Current File : //home/tradevaly/www/node_modules/restructure/src/String.js

// Generated by CoffeeScript 1.7.1
(function() {
  var NumberT, StringT, utils;

  NumberT = require('./Number').Number;

  utils = require('./utils');

  StringT = (function() {
    function StringT(length, encoding) {
      this.length = length;
      this.encoding = encoding != null ? encoding : 'ascii';
    }

    StringT.prototype.decode = function(stream, parent) {
      var buffer, encoding, length, pos, string;
      length = (function() {
        if (this.length != null) {
          return utils.resolveLength(this.length, stream, parent);
        } else {
          buffer = stream.buffer, length = stream.length, pos = stream.pos;
          while (pos < length && buffer[pos] !== 0x00) {
            ++pos;
          }
          return pos - stream.pos;
        }
      }).call(this);
      encoding = this.encoding;
      if (typeof encoding === 'function') {
        encoding = encoding.call(parent, parent) || 'ascii';
      }
      string = stream.readString(length, encoding);
      if ((this.length == null) && stream.pos < stream.length) {
        stream.pos++;
      }
      return string;
    };

    StringT.prototype.size = function(val, parent) {
      var encoding, size;
      if (!val) {
        return utils.resolveLength(this.length, null, parent);
      }
      encoding = this.encoding;
      if (typeof encoding === 'function') {
        encoding = encoding.call(parent != null ? parent.val : void 0, parent != null ? parent.val : void 0) || 'ascii';
      }
      if (encoding === 'utf16be') {
        encoding = 'utf16le';
      }
      size = Buffer.byteLength(val, encoding);
      if (this.length instanceof NumberT) {
        size += this.length.size();
      }
      if (this.length == null) {
        size++;
      }
      return size;
    };

    StringT.prototype.encode = function(stream, val, parent) {
      var encoding;
      encoding = this.encoding;
      if (typeof encoding === 'function') {
        encoding = encoding.call(parent != null ? parent.val : void 0, parent != null ? parent.val : void 0) || 'ascii';
      }
      if (this.length instanceof NumberT) {
        this.length.encode(stream, Buffer.byteLength(val, encoding));
      }
      stream.writeString(val, encoding);
      if (this.length == null) {
        return stream.writeUInt8(0x00);
      }
    };

    return StringT;

  })();

  module.exports = StringT;

}).call(this);