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1 /* |
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2 |
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1884
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3 Copyright (C) 1996 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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1315
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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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1804
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30 base_pathname |
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661
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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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1341
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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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523
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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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2495
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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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1755
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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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1755
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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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1755
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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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1755
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125 && (name.length () == len || name[len] == '/')) |
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126 { |
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1755
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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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523
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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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1755
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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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661
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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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1755
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174 return s.substr (pos+1); |
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523
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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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1755
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178 // DOT_PATH contains the symbolic location of '.'. |
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661
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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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1785
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183 if (dot_path.empty () || s[0] == '/' || s.empty ()) |
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1755
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184 return s; |
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185 |
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186 string current_path = dot_path; |
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187 |
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1755
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188 if (current_path.empty ()) |
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189 current_path = "./"; |
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190 |
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1755
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191 size_t pos = current_path.length () - 1; |
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192 |
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1755
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193 if (current_path[pos] != '/') |
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194 current_path.append ("/"); |
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195 |
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1755
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196 size_t i = 0; |
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197 size_t slen = s.length (); |
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523
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198 |
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1755
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199 while (i < slen) |
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523
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200 { |
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1755
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201 if (s[i] == '.') |
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523
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202 { |
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1755
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203 if (i + 1 == slen) |
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204 return current_path; |
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205 |
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1755
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206 if (s[i+1] == '/') |
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523
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207 { |
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1755
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208 i += 2; |
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523
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209 continue; |
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210 } |
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211 |
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1755
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212 if (s[i+1] == '.' && (i + 2 == slen || s[i+2] == '/')) |
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523
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213 { |
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1755
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214 i += 2; |
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523
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215 |
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1755
