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doc: Expand and edit documentation for memoization (bug #60860)
author Arun Giridhar <arungiridhar@gmail.com>
date Fri, 30 Sep 2022 06:38:59 -0400
parents 796f54d4ddbf
children 597f3ee61a48
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2005-2022 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {@var{filelist} =} tar (@var{tarfile}, @var{files})
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28 ## @deftypefnx {} {@var{filelist} =} tar (@var{tarfile}, @var{files}, @var{rootdir})
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29 ## Pack the list of files and directories specified in @var{files} into the
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30 ## TAR archive @var{tarfile}.
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31 ##
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32 ## @var{files} is a character array or cell array of strings. Shell wildcards
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33 ## in the filename such as @samp{*} or @samp{?} are accepted and expanded.
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34 ## Directories are recursively traversed and all files are added to the
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35 ## archive.
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36 ##
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37 ## If @var{rootdir} is defined then any files without absolute pathnames are
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38 ## located relative to @var{rootdir} rather than the current directory.
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39 ##
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40 ## The optional output @var{filelist} is a list of the files that were included
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41 ## in the archive.
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42 ## @seealso{untar, unpack, bzip2, gzip, zip}
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43 ## @end deftypefn
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44
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45 function filelist = tar (tarfile, files, rootdir = ".")
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46
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47 if (nargin < 2)
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48 print_usage ();
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49 endif
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50
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51 if (! ischar (tarfile))
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52 error ("tar: TARFILE must be a string");
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53 elseif (ischar (files))
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54 files = cellstr (files);
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55 elseif (! iscellstr (files))
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56 error ("tar: FILES must be a character array or cellstr");
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57 endif
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58
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59 rootdir = tilde_expand (rootdir);
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60
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61 tarfile = make_absolute_filename (tarfile);
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62
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63 if (ispc)
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64 ## Change tarfile into a mingw style acceptable for tar
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65 tarfile = __w2mpth__ (tarfile);
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66 endif
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67
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68 ## BSD tar emits progress on stderr
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69 if (tar_is_bsd ())
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70 cmd = sprintf ("tar cvf %s -C %s %s 2>&1",
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71 tarfile, rootdir, sprintf (" '%s'", files{:}));
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72 else
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73 cmd = sprintf ("tar cvf %s -C %s %s",
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74 tarfile, rootdir, sprintf (" %s", files{:}));
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75 endif
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76
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77 ## Save and restore the TAR_OPTIONS environment variable used by GNU tar.
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78 tar_options_env = getenv ("TAR_OPTIONS");
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79 unwind_protect
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80 unsetenv ("TAR_OPTIONS");
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81 [status, output] = system (cmd);
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82 unwind_protect_cleanup
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83 if (! isempty (tar_options_env))
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84 setenv ("TAR_OPTIONS", tar_options_env);
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85 endif
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86 end_unwind_protect
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87
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88 if (status)
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89 error ("tar: tar exited with status = %d", status);
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90 endif
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91
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92 if (nargout > 0)
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93 filelist = ostrsplit (output, "\r\n", true);
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94 filelist = filelist';
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95
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96 ## BSD tar emits file actions in the first 2 columns
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97 if (tar_is_bsd ())
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98 filelist = cellfun (@(x) x(3:end), filelist, 'UniformOutput', false);
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99 endif
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100 endif
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101
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102 endfunction
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103
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104
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105 ## FIXME: This test may fail if the tar command is not installed. If this
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106 ## test fails, it might be better to change it into a testif with a
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107 ## runtime condition on the tar program.
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108 %!test
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109 %! ## test tar together with untar
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110 %! orig_dir = pwd ();
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111 %! unwind_protect
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112 %! dirname = tarname = outdir = "";
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113 %! dirname = tempname ();
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114 %! assert (mkdir (dirname));
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115 %! chdir (dirname);
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116 %! dirname2 = "dir2";
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117 %! assert (mkdir (dirname2));
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118 %! fname1 = "file1";
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119 %! fname2 = fullfile (dirname2, "file2");
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120 %! fid = fopen (fname1, "wt");
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121 %! assert (fid >= 0);
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122 %! fdisp (fid, "Hello World");
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123 %! fclose (fid);
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124 %! fid = fopen (fname2, "wt");
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125 %! assert (fid >= 0);
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126 %! fdisp (fid, "Goodbye World");
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John W. Eaton <jwe@octave.org>
parents: 19535
diff changeset
127 %! fclose (fid);
19925
ee7159d9a330 tar.m: Re-code BIST test restore working directory even when test fails (bug #44007).
Rik <rik@octave.org>
parents: 19697
diff changeset
128 %! tarname = [tempname() ".tar"];
19258
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
129 %! filelist = tar (tarname, {dirname2, fname1});
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
130 %! if (! strcmp (filelist{3}, fname1))
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
131 %! error ("tar file contents does not match expected file");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
132 %! endif
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
133 %! if (! exist (tarname, "file"))
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
134 %! error ("tar archive file cannot be found!");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
135 %! endif
28892
3cac3ceb9629 maint: Use coding style with parentheses after function name to distinguish from a variable.
Rik <rik@octave.org>
parents: 28886
diff changeset
136 %! outdir = tempname ();
19258
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
137 %! untar (tarname, outdir);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
138 %! fid = fopen (fullfile (outdir, fname1), "rt");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
139 %! assert (fid >= 0);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
140 %! str = fgetl (fid);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
141 %! fclose (fid);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
142 %! assert (str, "Hello World");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
143 %! fid = fopen (fullfile (outdir, fname2), "rt");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
144 %! assert (fid >= 0);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
145 %! str = fgetl (fid);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
146 %! fclose (fid);
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
147 %! assert (str, "Goodbye World");
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
148 %! unwind_protect_cleanup
19925
ee7159d9a330 tar.m: Re-code BIST test restore working directory even when test fails (bug #44007).
Rik <rik@octave.org>
parents: 19697
diff changeset
149 %! chdir (orig_dir);
19927
0cc365dada52 Allow tar, unpack, and zip to run on Windows with CR/NL EOL.
Rik <rik@octave.org>
parents: 19925
diff changeset
150 %! unlink (tarname);
19258
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
151 %! confirm_recursive_rmdir (false, "local");
28087
9cb04a9e81ec rmdir: throw an error if operation fails and nargout == 0 (bug #57830).
Rik <rik@octave.org>
parents: 27978
diff changeset
152 %! sts = rmdir (dirname, "s");
9cb04a9e81ec rmdir: throw an error if operation fails and nargout == 0 (bug #57830).
Rik <rik@octave.org>
parents: 27978
diff changeset
153 %! sts = rmdir (outdir, "s");
19258
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
154 %! end_unwind_protect
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
155
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
156 ## Test input validation
28886
d8318c12d903 test: remove unnecessary BIST tests in m-files checking for excessive number of inputs.
Rik <rik@octave.org>
parents: 28789
diff changeset
157 %!error <Invalid call> tar ()
d8318c12d903 test: remove unnecessary BIST tests in m-files checking for excessive number of inputs.
Rik <rik@octave.org>
parents: 28789
diff changeset
158 %!error <Invalid call> tar (1)
19258
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
159 %!error <TARFILE must be a string> tar (1, "foobar")
a4e993343e93 Overhaul the archive family (bzip2, gzip, zip, tar) of m-files.
Rik <rik@octave.org>
parents: 17744
diff changeset
160 %!error <FILES must be a character array or cellstr> tar ("foobar", 1)