsToStr(params);
if (typeof opts.keys !== 'undefined') {
method = 'POST';
body = {keys: opts.keys};
}
// Get the document listing
ajaxPromise(opts, {
method: method,
url: genDBUrl(host, '_all_docs' + paramStr),
body: body
}).then(function (res) {
if (opts.include_docs && opts.attachments && opts.binary) {
res.rows.forEach(readAttachmentsAsBlobOrBuffer);
}
callback(null, res);
}).catch(callback);
});
// Get a list of changes made to documents in the database given by host.
// TODO According to the README, there should be two other methods here,
// api.changes.addListener and api.changes.removeListener.
api._changes = function (opts) {
// We internally page the results of a changes request, this means
// if there is a large set of changes to be returned we can start
// processing them quicker instead of waiting on the entire
// set of changes to return and attempting to process them at once
var batchSize = 'batch_size' in opts ? opts.batch_size : CHANGES_BATCH_SIZE;
opts = clone(opts);
opts.timeout = ('timeout' in opts) ? opts.timeout :
('timeout' in ajaxOpts) ? ajaxOpts.timeout :
30 * 1000;
// We give a 5 second buffer for CouchDB changes to respond with
// an ok timeout (if a timeout it set)
var params = opts.timeout ? {timeout: opts.timeout - (5 * 1000)} : {};
var limit = (typeof opts.limit !== 'undefined') ? opts.limit : false;
var returnDocs;
if ('return_docs' in opts) {
returnDocs = opts.return_docs;
} else if ('returnDocs' in opts) {
// TODO: Remove 'returnDocs' in favor of 'return_docs' in a future release
returnDocs = opts.returnDocs;
} else {
returnDocs = true;
}
//
var leftToFetch = limit;
if (opts.style) {
params.style = opts.style;
}
if (opts.include_docs || opts.filter && typeof opts.filter === 'function') {
params.include_docs = true;
}
if (opts.attachments) {
params.attachments = true;
}
if (opts.continuous) {
params.feed = 'longpoll';
}
if (opts.conflicts) {
params.conflicts = true;
}
if (opts.descending) {
params.descending = true;
}
if ('heartbeat' in opts) {
// If the heartbeat value is false, it disables the default heartbeat
if (opts.heartbeat) {
params.heartbeat = opts.heartbeat;
}
} else if (opts.continuous) {
// Default heartbeat to 10 seconds
params.heartbeat = 10000;
}
if (opts.filter && typeof opts.filter === 'string') {
params.filter = opts.filter;
}
if (opts.view && typeof opts.view === 'string') {
params.filter = '_view';
params.view = opts.view;
}
// If opts.query_params exists, pass it through to the changes request.
// These parameters may be used by the filter on the source database.
if (opts.query_params && typeof opts.query_params === 'object') {
for (var param_name in opts.query_params) {
/* istanbul ignore else */
if (opts.query_params.hasOwnProperty(param_name)) {
params[param_name] = opts.query_params[param_name];
}
}
}
var method = 'GET';
var body;
if (opts.doc_ids) {
// set this automagically for the user; it's annoying that couchdb
// requires both a "filter" and a "doc_ids" param.
params.filter = '_doc_ids';
method = 'POST';
body = {doc_ids: opts.doc_ids };
}
/* istanbul ignore next */
else if (opts.selector) {
// set this automagically for the user, similar to above
params.filter = '_selector';
method = 'POST';
body = {selector: opts.selector };
}
var xhr;
var lastFetchedSeq;
// Get all the changes starting wtih the one immediately after the
// sequence number given by since.
var fetch = function (since, callback) {
if (opts.aborted) {
return;
}
params.since = since;
// "since" can be any kind of json object in Coudant/CouchDB 2.x
/* istanbul ignore next */
if (typeof params.since === "object") {
params.since = JSON.stringify(params.since);
}
if (opts.descending) {
if (limit) {
params.limit = leftToFetch;
}
} else {
params.limit = (!limit || leftToFetch > batchSize) ?
batchSize : leftToFetch;
}
// Set the options for the ajax call
var xhrOpts = {
method: method,
url: genDBUrl(host, '_changes' + paramsToStr(params)),
timeout: opts.timeout,
body: body
};
lastFetchedSeq = since;
/* istanbul ignore if */
if (opts.aborted) {
return;
}
// Get the changes
setup().then(function () {
xhr = ajax$$1(opts, xhrOpts, callback);
}).catch(callback);
};
// If opts.since exists, get all the changes from the sequence
// number given by opts.since. Otherwise, get all the changes
// from the sequence number 0.
