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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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661
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23 /* |
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24 |
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25 The functions listed below were adapted from a similar functions |
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26 from GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 |
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27 Free Software Foundation, Inc. |
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28 |
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29 polite_directory_format absolute_pathname |
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30 base_pathname |
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31 make_absolute pathname_backup |
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32 change_to_directory get_working_directory |
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33 |
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34 */ |
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35 |
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36 #ifdef HAVE_CONFIG_H |
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1192
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37 #include <config.h> |
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38 #endif |
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39 |
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40 #include <cerrno> |
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41 #include <cstdio> |
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42 #include <cstddef> |
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43 #include <cstdlib> |
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44 #include <cstring> |
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45 |
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1728
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46 #include <string> |
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47 |
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48 #include <strstream.h> |
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49 |
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1832
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50 #ifdef HAVE_UNISTD_H |
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2442
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51 #ifdef HAVE_SYS_TYPES_H |
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1832
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52 #include <sys/types.h> |
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2442
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53 #endif |
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1832
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54 #include <unistd.h> |
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55 #endif |
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56 |
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57 #include "oct-glob.h" |
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1755
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58 #include "str-vec.h" |
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59 |
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1355
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60 #include "defun.h" |
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1781
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61 #include "dir-ops.h" |
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1355
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62 #include "dirfns.h" |
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63 #include "error.h" |
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1766
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64 #include "file-ops.h" |
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1402
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65 #include "gripes.h" |
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1389
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66 #include "help.h" |
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1750
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67 #include "oct-obj.h" |
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1355
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68 #include "pager.h" |
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69 #include "pathlen.h" |
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70 #include "procstream.h" |
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1750
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71 #include "pt-plot.h" |
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1355
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72 #include "sysdep.h" |
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1750
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73 #include "toplev.h" |
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1449
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74 #include "unwind-prot.h" |
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523
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75 #include "utils.h" |
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1742
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76 #include "variables.h" |
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77 |
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2196
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78 // The current working directory. |
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2204
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79 string Vcurrent_directory; |
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2196
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80 |
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81 // Non-zero means follow symbolic links that point to directories just |
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82 // as if they are real directories. |
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83 static int follow_symbolic_links = 1; |
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84 |
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85 // Non-zero means that pwd always give verbatim directory, regardless |
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86 // of symbolic link following. |
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87 static int verbatim_pwd = 1; |
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88 |
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661
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89 // Remove the last N directories from PATH. Do not PATH blank. |
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90 // PATH must contain enough space for MAXPATHLEN characters. |
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91 |
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92 static void |
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93 pathname_backup (string& path, int n) |
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94 { |
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95 if (path.empty ()) |
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96 return; |
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97 |
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98 size_t i = path.length () - 1; |
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99 |
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100 while (n--) |
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101 { |
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1755
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102 while (path[i] == '/' && i > 0) |
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103 i--; |
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104 |
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1755
