// Generated by CoffeeScript 1.12.7
var Parser, StringDecoder, stream, util;

stream = require('stream');

util = require('util');

StringDecoder = require('string_decoder').StringDecoder;

module.exports = function() {
  var callback, called, chunks, data, options, parser;
  if (arguments.length === 3) {
    data = arguments[0];
    options = arguments[1];
    callback = arguments[2];
    if (typeof callback !== 'function') {
      throw Error("Invalid callback argument: " + (JSON.stringify(callback)));
    }
    if (!(typeof data === 'string' || Buffer.isBuffer(arguments[0]))) {
      return callback(Error("Invalid data argument: " + (JSON.stringify(data))));
    }
  } else if (arguments.length === 2) {
    if (typeof arguments[0] === 'string' || Buffer.isBuffer(arguments[0])) {
      data = arguments[0];
    } else {
      options = arguments[0];
    }
    if (typeof arguments[1] === 'function') {
      callback = arguments[1];
    } else {
      options = arguments[1];
    }
  } else if (arguments.length === 1) {
    if (typeof arguments[0] === 'function') {
      callback = arguments[0];
    } else {
      options = arguments[0];
    }
  }
  if (options == null) {
    options = {};
  }
  parser = new Parser(options);
  if (data != null) {
    process.nextTick(function() {
      parser.write(data);
      return parser.end();
    });
  }
  if (callback) {
    called = false;
    chunks = options.objname ? {} : [];
    parser.on('readable', function() {
      var chunk, results;
      results = [];
      while (chunk = parser.read()) {
        if (options.objname) {
          results.push(chunks[chunk[0]] = chunk[1]);
        } else {
          results.push(chunks.push(chunk));
        }
      }
      return results;
    });
    parser.on('error', function(err) {
      called = true;
      return callback(err);
    });
    parser.on('end', function() {
      if (!called) {
        return callback(null, chunks);
      }
    });
  }
  return parser;
};

Parser = function(options) {
  var base, base1, base10, base11, base12, base13, base14, base15, base16, base2, base3, base4, base5, base6, base7, base8, base9, k, v;
  if (options == null) {
    options = {};
  }
  options.objectMode = true;
  this.options = {};
  for (k in options) {
    v = options[k];
    this.options[k] = v;
  }
  stream.Transform.call(this, this.options);
  if ((base = this.options).rowDelimiter == null) {
    base.rowDelimiter = null;
  }
  if (typeof this.options.rowDelimiter === 'string') {
    this.options.rowDelimiter = [this.options.rowDelimiter];
  }
  if ((base1 = this.options).delimiter == null) {
    base1.delimiter = ',';
  }
  if (this.options.quote !== void 0 && !this.options.quote) {
    this.options.quote = '';
  }
  if ((base2 = this.options).quote == null) {
    base2.quote = '"';
  }
  if ((base3 = this.options).escape == null) {
    base3.escape = '"';
  }
  if ((base4 = this.options).columns == null) {
    base4.columns = null;
  }
  if ((base5 = this.options).comment == null) {
    base5.comment = '';
  }
  if ((base6 = this.options).objname == null) {
    base6.objname = false;
  }
  if ((base7 = this.options).trim == null) {
    base7.trim = false;
  }
  if ((base8 = this.options).ltrim == null) {
    base8.ltrim = false;
  }
  if ((base9 = this.options).rtrim == null) {
    base9.rtrim = false;
  }
  if ((base10 = this.options).auto_parse == null) {
    base10.auto_parse = false;
  }
  if ((base11 = this.options).auto_parse_date == null) {
    base11.auto_parse_date = false;
  }
  if ((base12 = this.options).relax == null) {
    base12.relax = false;
  }
  if ((base13 = this.options).relax_column_count == null) {
    base13.relax_column_count = false;
  }
  if ((base14 = this.options).skip_empty_lines == null) {
    base14.skip_empty_lines = false;
  }
  if ((base15 = this.options).max_limit_on_data_read == null) {
    base15.max_limit_on_data_read = 128000;
  }
  if ((base16 = this.options).skip_lines_with_empty_values == null) {
    base16.skip_lines_with_empty_values = false;
  }
  this.lines = 0;
  this.count = 0;
  this.skipped_line_count = 0;
  this.empty_line_count = 0;
  this.is_int = /^(\-|\+)?([1-9]+[0-9]*)$/;
  this.is_float = function(value) {
    return (value - parseFloat(value) + 1) >= 0;
  };
  this._ = {
    decoder: new StringDecoder(),
    quoting: false,
    commenting: false,
    field: null,
    nextChar: null,
    closingQuote: 0,
    line: [],
    chunks: [],
    rawBuf: '',
    buf: '',
    rowDelimiterLength: this.options.rowDelimiter ? Math.max.apply(Math, this.options.rowDelimiter.map(function(v) {
      return v.length;
    })) : void 0
  };
  return this;
};

util.inherits(Parser, stream.Transform);

module.exports.Parser = Parser;

