debian-control/lib/lineStream.js

Parse package control files from Debian

// Generated by CoffeeScript 2.4.1
(function() {
  // lineStream.coffee
  // Copyright 2019 Patrick Meade.

  // This program is free software: you can redistribute it and/or modify
  // it under the terms of the GNU General Public License as published by
  // the Free Software Foundation, either version 3 of the License, or
  // (at your option) any later version.

  // This program is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  // GNU General Public License for more details.

  // You should have received a copy of the GNU General Public License
  // along with this program.  If not, see <https://www.gnu.org/licenses/>.
  //----------------------------------------------------------------------
  var Transform;

  ({Transform} = require("stream"));

  exports.LineStream = class LineStream extends Transform {
    constructor(options) {
      super(options || {});
      this.buffer = Buffer.alloc(0);
    }

    _transform(chunk, encoding, callback) {
      var nextLineEnding;
      this.buffer = Buffer.concat([this.buffer, chunk]);
      while (true) {
        nextLineEnding = this.buffer.indexOf("\n");
        if (nextLineEnding >= 0) {
          this.push(this.buffer.slice(0, nextLineEnding + 1));
          this.buffer = this.buffer.slice(nextLineEnding + 1);
        } else {
          break;
        }
      }
      return callback();
    }

    _flush(callback) {
      return callback(null, this.buffer);
    }

  };

  //----------------------------------------------------------------------
// end of lineStream.coffee

}).call(this);