var results = {results: []};
var fetched = function (err, res) {
if (opts.aborted) {
return;
}
var raw_results_length = 0;
// If the result of the ajax call (res) contains changes (res.results)
if (res && res.results) {
raw_results_length = res.results.length;
results.last_seq = res.last_seq;
// For each change
var req = {};
req.query = opts.query_params;
res.results = res.results.filter(function (c) {
leftToFetch--;
var ret = filterChange(opts)(c);
if (ret) {
if (opts.include_docs && opts.attachments && opts.binary) {
readAttachmentsAsBlobOrBuffer(c);
}
if (returnDocs) {
results.results.push(c);
}
opts.onChange(c);
}
return ret;
});
} else if (err) {
// In case of an error, stop listening for changes and call
// opts.complete
opts.aborted = true;
opts.complete(err);
return;
}
// The changes feed may have timed out with no results
// if so reuse last update sequence
if (res && res.last_seq) {
lastFetchedSeq = res.last_seq;
}
var finished = (limit && leftToFetch <= 0) ||
(res && raw_results_length < batchSize) ||
(opts.descending);
if ((opts.continuous && !(limit && leftToFetch <= 0)) || !finished) {
// Queue a call to fetch again with the newest sequence number
nextTick(function () { fetch(lastFetchedSeq, fetched); });
} else {
// We're done, call the callback
opts.complete(null, results);
}
};
fetch(opts.since || 0, fetched);
// Return a method to cancel this method from processing any more
return {
cancel: function () {
opts.aborted = true;
if (xhr) {
xhr.abort();
}
}
};
};
// Given a set of document/revision IDs (given by req), tets the subset of
// those that do NOT correspond to revisions stored in the database.
// See http://wiki.apache.org/couchdb/HttpPostRevsDiff
api.revsDiff = adapterFun$$1('revsDiff', function (req, opts, callback) {
// If no options were given, set the callback to be the second parameter
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
// Get the missing document/revision IDs
ajax$$1(opts, {
method: 'POST',
url: genDBUrl(host, '_revs_diff'),
body: req
}, callback);
});
api._close = function (callback) {
callback();
};
api._destroy = function (options, callback) {
ajax$$1(options, {
url: genDBUrl(host, ''),
method: 'DELETE'
}, function (err, resp) {
if (err && err.status && err.status !== 404) {
return callback(err);
}
callback(null, resp);
});
};
}
// HttpPouch is a valid adapter.
HttpPouch.valid = function () {
return true;
};
var httpPouch = function (PouchDB) {
PouchDB.adapter('http', HttpPouch, false);
PouchDB.adapter('https', HttpPouch, false);
};
function isGenOne(rev) {
return /^1-/.test(rev);
}
function fileHasChanged(localDoc, remoteDoc, filename) {
return !localDoc._attachments ||
!localDoc._attachments[filename] ||
localDoc._attachments[filename].digest !== remoteDoc._attachments[filename].digest;
}
function getDocAttachments(db, doc) {
var filenames = Object.keys(doc._attachments);
return PouchPromise.all(filenames.map(function (filename) {
return db.getAttachment(doc._id, filename, {rev: doc._rev});
}));
}
function getDocAttachmentsFromTargetOrSource(target, src, doc) {
var doCheckForLocalAttachments = isRemote(src) && !isRemote(target);
var filenames = Object.keys(doc._attachments);
if (!doCheckForLocalAttachments) {
return getDocAttachments(src, doc);
}
return target.get(doc._id).then(function (localDoc) {
return PouchPromise.all(filenames.map(function (filename) {
if (fileHasChanged(localDoc, doc, filename)) {
return src.getAttachment(doc._id, filename);
}
return target.getAttachment(localDoc._id, filename);
}));
}).catch(function (error) {
/* istanbul ignore if */
if (error.status !== 404) {
throw error;
}
return getDocAttachments(src, doc);
});
}
function createBulkGetOpts(diffs) {
var requests = [];
Object.keys(diffs).forEach(function (id) {
var missingRevs = diffs[id].missing;
missingRevs.forEach(function (missingRev) {
requests.push({
id: id,
rev: missingRev
});
});
});
return {
docs: requests,
revs: true,
latest: true
};
}
//
// Fetch all the documents from the src as described in the "diffs",
// which is a mapping of docs IDs to revisions. If the state ever
// changes to "cancelled", then the returned promise will be rejected.
// Else it will be resolved with a list of fetched documents.
