/lib/yuilib/3.17.2/handlebars-base/handlebars-base.js

/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/

YUI.add('handlebars-base', function (Y, NAME) {

/*!
Handlebars.js - Copyright (C) 2011 Yehuda Katz
https://raw.github.com/wycats/handlebars.js/master/LICENSE
*/
// This file contains YUI-specific wrapper code and overrides for the
// handlebars-base module.

/**
Handlebars is a simple template language inspired by Mustache.

This is a YUI port of the original Handlebars project, which can be found at
<https://github.com/wycats/handlebars.js>.

@module handlebars
@main handlebars
@since 3.5.0
*/

/**
Provides basic Handlebars template rendering functionality. Use this module when
you only need to render pre-compiled templates.

@module handlebars
@submodule handlebars-base
*/

/**
Handlebars is a simple template language inspired by Mustache.

This is a YUI port of the original Handlebars project, which can be found at
<https://github.com/wycats/handlebars.js>.

@class Handlebars
@since 3.5.0
*/
var Handlebars = Y.namespace('Handlebars');
/* THIS FILE IS GENERATED BY A BUILD SCRIPT - DO NOT EDIT! */

Handlebars.VERSION = "1.0.0";
Handlebars.COMPILER_REVISION = 4;

Handlebars.REVISION_CHANGES = {
  1: '<= 1.0.rc.2', // 1.0.rc.2 is actually rev2 but doesn't report it
  2: '== 1.0.0-rc.3',
  3: '== 1.0.0-rc.4',
  4: '>= 1.0.0'
};

Handlebars.helpers  = {};
Handlebars.partials = {};

var toString = Object.prototype.toString,
    functionType = '[object Function]',
    objectType = '[object Object]';

Handlebars.registerHelper = function(name, fn, inverse) {
  if (toString.call(name) === objectType) {
    if (inverse || fn) { throw new Handlebars.Exception('Arg not supported with multiple helpers'); }
    Handlebars.Utils.extend(this.helpers, name);
  } else {
    if (inverse) { fn.not = inverse; }
    this.helpers[name] = fn;
  }
};

Handlebars.registerPartial = function(name, str) {
  if (toString.call(name) === objectType) {
    Handlebars.Utils.extend(this.partials,  name);
  } else {
    this.partials[name] = str;
  }
};

Handlebars.registerHelper('helperMissing', function(arg) {
  if(arguments.length === 2) {
    return undefined;
  } else {
    throw new Error("Missing helper: '" + arg + "'");
  }
});

Handlebars.registerHelper('blockHelperMissing', function(context, options) {
  var inverse = options.inverse || function() {}, fn = options.fn;

  var type = toString.call(context);

  if(type === functionType) { context = context.call(this); }

  if(context === true) {
    return fn(this);
  } else if(context === false || context == null) {
    return inverse(this);
  } else if(type === "[object Array]") {
    if(context.length > 0) {
      return Handlebars.helpers.each(context, options);
    } else {
      return inverse(this);
    }
  } else {
    return fn(context);
  }
});

Handlebars.K = function() {};

Handlebars.createFrame = Object.create || function(object) {
  Handlebars.K.prototype = object;
  var obj = new Handlebars.K();
  Handlebars.K.prototype = null;
  return obj;
};

Handlebars.logger = {
  DEBUG: 0, INFO: 1, WARN: 2, ERROR: 3, level: 3,

  methodMap: {0: 'debug', 1: 'info', 2: 'warn', 3: 'error'},

  // can be overridden in the host environment
  log: function(level, obj) {
    if (Handlebars.logger.level <= level) {
      var method = Handlebars.logger.methodMap[level];
      if (typeof console !== 'undefined' && console[method]) {
        console[method].call(console, obj);
      }
    }
  }
};

Handlebars.log = function(level, obj) { Handlebars.logger.log(level, obj); };

Handlebars.registerHelper('each', function(context, options) {
  var fn = options.fn, inverse = options.inverse;
  var i = 0, ret = "", data;

  var type = toString.call(context);
  if(type === functionType) { context = context.call(this); }

  if (options.data) {
    data = Handlebars.createFrame(options.data);
  }

  if(context && typeof context === 'object') {
    if(context instanceof Array){
      for(var j = context.length; i<j; i++) {
        if (data) { data.index = i; }
        ret = ret + fn(context[i], { data: data });
      }
    } else {
      for(var key in context) {
        if(context.hasOwnProperty(key)) {
          if(data) { data.key = key; }
          ret = ret + fn(context[key], {data: data});
          i++;
        }
      }
    }
  }

  if(i === 0){
    ret = inverse(this);
  }

  return ret;
});

