Extends the URI class to add methods for computing relative and absolute urls.
URI = Class.refactor(URI, {
combine: function(bits, base){
if (!base || bits.scheme != base.scheme || bits.host != base.host || bits.port != base.port)
return this.previous.apply(this, arguments);
var end = bits.file + (bits.query ? '?' + bits.query : '') + (bits.fragment ? '#' + bits.fragment : '');
if (!base.directory) return (bits.directory || (bits.file ? '' : './')) + end;
var baseDir = base.directory.split('/'),
relDir = bits.directory.split('/'),
path = '',
offset;
var i = 0;
for (offset = 0; offset < baseDir.length && offset < relDir.length && baseDir[offset] == relDir[offset]; offset++);
for (i = 0; i < baseDir.length - offset - 1; i++) path += '../';
for (i = offset; i < relDir.length - 1; i++) path += relDir[i] + '/';
return (path || (bits.file ? '' : './')) + end;
},
toAbsolute: function(base){
base = new URI(base);
if (base) base.set('directory', '').set('file', '');
return this.toRelative(base);
},
toRelative: function(base){
return this.get('value', new URI(base));
}
});