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105 while (path[i] != '/' && i > 0) |
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106 i--; |
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107 |
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108 i++; |
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109 } |
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110 |
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111 path.resize (i); |
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112 } |
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113 |
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661
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114 // Return a pretty pathname. If the first part of the pathname is the |
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115 // same as $HOME, then replace that with `~'. |
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116 |
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117 string |
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118 polite_directory_format (const string& name) |
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119 { |
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1755
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120 string retval; |
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121 |
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2204
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122 size_t len = Vhome_directory.length (); |
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123 |
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2204
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124 if (len > 1 && Vhome_directory.compare (name, 0, len) == 0 |
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125 && (name.length () == len || name[len] == '/')) |
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126 { |
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127 retval = "~"; |
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128 retval.append (name.substr (len)); |
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129 } |
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130 else |
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1755
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131 retval = name; |
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132 |
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133 return retval; |
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134 } |
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135 |
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661
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136 // Return 1 if STRING contains an absolute pathname, else 0. |
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137 |
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1803
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138 static int |
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139 absolute_pathname (const string& s) |
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140 { |
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1755
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141 if (s.empty ()) |
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142 return 0; |
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143 |
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1755
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144 if (s[0] == '/') |
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145 return 1; |
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146 |
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1755
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147 if (s[0] == '.') |
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148 { |
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1755
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149 if (s[1] == '\0' || s[1] == '/') |
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150 return 1; |
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151 |
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1755
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152 if (s[1] == '.') |
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153 if (s[2] == '\0' || s[2] == '/') |
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154 return 1; |
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155 } |
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156 |
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157 return 0; |
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158 } |
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159 |
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160 // Return the `basename' of the pathname in STRING (the stuff after |
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161 // the last '/'). If STRING is not a full pathname, simply return it. |
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162 |
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1755
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163 string |
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164 base_pathname (const string& s) |
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165 { |
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1755
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166 if (! absolute_pathname (s)) |
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167 return s; |
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168 |
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1755
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169 size_t pos = s.rfind ('/'); |
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170 |
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1755
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171 if (pos == NPOS) |
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172 return s; |
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173 else |
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174 return s.substr (pos+1); |
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175 } |
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176 |
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661
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177 // Turn STRING (a pathname) into an absolute pathname, assuming that |
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178 // DOT_PATH contains the symbolic location of '.'. |
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179 |
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1755
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180 string |
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181 make_absolute (const string& s, const string& dot_path) |
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523
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182 { |
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2512
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183 #if defined (__EMX__) |
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184 if (s.length () > 1 && s[1] == ':') |
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185 return s; |
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186 #endif |
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187 |
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1785
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188 if (dot_path.empty () || s[0] == '/' || s.empty ()) |
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189 return s; |
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190 |
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191 string current_path = dot_path; |
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192 |
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1755
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193 if (current_path.empty ()) |
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194 current_path = "./"; |
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195 |
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1755