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216 if (i != slen) |
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217 i++; |
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523
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218 |
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219 pathname_backup (current_path, 1); |
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1755
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220 |
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523
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221 continue; |
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222 } |
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223 } |
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224 |
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1755
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225 size_t tmp = s.find ('/', i); |
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523
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226 |
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1755
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227 if (tmp == NPOS) |
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228 { |
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229 current_path.append (s, i, tmp-i); |
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230 break; |
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231 } |
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232 else |
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233 { |
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234 current_path.append (s, i, tmp-i+1); |
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235 i = tmp + 1; |
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236 } |
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237 } |
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523
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238 |
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1755
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239 return current_path; |
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523
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240 } |
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241 |
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661
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242 // Return a consed string which is the current working directory. |
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243 // FOR_WHOM is the name of the caller for error printing. |
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244 |
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1755
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245 string |
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246 get_working_directory (const string& for_whom) |
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523
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247 { |
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248 if (! follow_symbolic_links) |
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2204
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249 Vcurrent_directory = ""; |
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523
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250 |
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2204
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251 if (Vcurrent_directory.empty ()) |
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523
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252 { |
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2204
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253 Vcurrent_directory = octave_getcwd (); |
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523
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254 |
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2204
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255 if (Vcurrent_directory.empty ()) |
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1755
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256 warning ("%s: can't find current directory!", for_whom.c_str ()); |
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523
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257 } |
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258 |
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2204
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259 return Vcurrent_directory; |
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523
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260 } |
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261 |
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661
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262 // Do the work of changing to the directory NEWDIR. Handle symbolic |
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263 // link following, etc. |
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264 |
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523
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265 static int |
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1755
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266 change_to_directory (const string& newdir) |
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523
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267 { |
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1755
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268 string tmp; |
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523
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269 |
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270 if (follow_symbolic_links) |
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271 { |
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2204
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272 if (Vcurrent_directory.empty ()) |
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523
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273 get_working_directory ("cd_links"); |
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274 |
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2204
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275 if (Vcurrent_directory.empty ()) |
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1755
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276 tmp = newdir; |
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523
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277 else |
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2204
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278 tmp = make_absolute (newdir, Vcurrent_directory); |
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523
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279 |
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1358
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280 // Get rid of trailing `/'. |
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281 |
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1755
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282 size_t len = tmp.length (); |
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523
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283 |
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1755
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284 if (len > 1) |
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523
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285 { |
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1755
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286 if (tmp[--len] == '/') |
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287 tmp.resize (len); |
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523
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288 } |
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289 |
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1755
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290 if (octave_chdir (tmp) < 0) |
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291 return 0; |
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292 else |
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293 { |
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2204
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294 Vcurrent_directory = tmp; |
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1755
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295 return 1; |
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296 } |
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523
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297 } |
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298 else |
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1755
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299 return (octave_chdir (newdir) < 0) ? 0 : 1; |
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523
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300 } |
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301 |
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1328
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302 static int |
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1755
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303 octave_change_to_directory (const string& newdir) |
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1328
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304 { |
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305 int cd_ok = change_to_directory (newdir); |
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306 |
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307 if (cd_ok) |
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308 do_external_plotter_cd (newdir); |
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309 else |
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1755
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310 error ("%s: %s", newdir.c_str (), strerror (errno)); |
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1328
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311 |
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312 return cd_ok; |
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313 } |
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314 |
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1957
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315 DEFUN_TEXT (cd, args, , |
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523
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316 "cd [dir]\n\ |
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317 \n\ |
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318 change current working directory\n\ |
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319 if no arguments are given, the current directory is changed to the\n\ |
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320 users home directory") |
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321 { |
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2086
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322 octave_value_list retval; |
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523
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323 |
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1755
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324 int argc = args.length () + 1; |
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325 |
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1965
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326 string_vector argv = args.make_argv ("cd"); |
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1755
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327 |
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328 if (error_state) |
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329 return retval; |
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523
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330 |
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331 if (argc > 1) |
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332 { |
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1750
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333 string dirname = oct_tilde_expand (argv[1]); |
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523
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334 |
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1750
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335 if (dirname.length () > 0 |
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1755
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336 && ! octave_change_to_directory (dirname)) |
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523
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337 { |
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338 return retval; |
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339 } |
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340 } |
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341 else |
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342 { |
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2204
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343 if (Vhome_directory.empty () |
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344 || ! octave_change_to_directory (Vhome_directory)) |
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523
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345 { |