Parser.prototype._transform = function(chunk, encoding, callback) {
  var err;
  if (chunk instanceof Buffer) {
    chunk = this._.decoder.write(chunk);
  }
  err = this.__write(chunk, false);
  if (err) {
    return this.emit('error', err);
  }
  return callback();
};

Parser.prototype._flush = function(callback) {
  var err;
  err = this.__write(this._.decoder.end(), true);
  if (err) {
    return this.emit('error', err);
  }
  if (this._.quoting) {
    this.emit('error', new Error("Quoted field not terminated at line " + (this.lines + 1)));
    return;
  }
  if (this._.line.length > 0) {
    err = this.__push(this._.line);
    if (err) {
      return callback(err);
    }
  }
  return callback();
};

Parser.prototype.__push = function(line) {
  var call_column_udf, columns, err, field, i, j, len, lineAsColumns, rawBuf, ref, row;
  if (this.options.skip_lines_with_empty_values && line.join('').trim() === '') {
    return;
  }
  row = null;
  if (this.options.columns === true) {
    this.options.columns = line;
    rawBuf = '';
    return;
  } else if (typeof this.options.columns === 'function') {
    call_column_udf = function(fn, line) {
      var columns, err;
      try {
        columns = fn.call(null, line);
        return [null, columns];
      } catch (error) {
        err = error;
        return [err];
      }
    };
    ref = call_column_udf(this.options.columns, line), err = ref[0], columns = ref[1];
    if (err) {
      return err;
    }
    this.options.columns = columns;
    rawBuf = '';
    return;
  }
  if (!this._.line_length && line.length > 0) {
    this._.line_length = this.options.columns ? this.options.columns.length : line.length;
  }
  if (line.length === 1 && line[0] === '') {
    this.empty_line_count++;
  } else if (line.length !== this._.line_length) {
    if (this.options.relax_column_count) {
      this.skipped_line_count++;
    } else if (this.options.columns != null) {
      return Error("Number of columns on line " + this.lines + " does not match header");
    } else {
      return Error("Number of columns is inconsistent on line " + this.lines);
    }
  } else {
    this.count++;
  }
  if (this.options.columns != null) {
    lineAsColumns = {};
    for (i = j = 0, len = line.length; j < len; i = ++j) {
      field = line[i];
      if (this.options.columns[i] === false) {
        continue;
      }
      lineAsColumns[this.options.columns[i]] = field;
    }
    if (this.options.objname) {
      row = [lineAsColumns[this.options.objname], lineAsColumns];
    } else {
      row = lineAsColumns;
    }
  } else {
    row = line;
  }
  if (this.count < this.options.from) {
    return;
  }
  if (this.count > this.options.to) {
    return;
  }
  if (this.options.raw) {
    this.push({
      raw: this._.rawBuf,
      row: row
    });
    this._.rawBuf = '';
  } else {
    this.push(row);
  }
  return null;
};

