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1 ## Copyright (C) 2005 S�ren Hauberg |
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2 ## |
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3 ## This program is free software; you can redistribute it and/or modify |
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4 ## it under the terms of the GNU General Public License as published by |
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5 ## the Free Software Foundation; either version 2 of the License, or |
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6 ## (at your option) any later version. |
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7 ## |
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8 ## This program is distributed in the hope that it will be useful, |
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9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 ## GNU General Public License for more details. |
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12 ## |
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13 ## You should have received a copy of the GNU General Public License |
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14 ## along with this program; if not, write to the Free Software |
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15 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 ## -*- texinfo -*- |
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18 ## @deftypefn {Function File} tar (@var{filename}, @var{files}) |
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19 ## @deftypefnx{Function File} tar (@var{filename}, @var{files}, @var{root}) |
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20 ## @deftypefnx{Function File} @var{entries} = tar (...) |
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21 ## Packs the files listed in @var{files} into @var{filename} using |
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22 ## the @code{tar} program. @var{files} must either be a string or a cell |
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23 ## array of strings containing the files to be packed. The extension of |
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24 ## @var{filename} determines if the tar-file is also to be compressed |
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25 ## (if no extension is present @code{.tar} will be appended to @var{filename}) |
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26 ## @table @asis |
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27 ## @item @code{.tar} |
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28 ## No compression. |
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29 ## @item @code{.tar.gz} or @code{.tgz} |
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30 ## The tar-file will be compressed using @code{gzip}. |
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31 ## @item @code{tar.bz}, @code{tar.bz2}, @code{tbz}, or @code{tbz2} |
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32 ## The tar-file will be compressed using @code{bzip2}. |
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33 ## @end table |
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34 ## The optional argument @var{root} changes the relative path of @var{files} |
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35 ## from the current directory. |
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36 ## |
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37 ## If an output argument is requested the filename entries in the archive |
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38 ## is returned. |
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39 ## |
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40 ## @end deftypefn |
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41 ## @seealso{untar, gzip, gunzip, zip, unzip} |
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42 |
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43 ## Author: S�ren Hauberg <hauberg at gmail dot com> |
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44 |
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45 function entries = tar(filename, files, root) |
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46 if (nargin < 2 || nargin > 3) |
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47 print_usage("tar"); |
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48 elseif (nargin == 2) |
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49 root = "."; |
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50 endif |
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51 |
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52 supported_extensions = {"tar", "tar.gz", "tgz", "tar.bz", "tar.bz2", "tbz", "tbz2"}; |
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53 |
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54 ## Test type of input |
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55 if (ischar(files)) |
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56 files = {files}; |
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57 endif |
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58 if (!ischar(filename) || !iscellstr(files) || !ischar(root)) |
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59 error("All arguments must be strings.\n"); |
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60 endif |
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61 |
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62 ## Get extension of filename |
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63 dots = find(filename == "."); |
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64 for dot = dots |
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65 curext = filename(dot+1:end); |
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66 if (any(strcmp(curext, supported_extensions))) |
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67 ext = curext; |
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68 break; |
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69 endif |
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70 endfor |
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71 |
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72 ## If no extension was found default to "tar" |
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73 if (!exist("ext", "var")) |
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74 filename = sprintf("%s.tar", filename); |
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75 ext = "tar"; |
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76 endif |
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77 |
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78 ## Determine which flags to use with tar |
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79 switch (ext) |
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80 case {"tar"} flag = ""; |
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81 case {"tar.gz", "tgz"} flag = "z"; |
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82 case {"tar.bz", "tar.bz2", "tbz", "tbz2"} flag = "j"; |
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83 endswitch |
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84 |
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85 ## Call tar |
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86 [output, status] = system(["tar -" flag "cvf " filename " -C " root sprintf(" %s", files{:})]); |
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87 if (status != 0) |
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88 error("tar returned the following error: %s\n", output); |
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89 endif |
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90 |
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91 if (nargout) |
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92 entries = split(output(1:end-1), "\n"); |
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93 endif |
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94 endfunction |
