octave-lyh: scripts/path/pathdef.m annotate

annotate scripts/path/pathdef.m @ 10491:077fef5da460

optimize null assignment with bool masks

author	Jaroslav Hajek <highegg@gmail.com>
date	Tue, 06 Apr 2010 15:38:56 +0200
parents	9f25290a35e8
children	95c3e38098bf

rev	line source
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	1 ## Copyright (C) 2005, 2006, 2007, 2008, 2009 Bill Denney
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	2 ## Copyright (C) 2007, 2008, 2009 Ben Abbott
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	3 ##
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	4 ## This file is part of Octave.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	5 ##
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	6 ## Octave is free software; you can redistribute it and/or modify it
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	7 ## under the terms of the GNU General Public License as published by
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	8 ## the Free Software Foundation; either version 3 of the License, or (at
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	9 ## your option) any later version.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	10 ##
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	11 ## Octave is distributed in the hope that it will be useful, but
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	14 ## General Public License for more details.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	15 ##
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	16 ## You should have received a copy of the GNU General Public License
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	17 ## along with Octave; see the file COPYING. If not, see
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	18 ## <http://www.gnu.org/licenses/>.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	19
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	20 ## -- texinfo --
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	21 ## @deftypefn {Function File} {@var{val} =} pathdef ()
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	22 ## Return the default path for Octave.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	23 ## The path information is extracted from one of three sources.
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	24 ## In order of preference, those are;
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	25 ##
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	26 ## @enumerate
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	27 ## @item @file{~/.octaverc}
9038 fca0dc2fb042 Cleanup documentation files stmt.texi and func.texi Rik <rdrider0-list@yahoo.com> parents: 7393 diff changeset	28 ## @item @file{<octave-home>/@dots{}/<version>/m/startup/octaverc}
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	29 ## @item Octave's path prior to changes by any octaverc.
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	30 ## @end enumerate
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	31 ## @seealso{path, addpath, rmpath, genpath, savepath, pathsep}
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	32 ## @end deftypefn
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	33
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	34 function val = pathdef ()
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	35
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	36 ## Locate the site octaverc file.
7391 f071480b7eac [project @ 2008-01-17 07:50:33 by jwe] jwe parents: 7388 diff changeset	37 pathdir = octave_config_info ("localstartupfiledir");
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	38 site_octaverc = fullfile (pathdir, "octaverc");
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	39
7393 a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	40 ## Locate the user ~\.octaverc file.
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	41 user_octaverc = fullfile ("~", ".octaverc");
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	42
7391 f071480b7eac [project @ 2008-01-17 07:50:33 by jwe] jwe parents: 7388 diff changeset	43 ## Extract the specified paths from the site and user octaverc"s.
7393 a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	44 site_path = __extractpath__ (site_octaverc);
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	45 if (exist (user_octaverc, "file"))
7393 a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	46 user_path = __extractpath__ (user_octaverc);
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	47 else
7393 a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	48 user_path = "";
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	49 endif
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	50
7392 17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	51 ## A path definition in the user octaverc has precedence over the
17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	52 ## site.
17f2cdb5232e [project @ 2008-01-17 08:14:32 by jwe] jwe parents: 7391 diff changeset	53
7393 a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	54 if (! isempty (user_path))
a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	55 val = user_path;
a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	56 elseif (! isempty (site_path))
a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	57 val = site_path;
a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	58 else
a2e8cfe2fd17 [project @ 2008-01-17 08:46:54 by jwe] jwe parents: 7392 diff changeset	59 val = __pathorig__ ();
7388 0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	60 endif
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	61
0e1ccfe1bf91 [project @ 2008-01-16 06:31:23 by jwe] jwe parents: diff changeset	62 endfunction
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	63
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	64 ## Extact the path information from the script/function @var{file},
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	65 ## created by @file{savepath.m}. If @var{file} is omitted,
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	66 ## @file{~/.octaverc} is used. If successful, @code{__extractpath__}
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	67 ## returns the path specified in @var{file}.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	68
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	69 ## Author: Ben Abbott <bpabbott@mac.com>
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	70
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	71 function specifiedpath = __extractpath__ (savefile)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	72
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	73 ## The majority of this code was borrowed from savepath.m.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	74 ## FIXME -- is there some way to share the common parts instead of
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	75 ## duplicating?
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	76
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	77 beginstring = "## Begin savepath auto-created section, do not edit";
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	78 endstring = "## End savepath auto-created section";
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	79
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	80 if (nargin == 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	81 savefile = tilde_expand ("~/.octaverc");
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	82 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	83
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	84 ## Parse the file if it exists to see if we should replace a section
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	85 ## or create a section.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	86 startline = 0;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	87 endline = 0;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	88 filelines = {};
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	89 if (exist (savefile) == 2)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	90 ## read in all lines of the file
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	91 [fid, msg] = fopen (savefile, "rt");
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	92 if (fid < 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	93 error ("__extractpath__: could not open savefile, %s: %s", savefile, msg);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	94 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	95 unwind_protect
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	96 linenum = 0;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	97 while (linenum >= 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	98 result = fgetl (fid);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	99 if (isnumeric (result))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	100 ## End at the end of file.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	101 linenum = -1;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	102 else
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	103 linenum++;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	104 filelines{linenum} = result;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	105 ## Find the first and last lines if they exist in the file.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	106 if (strcmp (result, beginstring))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	107 startline = linenum + 1;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	108 elseif (strcmp (result, endstring))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	109 endline = linenum - 1;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	110 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	111 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	112 endwhile
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	113 unwind_protect_cleanup
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	114 closeread = fclose (fid);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	115 if (closeread < 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	116 error ("savepath: could not close savefile after reading, %s",
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	117 savefile);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	118 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	119 end_unwind_protect
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	120 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	121
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	122 ## Extract the path specifiation.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	123 if (startline > endline \|\| (startline > 0 && endline == 0))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	124 error ("savepath: unable to parse file, %s", savefile);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	125 elseif (startline > 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	126 ## Undo doubling of single quote characters performed by savepath.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	127 specifiedpath = strrep (regexprep (cstrcat (filelines(startline:endline){:}),
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	128 " path \$'(.)'\$; ", "$1"),
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	129 "''", "'");
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	130 else
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	131 specifiedpath = "";
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	132 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	133
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	134 endfunction

Mercurial > hg > octave-lyh

annotate scripts/path/pathdef.m @ 10491:077fef5da460