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Filename : parser.js
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// Generated by CoffeeScript 1.12.7
(function() {
  "use strict";
  var bom, defaults, events, isEmpty, processItem, processors, sax, setImmediate,
    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    hasProp = {}.hasOwnProperty;

  sax = require('sax');

  events = require('events');

  bom = require('./bom');

  processors = require('./processors');

  setImmediate = require('timers').setImmediate;

  defaults = require('./defaults').defaults;

  isEmpty = function(thing) {
    return typeof thing === "object" && (thing != null) && Object.keys(thing).length === 0;
  };

  processItem = function(processors, item, key) {
    var i, len, process;
    for (i = 0, len = processors.length; i < len; i++) {
      process = processors[i];
      item = process(item, key);
    }
    return item;
  };

  exports.Parser = (function(superClass) {
    extend(Parser, superClass);

    function Parser(opts) {
      this.parseStringPromise = bind(this.parseStringPromise, this);
      this.parseString = bind(this.parseString, this);
      this.reset = bind(this.reset, this);
      this.assignOrPush = bind(this.assignOrPush, this);
      this.processAsync = bind(this.processAsync, this);
      var key, ref, value;
      if (!(this instanceof exports.Parser)) {
        return new exports.Parser(opts);
      }
      this.options = {};
      ref = defaults["0.2"];
      for (key in ref) {
        if (!hasProp.call(ref, key)) continue;
        value = ref[key];
        this.options[key] = value;
      }
      for (key in opts) {
        if (!hasProp.call(opts, key)) continue;
        value = opts[key];
        this.options[key] = value;
      }
      if (this.options.xmlns) {
        this.options.xmlnskey = this.options.attrkey + "ns";
      }
      if (this.options.normalizeTags) {
        if (!this.options.tagNameProcessors) {
          this.options.tagNameProcessors = [];
        }
        this.options.tagNameProcessors.unshift(processors.normalize);
      }
      this.reset();
    }

    Parser.prototype.processAsync = function() {
      var chunk, err;
      try {
        if (this.remaining.length <= this.options.chunkSize) {
          chunk = this.remaining;
          this.remaining = '';
          this.saxParser = this.saxParser.write(chunk);
          return this.saxParser.close();
        } else {
          chunk = this.remaining.substr(0, this.options.chunkSize);
          this.remaining = this.remaining.substr(this.options.chunkSize, this.remaining.length);
          this.saxParser = this.saxParser.write(chunk);
          return setImmediate(this.processAsync);
        }
      } catch (error1) {
        err = error1;
        if (!this.saxParser.errThrown) {
          this.saxParser.errThrown = true;
          return this.emit(err);
        }
      }
    };

    Parser.prototype.assignOrPush = function(obj, key, newValue) {
      if (!(key in obj)) {
        if (!this.options.explicitArray) {
          return obj[key] = newValue;
        } else {
          return obj[key] = [newValue];
        }
      } else {
        if (!(obj[key] instanceof Array)) {
          obj[key] = [obj[key]];
        }
        return obj[key].push(newValue);
      }
    };