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196 size_t pos = current_path.length () - 1; |
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197 |
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1755
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198 if (current_path[pos] != '/') |
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199 current_path.append ("/"); |
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200 |
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1755
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201 size_t i = 0; |
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202 size_t slen = s.length (); |
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203 |
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1755
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204 while (i < slen) |
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205 { |
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1755
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206 if (s[i] == '.') |
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523
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207 { |
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1755
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208 if (i + 1 == slen) |
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209 return current_path; |
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210 |
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1755
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211 if (s[i+1] == '/') |
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523
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212 { |
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1755
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213 i += 2; |
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523
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214 continue; |
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215 } |
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216 |
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217 if (s[i+1] == '.' && (i + 2 == slen || s[i+2] == '/')) |
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523
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218 { |
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1755
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219 i += 2; |
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220 |
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1755
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221 if (i != slen) |
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222 i++; |
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223 |
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224 pathname_backup (current_path, 1); |
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225 |
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523
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226 continue; |
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227 } |
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228 } |
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229 |
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1755
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230 size_t tmp = s.find ('/', i); |
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231 |
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1755
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232 if (tmp == NPOS) |
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233 { |
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234 current_path.append (s, i, tmp-i); |
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235 break; |
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236 } |
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237 else |
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238 { |
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239 current_path.append (s, i, tmp-i+1); |
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240 i = tmp + 1; |
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241 } |
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242 } |
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243 |
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1755
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244 return current_path; |
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245 } |
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246 |
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661
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247 // Return a consed string which is the current working directory. |
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248 // FOR_WHOM is the name of the caller for error printing. |
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249 |
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1755
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250 string |
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251 get_working_directory (const string& for_whom) |
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523
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252 { |
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253 if (! follow_symbolic_links) |
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2204
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254 Vcurrent_directory = ""; |
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523
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255 |
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2204
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256 if (Vcurrent_directory.empty ()) |
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523
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257 { |
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2204
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258 Vcurrent_directory = octave_getcwd (); |
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523
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259 |
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2204
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260 if (Vcurrent_directory.empty ()) |
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1755
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261 warning ("%s: can't find current directory!", for_whom.c_str ()); |
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523
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262 } |
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263 |
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2204
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264 return Vcurrent_directory; |
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523
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265 } |
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266 |
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661
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267 // Do the work of changing to the directory NEWDIR. Handle symbolic |
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268 // link following, etc. |
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269 |
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523
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270 static int |
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1755
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271 change_to_directory (const string& newdir) |
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523
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272 { |
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1755
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273 string tmp; |
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523
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274 |
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275 if (follow_symbolic_links) |
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276 { |
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2204
