diff --git a/.gitignore b/.gitignore index 531fd5c..a76066d 100644 --- a/.gitignore +++ b/.gitignore @@ -1,2 +1,3 @@ .DS_Store -node_modules/* \ No newline at end of file +node_modules/* +yarn.lock \ No newline at end of file diff --git a/README.md b/README.md index 18e0369..107f33d 100644 --- a/README.md +++ b/README.md @@ -27,15 +27,19 @@ Tesseract.js works with a ` + ``` -Or you can grab copies of `tesseract.js` and `tesseract.worker.js` from the [dist folder](https://github.com/naptha/tesseract.js/tree/master/dist) and include your local copies like this: +Or you can grab copies of `tesseract.js` and `worker.js` from the [dist folder](https://github.com/naptha/tesseract.js/tree/master/dist) and include your local copies like this: ```html - ``` @@ -69,7 +73,7 @@ You can [head to the docs](#docs) for a full treatment of the API. * [TesseractJob](#tesseractjob) + [TesseractJob.progress(callback: function) -> TesseractJob](#tesseractjobprogresscallback-function---tesseractjob) + [TesseractJob.then(callback: function) -> TesseractJob](#tesseractjobthencallback-function---tesseractjob) - + [TesseractJob.error(callback: function) -> TesseractJob](#tesseractjoberrorcallback-function---tesseractjob) + + [TesseractJob.catch(callback: function) -> TesseractJob](#tesseractjoberrorcallback-function---tesseractjob) * [Tesseract Remote File Options](#tesseract-remote-file-options) + [Tesseract.coreUrl](#tesseractcoreurl) + [Tesseract.workerUrl](#tesseractworkerurl) @@ -87,11 +91,11 @@ Figures out what words are in `image`, where the words are in `image`, etc. + include properties that override some subset of the [default tesseract parameters](./tesseract_parameters.md) + include a `lang` property with a value from the [list of lang parameters](./tesseract_lang_list.md) -Returns a [TesseractJob](#tesseractjob) whose `then`, `progress`, and `error` methods can be used to act on the result. +Returns a [TesseractJob](#tesseractjob) whose `then`, `progress`, and `catch` methods can be used to act on the result. ### Simple Example: ```javascript -Tesseract.recognize('#my-image') +Tesseract.recognize(document.querySelector('#my-image')) .then(function(result){ console.log(result) }) @@ -100,7 +104,7 @@ Tesseract.recognize('#my-image') ### More Complicated Example: ```javascript // if we know our image is of spanish words without the letter 'e': -Tesseract.recognize('#my-image', { +Tesseract.recognize(document.querySelector('#my-image'), { lang: 'spa', tessedit_char_blacklist: 'e' }) @@ -113,14 +117,16 @@ Tesseract.recognize('#my-image', { ## Tesseract.detect(image: [ImageLike](#imagelike)) -> [TesseractJob](#tesseractjob) + Figures out what script (e.g. 'Latin', 'Chinese') the words in image are written in. + - `image` is any [ImageLike](#imagelike) object. Returns a [TesseractJob](#tesseractjob) whose `then`, `progress`, and `error` methods can be used to act on the result of the script. ```javascript -Tesseract.detect('#my-image') +Tesseract.detect(document.querySelector('#my-image')) .then(function(result){ console.log(result) }) @@ -128,13 +134,25 @@ Tesseract.detect('#my-image') ## ImageLike -The main Tesseract.js functions take an `image` parameter, which should be something that is 'image-like'. -That means `image` should be -- an `img` element or querySelector that matches an `img` element -- a `video` element or querySelector that matches a `video` element -- a `canvas` element or querySelector that matches a `canvas` element + +The main Tesseract.js functions take an `image` parameter, which should be something that is like an image. What's considered "image-like" differs depending on whether it is being run from the browser or through NodeJS. + + +On a browser, an image can be: +- an `img`, `video`, or `canvas` element - a CanvasRenderingContext2D (returned by `canvas.getContext('2d')`) -- the absolute `url` of an image from the same website that is running your script. Browser security policies don't allow access to the content of images from other websites :( +- a `File` object (from a file `` or drag-drop event) +- a `Blob` object +- a `ImageData` instance (an object containing `width`, `height` and `data` properties) +- a path or URL to an accessible image (the image must either be hosted locally or accessible by CORS) + + + + +In NodeJS, an image can be +- a path to a local image +- a `Buffer` instance containing a `PNG` or `JPEG` image +- a `ImageData` instance (an object containing `width`, `height` and `data` properties) ## TesseractJob @@ -143,19 +161,19 @@ All methods of a given TesseractJob return that TesseractJob to enable chaining. Typical use is: ```javascript -Tesseract.recognize('#my-image') +Tesseract.recognize(document.querySelector('#my-image')) .progress(function(message){console.log(message)}) - .error(function(err){console.error(err)}) + .catch(function(err){console.error(err)}) .then(function(result){console.log(result)}) ``` Which is equivalent to: ```javascript -var job1 = Tesseract.recognize('#my-image'); +var job1 = Tesseract.recognize(document.querySelector('#my-image')); job1.progress(function(message){console.log(message)}); -job1.error(function(err){console.error(err)}); +job1.catch(function(err){console.error(err)}); job1.then(function(result){console.log(result)}) ``` @@ -168,7 +186,7 @@ Sets `callback` as the function that will be called every time the job progresse For example: ```javascript -Tesseract.recognize('#my-image') +Tesseract.recognize(document.querySelector('#my-image')) .progress(function(message){console.log('progress is: 'message)}) ``` @@ -193,7 +211,7 @@ Sets `callback` as the function that will be called if and when the job successf For example: ```javascript -Tesseract.recognize('#my-image') +Tesseract.recognize(document.querySelector('#my-image')) .then(function(result){console.log('result is: 'result)}) ``` @@ -214,7 +232,7 @@ progress is: { } ``` -### TesseractJob.error(callback: function) -> TesseractJob +### TesseractJob.catch(callback: function) -> TesseractJob Sets `callback` as the function that will be called if the job fails. - `callback` is a function with the signature `callback(erros)` where `error` is a json object. diff --git a/dist/tesseract.js b/dist/tesseract.js index 0784bd1..2323311 100644 --- a/dist/tesseract.js +++ b/dist/tesseract.js @@ -1,78 +1,91 @@ (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Tesseract = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o loadImage(im, cb); - return + im.onload = function (e) { + return loadImage(im, cb); + }; + return; } - }else if(image instanceof File){ + } else if (image instanceof File) { // files - var fr = new FileReader() - fr.onload = e => loadImage(fr.result, cb); - fr.readAsDataURL(image) - return - }else if(image instanceof Blob){ - return loadImage(URL.createObjectURL(image), cb) - }else if(image.getContext){ + var fr = new FileReader(); + fr.onload = function (e) { + return loadImage(fr.result, cb); + }; + fr.readAsDataURL(image); + return; + } else if (image instanceof Blob) { + return loadImage(URL.createObjectURL(image), cb); + } else if (image.getContext) { // canvas element - return loadImage(image.getContext('2d'), cb) - }else if(image.tagName == "IMG" || image.tagName == "VIDEO"){ + return loadImage(image.getContext('2d'), cb); + } else if (image.tagName == "IMG" || image.tagName == "VIDEO") { // image element or video element var c = document.createElement('canvas'); - c.width = image.naturalWidth || image.videoWidth; + c.width = image.naturalWidth || image.videoWidth; c.height = image.naturalHeight || image.videoHeight; var ctx = c.getContext('2d'); ctx.drawImage(image, 0, 0); - return loadImage(ctx, cb) - }else if(image.getImageData){ + return loadImage(ctx, cb); + } else if (image.getImageData) { // canvas context var data = image.getImageData(0, 0, image.canvas.width, image.canvas.height); - return loadImage(data, cb) + return loadImage(data, cb); } - cb(image) + cb(image); } },{}],2:[function(require,module,exports){ +"use strict"; + // The result of dump.js is a big JSON tree // which can be easily serialized (for instance // to be sent from a webworker to the main app @@ -80,212 +93,251 @@ function loadImage(image, cb){ // a (circular) DOM-like interface for walking // through the data. -module.exports = function circularize(page){ - page.paragraphs = [] - page.lines = [] - page.words = [] - page.symbols = [] +module.exports = function circularize(page) { + page.paragraphs = []; + page.lines = []; + page.words = []; + page.symbols = []; - page.blocks.forEach(function(block){ + page.blocks.forEach(function (block) { block.page = page; - block.lines = [] - block.words = [] - block.symbols = [] + block.lines = []; + block.words = []; + block.symbols = []; - block.paragraphs.forEach(function(para){ + block.paragraphs.forEach(function (para) { para.block = block; para.page = page; - para.words = [] - para.symbols = [] - - para.lines.forEach(function(line){ + para.words = []; + para.symbols = []; + + para.lines.forEach(function (line) { line.paragraph = para; line.block = block; line.page = page; - line.symbols = [] + line.symbols = []; - line.words.forEach(function(word){ + line.words.forEach(function (word) { word.line = line; word.paragraph = para; word.block = block; word.page = page; - word.symbols.forEach(function(sym){ + word.symbols.forEach(function (sym) { sym.word = word; sym.line = line; sym.paragraph = para; sym.block = block; sym.page = page; - - sym.line.symbols.push(sym) - sym.paragraph.symbols.push(sym) - sym.block.symbols.push(sym) - sym.page.symbols.push(sym) - }) - word.paragraph.words.push(word) - word.block.words.push(word) - word.page.words.push(word) - }) - line.block.lines.push(line) - line.page.lines.push(line) - }) - para.page.paragraphs.push(para) - }) - }) - return page -} + + sym.line.symbols.push(sym); + sym.paragraph.symbols.push(sym); + sym.block.symbols.push(sym); + sym.page.symbols.push(sym); + }); + word.paragraph.words.push(word); + word.block.words.push(word); + word.page.words.push(word); + }); + line.block.lines.push(line); + line.page.lines.push(line); + }); + para.page.paragraphs.push(para); + }); + }); + return page; +}; + },{}],3:[function(require,module,exports){ "use strict"; -var adapter = require('./node/index.js') -var circularize = require('./common/circularize.js') +var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); +function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } -function createWorker(workerOptions){ - return new TesseractWorker(workerOptions) +var adapter = require('./node/index.js'); +var circularize = require('./common/circularize.js'); + +function create(workerOptions) { + return new TesseractWorker(workerOptions); } -class TesseractWorker { - constructor(workerOptions){ +var TesseractWorker = function () { + function TesseractWorker(workerOptions) { + _classCallCheck(this, TesseractWorker); + this.worker = null; this.workerOptions = workerOptions; this._currentJob = null; - this._queue = [] - } - - recognize(image, options){ - return this._delay(job => { - if(typeof options === 'string'){ - options = { lang: options }; - }else{ - options = options || {} - options.lang = options.lang || 'eng'; - } - - job._send('recognize', { image: image, options: options, workerOptions: this.workerOptions }) - }) - } - detect(image, options){ - options = options || {} - return this._delay(job => { - job._send('detect', { image: image, options: options, workerOptions: this.workerOptions }) - }) + this._queue = []; } - terminate(){ - if(this.worker) adapter.terminateWorker(this); - this.worker = null; - } - - _delay(fn){ - if(!this.worker) this.worker = adapter.spawnWorker(this, this.workerOptions); - - var job = new TesseractJob(this); - this._queue.push(e => { - this._queue.shift() - this._currentJob = job; - fn(job) - }) - if(!this._currentJob) this._dequeue(); - return job - } + _createClass(TesseractWorker, [{ + key: 'recognize', + value: function recognize(image, options) { + var _this = this; + + return this._delay(function (job) { + if (typeof options === 'string') { + options = { lang: options }; + } else { + options = options || {}; + options.lang = options.lang || 'eng'; + } - _dequeue(){ - this._currentJob = null; - if(this._queue.length > 0){ - this._queue[0]() + job._send('recognize', { image: image, options: options, workerOptions: _this.workerOptions }); + }); } - } - - _recv(packet){ + }, { + key: 'detect', + value: function detect(image, options) { + var _this2 = this; + + options = options || {}; + return this._delay(function (job) { + job._send('detect', { image: image, options: options, workerOptions: _this2.workerOptions }); + }); + } + }, { + key: 'terminate', + value: function terminate() { + if (this.worker) adapter.terminateWorker(this); + this.worker = null; + } + }, { + key: '_delay', + value: function _delay(fn) { + var _this3 = this; + + if (!this.worker) this.worker = adapter.spawnWorker(this, this.workerOptions); + + var job = new TesseractJob(this); + this._queue.push(function (e) { + _this3._queue.shift(); + _this3._currentJob = job; + fn(job); + }); + if (!this._currentJob) this._dequeue(); + return job; + } + }, { + key: '_dequeue', + value: function _dequeue() { + this._currentJob = null; + if (this._queue.length > 0) { + this._queue[0](); + } + } + }, { + key: '_recv', + value: function _recv(packet) { - if(packet.status === 'resolve' && packet.action === 'recognize'){ - packet.data = circularize(packet.data); - } + if (packet.status === 'resolve' && packet.action === 'recognize') { + packet.data = circularize(packet.data); + } - if(this._currentJob.id === packet.jobId){ - this._currentJob._handle(packet) - }else{ - console.warn('Job ID ' + packet.jobId + ' not known.') + if (this._currentJob.id === packet.jobId) { + this._currentJob._handle(packet); + } else { + console.warn('Job ID ' + packet.jobId + ' not known.'); + } } - } -} + }]); + + return TesseractWorker; +}(); var jobCounter = 0; -class TesseractJob { - constructor(instance){ - this.id = 'Job-' + (++jobCounter) + '-' + Math.random().toString(16).slice(3, 8) +var TesseractJob = function () { + function TesseractJob(instance) { + _classCallCheck(this, TesseractJob); + + this.id = 'Job-' + ++jobCounter + '-' + Math.random().toString(16).slice(3, 8); this._instance = instance; - this._resolve = [] - this._reject = [] - this._progress = [] + this._resolve = []; + this._reject = []; + this._progress = []; } - then(resolve, reject){ - if(this._resolve.push){ - this._resolve.push(resolve) - }else{ - resolve(this._resolve) - } + _createClass(TesseractJob, [{ + key: 'then', + value: function then(resolve, reject) { + if (this._resolve.push) { + this._resolve.push(resolve); + } else { + resolve(this._resolve); + } - if(reject) this.catch(reject); - return this; - } - catch(reject){ - if(this._reject.push){ - this._reject.push(reject) - }else{ - reject(this._reject) + if (reject) this.catch(reject); + return this; } - return this; - } - progress(fn){ - this._progress.push(fn) - return this; - } - _send(action, payload){ - adapter.sendPacket(this._instance, { - jobId: this.id, - action: action, - payload: payload - }) - } - - _handle(packet){ - var data = packet.data; - if(packet.status === 'resolve'){ - if(this._resolve.length === 0) console.debug(data); - this._resolve.forEach(fn => { - var ret = fn(data); - if(ret && typeof ret.then == 'function'){ - console.warn('TesseractJob instances do not chain like ES6 Promises. To convert it into a real promise, use Promise.resolve.') - } - }) - this._resolve = data; - this._instance._dequeue() - }else if(packet.status === 'reject'){ - if(this._reject.length === 0) console.error(data); - this._reject.forEach(fn => fn(data)) - this._reject = data; - this._instance._dequeue() - }else if(packet.status === 'progress'){ - this._progress.forEach(fn => fn(data)) - }else{ - console.warn('Message type unknown', packet.status) + }, { + key: 'catch', + value: function _catch(reject) { + if (this._reject.push) { + this._reject.push(reject); + } else { + reject(this._reject); + } + return this; } - } -} - + }, { + key: 'progress', + value: function progress(fn) { + this._progress.push(fn); + return this; + } + }, { + key: '_send', + value: function _send(action, payload) { + adapter.sendPacket(this._instance, { + jobId: this.id, + action: action, + payload: payload + }); + } + }, { + key: '_handle', + value: function _handle(packet) { + var data = packet.data; + if (packet.status === 'resolve') { + if (this._resolve.length === 0) console.debug(data); + this._resolve.forEach(function (fn) { + var ret = fn(data); + if (ret && typeof ret.then == 'function') { + console.warn('TesseractJob instances do not chain like ES6 Promises. To convert it into a real promise, use Promise.resolve.'); + } + }); + this._resolve = data; + this._instance._dequeue(); + } else if (packet.status === 'reject') { + if (this._reject.length === 0) console.error(data); + this._reject.forEach(function (fn) { + return fn(data); + }); + this._reject = data; + this._instance._dequeue(); + } else if (packet.status === 'progress') { + this._progress.forEach(function (fn) { + return fn(data); + }); + } else { + console.warn('Message type unknown', packet.status); + } + } + }]); -var DefaultTesseract = createWorker(adapter.defaultOptions) -DefaultTesseract.createWorker = createWorker; + return TesseractJob; +}(); -module.exports = DefaultTesseract +var DefaultTesseract = create(adapter.defaultOptions); +DefaultTesseract.create = create; +module.exports = DefaultTesseract; },{"./common/circularize.js":2,"./node/index.js":1}]},{},[3])(3) }); \ No newline at end of file diff --git a/dist/worker.js b/dist/worker.js index 40d3037..72624e0 100644 --- a/dist/worker.js +++ b/dist/worker.js @@ -82,7 +82,7 @@ AbstractChainedBatch.prototype.write = function (options, callback) { module.exports = AbstractChainedBatch }).call(this,require('_process')) -},{"_process":36}],2:[function(require,module,exports){ +},{"_process":37}],2:[function(require,module,exports){ (function (process){ /* Copyright (c) 2013 Rod Vagg, MIT License */ @@ -135,7 +135,7 @@ AbstractIterator.prototype.end = function (callback) { module.exports = AbstractIterator }).call(this,require('_process')) -},{"_process":36}],3:[function(require,module,exports){ +},{"_process":37}],3:[function(require,module,exports){ (function (Buffer,process){ /* Copyright (c) 2013 Rod Vagg, MIT License */ @@ -395,7 +395,7 @@ module.exports.AbstractIterator = AbstractIterator module.exports.AbstractChainedBatch = AbstractChainedBatch }).call(this,{"isBuffer":require("../is-buffer/index.js")},require('_process')) -},{"../is-buffer/index.js":10,"./abstract-chained-batch":1,"./abstract-iterator":2,"_process":36,"xtend":4}],4:[function(require,module,exports){ +},{"../is-buffer/index.js":9,"./abstract-chained-batch":1,"./abstract-iterator":2,"_process":37,"xtend":4}],4:[function(require,module,exports){ module.exports = extend function extend() { @@ -2323,7 +2323,7 @@ function isnan (val) { } }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"base64-js":5,"ieee754":8,"isarray":11}],7:[function(require,module,exports){ +},{"base64-js":5,"ieee754":8,"isarray":10}],7:[function(require,module,exports){ /*global window:false, self:false, define:false, module:false */ /** @@ -3817,31 +3817,6 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { } },{}],9:[function(require,module,exports){ -if (typeof Object.create === 'function') { - // implementation from standard node.js 'util' module - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - ctor.prototype = Object.create(superCtor.prototype, { - constructor: { - value: ctor, - enumerable: false, - writable: true, - configurable: true - } - }); - }; -} else { - // old school shim for old browsers - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - var TempCtor = function () {} - TempCtor.prototype = superCtor.prototype - ctor.prototype = new TempCtor() - ctor.prototype.constructor = ctor - } -} - -},{}],10:[function(require,module,exports){ /*! * Determine if an object is a Buffer * @@ -3864,14 +3839,14 @@ function isSlowBuffer (obj) { return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) } -},{}],11:[function(require,module,exports){ +},{}],10:[function(require,module,exports){ var toString = {}.toString; module.exports = Array.isArray || function (arr) { return toString.call(arr) == '[object Array]'; }; -},{}],12:[function(require,module,exports){ +},{}],11:[function(require,module,exports){ var Buffer = require('buffer').Buffer; module.exports = isBuffer; @@ -3881,7 +3856,7 @@ function isBuffer (o) { || /\[object (.+Array|Array.+)\]/.test(Object.prototype.toString.call(o)); } -},{"buffer":6}],13:[function(require,module,exports){ +},{"buffer":6}],12:[function(require,module,exports){ (function (Buffer){ module.exports = Level @@ -4059,7 +4034,7 @@ var checkKeyValue = Level.prototype._checkKeyValue = function (obj, type) { } }).call(this,require("buffer").Buffer) -},{"./iterator":14,"abstract-leveldown":3,"buffer":6,"idb-wrapper":7,"isbuffer":12,"typedarray-to-buffer":37,"util":39,"xtend":41}],14:[function(require,module,exports){ +},{"./iterator":13,"abstract-leveldown":3,"buffer":6,"idb-wrapper":7,"isbuffer":11,"typedarray-to-buffer":38,"util":41,"xtend":15}],13:[function(require,module,exports){ var util = require('util') var AbstractIterator = require('abstract-leveldown').AbstractIterator var ltgt = require('ltgt') @@ -4133,7 +4108,43 @@ Iterator.prototype._next = function (callback) { this.callback = callback } -},{"abstract-leveldown":3,"ltgt":15,"util":39}],15:[function(require,module,exports){ +},{"abstract-leveldown":3,"ltgt":16,"util":41}],14:[function(require,module,exports){ +module.exports = hasKeys + +function hasKeys(source) { + return source !== null && + (typeof source === "object" || + typeof source === "function") +} + +},{}],15:[function(require,module,exports){ +var Keys = require("object-keys") +var hasKeys = require("./has-keys") + +module.exports = extend + +function extend() { + var target = {} + + for (var i = 0; i < arguments.length; i++) { + var source = arguments[i] + + if (!hasKeys(source)) { + continue + } + + var keys = Keys(source) + + for (var j = 0; j < keys.length; j++) { + var name = keys[j] + target[name] = source[name] + } + } + + return target +} + +},{"./has-keys":14,"object-keys":18}],16:[function(require,module,exports){ (function (Buffer){ exports.compare = function (a, b) { @@ -4283,7 +4294,7 @@ exports.filter = function (range, compare) { } }).call(this,{"isBuffer":require("../is-buffer/index.js")}) -},{"../is-buffer/index.js":10}],16:[function(require,module,exports){ +},{"../is-buffer/index.js":9}],17:[function(require,module,exports){ var hasOwn = Object.prototype.hasOwnProperty; var toString = Object.prototype.toString; @@ -4325,11 +4336,11 @@ module.exports = function forEach(obj, fn) { }; -},{}],17:[function(require,module,exports){ +},{}],18:[function(require,module,exports){ module.exports = Object.keys || require('./shim'); -},{"./shim":19}],18:[function(require,module,exports){ +},{"./shim":20}],19:[function(require,module,exports){ var toString = Object.prototype.toString; module.exports = function isArguments(value) { @@ -4347,7 +4358,7 @@ module.exports = function isArguments(value) { }; -},{}],19:[function(require,module,exports){ +},{}],20:[function(require,module,exports){ (function () { "use strict"; @@ -4411,7 +4422,7 @@ module.exports = function isArguments(value) { }()); -},{"./foreach":16,"./isArguments":18}],20:[function(require,module,exports){ +},{"./foreach":17,"./isArguments":19}],21:[function(require,module,exports){ // Top level file is just a mixin of submodules & constants 'use strict'; @@ -4427,7 +4438,7 @@ assign(pako, deflate, inflate, constants); module.exports = pako; -},{"./lib/deflate":21,"./lib/inflate":22,"./lib/utils/common":23,"./lib/zlib/constants":26}],21:[function(require,module,exports){ +},{"./lib/deflate":22,"./lib/inflate":23,"./lib/utils/common":24,"./lib/zlib/constants":27}],22:[function(require,module,exports){ 'use strict'; @@ -4829,7 +4840,7 @@ exports.deflate = deflate; exports.deflateRaw = deflateRaw; exports.gzip = gzip; -},{"./utils/common":23,"./utils/strings":24,"./zlib/deflate":28,"./zlib/messages":33,"./zlib/zstream":35}],22:[function(require,module,exports){ +},{"./utils/common":24,"./utils/strings":25,"./zlib/deflate":29,"./zlib/messages":34,"./zlib/zstream":36}],23:[function(require,module,exports){ 'use strict'; @@ -5249,7 +5260,7 @@ exports.inflate = inflate; exports.inflateRaw = inflateRaw; exports.ungzip = inflate; -},{"./utils/common":23,"./utils/strings":24,"./zlib/constants":26,"./zlib/gzheader":29,"./zlib/inflate":31,"./zlib/messages":33,"./zlib/zstream":35}],23:[function(require,module,exports){ +},{"./utils/common":24,"./utils/strings":25,"./zlib/constants":27,"./zlib/gzheader":30,"./zlib/inflate":32,"./zlib/messages":34,"./zlib/zstream":36}],24:[function(require,module,exports){ 'use strict'; @@ -5353,7 +5364,7 @@ exports.setTyped = function (on) { exports.setTyped(TYPED_OK); -},{}],24:[function(require,module,exports){ +},{}],25:[function(require,module,exports){ // String encode/decode helpers 'use strict'; @@ -5540,7 +5551,7 @@ exports.utf8border = function (buf, max) { return (pos + _utf8len[buf[pos]] > max) ? pos : max; }; -},{"./common":23}],25:[function(require,module,exports){ +},{"./common":24}],26:[function(require,module,exports){ 'use strict'; // Note: adler32 takes 12% for level 0 and 2% for level 6. @@ -5574,7 +5585,7 @@ function adler32(adler, buf, len, pos) { module.exports = adler32; -},{}],26:[function(require,module,exports){ +},{}],27:[function(require,module,exports){ 'use strict'; @@ -5626,7 +5637,7 @@ module.exports = { //Z_NULL: null // Use -1 or null inline, depending on var type }; -},{}],27:[function(require,module,exports){ +},{}],28:[function(require,module,exports){ 'use strict'; // Note: we can't get significant speed boost here. @@ -5669,7 +5680,7 @@ function crc32(crc, buf, len, pos) { module.exports = crc32; -},{}],28:[function(require,module,exports){ +},{}],29:[function(require,module,exports){ 'use strict'; var utils = require('../utils/common'); @@ -7526,7 +7537,7 @@ exports.deflatePrime = deflatePrime; exports.deflateTune = deflateTune; */ -},{"../utils/common":23,"./adler32":25,"./crc32":27,"./messages":33,"./trees":34}],29:[function(require,module,exports){ +},{"../utils/common":24,"./adler32":26,"./crc32":28,"./messages":34,"./trees":35}],30:[function(require,module,exports){ 'use strict'; @@ -7568,7 +7579,7 @@ function GZheader() { module.exports = GZheader; -},{}],30:[function(require,module,exports){ +},{}],31:[function(require,module,exports){ 'use strict'; // See state defs from inflate.js @@ -7896,7 +7907,7 @@ module.exports = function inflate_fast(strm, start) { return; }; -},{}],31:[function(require,module,exports){ +},{}],32:[function(require,module,exports){ 'use strict'; @@ -9436,7 +9447,7 @@ exports.inflateSyncPoint = inflateSyncPoint; exports.inflateUndermine = inflateUndermine; */ -},{"../utils/common":23,"./adler32":25,"./crc32":27,"./inffast":30,"./inftrees":32}],32:[function(require,module,exports){ +},{"../utils/common":24,"./adler32":26,"./crc32":28,"./inffast":31,"./inftrees":33}],33:[function(require,module,exports){ 'use strict'; @@ -9765,7 +9776,7 @@ module.exports = function inflate_table(type, lens, lens_index, codes, table, ta return 0; }; -},{"../utils/common":23}],33:[function(require,module,exports){ +},{"../utils/common":24}],34:[function(require,module,exports){ 'use strict'; module.exports = { @@ -9780,7 +9791,7 @@ module.exports = { '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ }; -},{}],34:[function(require,module,exports){ +},{}],35:[function(require,module,exports){ 'use strict'; @@ -10984,7 +10995,7 @@ exports._tr_flush_block = _tr_flush_block; exports._tr_tally = _tr_tally; exports._tr_align = _tr_align; -},{"../utils/common":23}],35:[function(require,module,exports){ +},{"../utils/common":24}],36:[function(require,module,exports){ 'use strict'; @@ -11015,7 +11026,7 @@ function ZStream() { module.exports = ZStream; -},{}],36:[function(require,module,exports){ +},{}],37:[function(require,module,exports){ // shim for using process in browser var process = module.exports = {}; @@ -11197,7 +11208,7 @@ process.chdir = function (dir) { }; process.umask = function() { return 0; }; -},{}],37:[function(require,module,exports){ +},{}],38:[function(require,module,exports){ (function (Buffer){ /** * Convert a typed array to a Buffer without a copy @@ -11220,14 +11231,39 @@ module.exports = function (arr) { } }).call(this,require("buffer").Buffer) -},{"buffer":6}],38:[function(require,module,exports){ +},{"buffer":6}],39:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } +} + +},{}],40:[function(require,module,exports){ module.exports = function isBuffer(arg) { return arg && typeof arg === 'object' && typeof arg.copy === 'function' && typeof arg.fill === 'function' && typeof arg.readUInt8 === 'function'; } -},{}],39:[function(require,module,exports){ +},{}],41:[function(require,module,exports){ (function (process,global){ // Copyright Joyent, Inc. and other Node contributors. // @@ -11817,185 +11853,170 @@ function hasOwnProperty(obj, prop) { } }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./support/isBuffer":38,"_process":36,"inherits":9}],40:[function(require,module,exports){ -module.exports = hasKeys - -function hasKeys(source) { - return source !== null && - (typeof source === "object" || - typeof source === "function") -} - -},{}],41:[function(require,module,exports){ -var Keys = require("object-keys") -var hasKeys = require("./has-keys") - -module.exports = extend - -function extend() { - var target = {} - - for (var i = 0; i < arguments.length; i++) { - var source = arguments[i] - - if (!hasKeys(source)) { - continue - } - - var keys = Keys(source) - - for (var j = 0; j < keys.length; j++) { - var name = keys[j] - target[name] = source[name] - } - } - - return target -} +},{"./support/isBuffer":40,"_process":37,"inherits":39}],42:[function(require,module,exports){ +'use strict'; -},{"./has-keys":40,"object-keys":17}],42:[function(require,module,exports){ -var leveljs = require('level-js') -var db = typeof indexedDB === 'undefined' ? { open: (_, cb) => cb(true) } : leveljs('./tessdata2') +var leveljs = require('level-js'); +var db = typeof indexedDB === 'undefined' ? { open: function open(_, cb) { + return cb(true); + } } : leveljs('./tessdata2'); -var langdata = require('../common/langdata.json') +var langdata = require('../common/langdata.json'); -module.exports = function getLanguageData(req, res, cb){ +module.exports = function getLanguageData(req, res, cb) { var lang = req.options.lang; - - function saveDataFile(data){ - db.put(lang, data, err => console.log('cached', lang, err)) - cb(data) + + function saveDataFile(data) { + db.put(lang, data, function (err) { + return console.log('cached', lang, err); + }); + cb(data); } - db.open({ compression: false }, err => { + db.open({ compression: false }, function (err) { if (err) return fetchLanguageData(req, res, cb); - db.get(lang, (err, data) => { + db.get(lang, function (err, data) { if (err) return fetchLanguageData(req, res, saveDataFile); - res.progress({ status: 'found in cache ' + lang + '.traineddata' }) - cb(data) - }) - }) -} - + res.progress({ status: 'found in cache ' + lang + '.traineddata' }); + cb(data); + }); + }); +}; var ungzip = require('pako').ungzip; -function fetchLanguageData(req, res, cb){ +function fetchLanguageData(req, res, cb) { var lang = req.options.lang; var langfile = lang + '.traineddata.gz'; var url = req.workerOptions.langPath + langfile; var xhr = new XMLHttpRequest(); - xhr.responseType = 'arraybuffer'; xhr.open('GET', url, true); - xhr.onerror = e => { - xhr.onprogress = xhr.onload = null - cb(xhr, null) - } - xhr.onprogress = e => - res.progress({ + xhr.responseType = 'arraybuffer'; + xhr.onerror = function (e) { + xhr.onprogress = xhr.onload = null; + cb(xhr, null); + }; + xhr.onprogress = function (e) { + return res.progress({ status: 'downloading ' + langfile, loaded: e.loaded, progress: Math.min(1, e.loaded / langdata[lang]) }); + }; - xhr.onload = e => { - if (!