ashleshajs/ashlesha/public/static/bootstrap/docs/build/node_modules/hogan.js/lib/template.js

AshleshaJS is a framework to build high performance and maintainable single page web applications. It uses ExpressJS and YUI3 as foundation. It is tightly coupled with Twitter Bootstrap for the CSS framework but you can use any other framework as well.

/*
 *  Copyright 2011 Twitter, Inc.
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

var Hogan = {};

(function (Hogan) {
  Hogan.Template = function constructor(renderFunc, text, compiler) {
    if (renderFunc) {
      this.r = renderFunc;
    }
    this.c = compiler;
    this.text = text || '';
  }

  Hogan.Template.prototype = {
    // render: replaced by generated code.
    r: function (context, partials, indent) { return ''; },

    // variable escaping
    v: hoganEscape,

    render: function render(context, partials, indent) {
      return this.ri([context], partials || {}, indent);
    },

    // render internal -- a hook for overrides that catches partials too
    ri: function (context, partials, indent) {
      return this.r(context, partials, indent);
    },

    // tries to find a partial in the curent scope and render it
    rp: function(name, context, partials, indent) {
      var partial = partials[name];

      if (!partial) {
        return '';
      }

      if (this.c && typeof partial == 'string') {
        partial = this.c.compile(partial);
      }

      return partial.ri(context, partials, indent);
    },

    // render a section
    rs: function(context, partials, section) {
      var buf = '',
          tail = context[context.length - 1];

      if (!isArray(tail)) {
        return buf = section(context, partials);
      }

      for (var i = 0; i < tail.length; i++) {
        context.push(tail[i]);
        buf += section(context, partials);
        context.pop();
      }

      return buf;
    },

    // maybe start a section
    s: function(val, ctx, partials, inverted, start, end, tags) {
      var pass;

      if (isArray(val) && val.length === 0) {
        return false;
      }

      if (typeof val == 'function') {
        val = this.ls(val, ctx, partials, inverted, start, end, tags);
      }

      pass = (val === '') || !!val;

      if (!inverted && pass && ctx) {
        ctx.push((typeof val == 'object') ? val : ctx[ctx.length - 1]);
      }

      return pass;
    },

    // find values with dotted names
    d: function(key, ctx, partials, returnFound) {
      var names = key.split('.'),
          val = this.f(names[0], ctx, partials, returnFound),
          cx = null;

      if (key === '.' && isArray(ctx[ctx.length - 2])) {
        return ctx[ctx.length - 1];
      }

      for (var i = 1; i < names.length; i++) {
        if (val && typeof val == 'object' && names[i] in val) {
          cx = val;
          val = val[names[i]];
        } else {
          val = '';
        }
      }

      if (returnFound && !val) {
        return false;
      }

      if (!returnFound && typeof val == 'function') {
        ctx.push(cx);
        val = this.lv(val, ctx, partials);
        ctx.pop();
      }

      return val;
    },

    // find values with normal names
    f: function(key, ctx, partials, returnFound) {
      var val = false,
          v = null,
          found = false;

      for (var i = ctx.length - 1; i >= 0; i--) {
        v = ctx[i];
        if (v && typeof v == 'object' && key in v) {
          val = v[key];
          found = true;
          break;
        }
      }

      if (!found) {
        return (returnFound) ? false : "";
      }

      if (!returnFound && typeof val == 'function') {
        val = this.lv(val, ctx, partials);
      }

      return val;
    },

    // higher order templates
    ho: function(val, cx, partials, text, tags) {
      var compiler = this.c;
      var t = val.call(cx, text, function(t) {
        return compiler.compile(t, {delimiters: tags}).render(cx, partials);
      });
      var s = compiler.compile(t.toString(), {delimiters: tags}).render(cx, partials);
      this.b = s;
      return false;
    },

    // higher order template result buffer
    b: '',

    // lambda replace section
    ls: function(val, ctx, partials, inverted, start, end, tags) {
      var cx = ctx[ctx.length - 1],
          t = null;

      if (!inverted && this.c && val.length > 0) {
        return this.ho(val, cx, partials, this.text.substring(start, end), tags);
      }

      t = val.call(cx);

      if (typeof t == 'function') {
        if (inverted) {
          return true;
        } else if (this.c) {
          return this.ho(t, cx, partials, this.text.substring(start, end), tags);
        }
      }

      return t;
    },

    // lambda replace variable
    lv: function(val, ctx, partials) {
      var cx = ctx[ctx.length - 1];
      var result = val.call(cx);
      if (typeof result == 'function') {
        result = result.call(cx);
      }
      result = result.toString();

      if (this.c && ~result.indexOf("{{")) {
        return this.c.compile(result).render(cx, partials);
      }

      return result;
    }

  };

  var rAmp = /&/g,
      rLt = /</g,
      rGt = />/g,
      rApos =/\'/g,
      rQuot = /\"/g,
      hChars =/[&<>\"\']/;

  function hoganEscape(str) {
    str = String((str === null || str === undefined) ? '' : str);
    return hChars.test(str) ?
      str
        .replace(rAmp,'&amp;')
        .replace(rLt,'&lt;')
        .replace(rGt,'&gt;')
        .replace(rApos,'&#39;')
        .replace(rQuot, '&quot;') :
      str;
  }

  var isArray = Array.isArray || function(a) {
    return Object.prototype.toString.call(a) === '[object Array]';
  };

})(typeof exports !== 'undefined' ? exports : Hogan);