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/*
jQuery strings - 0.4
http://code.google.com/p/jquery-utils/
(c) Maxime Haineault <haineault@gmail.com>
http://haineault.com
MIT License (http://www.opensource.org/licenses/mit-license.php)
Implementation of Python3K advanced string formatting
http://www.python.org/dev/peps/pep-3101/
Documentation: http://code.google.com/p/jquery-utils/wiki/StringFormat
*/
(function($){
var strings = {
strConversion: {
// tries to translate any objects type into string gracefully
__repr: function(i){
switch(this.__getType(i)) {
case 'array':case 'date':case 'number':
return i.toString();
case 'object': // Thanks to Richard Paul Lewis for the fix
var o = [];
var l = i.length;
for(var x=0;x<l;x++) {
o.push(x+': '+this.__repr(i[x]));
}
return o.join(', ');
case 'string':
return i;
default:
return i;
}
},
// like typeof but less vague
__getType: function(i) {
if (!i || !i.constructor) { return typeof(i); }
var match = i.constructor.toString().match(/Array|Number|String|Object|Date/);
return match && match[0].toLowerCase() || typeof(i);
},
// Jonas Raoni Soares Silva (http://jsfromhell.com/string/pad)
__pad: function(str, l, s, t){
var p = s || ' ';
var o = str;
if (l - str.length > 0) {
o = new Array(Math.ceil(l / p.length)).join(p).substr(0, t = !t ? l : t == 1 ? 0 : Math.ceil(l / 2)) + str + p.substr(0, l - t);
}
return o;
},
__getInput: function(arg, args) {
var key = arg.getKey();
switch(this.__getType(args)){
case 'object': // Thanks to Jonathan Works for the patch
var keys = key.split('.');
var obj = args;
for(var subkey = 0; subkey < keys.length; subkey++){
obj = obj[keys[subkey]];
}
if (typeof(obj) != 'undefined') {
if (strings.strConversion.__getType(obj) == 'array') {
return arg.getFormat().match(/\.\*/) && obj[1] || obj;
}
return obj;
}
else {
// TODO: try by numerical index
}
break;
case 'array':
key = parseInt(key, 10);
if (arg.getFormat().match(/\.\*/) && typeof args[key+1] != 'undefined') { return args[key+1]; }
else if (typeof args[key] != 'undefined') { return args[key]; }
else { return key; }
break;
}
return '{'+key+'}';
},
__formatToken: function(token, args) {
var arg = new Argument(token, args);
return strings.strConversion[arg.getFormat().slice(-1)](this.__getInput(arg, args), arg);
},
// Signed integer decimal.
d: function(input, arg){
var o = parseInt(input, 10); // enforce base 10
var p = arg.getPaddingLength();
if (p) { return this.__pad(o.toString(), p, arg.getPaddingString(), 0); }
else { return o; }
},
// Signed integer decimal.
i: function(input, args){
return this.d(input, args);
},
// Unsigned octal
o: function(input, arg){
var o = input.toString(8);
if (arg.isAlternate()) { o = this.__pad(o, o.length+1, '0', 0); }
return this.__pad(o, arg.getPaddingLength(), arg.getPaddingString(), 0);
},
// Unsigned decimal
u: function(input, args) {
return Math.abs(this.d(input, args));
},
// Unsigned hexadecimal (lowercase)
x: function(input, arg){
var o = parseInt(input, 10).toString(16);
o = this.__pad(o, arg.getPaddingLength(), arg.getPaddingString(),0);
return arg.isAlternate() ? '0x'+o : o;
},
// Unsigned hexadecimal (uppercase)
X: function(input, arg){
return this.x(input, arg).toUpperCase();
},
// Floating point exponential format (lowercase)
e: function(input, arg){
return parseFloat(input, 10).toExponential(arg.getPrecision());
},
// Floating point exponential format (uppercase)
E: function(input, arg){
return this.e(input, arg).toUpperCase();
},
// Floating point decimal format
f: function(input, arg){
return this.__pad(parseFloat(input, 10).toFixed(arg.getPrecision()), arg.getPaddingLength(), arg.getPaddingString(),0);
},
// Floating point decimal format (alias)
F: function(input, args){
return this.f(input, args);
},
// Floating point format. Uses exponential format if exponent is greater than -4 or less than precision, decimal format otherwise
g: function(input, arg){
var o = parseFloat(input, 10);
return (o.toString().length > 6) ? Math.round(o.toExponential(arg.getPrecision())): o;
},
// Floating point format. Uses exponential format if exponent is greater than -4 or less than precision, decimal format otherwise
G: function(input, args){
return this.g(input, args);
},
// Single character (accepts integer or single character string).
