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## Copyright (C) 2007-2013 David Bateman
##
## This file is part of Octave.
##
## Octave 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.
##
## Octave 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 Octave; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{entries} =} gzip (@var{files})
## @deftypefnx {Function File} {@var{entries} =} gzip (@var{files}, @var{outdir})
## Compress the list of files and/or directories specified in @var{files}.
## Each file is compressed separately and a new file with a @file{".gz"}
## extension is created. The original files are not modified. Existing
## compressed files are silently overwritten. If @var{outdir} is defined the
## compressed files are placed in this directory.
## @seealso{gunzip, bzip2, zip, tar}
## @end deftypefn
function entries = gzip (varargin)
if (nargin != 1 && nargin != 2) || (nargout > 1)
print_usage ();
endif
if (nargout == 0)
__xzip__ ("gzip", "gz", "gzip -r %s", varargin{:});
else
entries = __xzip__ ("gzip", "gz", "gzip -r %s", varargin{:});
endif
endfunction
%!xtest
%! ## test gzip together with gunzip
%! unwind_protect
%! filename = tmpnam;
%! dummy = 1;
%! save (filename, "dummy");
%! dirname = tmpnam;
%! mkdir (dirname);
%! entry = gzip (filename, dirname);
%! [path, basename, extension] = fileparts (filename);
%! if (! strcmp (entry, [dirname, filesep, basename, extension, ".gz"]))
%! error ("gzipped file does not match expected name!");
%! endif
%! if (! exist (entry, "file"))
%! error ("gzipped file cannot be found!");
%! endif
%! gunzip (entry);
%! if (system (sprintf ("diff %s %s%c%s%s", filename, dirname, filesep,
%! basename, extension)))
%! error ("unzipped file not equal to original file!");
%! end
%! unwind_protect_cleanup
%! delete (filename);
%! delete ([dirname, filesep, basename, extension]);
%! rmdir (dirname);
%! end_unwind_protect
%!error gzip ()
%!error gzip ("1", "2", "3")
%!error <output directory does not exist> gzip ("1", tmpnam)
%!error <FILES must be a character array or cellstr> gzip (1)
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