--- /dev/null
+## Copyright (C) 2005-2012 Bill Denney
+##
+## 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} {} savepath (@var{file})
+## Save the portion of the current function search path, that is
+## not set during Octave's initialization process, to @var{file}.
+## If @var{file} is omitted, @file{~/.octaverc} is used. If successful,
+## @code{savepath} returns 0.
+## @seealso{path, addpath, rmpath, genpath, pathdef, pathsep}
+## @end deftypefn
+
+## Author: Bill Denney <bill@givebillmoney.com>
+
+function varargout = savepath (file)
+
+ retval = 1;
+
+ beginstring = "## Begin savepath auto-created section, do not edit";
+ endstring = "## End savepath auto-created section";
+
+ if (nargin == 0)
+ file = fullfile ("~", ".octaverc");
+ endif
+
+ ## parse the file if it exists to see if we should replace a section
+ ## or create a section
+ startline = 0;
+ endline = 0;
+ filelines = {};
+ if (exist (file) == 2)
+ ## read in all lines of the file
+ [fid, msg] = fopen (file, "rt");
+ if (fid < 0)
+ error ("savepath: could not open file, %s: %s", file, msg);
+ endif
+ unwind_protect
+ linenum = 0;
+ while (linenum >= 0)
+ result = fgetl (fid);
+ if (isnumeric (result))
+ ## end at the end of file
+ linenum = -1;
+ else
+ linenum = linenum + 1;
+ filelines{linenum} = result;
+ ## find the first and last lines if they exist in the file
+ if (strcmp (result, beginstring))
+ startline = linenum;
+ elseif (strcmp (result, endstring))
+ endline = linenum;
+ endif
+ endif
+ endwhile
+ unwind_protect_cleanup
+ closeread = fclose (fid);
+ if (closeread < 0)
+ error ("savepath: could not close file after reading, %s",
+ file);
+ endif
+ end_unwind_protect
+ endif
+
+ if (startline > endline || (startline > 0 && endline == 0))
+ error ("savepath: unable to parse file, %s", file);
+ endif
+
+ ## put the current savepath lines into the file
+ if (isempty (filelines)
+ || (startline == 1 && endline == length (filelines)))
+ ## savepath is the entire file
+ pre = post = {};
+ elseif (endline == 0)
+ ## drop the savepath statements at the end of the file
+ pre = filelines;
+ post = {};
+ elseif (startline == 1)
+ pre = {};
+ post = filelines(endline+1:end);
+ elseif (endline == length (filelines))
+ pre = filelines(1:startline-1);
+ post = {};
+ else
+ ## insert in the middle
+ pre = filelines(1:startline-1);
+ post = filelines(endline+1:end);
+ endif
+
+ ## write the results
+ [fid, msg] = fopen (file, "wt");
+ if (fid < 0)
+ error ("savepath: unable to open file for writing, %s, %s", file, msg);
+ endif
+ unwind_protect
+ for i = 1:length (pre)
+ fprintf (fid, "%s\n", pre{i});
+ endfor
+
+ ## Remove the portion of the path defined via the command line
+ ## and/or the environment.
+ workingpath = parsepath (path);
+ command_line_path = parsepath (command_line_path ());
+ octave_path = parsepath (getenv ("OCTAVE_PATH"));
+ if (isempty (pathdef ()))
+ ## This occurs when running octave via run-octave. In this instance
+ ## the entire path is specified via the command line and pathdef()
+ ## is empty.
+ [tmp, n] = setdiff (workingpath, octave_path);
+ default_path = command_line_path;
+ else
+ [tmp, n] = setdiff (workingpath, union (command_line_path, octave_path));
+ default_path = parsepath (pathdef ());
+ endif
+ ## This is the path we'd like to preserve when octave is run.
+ path_to_preserve = workingpath (sort (n));
+
+ ## Determine the path to Octave's user and sytem wide pkgs.
+ [pkg_user, pkg_system] = pkg ("list");
+ pkg_user_path = cell (1, numel (pkg_user));
+ pkg_system_path = cell (1, numel (pkg_system));
+ for n = 1:numel(pkg_user)
+ pkg_user_path{n} = pkg_user{n}.archprefix;
+ endfor
+ for n = 1:numel(pkg_system)
+ pkg_system_path{n} = pkg_system{n}.archprefix;
+ endfor
+ pkg_path = union (pkg_user_path, pkg_system_path);
+
+ ## Rely on Octave's initialization to include the pkg path elements.
+ if (! isempty (pkg_path))
+ [tmp, n] = setdiff (path_to_preserve, strcat (pkg_path, ":"));
+ path_to_preserve = path_to_preserve (sort (n));
+ endif
+
+ ## Split the path to be saved into two groups. Those path elements that
+ ## belong at the beginning and those at the end.
+ if (! isempty (default_path))
+ n1 = strmatch (default_path{1}, path_to_preserve, "exact");
+ n2 = strmatch (default_path{end}, path_to_preserve, "exact");
+ n_middle = round (0.5*(n1+n2));
+ [tmp, n] = setdiff (path_to_preserve, default_path);
+ path_to_save = path_to_preserve (sort (n));
+ ## Remove pwd
+ path_to_save = path_to_save (! strcmpi (path_to_save,
+ strcat (".", pathsep)));
+ n = ones (size (path_to_save));
+ for m = 1:numel(path_to_save)
+ n(m) = strmatch (path_to_save{m}, path_to_preserve);
+ endfor
+ path_to_save_begin = path_to_save(n <= n_middle);
+ path_to_save_end = path_to_save(n > n_middle);
+ else
+ path_to_save_begin = path_to_preserve;
+ path_to_save_end = {};
+ endif
+ path_to_save_begin = cell2mat (path_to_save_begin);
+ path_to_save_end = cell2mat (path_to_save_end);
+
+ ## Use single quotes for PATH argument to avoid string escape
+ ## processing. Since we are using single quotes around the arg,
+ ## double any single quote characters found in the string.
+ fprintf (fid, "%s\n", beginstring);
+ if (! isempty (path_to_save_begin))
+ n = find (path_to_save_begin != pathsep, 1, "last");
+ fprintf (fid, " addpath ('%s', '-begin');\n",
+ strrep (path_to_save_begin(1:n), "'", "''"));
+ endif
+ if (! isempty (path_to_save_end))
+ n = find (path_to_save_end != pathsep, 1, "last");
+ fprintf (fid, " addpath ('%s', '-end');\n",
+ strrep (path_to_save_end(1:n), "'", "''"));
+ endif
+ fprintf (fid, "%s\n", endstring);
+
+ for i = 1:length (post)
+ fprintf (fid, "%s\n", post{i});
+ endfor
+ unwind_protect_cleanup
+ closeread = fclose (fid);
+ if (closeread < 0)
+ error ("savepath: could not close savefile after writing, %s", file);
+ elseif (nargin == 0)
+ warning ("savepath: current path saved to %s", file);
+ endif
+ end_unwind_protect
+
+ retval = 0;
+
+ if (nargout == 1)
+ varargout{1} = retval;
+ endif
+
+endfunction
+
+function path_elements = parsepath (p)
+ pat = sprintf ('([^%s]+[%s$])', pathsep, pathsep);
+ [~, ~, ~, path_elements] = regexpi (strcat (p, pathsep), pat);
+endfunction
+
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff