| Current File : //usr/share/slsh/zlib.sl |
% -*- mode: slang; mode: fold -*-
% Copyright (C) 2012-2017,2018 John E. Davis
%
% This file is part of the S-Lang Library and may be distributed under the
% terms of the GNU General Public License. See the file COPYING for
% more information.
%---------------------------------------------------------------------------
import ("zlib");
%{{{ Deflate Object and methods
private define deflate_method ()
{
if (_NARGS != 2)
{
_pop_n (_NARGS);
usage (".deflate(str [;flush=val])");
}
variable z, b;
(z, b) = ();
return _zlib_deflate (z.zobj, b, qualifier("flush", ZLIB_NO_FLUSH));
}
private define def_reset_method (z)
{
_zlib_deflate_reset (z.zobj);
}
private define def_flush_method ()
{
variable z, flush = ZLIB_FINISH;
switch (_NARGS)
{
case 2:
(z, flush) = ();
}
{
case 1:
z = ();
}
{
_pop_n (_NARGS);
usage (".flush ([val]); Default is ZLIB_FINISH");
}
return _zlib_deflate_flush (z.zobj, flush);
}
private variable Deflate_Object = struct
{
zobj,
deflate = &deflate_method,
reset = &def_reset_method,
flush = &def_flush_method,
};
define zlib_deflate_new ()
{
variable z = @Deflate_Object;
z.zobj = _zlib_deflate_new (qualifier ("level", ZLIB_DEFAULT_COMPRESSION),
qualifier ("method", ZLIB_DEFLATED),
qualifier ("wbits", 15),
qualifier ("memlevel", 8),
qualifier ("strategy", ZLIB_DEFAULT_STRATEGY));
return z;
}
%}}}
%{{{ Inflate Object and methods
private define inflate_method ()
{
if (_NARGS != 2)
{
_pop_n (_NARGS);
usage (".inflate(str [;flush=val])");
}
variable z, b;
(z, b) = ();
return _zlib_inflate (z.zobj, b, qualifier("flush", ZLIB_NO_FLUSH));
}
private define inf_reset_method (z)
{
_zlib_inflate_reset (z.zobj);
}
private define inf_flush_method ()
{
variable z, flush = ZLIB_FINISH;
switch (_NARGS)
{
case 2:
(z, flush) = ();
}
{
case 1:
z = ();
}
{
_pop_n (_NARGS);
usage (".flush ([val]); Default is ZLIB_FINISH");
}
return _zlib_inflate_flush (z.zobj, flush);
}
private variable Inflate_Object = struct
{
zobj,
inflate = &inflate_method,
reset = &inf_reset_method,
flush = &inf_flush_method,
};
define zlib_inflate_new ()
{
variable z = @Inflate_Object;
z.zobj = _zlib_inflate_new (qualifier ("wbits", 15));
return z;
}
%}}}
define zlib_deflate ()
{
if (_NARGS != 1)
{
usage ("zstr = zlib_deflate (str [;qualifiers])\n"
+ " qualifiers:\n"
+ " level=val, method=val, wbits=val, memlevel=val, strategy=val");
}
variable bstr = ();
variable z = zlib_deflate_new (;; __qualifiers);
return _zlib_deflate (z.zobj, bstr, ZLIB_FINISH);
}
define zlib_inflate ()
{
if (_NARGS != 1)
{
usage ("str = zlib_inflate (zstr [;wbits=val])");
}
variable zstr = ();
variable z = zlib_inflate_new (;; __qualifiers);
return _zlib_inflate (z.zobj, zstr, ZLIB_FINISH);
}