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appcache.js
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appcache.js
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"use strict";
var sha1 = require('git-sha1');
var pathJoin = require('pathjoin');
var carallel = require('carallel');
var modes = require('js-git/lib/modes');
var bodec = require('bodec');
var mime = "text/cache-manifest";
module.exports = appcache;
function appcache(servePath, req, callback) {
var actions = req.cache.map(function (file) {
return function (callback) {
servePath(pathJoin(req.paths.rule, "..", file), callback);
};
});
carallel(actions, function (err, entries) {
if (err) return callback(err);
var manifest = "CACHE MANIFEST\n";
entries.forEach(function(entry, i) {
if (entry.hash) {
manifest += req.cache[i] + "#" + entry.hash + "\n";
}
else {
manifest += req.cache[i] + "\n";
}
});
if (req.network) {
manifest += "\nNETWORK:\n" + req.network.join("\n") + "\n";
}
if (req.fallback) {
manifest += "\nFALLBACK:\n";
manifest += Object.keys(req.fallback).map(function (key) {
return key + " " + req.fallback[key];
}).join("\n") + "\n";
}
var hash = sha1(manifest);
callback(null, {
mode: modes.file,
hash: hash,
mime: mime,
fetch: fetch
});
function fetch(callback) {
callback(null, bodec.fromUnicode(manifest));
}
});
}