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LuigiTemplate = (function() {
"use strict";
var VERSION = '0.3.0';
// list of built-in filters
var FILTERS = {
hash: function(v, args) {
return 'hash(' + v + ')';
},
uc: function(v) {
return v.toUpperCase();
},
lc: function(v) {
return v.toLowerCase();
},
pluralize: function(v) {
return v + 's';
},
length: function(v) {
return v.length;
},
trim: function(v) {
return (v || '').replace(/^\s+|\s+$/mg, '');
},
h: (function() {
var LUT = {
'"': '"',
"'": ''',
'>': '>',
'<': '<',
'&': '&'
};
return function(v) {
if (v === undefined || v === null)
return '';
return (v || '').replace(/(['"<>&])/g, function(s) {
return LUT[s];
});
};
})()
};
var RES = {
run: /%\{\s*(\w+)((\s*\|\s*\w+\s*(\([\w\s,-]+\))?)*)\}/g,
filter: /(\w+)\s*(\(([\w\s,-]+)\))?/,
trim: /^\s+|\s+$/
};
function init(s, o) {
this.s = s;
this.o = o;
this.filters = (o && 'filters' in o) ? o.filters : {};
};
function safe_trim(s) {
return ((s !== undefined) ? s : '').replace(RES.trim, '');
}
// given a filter string, return a list of filters
function make_filter_list(s) {
var i, l, a, md, r = [], fs = s.split(/\s*\|\s*/);
if (s.length > 0 && fs.length > 0) {
for (i = 1, l = fs.length; i < l; i++) {
if (md = fs[i].match(RES.filter)) {
r.push({
k: md[1],
a: safe_trim(md[3]).split(/\s*,\s*/)
});
} else {
throw new Error("invalid filter string: " + fs[i]);
}
}
}
return r;
}
function get_filter(k, me) {
var r = me.filters[k] || FILTERS[k];
if (!r)
throw new Error("unknown filter: " + k);
return r;
}
function run(o) {
var i, l, f, fs, me = this;
// TODO: add compiled support here
return this.s.replace(RES.run, function(m, k, filters) {
var r = o[k];
// build filter list
fs = make_filter_list(filters);
// iterate over and apply each filter
for (i = 0, l = fs.length; i < l; i++) {
// get/check filter
f = get_filter(fs[i].k, me);
// apply filter
r = f(r, fs[i].a, o, this);
}
// return result
return r;
});
}
function get_inline_template(key) {
// get script element
var e = document.getElementById(key);
if (!e)
throw new Error('unknown inline template key: ' + key);
// return result
return e.innerText || '';
}
// declare constructor
var T = init;
// declare run method
T.prototype.run = run;
// declare cache constructor
T.Cache = function(templates, try_dom) {
this.templates = templates;
this.try_dom = !!try_dom;
this.cache = {};
};
// cache run method
T.Cache.prototype.run = function(key, args) {
if (!(key in this.cache)) {
var s = null;
if (key in this.templates) {
// get template from constructor templates
s = this.templates[key].join('');
} else if (this.try_dom) {
// get source from inline script tag
s = get_inline_template(key);
} else {
throw new Error('unknown key: ' + key);
}
// cache template
this.cache[key] = new T(s);
}
// run template
return this.cache[key].run(args);
};
// declare domcache constructor
T.DOMCache = function() {
this.cache = {};
};
// domcache run method
T.DOMCache.prototype.run = function(key, args) {
if (!(key in this.cache))
this.cache[key] = new T(get_inline_template(key));
// run template
return this.cache[key].run(args);
};
// create DOMCache singleton
T.dom = new T.DOMCache();
// expose filters and version
T.FILTERS = FILTERS;
T.VERSION = VERSION;
// add singleton run
T.run = function(s, o) {
return new T(s).run(o);
}
// expose interface
return T;
}());
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