Parser.prototype.__write = function(chars, end) {
  var areNextCharsDelimiter, areNextCharsRowDelimiters, auto_parse, char, err, escapeIsQuote, i, isDelimiter, isEscape, isNextCharAComment, isQuote, isRowDelimiter, isRowDelimiterLength, is_float, is_int, l, ltrim, nextCharPos, ref, ref1, ref2, ref3, ref4, ref5, remainingBuffer, rowDelimiter, rtrim, wasCommenting;
  is_int = (function(_this) {
    return function(value) {
      if (typeof _this.is_int === 'function') {
        return _this.is_int(value);
      } else {
        return _this.is_int.test(value);
      }
    };
  })(this);
  is_float = (function(_this) {
    return function(value) {
      if (typeof _this.is_float === 'function') {
        return _this.is_float(value);
      } else {
        return _this.is_float.test(value);
      }
    };
  })(this);
  auto_parse = (function(_this) {
    return function(value) {
      var m;
      if (!_this.options.auto_parse) {
        return value;
      }
      if (is_int(value)) {
        value = parseInt(value);
      } else if (is_float(value)) {
        value = parseFloat(value);
      } else if (_this.options.auto_parse_date) {
        m = Date.parse(value);
        if (!isNaN(m)) {
          value = new Date(m);
        }
      }
      return value;
    };
  })(this);
  ltrim = this.options.trim || this.options.ltrim;
  rtrim = this.options.trim || this.options.rtrim;
  chars = this._.buf + chars;
  l = chars.length;
  i = 0;
  if (this.lines === 0 && 0xFEFF === chars.charCodeAt(0)) {
    i++;
  }
  while (i < l) {
    if (!end) {
      remainingBuffer = chars.substr(i, l - i);
      if ((!this.options.rowDelimiter && i + 3 > l) || (!this._.commenting && l - i < this.options.comment.length && this.options.comment.substr(0, l - i) === remainingBuffer) || (this.options.rowDelimiter && l - i < this._.rowDelimiterLength && this.options.rowDelimiter.some(function(rd) {
        return rd.substr(0, l - i) === remainingBuffer;
      })) || (this.options.rowDelimiter && this._.quoting && l - i < (this.options.quote.length + this._.rowDelimiterLength) && this.options.rowDelimiter.some((function(_this) {
        return function(rd) {
          return (_this.options.quote + rd).substr(0, l - i) === remainingBuffer;
        };
      })(this))) || (l - i <= this.options.delimiter.length && this.options.delimiter.substr(0, l - i) === remainingBuffer) || (l - i <= this.options.escape.length && this.options.escape.substr(0, l - i) === remainingBuffer)) {
        break;
      }
    }
    char = this._.nextChar ? this._.nextChar : chars.charAt(i);
    this._.nextChar = l > i + 1 ? chars.charAt(i + 1) : '';
    if (this.options.raw) {
      this._.rawBuf += char;
    }
    if (this.options.rowDelimiter == null) {
      nextCharPos = i;
      rowDelimiter = null;
      if (!this._.quoting && (char === '\n' || char === '\r')) {
        rowDelimiter = char;
        nextCharPos += 1;
      } else if (this._.quoting && char === this.options.quote && ((ref = this._.nextChar) === '\n' || ref === '\r')) {
        rowDelimiter = this._.nextChar;
        nextCharPos += 2;
        if (this.raw) {
          rawBuf += this._.nextChar;
        }
      }
      if (rowDelimiter) {
        if (rowDelimiter === '\r' && chars.charAt(nextCharPos) === '\n') {
          rowDelimiter += '\n';
        }
        this.options.rowDelimiter = [rowDelimiter];
        this._.rowDelimiterLength = rowDelimiter.length;
      }
    }
    if (!this._.commenting && char === this.options.escape) {
      escapeIsQuote = this.options.escape === this.options.quote;
      isEscape = this._.nextChar === this.options.escape;
      isQuote = this._.nextChar === this.options.quote;
      if (!(escapeIsQuote && (this._.field == null) && !this._.quoting) && (isEscape || isQuote)) {
        i++;
        char = this._.nextChar;
        this._.nextChar = chars.charAt(i + 1);
        if (this._.field == null) {
          this._.field = '';
        }
        this._.field += char;
        if (this.options.raw) {
          this._.rawBuf += char;
        }
        i++;
        continue;
      }
    }
    if (!this._.commenting && char === this.options.quote) {
      if (this._.quoting) {
        areNextCharsRowDelimiters = this.options.rowDelimiter && this.options.rowDelimiter.some(function(rd) {
          return chars.substr(i + 1, rd.length) === rd;
        });
        areNextCharsDelimiter = chars.substr(i + 1, this.options.delimiter.length) === this.options.delimiter;
        isNextCharAComment = this._.nextChar === this.options.comment;