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346 return retval; |
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347 } |
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348 } |
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349 |
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1755
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350 string directory = get_working_directory ("cd"); |
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2366
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351 bind_builtin_variable ("PWD", directory, 1); |
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523
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352 |
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353 return retval; |
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354 } |
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355 |
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611
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356 DEFALIAS (chdir, cd); |
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357 |
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661
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358 // Get a directory listing. |
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359 |
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1965
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360 static void |
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361 cleanup_iprocstream (void *p) |
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362 { |
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363 delete (iprocstream *) p; |
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364 } |
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365 |
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1957
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366 DEFUN_TEXT (ls, args, , |
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523
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367 "ls [options]\n\ |
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368 \n\ |
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369 print a directory listing") |
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370 { |
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2086
|
371 octave_value_list retval; |
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523
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372 |
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1755
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373 int argc = args.length () + 1; |
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374 |
|
1965
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375 string_vector argv = args.make_argv ("ls"); |
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1755
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376 |
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377 if (error_state) |
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378 return retval; |
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523
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379 |
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380 ostrstream ls_buf; |
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381 |
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382 ls_buf << "ls -C "; |
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383 for (int i = 1; i < argc; i++) |
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1750
|
384 ls_buf << oct_tilde_expand (argv[i]) << " "; |
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523
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385 |
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386 ls_buf << ends; |
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1449
|
387 char *ls_command = ls_buf.str (); |
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523
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388 |
|
1449
|
389 iprocstream *cmd = new iprocstream (ls_command); |
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523
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390 |
|
1469
|
391 delete [] ls_command; |
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392 |
|
1449
|
393 add_unwind_protect (cleanup_iprocstream, cmd); |
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523
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394 |
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1449
|
395 if (cmd && *cmd) |
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396 { |
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397 int ch; |
|
|
398 while ((ch = cmd->get ()) != EOF) |
|
2095
|
399 octave_stdout << (char) ch; |
|
1449
|
400 } |
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|
401 else |
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402 error ("couldn't start process for ls!"); |
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523
|
403 |
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1449
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404 run_unwind_protect (); |
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523
|
405 |
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406 return retval; |
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|
407 } |
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|
408 |
|
549
|
409 DEFALIAS (dir, ls); |
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410 |
|
1957
|
411 DEFUN (pwd, , nargout, |
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523
|
412 "pwd (): print current working directory") |
|
|
413 { |
|
2086
|
414 octave_value_list retval; |
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1755
|
415 string directory; |
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523
|
416 |
|
|
417 if (verbatim_pwd) |
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|
418 { |
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1755
|
419 directory = octave_getcwd (); |
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523
|
420 |
|
1755
|
421 if (directory.empty ()) |
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|
422 warning ("pwd: can't find working directory!"); |
|
523
|
423 } |
|
|
424 else |
|
1755
|
425 directory = get_working_directory ("pwd"); |
|
523
|
426 |
|
1755
|
427 if (! directory.empty ()) |
|
523
|
428 { |
|
1592
|
429 if (nargout == 0) |
|
2095
|
430 octave_stdout << directory << "\n"; |
|
1592
|
431 else |
|
|
432 retval = directory; |
|
523
|
433 } |
|
1592
|
434 |
|
523
|
435 return retval; |
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|
436 } |
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|
437 |
|
1957
|
438 DEFUN (readdir, args, , |
|
1389
|
439 "readdir (NAME)\n\ |
|
|
440 \n\ |
|
|
441 Return an array of strings containing the list of all files in the |