c: function(input, args) {
var match = input.match(/\w|\d/);
return match && match[0] || '';
},
// String (converts any JavaScript object to anotated format)
r: function(input, args) {
return this.__repr(input);
},
// String (converts any JavaScript object using object.toString())
s: function(input, args) {
return input.toString && input.toString() || ''+input;
}
},
format: function(str, args) {
var end = 0;
var start = 0;
var match = false;
var buffer = [];
var token = '';
var tmp = (str||'').split('');
for(start=0; start < tmp.length; start++) {
if (tmp[start] == '{' && tmp[start+1] !='{') {
end = str.indexOf('}', start);
token = tmp.slice(start+1, end).join('');
if (tmp[start-1] != '{' && tmp[end+1] != '}') {
var tokenArgs = (typeof arguments[1] != 'object')? arguments2Array(arguments, 2): args || [];
buffer.push(strings.strConversion.__formatToken(token, tokenArgs));
}
else {
buffer.push(token);
}
}
else if (start > end || buffer.length < 1) { buffer.push(tmp[start]); }
}
return (buffer.length > 1)? buffer.join(''): buffer[0];
},
calc: function(str, args) {
return eval(format(str, args));
},
repeat: function(s, n) {
return new Array(n+1).join(s);
},
UTF8encode: function(s) {
return unescape(encodeURIComponent(s));
},
UTF8decode: function(s) {
return decodeURIComponent(escape(s));
},
tpl: function() {
var out = '';
var render = true;
// Set
// $.tpl('ui.test', ['<span>', helloWorld ,'</span>']);
if (arguments.length == 2 && $.isArray(arguments[1])) {
this[arguments[0]] = arguments[1].join('');
return $(this[arguments[0]]);
}
// $.tpl('ui.test', '<span>hello world</span>');
if (arguments.length == 2 && $.isString(arguments[1])) {
this[arguments[0]] = arguments[1];
return $(this[arguments[0]]);
}
// Call
// $.tpl('ui.test');
if (arguments.length == 1) {
return $(this[arguments[0]]);
}
// $.tpl('ui.test', false);
if (arguments.length == 2 && arguments[1] == false) {
return this[arguments[0]];
}
// $.tpl('ui.test', {value:blah});
if (arguments.length == 2 && $.isObject(arguments[1])) {
return $($.format(this[arguments[0]], arguments[1]));
}
// $.tpl('ui.test', {value:blah}, false);
if (arguments.length == 3 && $.isObject(arguments[1])) {
return (arguments[2] == true)
? $.format(this[arguments[0]], arguments[1])
: $($.format(this[arguments[0]], arguments[1]));
}
}
};
var Argument = function(arg, args) {
this.__arg = arg;
this.__args = args;
this.__max_precision = parseFloat('1.'+ (new Array(32)).join('1'), 10).toString().length-3;
this.__def_precision = 6;
this.getString = function(){
return this.__arg;
};
this.getKey = function(){
return this.__arg.split(':')[0];
};
this.getFormat = function(){
var match = this.getString().split(':');
return (match && match[1])? match[1]: 's';
};
this.getPrecision = function(){
var match = this.getFormat().match(/\.(\d+|\*)/g);
if (!match) { return this.__def_precision; }
else {
match = match[0].slice(1);
if (match != '*') { return parseInt(match, 10); }
else if(strings.strConversion.__getType(this.__args) == 'array') {
return this.__args[1] && this.__args[0] || this.__def_precision;
}
else if(strings.strConversion.__getType(this.__args) == 'object') {
return this.__args[this.getKey()] && this.__args[this.getKey()][0] || this.__def_precision;
}
else { return this.__def_precision; }
}
};
this.getPaddingLength = function(){
var match = false;
if (this.isAlternate()) {
match = this.getString().match(/0?#0?(\d+)/);
if (match && match[1]) { return parseInt(match[1], 10); }
}
match = this.getString().match(/(0|\.)(\d+|\*)/g);
return match && parseInt(match[0].slice(1), 10) || 0;
};
this.getPaddingString = function(){
var o = '';
if (this.isAlternate()) { o = ' '; }
// 0 take precedence on alternate format
if (this.getFormat().match(/#0|0#|^0|\.\d+/)) { o = '0'; }
return o;
};
this.getFlags = function(){
var match = this.getString().matc(/^(0|\#|\-|\+|\s)+/);
return match && match[0].split('') || [];
};
this.isAlternate = function() {
return !!this.getFormat().match(/^0?#/);
};
};
var arguments2Array = function(args, shift) {
var o = [];
for (l=args.length, x=(shift || 0)-1; x<l;x++) { o.push(args[x]); }
return o;
};
$.extend(strings);
})(jQuery);
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