    Parser.prototype.reset = function() {
      var attrkey, charkey, ontext, stack;
      this.removeAllListeners();
      this.saxParser = sax.parser(this.options.strict, {
        trim: false,
        normalize: false,
        xmlns: this.options.xmlns
      });
      this.saxParser.errThrown = false;
      this.saxParser.onerror = (function(_this) {
        return function(error) {
          _this.saxParser.resume();
          if (!_this.saxParser.errThrown) {
            _this.saxParser.errThrown = true;
            return _this.emit("error", error);
          }
        };
      })(this);
      this.saxParser.onend = (function(_this) {
        return function() {
          if (!_this.saxParser.ended) {
            _this.saxParser.ended = true;
            return _this.emit("end", _this.resultObject);
          }
        };
      })(this);
      this.saxParser.ended = false;
      this.EXPLICIT_CHARKEY = this.options.explicitCharkey;
      this.resultObject = null;
      stack = [];
      attrkey = this.options.attrkey;
      charkey = this.options.charkey;
      this.saxParser.onopentag = (function(_this) {
        return function(node) {
          var key, newValue, obj, processedKey, ref;
          obj = Object.create(null);
          obj[charkey] = "";
          if (!_this.options.ignoreAttrs) {
            ref = node.attributes;
            for (key in ref) {
              if (!hasProp.call(ref, key)) continue;
              if (!(attrkey in obj) && !_this.options.mergeAttrs) {
                obj[attrkey] = Object.create(null);
              }
              newValue = _this.options.attrValueProcessors ? processItem(_this.options.attrValueProcessors, node.attributes[key], key) : node.attributes[key];
              processedKey = _this.options.attrNameProcessors ? processItem(_this.options.attrNameProcessors, key) : key;
              if (_this.options.mergeAttrs) {
                _this.assignOrPush(obj, processedKey, newValue);
              } else {
                obj[attrkey][processedKey] = newValue;
              }
            }
          }
          obj["#name"] = _this.options.tagNameProcessors ? processItem(_this.options.tagNameProcessors, node.name) : node.name;
          if (_this.options.xmlns) {
            obj[_this.options.xmlnskey] = {
              uri: node.uri,
              local: node.local
            };
          }
          return stack.push(obj);
        };
      })(this);
      this.saxParser.onclosetag = (function(_this) {
        return function() {
          var cdata, emptyStr, key, node, nodeName, obj, objClone, old, s, xpath;
          obj = stack.pop();
          nodeName = obj["#name"];
          if (!_this.options.explicitChildren || !_this.options.preserveChildrenOrder) {
            delete obj["#name"];
          }
          if (obj.cdata === true) {
            cdata = obj.cdata;
            delete obj.cdata;
          }
          s = stack[stack.length - 1];
          if (obj[charkey].match(/^\s*$/) && !cdata) {
            emptyStr = obj[charkey];
            delete obj[charkey];
          } else {
            if (_this.options.trim) {
              obj[charkey] = obj[charkey].trim();
            }
            if (_this.options.normalize) {
              obj[charkey] = obj[charkey].replace(/\s{2,}/g, " ").trim();
            }
            obj[charkey] = _this.options.valueProcessors ? processItem(_this.options.valueProcessors, obj[charkey], nodeName) : obj[charkey];
            if (Object.keys(obj).length === 1 && charkey in obj && !_this.EXPLICIT_CHARKEY) {
              obj = obj[charkey];
            }
          }
          if (isEmpty(obj)) {
            if (typeof _this.options.emptyTag === 'function') {
              obj = _this.options.emptyTag();
            } else {
              obj = _this.options.emptyTag !== '' ? _this.options.emptyTag : emptyStr;
            }
          }
          if (_this.options.validator != null) {
            xpath = "/" + ((function() {
              var i, len, results;
              results = [];
              for (i = 0, len = stack.length; i < len; i++) {
                node = stack[i];
                results.push(node["#name"]);
              }
              return results;
            })()).concat(nodeName).join("/");
            (function() {
              var err;
              try {
                return obj = _this.options.validator(xpath, s && s[nodeName], obj);
              } catch (error1) {
                err = error1;
                return _this.emit("error", err);
              }
            })();
          }
          if (_this.options.explicitChildren && !_this.options.mergeAttrs && typeof obj === 'object') {
            if (!_this.options.preserveChildrenOrder) {
              node = Object.create(null);
              if (_this.options.attrkey in obj) {
                node[_this.options.attrkey] = obj[_this.options.attrkey];
                delete obj[_this.options.attrkey];
              }
              if (!_this.options.charsAsChildren && _this.options.charkey in obj) {
                node[_this.options.charkey] = obj[_this.options.charkey];
                delete obj[_this.options.charkey];
              }
              if (Object.getOwnPropertyNames(obj).length > 0) {
                node[_this.options.childkey] = obj;
              }
              obj = node;
            } else if (s) {
              s[_this.options.childkey] = s[_this.options.childkey] || [];
              objClone = Object.create(null);
              for (key in obj) {
                if (!hasProp.call(obj, key)) continue;
                objClone[key] = obj[key];
              }
              s[_this.options.childkey].push(objClone);
              delete obj["#name"];
              if (Object.keys(obj).length === 1 && charkey in obj && !_this.EXPLICIT_CHARKEY) {
                obj = obj[charkey];
              }
            }
          }
          if (stack.length > 0) {
            return _this.assignOrPush(s, nodeName, obj);
          } else {
            if (_this.options.explicitRoot) {
              old = obj;
              obj = Object.create(null);
              obj[nodeName] = old;
            }
            _this.resultObject = obj;
            _this.saxParser.ended = true;
            return _this.emit("end", _this.resultObject);
          }
        };
      })(this);
      ontext = (function(_this) {
        return function(text) {
          var charChild, s;
          s = stack[stack.length - 1];
          if (s) {
            s[charkey] += text;
            if (_this.options.explicitChildren && _this.options.preserveChildrenOrder && _this.options.charsAsChildren && (_this.options.includeWhiteChars || text.replace(/\\n/g, '').trim() !== '')) {
              s[_this.options.childkey] = s[_this.options.childkey] || [];
              charChild = {
                '#name': '__text__'
              };
              charChild[charkey] = text;
              if (_this.options.normalize) {
                charChild[charkey] = charChild[charkey].replace(/\s{2,}/g, " ").trim();
              }
              s[_this.options.childkey].push(charChild);
            }
            return s;
          }
        };
      })(this);
      this.saxParser.ontext = ontext;
      return this.saxParser.oncdata = (function(_this) {
        return function(text) {
          var s;
          s = ontext(text);
          if (s) {
            return s.cdata = true;
          }
        };
      })(this);
    };

