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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
if(!dojo._hasResource["dojo.string"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojo.string"] = true;
dojo.provide("dojo.string");
dojo.getObject("string", true, dojo);
/*=====
dojo.string = {
// summary: String utilities for Dojo
};
=====*/
dojo.string.rep = function(/*String*/str, /*Integer*/num){
// summary:
// Efficiently replicate a string `n` times.
// str:
// the string to replicate
// num:
// number of times to replicate the string
if(num <= 0 || !str){ return ""; }
var buf = [];
for(;;){
if(num & 1){
buf.push(str);
}
if(!(num >>= 1)){ break; }
str += str;
}
return buf.join(""); // String
};
dojo.string.pad = function(/*String*/text, /*Integer*/size, /*String?*/ch, /*Boolean?*/end){
// summary:
// Pad a string to guarantee that it is at least `size` length by
// filling with the character `ch` at either the start or end of the
// string. Pads at the start, by default.
// text:
// the string to pad
// size:
// length to provide padding
// ch:
// character to pad, defaults to '0'
// end:
// adds padding at the end if true, otherwise pads at start
// example:
// | // Fill the string to length 10 with "+" characters on the right. Yields "Dojo++++++".
// | dojo.string.pad("Dojo", 10, "+", true);
if(!ch){
ch = '0';
}
var out = String(text),
pad = dojo.string.rep(ch, Math.ceil((size - out.length) / ch.length));
return end ? out + pad : pad + out; // String
};
dojo.string.substitute = function( /*String*/ template,
/*Object|Array*/map,
/*Function?*/ transform,
/*Object?*/ thisObject){
// summary:
// Performs parameterized substitutions on a string. Throws an
// exception if any parameter is unmatched.
// template:
// a string with expressions in the form `${key}` to be replaced or
// `${key:format}` which specifies a format function. keys are case-sensitive.
// map:
// hash to search for substitutions
// transform:
// a function to process all parameters before substitution takes
// place, e.g. mylib.encodeXML
// thisObject:
// where to look for optional format function; default to the global
// namespace
// example:
// Substitutes two expressions in a string from an Array or Object
// | // returns "File 'foo.html' is not found in directory '/temp'."
// | // by providing substitution data in an Array
// | dojo.string.substitute(
// | "File '${0}' is not found in directory '${1}'.",
// | ["foo.html","/temp"]
// | );
// |
// | // also returns "File 'foo.html' is not found in directory '/temp'."
// | // but provides substitution data in an Object structure. Dotted
// | // notation may be used to traverse the structure.
// | dojo.string.substitute(
// | "File '${name}' is not found in directory '${info.dir}'.",
// | { name: "foo.html", info: { dir: "/temp" } }
// | );
// example:
// Use a transform function to modify the values:
// | // returns "file 'foo.html' is not found in directory '/temp'."
// | dojo.string.substitute(
// | "${0} is not found in ${1}.",
// | ["foo.html","/temp"],
// | function(str){
// | // try to figure out the type
// | var prefix = (str.charAt(0) == "/") ? "directory": "file";
// | return prefix + " '" + str + "'";
// | }
// | );
// example:
// Use a formatter
// | // returns "thinger -- howdy"
// | dojo.string.substitute(
// | "${0:postfix}", ["thinger"], null, {
// | postfix: function(value, key){
// | return value + " -- howdy";
// | }
// | }
// | );
thisObject = thisObject || dojo.global;
transform = transform ?
dojo.hitch(thisObject, transform) : function(v){ return v; };
return template.replace(/\$\{([^\s\:\}]+)(?:\:([^\s\:\}]+))?\}/g,
function(match, key, format){
var value = dojo.getObject(key, false, map);
if(format){
value = dojo.getObject(format, false, thisObject).call(thisObject, value, key);
}
return transform(value, key).toString();
}); // String
};
/*=====
dojo.string.trim = function(str){
// summary:
// Trims whitespace from both sides of the string
// str: String
// String to be trimmed
// returns: String
// Returns the trimmed string
// description:
// This version of trim() was taken from [Steven Levithan's blog](http://blog.stevenlevithan.com/archives/faster-trim-javascript).
// The short yet performant version of this function is dojo.trim(),
// which is part of Dojo base. Uses String.prototype.trim instead, if available.
return ""; // String
}
=====*/
dojo.string.trim = String.prototype.trim ?
dojo.trim : // aliasing to the native function
function(str){
str = str.replace(/^\s+/, '');
for(var i = str.length - 1; i >= 0; i--){
if(/\S/.test(str.charAt(i))){
str = str.substring(0, i + 1);
break;
}
}
return str;
};
}
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