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277 if (Vcurrent_directory.empty ()) |
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523
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278 get_working_directory ("cd_links"); |
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279 |
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2204
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280 if (Vcurrent_directory.empty ()) |
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1755
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281 tmp = newdir; |
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523
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282 else |
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2204
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283 tmp = make_absolute (newdir, Vcurrent_directory); |
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523
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284 |
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1358
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285 // Get rid of trailing `/'. |
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286 |
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1755
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287 size_t len = tmp.length (); |
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523
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288 |
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1755
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289 if (len > 1) |
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523
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290 { |
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1755
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291 if (tmp[--len] == '/') |
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292 tmp.resize (len); |
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523
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293 } |
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294 |
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1755
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295 if (octave_chdir (tmp) < 0) |
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296 return 0; |
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297 else |
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298 { |
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2204
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299 Vcurrent_directory = tmp; |
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1755
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300 return 1; |
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301 } |
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523
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302 } |
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303 else |
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1755
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304 return (octave_chdir (newdir) < 0) ? 0 : 1; |
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523
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305 } |
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306 |
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1328
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307 static int |
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1755
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308 octave_change_to_directory (const string& newdir) |
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1328
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309 { |
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310 int cd_ok = change_to_directory (newdir); |
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311 |
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312 if (cd_ok) |
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313 do_external_plotter_cd (newdir); |
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314 else |
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1755
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315 error ("%s: %s", newdir.c_str (), strerror (errno)); |
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1328
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316 |
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317 return cd_ok; |
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318 } |
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319 |
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1957
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320 DEFUN_TEXT (cd, args, , |
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523
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321 "cd [dir]\n\ |
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322 \n\ |
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323 change current working directory\n\ |
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324 if no arguments are given, the current directory is changed to the\n\ |
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325 users home directory") |
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326 { |
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2086
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327 octave_value_list retval; |
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523
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328 |
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1755
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329 int argc = args.length () + 1; |
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330 |
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1965
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331 string_vector argv = args.make_argv ("cd"); |
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1755
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332 |
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333 if (error_state) |
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334 return retval; |
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523
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335 |
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336 if (argc > 1) |
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337 { |
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1750
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338 string dirname = oct_tilde_expand (argv[1]); |
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523
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339 |
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1750
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340 if (dirname.length () > 0 |
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1755
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341 && ! octave_change_to_directory (dirname)) |
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523
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342 { |
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343 return retval; |
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344 } |
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345 } |
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346 else |
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347 { |
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2204
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348 if (Vhome_directory.empty () |
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349 || ! octave_change_to_directory (Vhome_directory)) |
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523
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350 { |
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351 return retval; |
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352 } |
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353 } |
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354 |
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1755