//
function getDocs(src, target, diffs, state) {
diffs = clone(diffs); // we do not need to modify this
var resultDocs = [],
ok = true;
function getAllDocs() {
var bulkGetOpts = createBulkGetOpts(diffs);
if (!bulkGetOpts.docs.length) { // optimization: skip empty requests
return;
}
return src.bulkGet(bulkGetOpts).then(function (bulkGetResponse) {
/* istanbul ignore if */
if (state.cancelled) {
throw new Error('cancelled');
}
return PouchPromise.all(bulkGetResponse.results.map(function (bulkGetInfo) {
return PouchPromise.all(bulkGetInfo.docs.map(function (doc) {
var remoteDoc = doc.ok;
if (doc.error) {
// when AUTO_COMPACTION is set, docs can be returned which look
// like this: {"missing":"1-7c3ac256b693c462af8442f992b83696"}
ok = false;
}
if (!remoteDoc || !remoteDoc._attachments) {
return remoteDoc;
}
return getDocAttachmentsFromTargetOrSource(target, src, remoteDoc)
.then(function (attachments) {
var filenames = Object.keys(remoteDoc._attachments);
attachments
.forEach(function (attachment, i) {
var att = remoteDoc._attachments[filenames[i]];
delete att.stub;
delete att.length;
att.data = attachment;
});
return remoteDoc;
});
}));
}))
.then(function (results) {
resultDocs = resultDocs.concat(flatten(results).filter(Boolean));
});
});
}
function hasAttachments(doc) {
return doc._attachments && Object.keys(doc._attachments).length > 0;
}
function hasConflicts(doc) {
return doc._conflicts && doc._conflicts.length > 0;
}
function fetchRevisionOneDocs(ids) {
// Optimization: fetch gen-1 docs and attachments in
// a single request using _all_docs
return src.allDocs({
keys: ids,
include_docs: true,
conflicts: true
}).then(function (res) {
if (state.cancelled) {
throw new Error('cancelled');
}
res.rows.forEach(function (row) {
if (row.deleted || !row.doc || !isGenOne(row.value.rev) ||
hasAttachments(row.doc) || hasConflicts(row.doc)) {
// if any of these conditions apply, we need to fetch using get()
return;
}
// strip _conflicts array to appease CSG (#5793)
/* istanbul ignore if */
if (row.doc._conflicts) {
delete row.doc._conflicts;
}
// the doc we got back from allDocs() is sufficient
resultDocs.push(row.doc);
delete diffs[row.id];
});
});
}
function getRevisionOneDocs() {
// filter out the generation 1 docs and get them
// leaving the non-generation one docs to be got otherwise
var ids = Object.keys(diffs).filter(function (id) {
var missing = diffs[id].missing;
return missing.length === 1 && isGenOne(missing[0]);
});
if (ids.length > 0) {
return fetchRevisionOneDocs(ids);
}
}
function returnResult() {
return { ok:ok, docs:resultDocs };
}
return PouchPromise.resolve()
.then(getRevisionOneDocs)
.then(getAllDocs)
.then(returnResult);
}
var CHECKPOINT_VERSION = 1;
var REPLICATOR = "pouchdb";
// This is an arbitrary number to limit the
// amount of replication history we save in the checkpoint.
// If we save too much, the checkpoing docs will become very big,
// if we save fewer, we'll run a greater risk of having to
// read all the changes from 0 when checkpoint PUTs fail
// CouchDB 2.0 has a more involved history pruning,
// but let's go for the simple version for now.
var CHECKPOINT_HISTORY_SIZE = 5;
var LOWEST_SEQ = 0;
function updateCheckpoint(db, id, checkpoint, session, returnValue) {
return db.get(id).catch(function (err) {
if (err.status === 404) {
if (db.adapter === 'http' || db.adapter === 'https') {
explainError(
404, 'PouchDB is just checking if a remote checkpoint exists.'
);
}
return {
session_id: session,
_id: id,
history: [],
replicator: REPLICATOR,
version: CHECKPOINT_VERSION
};
}
throw err;
}).then(function (doc) {
if (returnValue.cancelled) {
return;
}
// if the checkpoint has not changed, do not update
if (doc.last_seq === checkpoint) {
return;
}
// Filter out current entry for this replication
doc.history = (doc.history || []).filter(function (item) {
return item.session_id !== session;
});
// Add the latest checkpoint to history
doc.history.unshift({
last_seq: checkpoint,
session_id: session
});
// Just take the last pieces in history, to
// avoid really big checkpoint docs.