|
1401
|
442 named directory. If sucessful, returns 0; otherwise an error message |
|
|
443 is printed.") |
|
1389
|
444 { |
|
2086
|
445 octave_value_list retval; |
|
1389
|
446 |
|
1401
|
447 if (args.length () == 1) |
|
1389
|
448 { |
|
1755
|
449 string dirname = args(0).string_value (); |
|
1389
|
450 |
|
1401
|
451 if (error_state) |
|
1781
|
452 gripe_wrong_type_arg ("readdir", args(0)); |
|
1401
|
453 else |
|
|
454 { |
|
1781
|
455 dir_entry dir (oct_tilde_expand (dirname)); |
|
1389
|
456 |
|
1401
|
457 if (dir) |
|
1389
|
458 { |
|
1781
|
459 string_vector dirlist = dir.read (); |
|
|
460 retval(0) = dirlist.qsort (); |
|
1401
|
461 } |
|
|
462 else |
|
|
463 { |
|
1781
|
464 string msg = dir.error (); |
|
|
465 error ("%s", msg.c_str ()); |
|
1401
|
466 } |
|
1389
|
467 } |
|
|
468 } |
|
|
469 else |
|
|
470 print_usage ("readdir"); |
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|
471 |
|
1401
|
472 return retval; |
|
|
473 } |
|
|
474 |
|
|
475 // XXX FIXME XXX -- should probably also allow second arg to specify |
|
|
476 // mode. |
|
|
477 |
|
1957
|
478 DEFUN (mkdir, args, , |
|
1401
|
479 "mkdir (NAME)\n\ |
|
|
480 \n\ |
|
|
481 Create the directory named by NAME. If successful, returns 0;\n\ |
|
|
482 otherwise prints an error message.") |
|
|
483 { |
|
2086
|
484 octave_value_list retval; |
|
1401
|
485 |
|
|
486 int status = 0; |
|
|
487 |
|
|
488 if (args.length () == 1) |
|
|
489 { |
|
1755
|
490 string dirname = args(0).string_value (); |
|
1401
|
491 |
|
|
492 if (error_state) |
|
1402
|
493 gripe_wrong_type_arg ("mkdir", args(0)); |
|
1489
|
494 else |
|
1401
|
495 { |
|
1773
|
496 int mkdir_retval = oct_mkdir (oct_tilde_expand (dirname), 0777); |
|
1489
|
497 |
|
|
498 if (mkdir_retval < 0) |
|
|
499 { |
|
|
500 status = -1; |
|
|
501 error ("%s", strerror (errno)); |
|
|
502 } |
|
1401
|
503 } |
|
|
504 } |
|
|
505 else |
|
|
506 print_usage ("mkdir"); |
|
|
507 |
|
|
508 if (status == 0) |
|
1389
|
509 retval (0) = (double) status; |
|
1401
|
510 |
|
|
511 return retval; |
|
|
512 } |
|
|
513 |
|
1957
|
514 DEFUN (rmdir, args, , |
|
1401
|
515 "rmdir (NAME)\n\ |
|
|
516 \n\ |
|
|
517 Remove the directory named by NAME. If successful, returns 0;\n\ |
|
|
518 otherwise prints an error message.") |
|
|
519 { |
|
2086
|
520 octave_value_list retval; |
|
1401
|
521 |
|
|
522 int status = 0; |
|
|
523 |
|
|
524 if (args.length () == 1) |
|
|
525 { |
|
1755
|
526 string dirname = args(0).string_value (); |
|
1401
|
527 |
|
|
528 if (error_state) |
|
1402
|
529 gripe_wrong_type_arg ("rmdir", args(0)); |
|
1489
|
530 else |
|
1401
|
531 { |
|
1773
|
532 int rmdir_retval = oct_rmdir (oct_tilde_expand (dirname)); |
|
1489
|
533 |
|
|
534 if (rmdir_retval < 0) |
|
|
535 { |
|
|
536 status = -1; |
|
|
537 error ("%s", strerror (errno)); |
|
|
538 } |
|
1401
|
539 } |
|
|
540 } |
|
1389
|
541 else |
|
1401
|
542 print_usage ("rmdir"); |
|
|
543 |
|
|
544 if (status == 0) |
|
|
545 retval (0) = (double) status; |
|
|
546 |
|
|
547 return retval; |
|
|
548 } |
|
|
549 |
|
1957
|
550 DEFUN (rename, args, , |
|
1401
|
551 "rename (FROM, TO)\n\ |
|
|
552 \n\ |
|
|
553 Rename a file. If successful, returns 0;\n\ |
|
|
554 otherwise prints an error message and returns -1.") |
|
|
555 { |
|
2086
|
556 octave_value_list retval; |
|
1401
|
557 |
|
|
558 int status = 0; |
|
|
559 |
|
|
560 if (args.length () == 2) |
|
|
561 { |
|
1755
|
562 string from = args(0).string_value (); |
|
1728
|
563 |
|
1401
|
564 if (error_state) |
|
1402
|
565 gripe_wrong_type_arg ("rename", args(0)); |
|
|
566 else |
|
1401
|
567 { |
|
1755
|
568 string to = args(1).string_value (); |
|
1728
|
569 |
|
1402
|
570 if (error_state) |
|
|
571 gripe_wrong_type_arg ("rename", args(1)); |
|
1773
|
572 else if (oct_rename (from, to) < 0) |
|
1402
|
573 { |
|
|
574 status = -1; |
|
|
575 error ("%s", strerror (errno)); |
|
|
576 } |
|
1401
|
577 } |
|
|
578 } |
|
|
579 else |
|
|
580 print_usage ("rename"); |
|
|
581 |
|
|
582 if (status == 0) |
|
|
583 retval (0) = (double) status; |
|
1389
|
584 |
|
|
585 return retval; |
|
|
586 } |
|
|
587 |
|
2495
|
588 DEFUN (glob, args, , |
|
|
589 "glob (PATTERN)\n\ |
|
|
590 \n\ |
|
2496
|
591 Given an array of strings in PATTERN, return the list of file names\n\ |
|
|
592 that any of them, or an empty string if no patterns match. Tilde\n\ |
|
|
593 expansion is performed on each of the patterns before looking for\n\ |
|
2495
|
594 matching file names.") |
|
|
595 { |
|
|
596 octave_value retval; |
|
|
597 |
|
|
598 if (args.length () == 1) |
|
|
599 { |
|
|
600 string_vector pat = args(0).all_strings (); |
|
|
601 |
|
|
602 if (error_state) |
|
|
603 gripe_wrong_type_arg ("glob", args(0)); |
|
|
604 else |
|
|
605 { |
|
|
606 glob_match pattern (oct_tilde_expand (pat)); |
|
|
607 |
|
|
608 string_vector list = pattern.glob (); |
|
|
609 |
|
|
610 if (list.empty ()) |
|
|
611 retval = ""; |
|
|
612 else |
|
|
613 retval = list; |
|
|
614 } |
|
|
615 } |
|
|
616 else |
|
|
617 print_usage ("glob"); |
|
|
618 |
|
|
619 return retval; |
|
|
620 } |
|
|
621 |
|
2496
|
622 DEFUN (fnmatch, args, , |
|
|
623 "fnmatch (PATTERN, STRING)\n\ |
|
|
624 \n\ |
|
|
625 Return 1 or zero for each element of STRING that matches any of the\n\ |
|
|
626 elements of the string array PATTERN, using the rules of filename\n\ |
|
|
627 pattern matching.") |
|
|
628 { |
|
|
629 octave_value retval; |
|
|
630 |
|
|
631 if (args.length () == 2) |
|
|
632 { |
|
|
633 string_vector pat = args(0).all_strings (); |
|
|
634 string_vector str = args(1).all_strings (); |
|
|
635 |
|
|
636 if (error_state) |
|
|
637 gripe_wrong_type_arg ("fnmatch", args(0)); |
|
|
638 else |
|
|
639 { |
|
|
640 glob_match pattern (oct_tilde_expand (pat)); |
|
|
641 |
|
|
642 Array<bool> tmp = pattern.match (str); |
|
|
643 |
|
|
644 int n = tmp.length (); |
|
|
645 |
|
|
646 ColumnVector result (n); |
|
|
647 |
|
|
648 for (int i = 0; i < n; i++) |
|
|
649 result(i) = tmp(i); |
|
|
650 |
|
|
651 retval = octave_value (result, true); |
|
|
652 } |
|
|
653 } |
|
|
654 else |
|
|
655 print_usage ("fnmatch"); |
|
|
656 |
|
|
657 return retval; |
|
|
658 } |
|
|
659 |
|
2196
|
660 static int |
|
|
661 pwd (void) |
|
|
662 { |
|
|
663 int status = 0; |
|
|
664 |
|
|
665 string s = builtin_string_variable ("PWD"); |
|
|
666 |
|
|
667 if (s.empty ()) |
|
|
668 { |
|
|
669 gripe_invalid_value_specified ("PWD"); |
|
|
670 status = -1; |
|
|
671 } |
|
|
672 else |
|
|
673 Vcurrent_directory = s; |
|
|
674 |
|
|
675 return status; |
|
|
676 } |
|
|
677 |
|
|
678 void |
|
|
679 symbols_of_dirfns (void) |
|
|
680 { |
|
|
681 DEFCONST (PWD, get_working_directory ("initialize_globals"), 0, pwd, |
|
|
682 "current working directory"); |
|
|
683 } |
|
|
684 |
|
523
|
685 /* |
|
|
686 ;;; Local Variables: *** |
|
|
687 ;;; mode: C++ *** |
|
|
688 ;;; End: *** |
|
|
689 */ |