Handlebars.registerHelper('if', function(conditional, options) {
  var type = toString.call(conditional);
  if(type === functionType) { conditional = conditional.call(this); }

  if(!conditional || Handlebars.Utils.isEmpty(conditional)) {
    return options.inverse(this);
  } else {
    return options.fn(this);
  }
});

Handlebars.registerHelper('unless', function(conditional, options) {
  return Handlebars.helpers['if'].call(this, conditional, {fn: options.inverse, inverse: options.fn});
});

Handlebars.registerHelper('with', function(context, options) {
  var type = toString.call(context);
  if(type === functionType) { context = context.call(this); }

  if (!Handlebars.Utils.isEmpty(context)) return options.fn(context);
});

Handlebars.registerHelper('log', function(context, options) {
  var level = options.data && options.data.level != null ? parseInt(options.data.level, 10) : 1;
  Handlebars.log(level, context);
});
/* THIS FILE IS GENERATED BY A BUILD SCRIPT - DO NOT EDIT! */

var errorProps = ['description', 'fileName', 'lineNumber', 'message', 'name', 'number', 'stack'];

Handlebars.Exception = function(message) {
  var tmp = Error.prototype.constructor.apply(this, arguments);

  // Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
  for (var idx = 0; idx < errorProps.length; idx++) {
    this[errorProps[idx]] = tmp[errorProps[idx]];
  }
};
Handlebars.Exception.prototype = new Error();

// Build out our basic SafeString type
Handlebars.SafeString = function(string) {
  this.string = string;
};
Handlebars.SafeString.prototype.toString = function() {
  return this.string.toString();
};

var escape = {
  "&": "&amp;",
  "<": "&lt;",
  ">": "&gt;",
  '"': "&quot;",
  "'": "&#x27;",
  "`": "&#x60;"
};

var badChars = /[&<>"'`]/g;
var possible = /[&<>"'`]/;

var escapeChar = function(chr) {
  return escape[chr] || "&amp;";
};

Handlebars.Utils = {
  extend: function(obj, value) {
    for(var key in value) {
      if(value.hasOwnProperty(key)) {
        obj[key] = value[key];
      }
    }
  },

  escapeExpression: function(string) {
    // don't escape SafeStrings, since they're already safe
    if (string instanceof Handlebars.SafeString) {
      return string.toString();
    } else if (string == null || string === false) {
      return "";
    }

    // Force a string conversion as this will be done by the append regardless and
    // the regex test will do this transparently behind the scenes, causing issues if
    // an object's to string has escaped characters in it.
    string = string.toString();

    if(!possible.test(string)) { return string; }
    return string.replace(badChars, escapeChar);
  },

  isEmpty: function(value) {
    if (!value && value !== 0) {
      return true;
    } else if(toString.call(value) === "[object Array]" && value.length === 0) {
      return true;
    } else {
      return false;
    }
  }
};
/* THIS FILE IS GENERATED BY A BUILD SCRIPT - DO NOT EDIT! */

Handlebars.VM = {
  template: function(templateSpec) {
    // Just add water
    var container = {
      escapeExpression: Handlebars.Utils.escapeExpression,
      invokePartial: Handlebars.VM.invokePartial,
      programs: [],
      program: function(i, fn, data) {
        var programWrapper = this.programs[i];
        if(data) {
          programWrapper = Handlebars.VM.program(i, fn, data);
        } else if (!programWrapper) {
          programWrapper = this.programs[i] = Handlebars.VM.program(i, fn);
        }
        return programWrapper;
      },
      merge: function(param, common) {
        var ret = param || common;

        if (param && common) {
          ret = {};
          Handlebars.Utils.extend(ret, common);
          Handlebars.Utils.extend(ret, param);
        }
        return ret;
      },
      programWithDepth: Handlebars.VM.programWithDepth,
      noop: Handlebars.VM.noop,
      compilerInfo: null
    };

    return function(context, options) {
      options = options || {};
      var result = templateSpec.call(container, Handlebars, context, options.helpers, options.partials, options.data);

      var compilerInfo = container.compilerInfo || [],
          compilerRevision = compilerInfo[0] || 1,
          currentRevision = Handlebars.COMPILER_REVISION;