// see comment on history size above
doc.history = doc.history.slice(0, CHECKPOINT_HISTORY_SIZE);
doc.version = CHECKPOINT_VERSION;
doc.replicator = REPLICATOR;
doc.session_id = session;
doc.last_seq = checkpoint;
return db.put(doc).catch(function (err) {
if (err.status === 409) {
// retry; someone is trying to write a checkpoint simultaneously
return updateCheckpoint(db, id, checkpoint, session, returnValue);
}
throw err;
});
});
}
function Checkpointer(src, target, id, returnValue) {
this.src = src;
this.target = target;
this.id = id;
this.returnValue = returnValue;
}
Checkpointer.prototype.writeCheckpoint = function (checkpoint, session) {
var self = this;
return this.updateTarget(checkpoint, session).then(function () {
return self.updateSource(checkpoint, session);
});
};
Checkpointer.prototype.updateTarget = function (checkpoint, session) {
return updateCheckpoint(this.target, this.id, checkpoint,
session, this.returnValue);
};
Checkpointer.prototype.updateSource = function (checkpoint, session) {
var self = this;
if (this.readOnlySource) {
return PouchPromise.resolve(true);
}
return updateCheckpoint(this.src, this.id, checkpoint,
session, this.returnValue)
.catch(function (err) {
if (isForbiddenError(err)) {
self.readOnlySource = true;
return true;
}
throw err;
});
};
var comparisons = {
"undefined": function (targetDoc, sourceDoc) {
// This is the previous comparison function
if (collate(targetDoc.last_seq, sourceDoc.last_seq) === 0) {
return sourceDoc.last_seq;
}
/* istanbul ignore next */
return 0;
},
"1": function (targetDoc, sourceDoc) {
// This is the comparison function ported from CouchDB
return compareReplicationLogs(sourceDoc, targetDoc).last_seq;
}
};
Checkpointer.prototype.getCheckpoint = function () {
var self = this;
return self.target.get(self.id).then(function (targetDoc) {
if (self.readOnlySource) {
return PouchPromise.resolve(targetDoc.last_seq);
}
return self.src.get(self.id).then(function (sourceDoc) {
// Since we can't migrate an old version doc to a new one
// (no session id), we just go with the lowest seq in this case
/* istanbul ignore if */
if (targetDoc.version !== sourceDoc.version) {
return LOWEST_SEQ;
}
var version;
if (targetDoc.version) {
version = targetDoc.version.toString();
} else {
version = "undefined";
}
if (version in comparisons) {
return comparisons[version](targetDoc, sourceDoc);
}
/* istanbul ignore next */
return LOWEST_SEQ;
}, function (err) {
if (err.status === 404 && targetDoc.last_seq) {
return self.src.put({
_id: self.id,
last_seq: LOWEST_SEQ
}).then(function () {
return LOWEST_SEQ;
}, function (err) {
if (isForbiddenError(err)) {
self.readOnlySource = true;
return targetDoc.last_seq;
}
/* istanbul ignore next */
return LOWEST_SEQ;
});
}
throw err;
});
}).catch(function (err) {
if (err.status !== 404) {
throw err;
}
return LOWEST_SEQ;
});
};
// This checkpoint comparison is ported from CouchDBs source
// they come from here:
// https://github.com/apache/couchdb-couch-replicator/blob/master/src/couch_replicator.erl#L863-L906
function compareReplicationLogs(srcDoc, tgtDoc) {
if (srcDoc.session_id === tgtDoc.session_id) {
return {
last_seq: srcDoc.last_seq,
history: srcDoc.history
};
}
return compareReplicationHistory(srcDoc.history, tgtDoc.history);
}
function compareReplicationHistory(sourceHistory, targetHistory) {
// the erlang loop via function arguments is not so easy to repeat in JS
// therefore, doing this as recursion
var S = sourceHistory[0];
var sourceRest = sourceHistory.slice(1);
var T = targetHistory[0];
var targetRest = targetHistory.slice(1);
if (!S || targetHistory.length === 0) {
return {
last_seq: LOWEST_SEQ,
history: []
};
}
var sourceId = S.session_id;
/* istanbul ignore if */
if (hasSessionId(sourceId, targetHistory)) {
return {
last_seq: S.last_seq,
history: sourceHistory
};
}
var targetId = T.session_id;
if (hasSessionId(targetId, sourceRest)) {
return {
last_seq: T.last_seq,
history: targetRest
};
}
return compareReplicationHistory(sourceRest, targetRest);
}
function hasSessionId(sessionId, history) {
var props = history[0];
var rest = history.slice(1);
if (!sessionId || history.length === 0) {
return false;
}
if (sessionId === props.session_id) {
return true;
}
return hasSessionId(sessionId, rest);
}
function isForbiddenError(err) {
return typeof err.status === 'number' && Math.floor(err.status / 100) === 4;
}
var STARTING_BACK_OFF = 0;
function backOff(opts, returnValue, error, callback) {
if (opts.retry === false) {
returnValue.emit('error', error);
returnValue.removeAllListeners();
return;
}
if (typeof opts.back_off_function !== 'function') {
opts.back_off_function = defaultBackOff;
}
returnValue.emit('requestError', error);
if (returnValue.state === 'active' || returnValue.state === 'pending') {
returnValue.emit('paused', error);
returnValue.state = 'stopped';
var backOffSet = function backoffTimeSet() {
opts.current_back_off = STARTING_BACK_OFF;
};
var removeBackOffSetter = function removeBackOffTimeSet() {
returnValue.removeListener('active', backOffSet);
};
returnValue.once('paused', removeBackOffSetter);
returnValue.once('active', backOffSet);
}
opts.current_back_off = opts.current_back_off || STARTING_BACK_OFF;
opts.current_back_off = opts.back_off_function(opts.current_back_off);
setTimeout(callback, opts.current_back_off);
}
function sortObjectPropertiesByKey(queryParams) {
return Object.keys(queryParams).sort(collate).reduce(function (result, key) {
result[key] = queryParams[key];
return result;
}, {});
}
// Generate a unique id particular to this replication.