(xhr.status == 200 || (xhr.status == 0 && xhr.response))) return res.reject('Error downloading language ' + url); - res.progress({ status: 'unzipping ' + langfile }) + xhr.onload = function (e) { + if (!(xhr.status == 200 || xhr.status == 0 && xhr.response)) return res.reject('Error downloading language ' + url); + res.progress({ status: 'unzipping ' + langfile }); // in case the gzips are already ungzipped or extra gzipped - var response = new Uint8Array(xhr.response) + var response = new Uint8Array(xhr.response); try { - while(response[0] == 0x1f && response[1] == 0x8b) response = ungzip(response); + while (response[0] == 0x1f && response[1] == 0x8b) { + response = ungzip(response); + } } catch (err) { - return res.reject('Error unzipping language file ' + langfile + '\n' + err.message) + return res.reject('Error unzipping language file ' + langfile + '\n' + err.message); } - - cb(response) - } - xhr.send() + + cb(response); + }; + xhr.send(); } -},{"../common/langdata.json":46,"level-js":13,"pako":20}],43:[function(require,module,exports){ +},{"../common/langdata.json":46,"level-js":12,"pako":21}],43:[function(require,module,exports){ (function (global){ "use strict"; -var workerUtils = require('../common/worker.js') +var workerUtils = require('../common/worker.js'); -global.addEventListener('message', function(e){ +global.addEventListener('message', function (e) { var packet = e.data; - workerUtils.dispatchHandlers(packet, obj => postMessage(obj)) -}) + workerUtils.dispatchHandlers(packet, function (obj) { + return postMessage(obj); + }); +}); -exports.getCore = function(req, res){ - if(!global.TesseractCore){ - res.progress({ status: 'loading tesseract core' }) - importScripts(req.workerOptions.tesseractPath) - res.progress({ status: 'loaded tesseract core' }) +exports.getCore = function (req, res) { + if (!global.TesseractCore) { + res.progress({ status: 'loading tesseract core' }); + importScripts(req.workerOptions.tesseractPath); + res.progress({ status: 'loaded tesseract core' }); } - return TesseractCore -} + return TesseractCore; +}; -exports.getLanguageData = require('./lang.js') +exports.getLanguageData = require('./lang.js'); workerUtils.setAdapter(module.exports); }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) },{"../common/worker.js":47,"./lang.js":42}],44:[function(require,module,exports){ +'use strict'; + // This converts an image to grayscale -module.exports = function desaturate(image){ +module.exports = function desaturate(image) { var width, height; - if(image.data){ - var src = image.data; - width = image.width, - height = image.height; - var dst = new Uint8Array(width * height); - var srcLength = src.length | 0, srcLength_16 = (srcLength - 16) | 0; - + if (image.data) { + var src = image.data; + width = image.width, height = image.height; + var dst = new Uint8Array(width * height); + var srcLength = src.length | 0, + srcLength_16 = srcLength - 16 | 0; + for (var i = 0, j = 0; i <= srcLength_16; i += 16, j += 4) { // convert to grayscale 4 pixels at a time; eveything with alpha gets put in front of 50% gray - dst[j] = (((src[i] * 77 + src[i+1] * 151 + src[i+2] * 28) * src[i+3]) + ((255-src[i+3]) << 15) + 32768) >> 16 - dst[j+1] = (((src[i+4] * 77 + src[i+5] * 151 + src[i+6] * 28) * src[i+7]) + ((255-src[i+7]) << 15) + 32768) >> 16 - dst[j+2] = (((src[i+8] * 77 + src[i+9] * 151 + src[i+10] * 28) * src[i+11]) + ((255-src[i+11]) << 15) + 32768) >> 16 - dst[j+3] = (((src[i+12] * 77 + src[i+13] * 151 + src[i+14] * 28) * src[i+15]) + ((255-src[i+15]) << 15) + 32768) >> 16 + dst[j] = (src[i] * 77 + src[i + 1] * 151 + src[i + 2] * 28) * src[i + 3] + (255 - src[i + 3] << 15) + 32768 >> 16; + dst[j + 1] = (src[i + 4] * 77 + src[i + 5] * 151 + src[i + 6] * 28) * src[i + 7] + (255 - src[i + 7] << 15) + 32768 >> 16; + dst[j + 2] = (src[i + 8] * 77 + src[i + 9] * 151 + src[i + 10] * 28) * src[i + 11] + (255 - src[i + 11] << 15) + 32768 >> 16; + dst[j + 3] = (src[i + 12] * 77 + src[i + 13] * 151 + src[i + 14] * 28) * src[i + 15] + (255 - src[i + 15] << 15) + 32768 >> 16; } - for (; i < srcLength; i += 4, ++j) //finish up - dst[j] = (((src[i] * 77 + src[i+1] * 151 + src[i+2] * 28) * src[i+3]) + ((255-src[i+3]) << 15) + 32768) >> 16 - image = dst; - } else { throw 'Invalid ImageData' } - return image -} + for (; i < srcLength; i += 4, ++j) { + //finish up + dst[j] = (src[i] * 77 + src[i + 1] * 151 + src[i + 2] * 28) * src[i + 3] + (255 - src[i + 3] << 15) + 32768 >> 16; + }image = dst; + } else { + throw 'Invalid ImageData'; + } + return image; +}; + },{}],45:[function(require,module,exports){ -module.exports = function DumpLiterallyEverything(Module, base){ +'use strict'; + +module.exports = function DumpLiterallyEverything(Module, base) { var ri = base.GetIterator(); var blocks = []; var block, para, textline, word, symbol; - function enumToString(value, prefix){ - return (Object.keys(Module) - .filter(function(e){ return e.substr(0, prefix.length + 1) == prefix + '_' }) - .filter(function(e){ return Module[e] === value }) - .map(function(e){ return e.slice(prefix.length + 1) })[0]) + function enumToString(value, prefix) { + return Object.keys(Module).filter(function (e) { + return e.substr(0, prefix.length + 1) == prefix + '_'; + }).filter(function (e) { + return Module[e] === value; + }).map(function (e) { + return e.slice(prefix.length + 1); + })[0]; } - ri.Begin() + ri.Begin(); do { - if(ri.IsAtBeginningOf(Module.RIL_BLOCK)){ + if (ri.IsAtBeginningOf(Module.RIL_BLOCK)) { var poly = ri.BlockPolygon(); var polygon = null; // BlockPolygon() returns null when automatic page segmentation is off - if(Module.getPointer(poly) > 0){ + if (Module.getPointer(poly) > 0) { var n = poly.get_n(), px = poly.get_x(), py = poly.get_y(), polygon = []; - for(var i = 0; i < n; i++){ + for (var i = 0; i < n; i++) { polygon.push([px.getValue(i), py.getValue(i)]); } - Module._ptaDestroy(Module.getPointer(poly)); + Module._ptaDestroy(Module.getPointer(poly)); } - + block = { paragraphs: [], @@ -12006,10 +12027,10 @@ module.exports = function DumpLiterallyEverything(Module, base){ blocktype: enumToString(ri.BlockType(), 'PT'), polygon: