/*

YUI 3.10.3 (build 2fb5187)

Copyright 2013 Yahoo! Inc. All rights reserved.

Licensed under the BSD License.

http://yuilibrary.com/license/

*/

YUI.add('substitute', function (Y, NAME) {

/**

 * String variable substitution and string formatting.

 * If included, the substitute method is added to the YUI instance.

 *

 * @module substitute

 * @deprecated

 */

    var L = Y.Lang, DUMP = 'dump', SPACE = ' ', LBRACE = '{', RBRACE = '}',

		savedRegExp =  /(~-(\d+)-~)/g, lBraceRegExp = /\{LBRACE\}/g, rBraceRegExp = /\{RBRACE\}/g,

    /**

     * The following methods are added to the YUI instance

     *

     * <strong>Use `Y.Lang.sub` or `Y.Template` instead.</strong>

     * @class YUI~substitute

     * @deprecated

     */

/**

<strong>Use `Y.Lang.sub` or `Y.Template` instead.</strong>

Does `{placeholder}` substitution on a string.  The object passed as the

second parameter provides values to replace the `{placeholder}`s.

{placeholder} token names must match property names of the object.  For

example

`var greeting = Y.substitute("Hello, {who}!", { who: "World" });`

`{placeholder}` tokens that are undefined on the object map will be left in

tact (leaving unsightly "{placeholder}"s in the output string).  If your

replacement strings *should* include curly braces, use `{LBRACE}` and

`{RBRACE}` in your object map string value.

If a function is passed as a third argument, it will be called for each

{placeholder} found.  The {placeholder} name is passed as the first value

and the value from the object map is passed as the second.  If the

{placeholder} contains a space, the first token will be used to identify

the object map property and the remainder will be passed as a third

argument to the function.  See below for an example.

If the value in the object map for a given {placeholder} is an object and

the `dump` module is loaded, the replacement value will be the string

result of calling `Y.dump(...)` with the object as input.  Include a

numeric second token in the {placeholder} to configure the depth of the call

to `Y.dump(...)`, e.g. "{someObject 2}".  See the

<a href="../classes/YUI.html#method_dump">`dump`</a> method for details.

    @method substitute

    @deprecated

    @param {string} s The string that will be modified.

    @param {object} o An object containing the replacement values.

    @param {function} f An optional function that can be used to

                        process each match.  It receives the key,

                        value, and any extra metadata included with

                        the key inside of the braces.

    @param {boolean} recurse if true, the replacement will be recursive,

                        letting you have replacement tokens in replacement text.

                        The default is false.

    @return {string} the substituted string.

    @example

        function getAttrVal(key, value, name) {

            // Return a string describing the named attribute and its value if

            // the first token is @. Otherwise, return the value from the

            // replacement object.

            if (key === "@") {

                value += name + " Value: " + myObject.get(name);

            }

            return value;

        }

        // Assuming myObject.set('foo', 'flowers'),

        // => "Attr: foo Value: flowers"

        var attrVal = Y.substitute("{@ foo}", { "@": "Attr: " }, getAttrVal);

    **/

    substitute = function(s, o, f, recurse) {

        var i, j, k, key, v, meta, saved = [], token, dump,

            lidx = s.length;

        for (;;) {

            i = s.lastIndexOf(LBRACE, lidx);

            if (i < 0) {

                break;

            }

            j = s.indexOf(RBRACE, i);

            if (i + 1 >= j) {

                break;

            }

            //Extract key and meta info

            token = s.substring(i + 1, j);

            key = token;

            meta = null;

            k = key.indexOf(SPACE);

            if (k > -1) {

                meta = key.substring(k + 1);

                key = key.substring(0, k);

            }

            // lookup the value

            v = o[key];

            // if a substitution function was provided, execute it

            if (f) {

                v = f(key, v, meta);

            }

            if (L.isObject(v)) {

                if (!Y.dump) {

                    v = v.toString();

                } else {

                    if (L.isArray(v)) {

                        v = Y.dump(v, parseInt(meta, 10));

                    } else {

                        meta = meta || '';

                        // look for the keyword 'dump', if found force obj dump

                        dump = meta.indexOf(DUMP);

                        if (dump > -1) {

                            meta = meta.substring(4);

                        }

                        // use the toString if it is not the Object toString

                        // and the 'dump' meta info was not found

                        if (v.toString === Object.prototype.toString ||

                            dump > -1) {

                            v = Y.dump(v, parseInt(meta, 10));

                        } else {

                            v = v.toString();

                        }

                    }

                }

			} else if (L.isUndefined(v)) {

                // This {block} has no replace string. Save it for later.

                v = '~-' + saved.length + '-~';

					saved.push(token);

                // break;

            }

            s = s.substring(0, i) + v + s.substring(j + 1);

			if (!recurse) {

				lidx = i - 1;

			} 

		}

		// restore saved {block}s and escaped braces

		return s

			.replace(savedRegExp, function (str, p1, p2) {

				return LBRACE + saved[parseInt(p2,10)] + RBRACE;

			})

			.replace(lBraceRegExp, LBRACE)

			.replace(rBraceRegExp, RBRACE)

		;

	};

    Y.substitute = substitute;

    L.substitute = substitute;

}, '3.10.3', {"requires": ["yui-base"], "optional": ["dump"]});