// Not guaranteed to align perfectly with CouchDB's rep ids.
function generateReplicationId(src, target, opts) {
var docIds = opts.doc_ids ? opts.doc_ids.sort(collate) : '';
var filterFun = opts.filter ? opts.filter.toString() : '';
var queryParams = '';
var filterViewName = '';
var selector = '';
// possibility for checkpoints to be lost here as behaviour of
// JSON.stringify is not stable (see #6226)
/* istanbul ignore if */
if (opts.selector) {
selector = JSON.stringify(opts.selector);
}
if (opts.filter && opts.query_params) {
queryParams = JSON.stringify(sortObjectPropertiesByKey(opts.query_params));
}
if (opts.filter && opts.filter === '_view') {
filterViewName = opts.view.toString();
}
return PouchPromise.all([src.id(), target.id()]).then(function (res) {
var queryData = res[0] + res[1] + filterFun + filterViewName +
queryParams + docIds + selector;
return new PouchPromise(function (resolve) {
binaryMd5(queryData, resolve);
});
}).then(function (md5sum) {
// can't use straight-up md5 alphabet, because
// the char '/' is interpreted as being for attachments,
// and + is also not url-safe
md5sum = md5sum.replace(/\//g, '.').replace(/\+/g, '_');
return '_local/' + md5sum;
});
}
function replicate(src, target, opts, returnValue, result) {
var batches = []; // list of batches to be processed
var currentBatch; // the batch currently being processed
var pendingBatch = {
seq: 0,
changes: [],
docs: []
}; // next batch, not yet ready to be processed
var writingCheckpoint = false; // true while checkpoint is being written
var changesCompleted = false; // true when all changes received
var replicationCompleted = false; // true when replication has completed
var last_seq = 0;
var continuous = opts.continuous || opts.live || false;
var batch_size = opts.batch_size || 100;
var batches_limit = opts.batches_limit || 10;
var changesPending = false; // true while src.changes is running
var doc_ids = opts.doc_ids;
var selector = opts.selector;
var repId;
var checkpointer;
var changedDocs = [];
// Like couchdb, every replication gets a unique session id
var session = uuid();
result = result || {
ok: true,
start_time: new Date(),
docs_read: 0,
docs_written: 0,
doc_write_failures: 0,
errors: []
};
var changesOpts = {};
returnValue.ready(src, target);
function initCheckpointer() {
if (checkpointer) {
return PouchPromise.resolve();
}
return generateReplicationId(src, target, opts).then(function (res) {
repId = res;
checkpointer = new Checkpointer(src, target, repId, returnValue);
});
}
function writeDocs() {
changedDocs = [];
if (currentBatch.docs.length === 0) {
return;
}
var docs = currentBatch.docs;
var bulkOpts = {timeout: opts.timeout};
return target.bulkDocs({docs: docs, new_edits: false}, bulkOpts).then(function (res) {
/* istanbul ignore if */
if (returnValue.cancelled) {
completeReplication();
throw new Error('cancelled');
}
// `res` doesn't include full documents (which live in `docs`), so we create a map of
// (id -> error), and check for errors while iterating over `docs`
var errorsById = Object.create(null);
res.forEach(function (res) {
if (res.error) {
errorsById[res.id] = res;
}
});
var errorsNo = Object.keys(errorsById).length;
result.doc_write_failures += errorsNo;
result.docs_written += docs.length - errorsNo;
docs.forEach(function (doc) {
var error = errorsById[doc._id];
if (error) {
result.errors.push(error);
if (error.name === 'unauthorized' || error.name === 'forbidden') {
returnValue.emit('denied', clone(error));
} else {
throw error;
}
} else {
changedDocs.push(doc);
}
});
}, function (err) {
result.doc_write_failures += docs.length;
throw err;
});
}
function finishBatch() {
if (currentBatch.error) {
throw new Error('There was a problem getting docs.');
}
result.last_seq = last_seq = currentBatch.seq;
var outResult = clone(result);
if (changedDocs.length) {
outResult.docs = changedDocs;
returnValue.emit('change', outResult);
}
writingCheckpoint = true;
return checkpointer.writeCheckpoint(currentBatch.seq,
session).then(function () {
writingCheckpoint = false;
/* istanbul ignore if */
if (returnValue.cancelled) {
completeReplication();
throw new Error('cancelled');
}
currentBatch = undefined;
getChanges();
}).catch(function (err) {
onCheckpointError(err);
throw err;
});
}
function getDiffs() {
var diff = {};
currentBatch.changes.forEach(function (change) {
// Couchbase Sync Gateway emits these, but we can ignore them
/* istanbul ignore if */
if (change.id === "_user/") {
return;
}
diff[change.id] = change.changes.map(function (x) {
return x.rev;
});
});
return target.revsDiff(diff).then(function (diffs) {
/* istanbul ignore if */
if (returnValue.cancelled) {
completeReplication();
throw new Error('cancelled');
}