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355 string directory = get_working_directory ("cd"); |
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2366
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356 bind_builtin_variable ("PWD", directory, 1); |
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523
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357 |
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358 return retval; |
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359 } |
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360 |
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611
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361 DEFALIAS (chdir, cd); |
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362 |
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661
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363 // Get a directory listing. |
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364 |
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1965
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365 static void |
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366 cleanup_iprocstream (void *p) |
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367 { |
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2800
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368 delete static_cast <iprocstream *> (p); |
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1965
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369 } |
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370 |
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1957
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371 DEFUN_TEXT (ls, args, , |
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523
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372 "ls [options]\n\ |
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373 \n\ |
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374 print a directory listing") |
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375 { |
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2086
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376 octave_value_list retval; |
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523
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377 |
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1755
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378 int argc = args.length () + 1; |
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379 |
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1965
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380 string_vector argv = args.make_argv ("ls"); |
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1755
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381 |
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382 if (error_state) |
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383 return retval; |
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523
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384 |
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385 ostrstream ls_buf; |
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386 |
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387 ls_buf << "ls -C "; |
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388 for (int i = 1; i < argc; i++) |
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1750
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389 ls_buf << oct_tilde_expand (argv[i]) << " "; |
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523
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390 |
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391 ls_buf << ends; |
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1449
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392 char *ls_command = ls_buf.str (); |
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523
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393 |
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1449
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394 iprocstream *cmd = new iprocstream (ls_command); |
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523
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395 |
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1469
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396 delete [] ls_command; |
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397 |
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1449
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398 add_unwind_protect (cleanup_iprocstream, cmd); |
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523
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399 |
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1449
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400 if (cmd && *cmd) |
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401 { |
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402 int ch; |
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403 while ((ch = cmd->get ()) != EOF) |
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2095
|
404 octave_stdout << (char) ch; |
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1449
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405 } |
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406 else |
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407 error ("couldn't start process for ls!"); |
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523
|
408 |
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1449
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409 run_unwind_protect (); |
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523
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410 |
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411 return retval; |
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|
412 } |
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413 |
|
549
|
414 DEFALIAS (dir, ls); |
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415 |
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1957
|
416 DEFUN (pwd, , nargout, |
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523
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417 "pwd (): print current working directory") |
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|
418 { |
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2086
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419 octave_value_list retval; |
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1755
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420 string directory; |
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523
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421 |
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422 if (verbatim_pwd) |
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423 { |
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1755
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424 directory = octave_getcwd (); |
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523
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425 |
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1755
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426 if (directory.empty ()) |
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427 warning ("pwd: can't find working directory!"); |
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523
|
428 } |
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|
429 else |
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1755
|
430 directory = get_working_directory ("pwd"); |
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523
|
431 |
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1755
|
432 if (! directory.empty ()) |
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523
|
433 { |
|
1592
|
434 if (nargout == 0) |
|
2095
|
435 octave_stdout << directory << "\n"; |
|
1592
|
436 else |
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437 retval = directory; |
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523
|
438 } |
|
