Initial commit

4 years ago · 28600f6dbd
parent 8bb0af2542
commit 28600f6dbd
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--- a/.gitignore
+++ b/.gitignore
@ -76,3 +76,5 @@ typings/
 # FuseBox cache
 .fusebox/

+# JetBrains
+.idea
--- a/README.md
+++ b/README.md
@ -1,2 +1,158 @@
 # deepl-scraper

+Scrape data from DeepL translator without applying for the paid authenticated API, using Puppeteer, Chrome browser's headless API.
+
+## Getting started
+
+### Prerequisites
+
+- NodeJS
+- NPM
+- Yarn
+
+### Install
+
+From [npm](https://www.npmjs.com/package/deepl-scraper)
+
+`yarn add deepl-scraper`
+
+or
+
+`npm i deepl-scraper`
+
+### Use
+
+```js
+const translate = require('deepl-scraper').translate;
+
+translate(sentence, source, target, quit).then(console.log).catch(console.error);
+```
+
+#### Parameters
+
+- `sentence` *string* - Word/sentence to be translated
+- `source` *string* (optional) - Word/sentence original language
+<br>Default : `auto`
+- `target` *string* - Language for word/sentence to be translated
+- `quit` *boolean* (optional) - Quit the browser emulator after this translation
+<br>Until the browser is active, it will keep the script running
+
+#### Supported languages
+
+The module doesn't store languages and will always support DeepL's languages list without required update.
+
+Language format is 2 letters.
+
+They can be found in DeepL's HTML :
+
+```html
+<div class="lmt__language_select__menu">
+	<button dl-value="auto">Any language (detect)</button>
+	<button dl-value="EN">English</button>
+	<button dl-value="DE">German</button>
+	<button dl-value="FR">French</button>
+	<button dl-value="ES">Spanish</button>
+	<button dl-value="PT">Portuguese</button>
+	<button dl-value="IT">Italian</button>
+	<button dl-value="NL">Dutch</button>
+	<button dl-value="PL">Polish</button>
+	<button dl-value="RU">Russian</button>
+</div>
+```
+
+However, lowercase is supported in the module.
+
+#### Error handling
+
+- `INVALID_SOURCE_LANGUAGE`
+- `TARGET_LANGUAGE_REQUIRED`
+- `INVALID_TARGET_LANGUAGE`
+- `UNSUPPORTED_SOURCE_LANGUAGE`
+- `UNSUPPORTED_TARGET_LANGUAGE`
+
+### Examples
+
+```js
+translate('hello', 'en', 'fr').then(console.log);
+```
+
+```json
+{
+	"source": {
+		"lang": "en",
+		"sentence": "hello"
+	},
+	"target": {
+		"lang": "fr",
+		"sentences": [
+			"bonjour",
+			"bonjour, bonjour",
+			"bonjour, bonjour.",
+			"bonjour, salut"
+		]
+	}
+}
+```
+
+```js
+translate('hello', null, 'fr').then(console.log);
+```
+
+```json
+{
+	"source": {
+		"lang": "en",
+		"confident": false,
+		"sentence": "hello"
+	},
+	"target": {
+		"lang": "fr",
+		"sentences": [
+			"bonjour",
+			"bonjour, bonjour",
+			"bonjour, bonjour.",
+			"bonjour, salut"
+		]
+	}
+}
+```
+
+```js
+translate('hey, what\'s up ?', null, 'fr').then(console.log);
+```
+
+```json
+{
+	"source": {
+		"lang": "en",
+		"confident": true,
+		"sentence": "hey, what's up ?"
+	},
+	"target": {
+		"lang": "fr",
+		"sentences": [
+			"Hé, quoi de neuf ?",
+			"hey, quoi de neuf ?",
+			"Hey, quoi de neuf ?",
+			"hey, quoi de neuf ?"
+		]
+	}
+}
+```
+
+## Known issues
+
+- Verifying if translation is complete by getting the alts list's computed CSS size is kinda dirty but it's the only way I found for now.
+
+## Planned features
+
+- Get word-by-word definitions, quotes and synonyms
+
+## FAQ
+
+**Why using Puppeteer instead of HTTP requests ?**
+<br>Fucking rate limit error always showing up, whatever you do.
+
+## Changelog
+
+* `1.0.0` (2019-05-06) • Initial release
--- a/index.js
+++ b/index.js
@ -0,0 +1,106 @@
+const
+	puppeteer = require('puppeteer');
+
+let browser;
+
+const getBrowser = () => new Promise(resolve => {
+	if(!browser){
+		puppeteer.launch().then(_browser => {
+			browser = _browser;
+			resolve(browser);
+		});
+	}
+	else
+		resolve(browser);
+});
+
+const getNewPage = () => new Promise(resolve => {
+	getBrowser().then(browser => {
+		browser.newPage().then(resolve);
+	});
+});
+
+module.exports = {
+	translate: (sentence, source, target, quit = false) => new Promise((resolve, reject) => {
+		if(!source)
+			source = 'auto';
+		else if(source.length > 2)
+			reject('INVALID_SOURCE_LANGUAGE');
+		else
+			source = source.toUpperCase();
+		if(!target)
+			reject('TARGET_LANGUAGE_REQUIRED');
+		else if(target.length > 2)
+			reject('INVALID_TARGET_LANGUAGE');
+		else
+			target = target.toUpperCase();
+		getNewPage().then(page => {
+			const
+				homepage = 'https://www.deepl.com/translator',
+				sourceLangSelect = '.lmt__language_select--source button',
+				targetLangSelect = '.lmt__language_select--target button',
+				sourceLangMenu = '.lmt__language_select--source .lmt__language_select__menu',
+				targetLangMenu = '.lmt__language_select--target .lmt__language_select__menu',
+				sourceLangButton = `.lmt__language_select--source button[DL-VALUE=${source}]`,
+				targetLangButton = `.lmt__language_select--target button[DL-VALUE=${target}]`,
+				originalSentenceField = '.lmt__source_textarea'/*,
+				targetSentencesContainer = '.lmt__translations_as_text'*/;
