episode.ts 5.8 KB

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  1. 'use strict';
  2. import cheerio = require('cheerio');
  3. import fs = require('fs');
  4. import mkdirp = require('mkdirp');
  5. import request = require('./request');
  6. import path = require('path');
  7. import subtitle from './subtitle/index';
  8. import video from './video/index';
  9. import xml2js = require('xml2js');
  10. /**
  11. * Streams the episode to disk.
  12. */
  13. export default function(config: IConfig, address: string, done: (err: Error) => void) {
  14. scrapePage(config, address, (err, page) => {
  15. if (err) return done(err);
  16. scrapePlayer(config, address, page.id, (err, player) => {
  17. if (err) return done(err);
  18. download(config, page, player, done);
  19. });
  20. });
  21. }
  22. /**
  23. * Completes a download and writes the message with an elapsed time.
  24. */
  25. function complete(message: string, begin: number, done: (err: Error) => void) {
  26. var timeInMs = Date.now() - begin;
  27. var seconds = prefix(Math.floor(timeInMs / 1000) % 60, 2);
  28. var minutes = prefix(Math.floor(timeInMs / 1000 / 60) % 60, 2);
  29. var hours = prefix(Math.floor(timeInMs / 1000 / 60 / 60), 2);
  30. console.log(message + ' (' + hours + ':' + minutes + ':' + seconds + ')');
  31. done(null);
  32. }
  33. /**
  34. * Downloads the subtitle and video.
  35. */
  36. function download(config: IConfig, page: IEpisodePage, player: IEpisodePlayer, done: (err: Error) => void) {
  37. var series = config.series || page.series;
  38. var fileName = name(config, page, series);
  39. var filePath = path.join(config.output || process.cwd(), series, fileName);
  40. mkdirp(path.dirname(filePath), (err: Error) => {
  41. if (err) return done(err);
  42. downloadSubtitle(config, player, filePath, err => {
  43. if (err) return done(err);
  44. var now = Date.now();
  45. console.log('Fetching ' + fileName);
  46. downloadVideo(config, page, player, filePath, err => {
  47. if (err) return done(err);
  48. if (config.merge) return complete('Finished ' + fileName, now, done);
  49. var isSubtited = Boolean(player.subtitle);
  50. video.merge(config, isSubtited, player.video.file, filePath, err => {
  51. if (err) return done(err);
  52. complete('Finished ' + fileName, now, done);
  53. });
  54. });
  55. });
  56. });
  57. }
  58. /**
  59. * Saves the subtitles to disk.
  60. */
  61. function downloadSubtitle(config: IConfig, player: IEpisodePlayer, filePath: string, done: (err?: Error) => void) {
  62. var enc = player.subtitle;
  63. if (!enc) return done();
  64. subtitle.decode(enc.id, enc.iv, enc.data, (err, data) => {
  65. if (err) return done(err);
  66. var formats = subtitle.formats;
  67. var format = formats[config.format] ? config.format : 'ass';
  68. formats[format](data, (err: Error, decodedSubtitle: string) => {
  69. if (err) return done(err);
  70. fs.writeFile(filePath + '.' + format, '\ufeff' + decodedSubtitle, done);
  71. });
  72. });
  73. }
  74. /**
  75. * Streams the video to disk.
  76. */
  77. function downloadVideo(config: IConfig,
  78. page: IEpisodePage,
  79. player: IEpisodePlayer,
  80. filePath: string,
  81. done: (err: Error) => void) {
  82. video.stream(
  83. player.video.host,
  84. player.video.file,
  85. page.swf,
  86. filePath, path.extname(player.video.file),
  87. done);
  88. }
  89. /**
  90. * Names the file based on the config, page, series and tag.
  91. */
  92. function name(config: IConfig, page: IEpisodePage, series: string) {
  93. var episode = (page.episode < 10 ? '0' : '') + page.episode;
  94. var volume = (page.volume < 10 ? '0' : '') + page.volume;
  95. var tag = config.tag || 'CrunchyRoll';
  96. return series + ' ' + volume + 'x' + episode + ' [' + tag + ']';
  97. }
  98. /**
  99. * Prefixes a value.
  100. */
  101. function prefix(value: number|string, length: number) {
  102. var valueString = typeof value !== 'string' ? String(value) : value;
  103. while (valueString.length < length) valueString = '0' + valueString;
  104. return valueString;
  105. }
  106. /**
  107. * Requests the page data and scrapes the id, episode, series and swf.
  108. */
  109. function scrapePage(config: IConfig, address: string, done: (err: Error, page?: IEpisodePage) => void) {
  110. var id = parseInt((address.match(/[0-9]+$/) || ['0'])[0], 10);
  111. if (!id) return done(new Error('Invalid address.'));
  112. request.get(config, address, (err, result) => {
  113. if (err) return done(err);
  114. var $ = cheerio.load(result);
  115. var swf = /^([^?]+)/.exec($('link[rel=video_src]').attr('href'));
  116. var regexp = /-\s+(?:Watch\s+)?(.+?)(?:\s+Season\s+([0-9]+))?(?:\s+-)?\s+Episode\s+([0-9]+)/;
  117. var data = regexp.exec($('title').text());
  118. if (!swf || !data) return done(new Error('Invalid page.'));
  119. done(null, {
  120. id: id,
  121. episode: parseInt(data[3], 10),
  122. series: data[1],
  123. swf: swf[1],
  124. volume: parseInt(data[2], 10) || 1
  125. });
  126. });
  127. }
  128. /**
  129. * Requests the player data and scrapes the subtitle and video data.
  130. */
  131. function scrapePlayer(config: IConfig, address: string, id: number, done: (err: Error, player?: IEpisodePlayer) => void) {
  132. var url = address.match(/^(https?:\/\/[^\/]+)/);
  133. if (!url) return done(new Error('Invalid address.'));
  134. request.post(config, {
  135. form: {current_page: address},
  136. url: url[1] + '/xml/?req=RpcApiVideoPlayer_GetStandardConfig&media_id=' + id
  137. }, (err, result) => {
  138. if (err) return done(err);
  139. xml2js.parseString(result, {
  140. explicitArray: false,
  141. explicitRoot: false
  142. }, (err: Error, player: IEpisodePlayerConfig) => {
  143. if (err) return done(err);
  144. try {
  145. var isSubtitled = Boolean(player['default:preload'].subtitle);
  146. var streamMode="RTMP";
  147. if (player['default:preload'].stream_info.host == "")
  148. {
  149. streamMode="HLS";
  150. }
  151. done(null, {
  152. subtitle: isSubtitled ? {
  153. id: parseInt(player['default:preload'].subtitle.$.id, 10),
  154. iv: player['default:preload'].subtitle.iv,
  155. data: player['default:preload'].subtitle.data
  156. } : null,
  157. video: {
  158. mode: streamMode;
  159. file: player['default:preload'].stream_info.file,
  160. host: player['default:preload'].stream_info.host
  161. }
  162. });
  163. } catch (parseError) {
  164. done(parseError);
  165. }
  166. });
  167. });
  168. }