Sha256: c5cd9725e64d87bced8d7b3882c7dfadc6f0af3185e39b1b2f49f6a5941816a3
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Size: 1.48 KB
Versions: 19
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Stored size: 1.48 KB
Contents
/** internal
* mixin Caching
*
* An internal mixin whose public methods are exposed on the [[Environment]]
* and [[Index]] classes.
**/
////////////////////////////////////////////////////////////////////////////////
'use strict';
// stdlib
var join = require('path').join;
var crypto = require('crypto');
// internal
var Asset = require('../assets/asset');
////////////////////////////////////////////////////////////////////////////////
function expandKey(self, key) {
key = String(key).replace(self.root, '');
key = crypto.createHash('md5').update(key, 'utf8').digest('hex');
return join('mincer', key);
}
function cacheSet(self, key, hash) {
hash._version = self.digest.digest('hex');
self.cache.set(expandKey(self, key), hash);
}
function cacheGet(self, key) {
var hash = self.cache.get(expandKey(self, key));
if (hash && hash._version === self.digest.digest('hex')) {
return hash;
}
}
module.exports.cacheAsset = function (path, fn) {
var asset, hash;
if (!this.cache) {
return fn();
}
asset = Asset.fromHash(this, cacheGet(this, path));
if (asset && asset.isFresh(this)) {
return asset;
}
asset = fn();
if (asset) {
hash = {};
asset.encodeWith(hash);
// Save the asset to its path
cacheSet(this, path, hash);
// Since path maybe a logical or full pathname, save the
// asset its its full path too
if (path !== asset.pathname) {
cacheSet(this, asset.pathname, hash);
}
return asset;
}
};
Version data entries
19 entries across 19 versions & 1 rubygems