+			const loadHomePage = () => new Promise(resolve => page.goto(homepage).then(resolve));
+			const selectSourceLang = () => new Promise(resolve => {
+				page.waitForSelector(sourceLangMenu, { visible: true }).then(() => {
+					page.click(sourceLangButton)
+						.then(() => resolve())
+						.catch(() => reject('UNSUPPORTED_SOURCE_LANGUAGE'));
+				});
+				page.click(sourceLangSelect);
+			});
+			const selectTargetLang = () => new Promise(resolve => {
+				page.waitForSelector(targetLangMenu, { visible: true }).then(() => {
+					page.click(targetLangButton)
+						.then(() => resolve())
+						.catch(() => reject('UNSUPPORTED_TARGET_LANGUAGE'));
+				});
+				page.click(targetLangSelect);
+			});
+			const typeOriginalSentence = () => new Promise(resolve => page.type(originalSentenceField, sentence).then(() => resolve()));
+			loadHomePage().then(() => {
+				selectSourceLang().then(() => {
+					selectTargetLang().then(() => {
+						typeOriginalSentence().then(() => {
+							let res;
+							const wait = setInterval(() => {
+								page.evaluate(() => JSON.parse(JSON.stringify(window.getComputedStyle(document.querySelector('.lmt__translations_as_text')))))
+									.then(styles => {
+										if(styles.height === '0px') return;
+										if(quit)
+											browser.close();
+										clearInterval(wait);
+										resolve(res);
+									});
+							}, 100);
+							page.on('requestfinished', request => {
+								request.response().json().then(_res => {
+									_res = _res['result'];
+									if(!_res) return;
+									res = {
+										source: {
+											lang: _res['source_lang'].toLowerCase(),
+											...(source === 'auto' ? {
+												confident: !!_res['source_lang_is_confident']
+											} : {}),
+											sentence
+										},
+										target: {
+											lang: _res['target_lang'].toLowerCase(),
+											sentences: _res['translations'][0]['beams'].map(item => item['postprocessed_sentence'])
+										}
+									};
+								}).catch(() => {});
+							});
+						});
+					});
+				});
+			});
+		});
+	})
+};
--- a/package.json
+++ b/package.json
@ -0,0 +1,27 @@
+{
+  "name": "deepl-scraper",
+  "version": "1.0.0",
+  "description": "Scrape data from DeepL translator without applying for the paid authenticated API",
+  "keywords": [
+    "deepl",
+    "deepl.com",
+    "translator",
+    "scraper",
+    "api"
+  ],
+  "homepage": "https://git.kaki87.net/KaKi87/deepl-scraper",
+  "license": "WTFPL",
+  "author": {
+    "name": "KaKi87",
+    "email": "tiana.lemesle@live.fr",
+    "url": "kaki87.net"
+  },
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://git.kaki87.net/KaKi87/deepl-scraper.git"
+  },
+  "dependencies": {
+    "puppeteer": "^1.15.0"
+  }
+}
--- a/yarn.lock
+++ b/yarn.lock
@ -0,0 +1,287 @@
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+# yarn lockfile v1
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+  resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
+  integrity sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==
+
+proxy-from-env@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-1.0.0.tgz#33c50398f70ea7eb96d21f7b817630a55791c7ee"
+  integrity sha1-M8UDmPcOp+uW0h97gXYwpVeRx+4=
+
+puppeteer@^1.15.0:
+  version "1.15.0"
+  resolved "https://registry.yarnpkg.com/puppeteer/-/puppeteer-1.15.0.tgz#1680fac13e51f609143149a5b7fa99eec392b34f"
+  integrity sha512-D2y5kwA9SsYkNUmcBzu9WZ4V1SGHiQTmgvDZSx6sRYFsgV25IebL4V6FaHjF6MbwLK9C6f3G3pmck9qmwM8H3w==
+  dependencies:
+    debug "^4.1.0"
+    extract-zip "^1.6.6"
+    https-proxy-agent "^2.2.1"
+    mime "^2.0.3"
+    progress "^2.0.1"
+    proxy-from-env "^1.0.0"
+    rimraf "^2.6.1"
+    ws "^6.1.0"
+
+readable-stream@^2.2.2:
+  version "2.3.6"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
+  integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.3"
+    isarray "~1.0.0"
+    process-nextick-args "~2.0.0"
+    safe-buffer "~5.1.1"
+    string_decoder "~1.1.1"
+    util-deprecate "~1.0.1"
+
+rimraf@^2.6.1:
+  version "2.6.3"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"
+  integrity sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==
+  dependencies:
+    glob "^7.1.3"
+
+safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+string_decoder@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
+  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
+  dependencies:
+    safe-buffer "~5.1.0"
+
+typedarray@^0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
+  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
+
+util-deprecate@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+ws@^6.1.0:
+  version "6.2.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.2.1.tgz#442fdf0a47ed64f59b6a5d8ff130f4748ed524fb"
+  integrity sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==
+  dependencies:
+    async-limiter "~1.0.0"
+
+yauzl@2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.4.1.tgz#9528f442dab1b2284e58b4379bb194e22e0c4005"
+  integrity sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=
+  dependencies:
+    fd-slicer "~1.0.1"