// currentBatch.diffs elements are deleted as the documents are written
currentBatch.diffs = diffs;
});
}
function getBatchDocs() {
return getDocs(src, target, currentBatch.diffs, returnValue).then(function (got) {
currentBatch.error = !got.ok;
got.docs.forEach(function (doc) {
delete currentBatch.diffs[doc._id];
result.docs_read++;
currentBatch.docs.push(doc);
});
});
}
function startNextBatch() {
if (returnValue.cancelled || currentBatch) {
return;
}
if (batches.length === 0) {
processPendingBatch(true);
return;
}
currentBatch = batches.shift();
getDiffs()
.then(getBatchDocs)
.then(writeDocs)
.then(finishBatch)
.then(startNextBatch)
.catch(function (err) {
abortReplication('batch processing terminated with error', err);
});
}
function processPendingBatch(immediate) {
if (pendingBatch.changes.length === 0) {
if (batches.length === 0 && !currentBatch) {
if ((continuous && changesOpts.live) || changesCompleted) {
returnValue.state = 'pending';
returnValue.emit('paused');
}
if (changesCompleted) {
completeReplication();
}
}
return;
}
if (
immediate ||
changesCompleted ||
pendingBatch.changes.length >= batch_size
) {
batches.push(pendingBatch);
pendingBatch = {
seq: 0,
changes: [],
docs: []
};
if (returnValue.state === 'pending' || returnValue.state === 'stopped') {
returnValue.state = 'active';
returnValue.emit('active');
}
startNextBatch();
}
}
function abortReplication(reason, err) {
if (replicationCompleted) {
return;
}
if (!err.message) {
err.message = reason;
}
result.ok = false;
result.status = 'aborting';
batches = [];
pendingBatch = {
seq: 0,
changes: [],
docs: []
};
completeReplication(err);
}
function completeReplication(fatalError) {
if (replicationCompleted) {
return;
}
/* istanbul ignore if */
if (returnValue.cancelled) {
result.status = 'cancelled';
if (writingCheckpoint) {
return;
}
}
result.status = result.status || 'complete';
result.end_time = new Date();
result.last_seq = last_seq;
replicationCompleted = true;
if (fatalError) {
// need to extend the error because Firefox considers ".result" read-only
fatalError = createError(fatalError);
fatalError.result = result;
if (fatalError.name === 'unauthorized' || fatalError.name === 'forbidden') {
returnValue.emit('error', fatalError);
returnValue.removeAllListeners();
} else {
backOff(opts, returnValue, fatalError, function () {
replicate(src, target, opts, returnValue);
});
}
} else {
returnValue.emit('complete', result);
returnValue.removeAllListeners();
}
}
function onChange(change) {
/* istanbul ignore if */
if (returnValue.cancelled) {
return completeReplication();
}
var filter = filterChange(opts)(change);
if (!filter) {
return;
}
pendingBatch.seq = change.seq;
pendingBatch.changes.push(change);
processPendingBatch(batches.length === 0 && changesOpts.live);
}
function onChangesComplete(changes) {
changesPending = false;
/* istanbul ignore if */
if (returnValue.cancelled) {
return completeReplication();
}
// if no results were returned then we're done,
// else fetch more
if (changes.results.length > 0) {
changesOpts.since = changes.last_seq;
getChanges();
processPendingBatch(true);
} else {
var complete = function () {
if (continuous) {
changesOpts.live = true;
getChanges();
} else {
changesCompleted = true;
}
processPendingBatch(true);
};
// update the checkpoint so we start from the right seq next time
if (!currentBatch && changes.results.length === 0) {
writingCheckpoint = true;
checkpointer.writeCheckpoint(changes.last_seq,
session).then(function () {
writingCheckpoint = false;
result.last_seq = last_seq = changes.last_seq;
complete();
})
.catch(onCheckpointError);
} else {
complete();
}
}
}
function onChangesError(err) {
changesPending = false;
/* istanbul ignore if */
if (returnValue.cancelled) {
return completeReplication();
}
abortReplication('changes rejected', err);
}
function getChanges() {
if (!(
!changesPending &&
!changesCompleted &&
batches.length < batches_limit
)) {
return;
}
changesPending = true;
function abortChanges() {
changes.cancel();
}
function removeListener() {
returnValue.removeListener('cancel', abortChanges);
}
if (returnValue._changes) { // remove old changes() and listeners
returnValue.removeListener('cancel', returnValue._abortChanges);
returnValue._changes.cancel();
}
returnValue.once('cancel', abortChanges);
var changes = src.changes(changesOpts)
.on('change', onChange);
changes.then(removeListener, removeListener);
changes.then(onChangesComplete)
.catch(onChangesError);
if (opts.retry) {
// save for later so we can cancel if necessary
returnValue._changes = changes;
returnValue._abortChanges = abortChanges;
}
}
function startChanges() {
initCheckpointer().then(function () {
/* istanbul ignore if */
if (returnValue.cancelled) {
completeReplication();
