108 lines
2.6 KiB
JavaScript
108 lines
2.6 KiB
JavaScript
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var SLUGS = {
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4509: "hostproofzerofootprintweb20",
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4510: "verdecktekanaele",
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4573: "dezentralegeldschoepfung",
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4602: "micropayment",
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4608: "x2go",
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4612: "unhosted",
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4614: "angriffistdiebesteverteidigung",
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4627: "0zapftisdiejagdaufdenstaatstrojaner",
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4643: "hackawar_teil1"
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};
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var ltx = require('ltx');
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var http = require('http');
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var fs = require('fs');
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var url = require('url');
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var running = 0, queue = [];
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function resolveSizes(urls, cb) {
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if (running > 0) {
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queue.push(function() {
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resolveSizes(urls, cb);
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});
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return;
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}
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running++;
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urls = urls.map(url.parse);
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var cl = http.createClient(urls[0].port || 80, urls[0].hostname);
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var pending = 0, results = [],
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done = function() {
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if (pending < 1) {
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cb(results);
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running--;
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var f = queue.shift();
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f && f();
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}
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};
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urls.forEach(function(u) {
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var req = cl.request('HEAD', u.pathname, { Host: u.host });
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req.end();
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req.on('response', function(res) {
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if (res.statusCode === 200)
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results.push({ url: url.format(u),
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size: res.headers['content-length'] });
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pending--;
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done();
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});
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pending++;
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});
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done();
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}
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function mimeByExt(url) {
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var ext = url.split('.').pop();
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var type = ({ mp4: 'video/mp4',
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avi: 'video/avi',
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webm: 'video/webm',
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ogv: 'video/ogg',
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flv: 'video/x-flv' })[ext];
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return type || 'application/octet-stream';
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}
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var scheduleFile = fs.readFileSync('content/static/datenspuren/2011/fahrplan/schedule.de.xml');
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var schedule = ltx.parse(scheduleFile);
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schedule.getChildren('day').forEach(function(dayEl) {
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dayEl.getChildren('room').forEach(function(roomEl) {
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roomEl.getChildren('event').forEach(function(eventEl) {
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var id = eventEl.attrs.id;
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var title = eventEl.getChildText('title');
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var base = 'http://ftp.c3d2.de/datenspuren/2011/ds11_' + id + '_' + SLUGS[id] + '.';
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var urls = ['avi', 'mp4', 'webm', 'ogv', 'flv'].map(function(fmt) {
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return base + fmt;
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});
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resolveSizes(urls, function(infos) {
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infos = infos.filter(function(i) {
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return i.size !== undefined;
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});
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if (infos.length < 1)
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return;
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var res = new ltx.Element('resource',
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{ title: title,
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size: infos[0].size,
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type: mimeByExt(infos[0].url),
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url: infos[0].url,
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preview: base + 'gif',
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poster: base + 'jpg',
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hide: 'yes' });
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infos.slice(1).forEach(function(info) {
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res.c('alternative', { size: info.size,
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type: mimeByExt(info.url),
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url: info.url });
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});
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console.info(res.toString());
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});
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});
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});
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});
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