1592
|
439 |
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523
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440 return retval; |
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441 } |
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442 |
|
1957
|
443 DEFUN (readdir, args, , |
|
2669
|
444 "[FILES, STATUS, MSG] = readdir (NAME)\n\ |
|
1389
|
445 \n\ |
|
2802
|
446 Return an array of strings containing the list of all files in the\n\ |
|
2669
|
447 named directory in FILES, or an empty matrix if an error occurs\n\ |
|
|
448 \n\ |
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|
449 If successful, STATUS is 0 and MSG is an empty string. Otherwise,\n\ |
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|
450 STATUS is nonzero and MSG contains a system-dependent error message.") |
|
1389
|
451 { |
|
2086
|
452 octave_value_list retval; |
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1389
|
453 |
|
2669
|
454 retval(2) = string (); |
|
|
455 retval(1) = -1.0; |
|
|
456 retval(0) = Matrix (); |
|
|
457 |
|
1401
|
458 if (args.length () == 1) |
|
1389
|
459 { |
|
1755
|
460 string dirname = args(0).string_value (); |
|
1389
|
461 |
|
1401
|
462 if (error_state) |
|
1781
|
463 gripe_wrong_type_arg ("readdir", args(0)); |
|
1401
|
464 else |
|
|
465 { |
|
1781
|
466 dir_entry dir (oct_tilde_expand (dirname)); |
|
1389
|
467 |
|
1401
|
468 if (dir) |
|
1389
|
469 { |
|
1781
|
470 string_vector dirlist = dir.read (); |
|
|
471 retval(0) = dirlist.qsort (); |
|
2669
|
472 retval(1) = 0.0; |
|
1401
|
473 } |
|
|
474 else |
|
|
475 { |
|
2669
|
476 retval(2) = dir.error (); |
|
1401
|
477 } |
|
1389
|
478 } |
|
|
479 } |
|
|
480 else |
|
|
481 print_usage ("readdir"); |
|
|
482 |
|
1401
|
483 return retval; |
|
|
484 } |
|
|
485 |
|
|
486 // XXX FIXME XXX -- should probably also allow second arg to specify |
|
|
487 // mode. |
|
|
488 |
|
1957
|
489 DEFUN (mkdir, args, , |
|
2669
|
490 "[STATUS, MSG] = mkdir (NAME)\n\ |
|
1401
|
491 \n\ |
|
2669
|
492 Create the directory named by NAME.\n\ |
|
|
493 \n\ |
|
|
494 If successful, STATUS is 0 and MSG is an empty string. Otherwise,\n\ |
|
|
495 STATUS is nonzero and MSG contains a system-dependent error message.") |
|
1401
|
496 { |
|
2086
|
497 octave_value_list retval; |
|
1401
|
498 |
|
2669
|
499 retval(1) = string (); |
|
|
500 retval(0) = -1.0; |
|
1401
|
501 |
|
|
502 if (args.length () == 1) |
|
|
503 { |
|
1755
|
504 string dirname = args(0).string_value (); |
|
1401
|
505 |
|
|
506 if (error_state) |
|
1402
|
507 gripe_wrong_type_arg ("mkdir", args(0)); |
|
1489
|
508 else |
|
1401
|
509 { |
|
2669
|
510 string msg; |
|
|
511 |
|
|
512 int status = oct_mkdir (oct_tilde_expand (dirname), |
|
|
513 0777, msg); |
|
1489
|
514 |
|
2800
|
515 retval(0) = static_cast<double> (status); |
|
2669
|
516 |
|
|
517 if (status < 0) |
|
|
518 retval(1) = msg; |
|
1401
|
519 } |
|
|
520 } |
|
|
521 else |
|
|
522 print_usage ("mkdir"); |
|
|
523 |
|
|
524 return retval; |
|
|
525 } |
|
|
526 |
|
1957
|
527 DEFUN (rmdir, args, , |
|
2669
|
528 "[STATUS, MSG] = rmdir (NAME)\n\ |
|
1401
|
529 \n\ |
|
2669
|
530 Remove the directory named by NAME.\n\ |
|
|
531 \n\ |
|
|
532 If successful, STATUS is 0 and MSG is an empty string. Otherwise,\n\ |
|
|
533 STATUS is nonzero and MSG contains a system-dependent error message.") |
|
1401
|
534 { |
|
2086
|
535 octave_value_list retval; |
|
1401
|
536 |
|
2669
|
537 retval(1) = string (); |
|
|
538 retval(0) = -1.0; |
|
1401
|
539 |
|
|
540 if (args.length () == 1) |
|
|
541 { |
|
1755
|
542 string dirname = args(0).string_value (); |
|
1401
|
543 |
|
|
544 if (error_state) |
|
1402
|
545 gripe_wrong_type_arg ("rmdir", args(0)); |
|
1489
|
546 else |
|
1401
|
547 { |
|
2669
|
548 string msg; |
|
|
549 |
|
|
550 int status = oct_rmdir (oct_tilde_expand (dirname), msg); |
|
1489
|
551 |
|
2800
|
552 retval(0) = static_cast<double> (status); |
|
2669
|
553 |
|
|
554 if (status < 0) |
|
|
555 retval(1) = msg; |
|
1401
|
556 } |
|
|
557 } |
|
1389
|
558 else |
|
1401
|
559 print_usage ("rmdir"); |
|
|
560 |
|
|
561 return retval; |
|
|
562 } |
|
|
563 |
|
1957
|
564 DEFUN (rename, args, , |
|
2669
|
565 "[STATUS, MSG] = rename (FROM, TO)\n\ |
|
1401
|
566 \n\ |
|
2669
|
567 Rename a file.\n\ |
|
|
568 \n\ |
|
|
569 If successful, STATUS is 0 and MSG is an empty string. Otherwise,\n\ |
|
|
570 STATUS is nonzero and MSG contains a system-dependent error message.") |
|
1401
|
571 { |
|
2086
|
572 octave_value_list retval; |
|
1401
|
573 |
|
2669
|
574 retval(1) = string (); |
|
|
575 retval(0) = -1.0; |
|
1401
|
576 |
|
|
577 if (args.length () == 2) |
|
|
578 { |
|
1755
|
579 string from = args(0).string_value (); |
|
1728
|
580 |
|
1401
|
581 if (error_state) |
|
1402
|
582 gripe_wrong_type_arg ("rename", args(0)); |
|
|
583 else |
|
1401
|
584 { |
|
1755
|
585 string to = args(1).string_value (); |
|
1728
|
586 |
|
1402
|
587 if (error_state) |
|
|
588 gripe_wrong_type_arg ("rename", args(1)); |
|
2669
|
589 else |
|
1402
|
590 { |
|
2669
|
591 string msg; |
|
|
592 |
|
|
593 int status = oct_rename (from, to, msg); |
|
|
594 |
|
2800
|
595 retval(0) = static_cast<double> (status); |
|
2669
|
596 |
|
|
597 if (status < 0) |
|
|
598 retval(1) = msg; |
|
1402
|
599 } |
|
1401
|
600 } |
|
|
601 } |
|
|
602 else |
|
|
603 print_usage ("rename"); |
|
|
604 |
|
1389
|
605 return retval; |
|
|
606 } |
|
|
607 |
|
2495
|
608 DEFUN (glob, args, , |
|
|
609 "glob (PATTERN)\n\ |
|
|
610 \n\ |
|
2496
|
611 Given an array of strings in PATTERN, return the list of file names\n\ |
|
|
612 that any of them, or an empty string if no patterns match. Tilde\n\ |
|
|
613 expansion is performed on each of the patterns before looking for\n\ |
|
2495
|
614 matching file names.") |
|
|
615 { |
|
|
616 octave_value retval; |
|
|
617 |
|
|
618 if (args.length () == 1) |
|
|
619 { |
|
|
620 string_vector pat = args(0).all_strings (); |
|
|
621 |
|
|
622 if (error_state) |
|
|
623 gripe_wrong_type_arg ("glob", args(0)); |
|
|
624 else |
|
|
625 { |
|
|
626 glob_match pattern (oct_tilde_expand (pat)); |
|
|
627 |
|
|
628 string_vector list = pattern.glob (); |
|
|
629 |
|
|
630 if (list.empty ()) |
|
|
631 retval = ""; |
|
|
632 else |
|
|
633 retval = list; |
|
|
634 } |
|
|
635 } |
|
|
636 else |
|
|
637 print_usage ("glob"); |
|
|
638 |
|
|
639 return retval; |
|
|
640 } |
|
|
641 |
|
2496
|
642 DEFUN (fnmatch, args, , |
|
|
643 "fnmatch (PATTERN, STRING)\n\ |
|
|
644 \n\ |
|
|
645 Return 1 or zero for each element of STRING that matches any of the\n\ |
|
|
646 elements of the string array PATTERN, using the rules of filename\n\ |
|
|
647 pattern matching.") |
|
|
648 { |
|
|
649 octave_value retval; |
|
|
650 |
|
|
651 if (args.length () == 2) |
|
|
652 { |
|
|
653 string_vector pat = args(0).all_strings (); |
|
|
654 string_vector str = args(1).all_strings (); |
|
|
655 |
|
|
656 if (error_state) |
|
|
657 gripe_wrong_type_arg ("fnmatch", args(0)); |
|
|
658 else |
|
|
659 { |
|
|
660 glob_match pattern (oct_tilde_expand (pat)); |
|
|
661 |
|
|
662 Array<bool> tmp = pattern.match (str); |
|
|
663 |
|
|
664 int n = tmp.length (); |
|
|
665 |
|
|
666 ColumnVector result (n); |
|
|
667 |
|
|
668 for (int i = 0; i < n; i++) |
|
|
669 result(i) = tmp(i); |
|
|
670 |
|
|
671 retval = octave_value (result, true); |
|
|
672 } |
|
|
673 } |
|
|
674 else |
|
|
675 print_usage ("fnmatch"); |
|
|
676 |
|
|
677 return retval; |
|
|
678 } |
|
|
679 |
|
2196
|
680 static int |
|
|
681 pwd (void) |
|
|
682 { |
|
|
683 int status = 0; |
|
|
684 |
|
|
685 string s = builtin_string_variable ("PWD"); |
|
|
686 |
|
|
687 if (s.empty ()) |
|
|
688 { |
|
|
689 gripe_invalid_value_specified ("PWD"); |
|
|
690 status = -1; |
|
|
691 } |
|
|
692 else |
|
|
693 Vcurrent_directory = s; |
|
|
694 |
|
|
695 return status; |
|
|
696 } |
|
|
697 |
|
|
698 void |
|
|
699 symbols_of_dirfns (void) |
|
|
700 { |
|
|
701 DEFCONST (PWD, get_working_directory ("initialize_globals"), 0, pwd, |
|
|
702 "current working directory"); |
|
|
703 } |
|
|
704 |
|
523
|
705 /* |
|
|
706 ;;; Local Variables: *** |
|
|
707 ;;; mode: C++ *** |
|
|
708 ;;; End: *** |
|
|
709 */ |