      if (compilerRevision !== currentRevision) {
        if (compilerRevision < currentRevision) {
          var runtimeVersions = Handlebars.REVISION_CHANGES[currentRevision],
              compilerVersions = Handlebars.REVISION_CHANGES[compilerRevision];
          throw "Template was precompiled with an older version of Handlebars than the current runtime. "+
                "Please update your precompiler to a newer version ("+runtimeVersions+") or downgrade your runtime to an older version ("+compilerVersions+").";
        } else {
          // Use the embedded version info since the runtime doesn't know about this revision yet
          throw "Template was precompiled with a newer version of Handlebars than the current runtime. "+
                "Please update your runtime to a newer version ("+compilerInfo[1]+").";
        }
      }

      return result;
    };
  },

  programWithDepth: function(i, fn, data /*, $depth */) {
    var args = Array.prototype.slice.call(arguments, 3);

    var program = function(context, options) {
      options = options || {};

      return fn.apply(this, [context, options.data || data].concat(args));
    };
    program.program = i;
    program.depth = args.length;
    return program;
  },
  program: function(i, fn, data) {
    var program = function(context, options) {
      options = options || {};

      return fn(context, options.data || data);
    };
    program.program = i;
    program.depth = 0;
    return program;
  },
  noop: function() { return ""; },
  invokePartial: function(partial, name, context, helpers, partials, data) {
    var options = { helpers: helpers, partials: partials, data: data };

    if(partial === undefined) {
      throw new Handlebars.Exception("The partial " + name + " could not be found");
    } else if(partial instanceof Function) {
      return partial(context, options);
    } else if (!Handlebars.compile) {
      throw new Handlebars.Exception("The partial " + name + " could not be compiled when running in runtime-only mode");
    } else {
      partials[name] = Handlebars.compile(partial, {data: data !== undefined});
      return partials[name](context, options);
    }
  }
};

Handlebars.template = Handlebars.VM.template;
// This file contains YUI-specific wrapper code and overrides for the
// handlebars-base module.

Handlebars.VERSION += '-yui';

/**
Registers a helper function that will be made available to all templates.

Helper functions receive the current template context as the `this` object, and
can also receive arguments passed by the template.

@example

    Y.Handlebars.registerHelper('linkify', function () {
        return '<a href="' + Y.Escape.html(this.url) + '">' +
            Y.Escape.html(this.text) + '</a>';
    });

    var source = '<ul>{{#links}}<li>{{{linkify}}}</li>{{/links}}</ul>';

    Y.Handlebars.render(source, {
        links: [
            {url: '/foo', text: 'Foo'},
            {url: '/bar', text: 'Bar'},
            {url: '/baz', text: 'Baz'}
        ]
    });

@method registerHelper
@param {String} name Name of this helper.
@param {Function} fn Helper function.
@param {Boolean} [inverse=false] If `true`, this helper will be considered an
    "inverse" helper, like "unless". This means it will only be called if the
    expression given in the template evaluates to a false or empty value.
*/

/**
Registers a partial that will be made available to all templates.

A partial is another template that can be used to render part of a larger
template. For example, a website with a common header and footer across all its
pages might use a template for each page, which would call shared partials to
render the headers and footers.

Partials may be specified as uncompiled template strings or as compiled template
functions.

@example

    Y.Handlebars.registerPartial('header', '<h1>{{title}}</h1>');
    Y.Handlebars.registerPartial('footer', 'Copyright (c) 2011 by Me.');

    var source = '{{> header}} <p>Mustaches are awesome!</p> {{> footer}}';

    Y.Handlebars.render(source, {title: 'My Page About Mustaches'});

@method registerPartial
@param {String} name Name of this partial.
@param {Function|String} partial Template string or compiled template function.
*/

/**
Converts a precompiled template into a renderable template function.

@example

    <script src="precompiled-template.js"></script>
    <script>
    YUI().use('handlebars-base', function (Y) {
        // Convert the precompiled template function into a renderable template
        // function.
        var template = Y.Handlebars.template(precompiledTemplate);

        // Render it.
        template({pie: 'Pumpkin'});
    });
    </script>

@method template
@param {Function} template Precompiled Handlebars template function.
@return {Function} Compiled template function.
*/

// Alias for Y.Handlebars.template(), used by Y.Template.
Handlebars.revive = Handlebars.template;

// Make Y.Template.Handlebars an alias for Y.Handlebars.
Y.namespace('Template').Handlebars = Handlebars;


}, '3.17.2', {"requires": []});