        if (this._.nextChar && !areNextCharsRowDelimiters && !areNextCharsDelimiter && !isNextCharAComment) {
          if (this.options.relax) {
            this._.quoting = false;
            this._.field = "" + this.options.quote + this._.field;
          } else {
            return Error("Invalid closing quote at line " + (this.lines + 1) + "; found " + (JSON.stringify(this._.nextChar)) + " instead of delimiter " + (JSON.stringify(this.options.delimiter)));
          }
        } else {
          this._.quoting = false;
          this._.closingQuote = this.options.quote.length;
          i++;
          if (end && i === l) {
            this._.line.push(auto_parse(this._.field || ''));
            this._.field = null;
          }
          continue;
        }
      } else if (!this._.field) {
        this._.quoting = true;
        i++;
        continue;
      } else if ((this._.field != null) && !this.options.relax) {
        return Error("Invalid opening quote at line " + (this.lines + 1));
      }
    }
    isRowDelimiter = this.options.rowDelimiter && this.options.rowDelimiter.some(function(rd) {
      return chars.substr(i, rd.length) === rd;
    });
    if (isRowDelimiter || (end && i === l - 1)) {
      this.lines++;
    }
    wasCommenting = false;
    if (!this._.commenting && !this._.quoting && this.options.comment && chars.substr(i, this.options.comment.length) === this.options.comment) {
      this._.commenting = true;
    } else if (this._.commenting && isRowDelimiter) {
      wasCommenting = true;
      this._.commenting = false;
    }
    isDelimiter = chars.substr(i, this.options.delimiter.length) === this.options.delimiter;
    if (!this._.commenting && !this._.quoting && (isDelimiter || isRowDelimiter)) {
      if (isRowDelimiter) {
        isRowDelimiterLength = this.options.rowDelimiter.filter(function(rd) {
          return chars.substr(i, rd.length) === rd;
        })[0].length;
      }
      if (isRowDelimiter && this._.line.length === 0 && (this._.field == null)) {
        if (wasCommenting || this.options.skip_empty_lines) {
          i += isRowDelimiterLength;
          this._.nextChar = chars.charAt(i);
          continue;
        }
      }
      if (rtrim) {
        if (!this._.closingQuote) {
          this._.field = (ref1 = this._.field) != null ? ref1.trimRight() : void 0;
        }
      }
      this._.line.push(auto_parse(this._.field || ''));
      this._.closingQuote = 0;
      this._.field = null;
      if (isDelimiter) {
        i += this.options.delimiter.length;
        this._.nextChar = chars.charAt(i);
        if (end && !this._.nextChar) {
          isRowDelimiter = true;
          this._.line.push('');
        }
      }
      if (isRowDelimiter) {
        err = this.__push(this._.line);
        if (err) {
          return err;
        }
        this._.line = [];
        i += isRowDelimiterLength;
        this._.nextChar = chars.charAt(i);
        continue;
      }
    } else if (!this._.commenting && !this._.quoting && (char === ' ' || char === '\t')) {
      if (this._.field == null) {
        this._.field = '';
      }
      if (!(ltrim && !this._.field)) {
        this._.field += char;
      }
      i++;
    } else if (!this._.commenting) {
      if (this._.field == null) {
        this._.field = '';
      }
      this._.field += char;
      i++;
    } else {
      i++;
    }
    if (!this._.commenting && ((ref2 = this._.field) != null ? ref2.length : void 0) > this.options.max_limit_on_data_read) {
      return Error("Delimiter not found in the file " + (JSON.stringify(this.options.delimiter)));
    }
    if (!this._.commenting && ((ref3 = this._.line) != null ? ref3.length : void 0) > this.options.max_limit_on_data_read) {
      return Error("Row delimiter not found in the file " + (JSON.stringify(this.options.rowDelimiter)));
    }
  }
  if (end) {
    if (this._.field != null) {
      if (rtrim) {
        if (!this._.closingQuote) {
          this._.field = (ref4 = this._.field) != null ? ref4.trimRight() : void 0;
        }
      }
      this._.line.push(auto_parse(this._.field || ''));
      this._.field = null;
    }
    if (((ref5 = this._.field) != null ? ref5.length : void 0) > this.options.max_limit_on_data_read) {
      return Error("Delimiter not found in the file " + (JSON.stringify(this.options.delimiter)));
    }
    if (l === 0) {
      this.lines++;
    }
    if (this._.line.length > this.options.max_limit_on_data_read) {
      return Error("Row delimiter not found in the file " + (JSON.stringify(this.options.rowDelimiter)));
    }
  }
  this._.buf = chars.substr(i);
  return null;
};
