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node-loaders.js
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node-loaders.js
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'use strict';
var fs = require('fs');
var path = require('path');
var lib = require('./lib');
var Loader = require('./loader');
var PrecompiledLoader = require('./precompiled-loader.js');
var FileSystemLoader = Loader.extend({
init: function(searchPaths, opts) {
if(typeof opts === 'boolean') {
console.log(
'[nunjucks] Warning: you passed a boolean as the second ' +
'argument to FileSystemLoader, but it now takes an options ' +
'object. See http://mozilla.github.io/nunjucks/api.html#filesystemloader'
);
}
opts = opts || {};
this.pathsToNames = {};
this.noCache = !!opts.noCache;
if(searchPaths) {
searchPaths = lib.isArray(searchPaths) ? searchPaths : [searchPaths];
// For windows, convert to forward slashes
this.searchPaths = searchPaths.map(path.normalize);
}
else {
this.searchPaths = ['.'];
}
if(opts.watch) {
// Watch all the templates in the paths and fire an event when
// they change
var chokidar = require('chokidar');
var paths = this.searchPaths.filter(fs.existsSync);
var watcher = chokidar.watch(paths);
var _this = this;
watcher.on('all', function(event, fullname) {
fullname = path.resolve(fullname);
if(event === 'change' && fullname in _this.pathsToNames) {
_this.emit('update', _this.pathsToNames[fullname]);
}
});
watcher.on('error', function(error) {
console.log('Watcher error: ' + error);
});
}
},
getSource: function(name) {
var fullpath = null;
var paths = this.searchPaths;
for(var i=0; i<paths.length; i++) {
var basePath = path.resolve(paths[i]);
var p = path.resolve(paths[i], name);
// Only allow the current directory and anything
// underneath it to be searched
if(p.indexOf(basePath) === 0 && fs.existsSync(p)) {
fullpath = p;
break;
}
}
if(!fullpath) {
return null;
}
this.pathsToNames[fullpath] = name;
return { src: fs.readFileSync(fullpath, 'utf-8'),
path: fullpath,
noCache: this.noCache };
}
});
module.exports = {
FileSystemLoader: FileSystemLoader,
PrecompiledLoader: PrecompiledLoader
};