# All files / node_modules/upng-js/node_modules/pako/lib/zlib zstream.js

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    18x
     'use strict';

    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
    //
    // This software is provided 'as-is', without any express or implied
    // warranty. In no event will the authors be held liable for any damages
    // arising from the use of this software.
    //
    // Permission is granted to anyone to use this software for any purpose,
    // including commercial applications, and to alter it and redistribute it
    // freely, subject to the following restrictions:
    //
    // 1. The origin of this software must not be misrepresented; you must not
    //   claim that you wrote the original software. If you use this software
    //   in a product, an acknowledgment in the product documentation would be
    //   appreciated but is not required.
    // 2. Altered source versions must be plainly marked as such, and must not be
    //   misrepresented as being the original software.
    // 3. This notice may not be removed or altered from any source distribution.

    function ZStream() {
      /* next input byte */
      this.input = null; // JS specific, because we have no pointers
      this.next_in = 0;
      /* number of bytes available at input */
      this.avail_in = 0;
      /* total number of input bytes read so far */
      this.total_in = 0;
      /* next output byte should be put there */
      this.output = null; // JS specific, because we have no pointers
      this.next_out = 0;
      /* remaining free space at output */
      this.avail_out = 0;
      /* total number of bytes output so far */
      this.total_out = 0;
      /* last error message, NULL if no error */
      this.msg = ''/*Z_NULL*/;
      /* not visible by applications */
      this.state = null;
      /* best guess about the data type: binary or text */
      this.data_type = 2/*Z_UNKNOWN*/;
      /* adler32 value of the uncompressed data */
      this.adler = 0;
    }

    module.exports = ZStream;