polygon - } - blocks.push(block) + }; + blocks.push(block); } - if(ri.IsAtBeginningOf(Module.RIL_PARA)){ + if (ri.IsAtBeginningOf(Module.RIL_PARA)) { para = { lines: [], @@ -12019,10 +12040,10 @@ module.exports = function DumpLiterallyEverything(Module, base){ bbox: ri.getBoundingBox(Module.RIL_PARA), is_ltr: !!ri.ParagraphIsLtr() - } - block.paragraphs.push(para) + }; + block.paragraphs.push(para); } - if(ri.IsAtBeginningOf(Module.RIL_TEXTLINE)){ + if (ri.IsAtBeginningOf(Module.RIL_TEXTLINE)) { textline = { words: [], @@ -12030,10 +12051,10 @@ module.exports = function DumpLiterallyEverything(Module, base){ confidence: ri.Confidence(Module.RIL_TEXTLINE), baseline: ri.getBaseline(Module.RIL_TEXTLINE), bbox: ri.getBoundingBox(Module.RIL_TEXTLINE) - } - para.lines.push(textline) + }; + para.lines.push(textline); } - if(ri.IsAtBeginningOf(Module.RIL_WORD)){ + if (ri.IsAtBeginningOf(Module.RIL_WORD)) { var fontInfo = ri.getWordFontAttributes(), wordDir = ri.WordDirection(); word = { @@ -12058,25 +12079,25 @@ module.exports = function DumpLiterallyEverything(Module, base){ is_smallcaps: fontInfo.is_smallcaps, font_size: fontInfo.pointsize, font_id: fontInfo.font_id, - font_name: fontInfo.font_name, - } + font_name: fontInfo.font_name + }; var wc = new Module.WordChoiceIterator(ri); do { word.choices.push({ text: wc.GetUTF8Text(), confidence: wc.Confidence() - }) + }); } while (wc.Next()); - Module.destroy(wc) - textline.words.push(word) + Module.destroy(wc); + textline.words.push(word); } - + var image = null; // var pix = ri.GetBinaryImage(Module.RIL_SYMBOL) // var image = pix2array(pix); // // for some reason it seems that things stop working if you destroy pics // Module._pixDestroy(Module.getPointer(pix)); - if(ri.IsAtBeginningOf(Module.RIL_SYMBOL)){ + if (ri.IsAtBeginningOf(Module.RIL_SYMBOL)) { symbol = { choices: [], image: image, @@ -12088,20 +12109,20 @@ module.exports = function DumpLiterallyEverything(Module, base){ is_superscript: !!ri.SymbolIsSuperscript(), is_subscript: !!ri.SymbolIsSubscript(), - is_dropcap: !!ri.SymbolIsDropcap(), - } - word.symbols.push(symbol) + is_dropcap: !!ri.SymbolIsDropcap() + }; + word.symbols.push(symbol); var ci = new Module.ChoiceIterator(ri); do { symbol.choices.push({ text: ci.GetUTF8Text(), confidence: ci.Confidence() - }) + }); } while (ci.Next()); - Module.destroy(ci) + Module.destroy(ci); } } while (ri.Next(Module.RIL_SYMBOL)); - Module.destroy(ri) + Module.destroy(ri); return { text: base.GetUTF8Text(), @@ -12113,120 +12134,116 @@ module.exports = function DumpLiterallyEverything(Module, base){ psm: enumToString(base.GetPageSegMode(), 'PSM'), oem: enumToString(base.oem(), 'OEM'), - version: base.Version(), - } -} + version: base.Version() + }; +}; // the generated HOCR is excessively indented, so // we get rid of that indentation -function deindent(html){ - var lines = html.split('\n') - if(lines[0].substring(0, 2) === " "){ +function deindent(html) { + var lines = html.split('\n'); + if (lines[0].substring(0, 2) === " ") { for (var i = 0; i < lines.length; i++) { - if (lines[i].substring(0,2) === " ") { - lines[i] = lines[i].slice(2) + if (lines[i].substring(0, 2) === " ") { + lines[i] = lines[i].slice(2); } }; } - return lines.join('\n') + return lines.join('\n'); } },{}],46:[function(require,module,exports){ module.exports={"afr": 1079573, "ara": 1701536, "aze": 1420865, "bel": 1276820, "ben": 6772012, "bul": 1605615, "cat": 1652368, "ces": 1035441, "chi_sim": 17710414, "chi_tra": 24717749, "chr": 320649, "dan-frak": 677656, "dan": 1972936, "deu-frak": 822644, "deu": 991656, "ell": 859719, "eng": 9453554, "enm": 619254, "epo": 1241212, "equ": 821130, "est": 1905040, "eus": 1641190, "fin": 979418, "fra": 1376221, "frk": 5912963, "frm": 5147082, "glg": 1674938, "grc": 3012615, "heb": 1051501, "hin": 6590065, "hrv": 1926995, "hun": 3074473, "ind": 1874776, "isl": 1634041, "ita": 948593, "ita_old": 3436571, "jpn": 13507168, "kan": 4390317, "kor": 5353098, "lav": 1843944, "lit": 1779240, "mal": 5966263, "meme": 88453, "mkd": 1163087, "mlt": 1463001, "msa": 1665427, "nld": 1134708, "nor": 2191610, "osd": 4274649, "pol": 7024662, "por": 909359, "ron": 915680, "rus": 5969957, "slk-frak": 289885, "slk": 2217342, "slv": 1611338, "spa": 883170, "spa_old": 5647453, "sqi": 1667041, "srp": 1770244, "swa": 757916, "swe": 2451917, "tam": 3498763, "tel": 5795246, "tgl": 1496256, "tha": 3811136, "tur": 3563264, "ukr": 937566, "vie": 2195922} },{}],47:[function(require,module,exports){ +'use strict'; + var latestJob; var Module; var base; var adapter = {}; -function dispatchHandlers(packet, send){ - function respond(status, data){ +function dispatchHandlers(packet, send) { + function respond(status, data) { send({ jobId: packet.jobId, status: status, action: packet.action, data: data - }) + }); } - respond.resolve = respond.bind(this, 'resolve') - respond.reject = respond.bind(this, 'reject') - respond.progress = respond.bind(this, 'progress') - + respond.resolve = respond.bind(this, 'resolve'); + respond.reject = respond.bind(this, 'reject'); + respond.progress = respond.bind(this, 'progress'); + latestJob = respond; - if(packet.action === 'recognize'){ - handleRecognize(packet.payload, respond) - }else if(packet.action === 'detect'){ - handleDetect(packet.payload, respond) + if (packet.action === 'recognize') { + handleRecognize(packet.payload, respond); + } else if (packet.action === 'detect') { + handleDetect(packet.payload, respond); } } exports.dispatchHandlers = dispatchHandlers; -exports.setAdapter = function setAdapter(impl){ +exports.setAdapter = function setAdapter(impl) { adapter = impl; -} - +}; -function handleInit(req, res){ - if(!Module){ +function handleInit(req, res) { + if (!Module) { var Core = adapter.getCore(req, res); - res.progress({ status: 'initializing tesseract api' }) + res.progress({ status: 'initializing tesseract api' }); Module = Core({ TOTAL_MEMORY: req.memory, - TesseractProgress(percent){ - latestJob.progress({ status: 'recognizing text', progress: Math.max(0, (percent-30)/70) }) + TesseractProgress: function TesseractProgress(percent) { + latestJob.progress({ status: 'recognizing text', progress: Math.max(0, (percent - 30) / 70) }); }, - onRuntimeInitialized() {} - }) - Module.FS_createPath("/", "tessdata", true, true) - base = new Module.TessBaseAPI() - res.progress({ status: 'initialized tesseract api' }) + onRuntimeInitialized: