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1 ## Copyright (C) 2004 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} dir (@var{directory}) |
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22 ## @deftypefnx {Function File} {[@var{list}] =} dir (@var{directory}) |
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23 ## Display file listing for directory @var{directory}. If a return |
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24 ## value is requested, return a structure array with the fields |
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25 ## |
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26 ## @example |
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27 ## @group |
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28 ## name |
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29 ## bytes |
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30 ## date |
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31 ## isdir |
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32 ## statinfo |
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33 ## @end group |
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34 ## @end example |
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35 ## |
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36 ## @noindent |
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37 ## in which @code{statinfo} is the structure returned from @code{stat}. |
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38 ## |
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39 ## If @var{directory} is not a directory, return information about the |
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40 ## named @var{filename}. @var{directory} may be a list of directories |
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41 ## specified either by name or with wildcard characters (like * and ?) |
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42 ## which will be expanded with glob. |
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43 ## @seealso{ls, stat, readdir, glob, filesep} |
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44 ## @end deftypefn |
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45 |
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46 ## Author: jwe |
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47 |
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48 ## XXX FIXME XXX -- this is quite slow for large directories, so perhaps |
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49 ## it should be converted to C++. |
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50 |
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51 function retval = dir (file) |
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52 |
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53 if (nargin == 0) |
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54 file = "."; |
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55 elseif (nargin > 1) |
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56 usage ("dir (file)"); |
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57 endif |
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58 |
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59 ## Prep the retval. |
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60 info = struct (zeros (0, 1)); |
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61 |
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62 if (ischar (file)) |
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63 if (strcmp (file, "*")) |
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64 file = "."; |
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65 endif |
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66 if (strcmp (file, ".")) |
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67 flst = {"."}; |
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68 nf = 1; |
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69 else |
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70 flst = glob (file); |
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71 nf = length (flst); |
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72 endif |
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73 |
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74 ## Determine the file list for the case where a single directory is |
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75 ## specified. |
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76 if (nf == 1) |
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77 fn = flst{1}; |
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78 [st, err, msg] = lstat (fn); |
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79 if (err < 0) |
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80 warning ("dir: `lstat (%s)' failed: %s", fn, msg); |
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81 nf = 0; |
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82 elseif (st.modestr(1) == "d") |
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83 flst = readdir (flst{1}); |
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84 nf = length (flst); |
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85 for i = 1:nf |
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86 flst{i} = fullfile (fn, flst{i}); |
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87 endfor |
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88 endif |
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89 endif |
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90 |
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91 if (length (flst) > 0) |
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92 ## Collect results. |
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93 for i = nf:-1:1 |
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94 fn = flst{i}; |
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95 [st, err, msg] = lstat (fn); |
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96 if (err < 0) |
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97 warning ("dir: `lstat (%s)' failed: %s", fn, msg); |
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98 else |
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99 [dummy, fn, ext] = fileparts (fn); |
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100 fn = strcat (fn, ext); |
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101 info(i).name = fn; |
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102 info(i).date = strftime ("%d-%b-%Y %T", localtime (st.mtime)); |
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103 info(i).bytes = st.size; |
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104 info(i).isdir = st.modestr(1) == "d"; |
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105 info(i).statinfo = st; |
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106 endif |
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107 endfor |
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108 endif |
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109 |
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110 else |
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111 error ("dir: expecting directory or filename to be a char array"); |
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112 endif |
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113 |
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114 ## Return the output arguments. |
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115 if (nargout > 0) |
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116 ## Return the requested structure. |
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117 retval = info; |
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118 elseif (length (info) > 0) |
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119 ## Print the structure to the screen. |
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120 printf ("%s", list_in_columns ({info.name})); |
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121 else |
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122 warning ("dir: nonexistent file `%s'", file); |
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123 endif |
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124 |
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125 endfunction |