return;
}
return checkpointer.getCheckpoint().then(function (checkpoint) {
last_seq = checkpoint;
changesOpts = {
since: last_seq,
limit: batch_size,
batch_size: batch_size,
style: 'all_docs',
doc_ids: doc_ids,
selector: selector,
return_docs: true // required so we know when we're done
};
if (opts.filter) {
if (typeof opts.filter !== 'string') {
// required for the client-side filter in onChange
changesOpts.include_docs = true;
} else { // ddoc filter
changesOpts.filter = opts.filter;
}
}
if ('heartbeat' in opts) {
changesOpts.heartbeat = opts.heartbeat;
}
if ('timeout' in opts) {
changesOpts.timeout = opts.timeout;
}
if (opts.query_params) {
changesOpts.query_params = opts.query_params;
}
if (opts.view) {
changesOpts.view = opts.view;
}
getChanges();
});
}).catch(function (err) {
abortReplication('getCheckpoint rejected with ', err);
});
}
/* istanbul ignore next */
function onCheckpointError(err) {
writingCheckpoint = false;
abortReplication('writeCheckpoint completed with error', err);
}
/* istanbul ignore if */
if (returnValue.cancelled) { // cancelled immediately
completeReplication();
return;
}
if (!returnValue._addedListeners) {
returnValue.once('cancel', completeReplication);
if (typeof opts.complete === 'function') {
returnValue.once('error', opts.complete);
returnValue.once('complete', function (result) {
opts.complete(null, result);
});
}
returnValue._addedListeners = true;
}
if (typeof opts.since === 'undefined') {
startChanges();
} else {
initCheckpointer().then(function () {
writingCheckpoint = true;
return checkpointer.writeCheckpoint(opts.since, session);
}).then(function () {
writingCheckpoint = false;
/* istanbul ignore if */
if (returnValue.cancelled) {
completeReplication();
return;
}
last_seq = opts.since;
startChanges();
}).catch(onCheckpointError);
}
}
// We create a basic promise so the caller can cancel the replication possibly
// before we have actually started listening to changes etc
inherits(Replication, events.EventEmitter);
function Replication() {
events.EventEmitter.call(this);
this.cancelled = false;
this.state = 'pending';
var self = this;
var promise = new PouchPromise(function (fulfill, reject) {
self.once('complete', fulfill);
self.once('error', reject);
});
self.then = function (resolve, reject) {
return promise.then(resolve, reject);
};
self.catch = function (reject) {
return promise.catch(reject);
};
// As we allow error handling via "error" event as well,
// put a stub in here so that rejecting never throws UnhandledError.
self.catch(function () {});
}
Replication.prototype.cancel = function () {
this.cancelled = true;
this.state = 'cancelled';
this.emit('cancel');
};
Replication.prototype.ready = function (src, target) {
var self = this;
if (self._readyCalled) {
return;
}
self._readyCalled = true;
function onDestroy() {
self.cancel();
}
src.once('destroyed', onDestroy);
target.once('destroyed', onDestroy);
function cleanup() {
src.removeListener('destroyed', onDestroy);
target.removeListener('destroyed', onDestroy);
}
self.once('complete', cleanup);
};
function toPouch(db, opts) {
var PouchConstructor = opts.PouchConstructor;
if (typeof db === 'string') {
return new PouchConstructor(db, opts);
} else {
return db;
}
}
function replicateWrapper(src, target, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof opts === 'undefined') {
opts = {};
}
if (opts.doc_ids && !Array.isArray(opts.doc_ids)) {
throw createError(BAD_REQUEST,
"`doc_ids` filter parameter is not a list.");
}
opts.complete = callback;
opts = clone(opts);
opts.continuous = opts.continuous || opts.live;
opts.retry = ('retry' in opts) ? opts.retry : false;
/*jshint validthis:true */
opts.PouchConstructor = opts.PouchConstructor || this;
var replicateRet = new Replication(opts);
var srcPouch = toPouch(src, opts);
var targetPouch = toPouch(target, opts);
replicate(srcPouch, targetPouch, opts, replicateRet);
return replicateRet;
}
inherits(Sync, events.EventEmitter);
function sync$1(src, target, opts, callback) {
if (typeof opts === 'function') {
callback = opts;
opts = {};
}
if (typeof opts === 'undefined') {
opts = {};
}
opts = clone(opts);
/*jshint validthis:true */
opts.PouchConstructor = opts.PouchConstructor || this;
src = toPouch(src, opts);
target = toPouch(target, opts);
return new Sync(src, target, opts, callback);
}
function Sync(src, target, opts, callback) {
var self = this;
this.canceled = false;
var optsPush = opts.push ? $inject_Object_assign({}, opts, opts.push) : opts;
var optsPull = opts.pull ? $inject_Object_assign({}, opts, opts.pull) : opts;
this.push = replicateWrapper(src, target, optsPush);
this.pull = replicateWrapper(target, src, optsPull);
this.pushPaused = true;
this.pullPaused = true;
function pullChange(change) {