function onRuntimeInitialized() {} + }); + Module.FS_createPath("/", "tessdata", true, true); + base = new Module.TessBaseAPI(); + res.progress({ status: 'initialized tesseract api' }); } } +var dump = require('./dump.js'); +var desaturate = require('./desaturate.js'); - -var dump = require('./dump.js') -var desaturate = require('./desaturate.js') - - -function setImage(Module, base, image){ +function setImage(Module, base, image) { var imgbin = desaturate(image), width = image.width, height = image.height; var ptr = Module.allocate(imgbin, 'i8', Module.ALLOC_NORMAL); base.SetImage(Module.wrapPointer(ptr), width, height, 1, width); - base.SetRectangle(0, 0, width, height) + base.SetRectangle(0, 0, width, height); return ptr; } -function loadLanguage(req, res, cb){ +function loadLanguage(req, res, cb) { var lang = req.options.lang; - - if(!Module._loadedLanguages) Module._loadedLanguages = {}; - if(lang in Module._loadedLanguages) return cb(); - adapter.getLanguageData(req, res, function(data){ + if (!Module._loadedLanguages) Module._loadedLanguages = {}; + if (lang in Module._loadedLanguages) return cb(); + + adapter.getLanguageData(req, res, function (data) { Module.FS_createDataFile('tessdata', lang + ".traineddata", data, true, false); - res.progress({ status: 'loaded ' + lang + '.traineddata' }) + res.progress({ status: 'loaded ' + lang + '.traineddata' }); Module._loadedLanguages[lang] = true; - cb() - }) + cb(); + }); } +function handleRecognize(req, res) { + handleInit(req, res); - -function handleRecognize(req, res){ - handleInit(req, res) - - loadLanguage(req, res, function(){ + loadLanguage(req, res, function () { var lang = req.options.lang; - base.Init(null, lang) - res.progress({ status: 'initialized with language' }) + base.Init(null, lang); + res.progress({ status: 'initialized with language' }); var options = req.options; for (var option in options) { @@ -12236,38 +12253,37 @@ function handleRecognize(req, res){ } var ptr = setImage(Module, base, req.image); - base.Recognize(null) - - var result = dump(Module, base) + base.Recognize(null); + + var result = dump(Module, base); base.End(); - Module._free(ptr); + Module._free(ptr); res.resolve(result); - }) + }); } - -function handleDetect(req, res){ - handleInit(req, res) +function handleDetect(req, res) { + handleInit(req, res); req.options.lang = 'osd'; - loadLanguage(req, res, function(){ + loadLanguage(req, res, function () { + + base.Init(null, 'osd'); + base.SetPageSegMode(Module.PSM_OSD_ONLY); - base.Init(null, 'osd') - base.SetPageSegMode(Module.PSM_OSD_ONLY) - var ptr = setImage(Module, base, req.image); var results = new Module.OSResults(); var success = base.DetectOS(results); - if(!success){ + if (!success) { base.End(); Module._free(ptr); - res.reject("failed to detect os") + res.reject("failed to detect os"); } else { - var charset = results.get_unicharset() - - var best = results.get_best_result() + var charset = results.get_unicharset(); + + var best = results.get_best_result(); var oid = best.get_orientation_id(), sid = best.get_script_id(); @@ -12277,14 +12293,14 @@ function handleDetect(req, res){ script_confidence: best.get_sconfidence(), orientation_degrees: [0, 270, 180, 90][oid], orientation_confidence: best.get_oconfidence() - } + }; base.End(); Module._free(ptr); - res.resolve(result) + res.resolve(result); } - }) + }); } },{"./desaturate.js":44,"./dump.js":45}]},{},[43]); diff --git a/examples/file-input/demo.html b/examples/file-input/demo.html index 265d7fc..08ceb38 100644 --- a/examples/file-input/demo.html +++ b/examples/file-input/demo.html @@ -1,2 +1,2 @@ - + \ No newline at end of file diff --git a/package.json b/package.json index c4fbc87..5f92626 100644 --- a/package.json +++ b/package.json @@ -5,7 +5,7 @@ "main": "src/index.js", "scripts": { "test": "echo \"Error: no test specified\" & exit 1", - "start": "watchify src/index.js -o dist/tesseract.js --standalone Tesseract & watchify src/browser/worker.js -o dist/worker.js & http-server -p 7355", + "start": "watchify src/index.js -t [ babelify --presets [ es2015 ] ] -o dist/tesseract.js --standalone Tesseract & watchify src/browser/worker.js -t [ babelify --presets [ es2015 ] ] -o dist/worker.js & http-server -p 7355", "build": "browserify src/index.js -t [ babelify --presets [ es2015 ] ] -o dist/tesseract.js --standalone Tesseract && browserify src/browser/worker.js -t [ babelify --presets [ es2015 ] ] -o dist/worker.js" }, "browser": { diff --git a/src/browser/index.js b/src/browser/index.js index d49d25f..980b48c 100644 --- a/src/browser/index.js +++ b/src/browser/index.js @@ -1,10 +1,19 @@ -exports.defaultOptions = { - langPath: 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/', - // workerPath: 'dist/worker.js', +var defaultOptions = { workerPath: 'https://cdn.rawgit.com/naptha/tesseract.js/0.1.3/dist/worker.js', tesseractPath: 'https://cdn.rawgit.com/naptha/tesseract.js-core/0.1.0/index.js', + langPath: 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/', +} + +if(location.hostname === '127.0.0.1' && location.port == '7355'){ + console.debug('Using Development Configuration') + defaultOptions.workerPath = location.protocol + '//' + location.host + '/dist/worker.js' } + +exports.defaultOptions = defaultOptions; + + + exports.spawnWorker = function spawnWorker(instance, workerOptions){ if(window.Blob && window.URL){ var blob = new Blob(['importScripts("' + workerOptions.workerPath + '");']) diff --git a/src/index.js b/src/index.js index 9bf2830..b6c3aa0 100644 --- a/src/index.js +++ b/src/index.js @@ -4,7 +4,7 @@ var adapter = require('./node/index.js') var circularize = require('./common/circularize.js') -function createWorker(workerOptions){ +function create(workerOptions){ return new TesseractWorker(workerOptions) } @@ -142,8 +142,8 @@ class TesseractJob { } -var DefaultTesseract = createWorker(adapter.defaultOptions) -DefaultTesseract.createWorker = createWorker; +var DefaultTesseract = create(adapter.defaultOptions) +DefaultTesseract.create = create; module.exports = DefaultTesseract diff --git a/src/node/index.js b/src/node/index.js index a894df9..4ba50e0 100644 --- a/src/node/index.js +++ b/src/node/index.js @@ -29,6 +29,7 @@ exports.sendPacket = function sendPacket(instance, packet){ function loadImage(image, cb){ + // TODO: support URLs if(typeof image === 'string'){ fs.readFile(image, function(err, buffer){ loadImage(buffer, cb)