    Parser.prototype.parseString = function(str, cb) {
      var err;
      if ((cb != null) && typeof cb === "function") {
        this.on("end", function(result) {
          this.reset();
          return cb(null, result);
        });
        this.on("error", function(err) {
          this.reset();
          return cb(err);
        });
      }
      try {
        str = str.toString();
        if (str.trim() === '') {
          this.emit("end", null);
          return true;
        }
        str = bom.stripBOM(str);
        if (this.options.async) {
          this.remaining = str;
          setImmediate(this.processAsync);
          return this.saxParser;
        }
        return this.saxParser.write(str).close();
      } catch (error1) {
        err = error1;
        if (!(this.saxParser.errThrown || this.saxParser.ended)) {
          this.emit('error', err);
          return this.saxParser.errThrown = true;
        } else if (this.saxParser.ended) {
          throw err;
        }
      }
    };

    Parser.prototype.parseStringPromise = function(str) {
      return new Promise((function(_this) {
        return function(resolve, reject) {
          return _this.parseString(str, function(err, value) {
            if (err) {
              return reject(err);
            } else {
              return resolve(value);
            }
          });
        };
      })(this));
    };

    return Parser;

  })(events);

  exports.parseString = function(str, a, b) {
    var cb, options, parser;
    if (b != null) {
      if (typeof b === 'function') {
        cb = b;
      }
      if (typeof a === 'object') {
        options = a;
      }
    } else {
      if (typeof a === 'function') {
        cb = a;
      }
      options = {};
    }
    parser = new exports.Parser(options);
    return parser.parseString(str, cb);
  };

  exports.parseStringPromise = function(str, a) {
    var options, parser;
    if (typeof a === 'object') {
      options = a;
    }
    parser = new exports.Parser(options);
    return parser.parseStringPromise(str);
  };

}).call(this);