self.emit('change', {
direction: 'pull',
change: change
});
}
function pushChange(change) {
self.emit('change', {
direction: 'push',
change: change
});
}
function pushDenied(doc) {
self.emit('denied', {
direction: 'push',
doc: doc
});
}
function pullDenied(doc) {
self.emit('denied', {
direction: 'pull',
doc: doc
});
}
function pushPaused() {
self.pushPaused = true;
/* istanbul ignore if */
if (self.pullPaused) {
self.emit('paused');
}
}
function pullPaused() {
self.pullPaused = true;
/* istanbul ignore if */
if (self.pushPaused) {
self.emit('paused');
}
}
function pushActive() {
self.pushPaused = false;
/* istanbul ignore if */
if (self.pullPaused) {
self.emit('active', {
direction: 'push'
});
}
}
function pullActive() {
self.pullPaused = false;
/* istanbul ignore if */
if (self.pushPaused) {
self.emit('active', {
direction: 'pull'
});
}
}
var removed = {};
function removeAll(type) { // type is 'push' or 'pull'
return function (event, func) {
var isChange = event === 'change' &&
(func === pullChange || func === pushChange);
var isDenied = event === 'denied' &&
(func === pullDenied || func === pushDenied);
var isPaused = event === 'paused' &&
(func === pullPaused || func === pushPaused);
var isActive = event === 'active' &&
(func === pullActive || func === pushActive);
if (isChange || isDenied || isPaused || isActive) {
if (!(event in removed)) {
removed[event] = {};
}
removed[event][type] = true;
if (Object.keys(removed[event]).length === 2) {
// both push and pull have asked to be removed
self.removeAllListeners(event);
}
}
};
}
if (opts.live) {
this.push.on('complete', self.pull.cancel.bind(self.pull));
this.pull.on('complete', self.push.cancel.bind(self.push));
}
function addOneListener(ee, event, listener) {
if (ee.listeners(event).indexOf(listener) == -1) {
ee.on(event, listener);
}
}
this.on('newListener', function (event) {
if (event === 'change') {
addOneListener(self.pull, 'change', pullChange);
addOneListener(self.push, 'change', pushChange);
} else if (event === 'denied') {
addOneListener(self.pull, 'denied', pullDenied);
addOneListener(self.push, 'denied', pushDenied);
} else if (event === 'active') {
addOneListener(self.pull, 'active', pullActive);
addOneListener(self.push, 'active', pushActive);
} else if (event === 'paused') {
addOneListener(self.pull, 'paused', pullPaused);
addOneListener(self.push, 'paused', pushPaused);
}
});
this.on('removeListener', function (event) {
if (event === 'change') {
self.pull.removeListener('change', pullChange);
self.push.removeListener('change', pushChange);
} else if (event === 'denied') {
self.pull.removeListener('denied', pullDenied);
self.push.removeListener('denied', pushDenied);
} else if (event === 'active') {
self.pull.removeListener('active', pullActive);
self.push.removeListener('active', pushActive);
} else if (event === 'paused') {
self.pull.removeListener('paused', pullPaused);
self.push.removeListener('paused', pushPaused);
}
});
this.pull.on('removeListener', removeAll('pull'));
this.push.on('removeListener', removeAll('push'));
var promise = PouchPromise.all([
this.push,
this.pull
]).then(function (resp) {
var out = {
push: resp[0],
pull: resp[1]
};
self.emit('complete', out);
if (callback) {
callback(null, out);
}
self.removeAllListeners();
return out;
}, function (err) {
self.cancel();
if (callback) {
// if there's a callback, then the callback can receive
// the error event
callback(err);
} else {
// if there's no callback, then we're safe to emit an error
// event, which would otherwise throw an unhandled error
// due to 'error' being a special event in EventEmitters
self.emit('error', err);
}
self.removeAllListeners();
if (callback) {
// no sense throwing if we're already emitting an 'error' event
throw err;
}
});
this.then = function (success, err) {
return promise.then(success, err);
};
this.catch = function (err) {
return promise.catch(err);
};
}
Sync.prototype.cancel = function () {
if (!this.canceled) {
this.canceled = true;
this.push.cancel();
this.pull.cancel();
}
};
function replication(PouchDB) {
PouchDB.replicate = replicateWrapper;
PouchDB.sync = sync$1;
Object.defineProperty(PouchDB.prototype, 'replicate', {
get: function () {
var self = this;
return {
from: function (other, opts, callback) {
return self.constructor.replicate(other, self, opts, callback);
},
to: function (other, opts, callback) {
return self.constructor.replicate(self, other, opts, callback);
}
};
}
});
PouchDB.prototype.sync = function (dbName, opts, callback) {
return this.constructor.sync(this, dbName, opts, callback);
};
}
var next = PouchDB$2
.plugin(idbPouch)
.plugin(httpPouch)
.plugin(replication);
module.exports = next;
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