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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 3 of the License, or (at your |
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10 option) any 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, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cerrno> |
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28 #include <cstdio> |
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29 #include <cstdlib> |
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30 #include <cstring> |
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31 |
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32 #include <iostream> |
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33 #include <vector> |
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34 |
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35 #ifdef HAVE_SYS_TYPES_H |
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36 #include <sys/types.h> |
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37 #endif |
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38 |
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39 #ifdef HAVE_UNISTD_H |
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40 #include <unistd.h> |
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41 #endif |
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42 |
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43 #include "dir-ops.h" |
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44 #include "file-ops.h" |
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45 #include "file-stat.h" |
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46 #include "oct-env.h" |
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47 #include "oct-passwd.h" |
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48 #include "pathlen.h" |
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49 #include "quit.h" |
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50 #include "statdefs.h" |
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51 #include "str-vec.h" |
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52 |
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53 #define NOT_SUPPORTED(nm) \ |
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54 nm ": not supported on this system" |
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55 |
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56 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) \ |
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57 && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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58 char file_ops::dir_sep_char = '\\'; |
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59 std::string file_ops::dir_sep_str ("\\"); |
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60 #else |
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61 char file_ops::dir_sep_char = '/'; |
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62 std::string file_ops::dir_sep_str ("/"); |
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63 #endif |
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64 |
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65 #if defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) |
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66 std::string file_ops::dir_sep_chars ("/\\"); |
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67 #else |
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68 std::string file_ops::dir_sep_chars (file_ops::dir_sep_str); |
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69 #endif |
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70 |
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71 // We provide a replacement for mkdir(). |
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72 |
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73 int |
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74 file_ops::mkdir (const std::string& name, mode_t mode) |
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75 { |
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76 std::string msg; |
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77 return mkdir (name, mode, msg); |
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78 } |
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79 |
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80 int |
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81 file_ops::mkdir (const std::string& name, mode_t mode, std::string& msg) |
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82 { |
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83 msg = std::string (); |
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84 |
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85 int status = -1; |
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86 |
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87 #if defined (HAVE_MKDIR) |
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88 |
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89 #if defined (MKDIR_TAKES_ONE_ARG) |
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90 status = ::mkdir (name.c_str ()); |
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91 #else |
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92 status = ::mkdir (name.c_str (), mode); |
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93 #endif |
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94 |
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95 if (status < 0) |
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96 { |
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97 using namespace std; |
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98 msg = ::strerror (errno); |
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99 } |
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100 #else |
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101 msg = NOT_SUPPORTED ("mkdir"); |
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102 #endif |
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103 |
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104 return status; |
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105 } |
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106 |
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107 // I don't know how to emulate this on systems that don't provide it. |
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108 |
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109 int |
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110 file_ops::mkfifo (const std::string& name, mode_t mode) |
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111 { |
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112 std::string msg; |
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113 return mkfifo (name, mode, msg); |
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114 } |
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115 |
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116 int |
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117 file_ops::mkfifo (const std::string& name, mode_t mode, std::string& msg) |
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118 { |
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119 msg = std::string (); |
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120 |
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121 int status = -1; |
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122 |
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123 #if defined (HAVE_MKFIFO) |
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124 status = ::mkfifo (name.c_str (), mode); |
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125 |
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126 if (status < 0) |
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127 { |
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128 using namespace std; |
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129 msg = ::strerror (errno); |
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130 } |
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131 #else |
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132 msg = NOT_SUPPORTED ("mkfifo"); |
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133 #endif |
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134 |
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135 return status; |
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136 } |
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137 |
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138 // I don't know how to emulate this on systems that don't provide it. |
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139 |
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140 int |
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141 file_ops::link (const std::string& old_name, const std::string& new_name) |
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142 { |
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143 std::string msg; |
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144 return link (old_name, new_name, msg); |
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145 } |
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146 |
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147 int |
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148 file_ops::link (const std::string& old_name, |
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149 const std::string& new_name, std::string& msg) |
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150 { |
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151 msg = std::string (); |
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152 |
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153 int status = -1; |
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154 |
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155 #if defined (HAVE_LINK) |
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156 status = ::link (old_name.c_str (), new_name.c_str ()); |
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157 |
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158 if (status < 0) |
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159 { |
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160 using namespace std; |
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161 msg = ::strerror (errno); |
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162 } |
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163 #else |
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164 msg = NOT_SUPPORTED ("link"); |
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165 #endif |
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166 |
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167 return status; |
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168 } |
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169 |
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170 // I don't know how to emulate this on systems that don't provide it. |
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171 |
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172 int |
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173 file_ops::symlink (const std::string& old_name, const std::string& new_name) |
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174 { |
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175 std::string msg; |
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176 return symlink (old_name, new_name, msg); |
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177 } |
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178 |
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179 int |
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180 file_ops::symlink (const std::string& old_name, |
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181 const std::string& new_name, std::string& msg) |
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182 { |
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183 msg = std::string (); |
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184 |
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185 int status = -1; |
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186 |
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187 #if defined (HAVE_SYMLINK) |
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188 |
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189 OCTAVE_LOCAL_BUFFER (char, old_nm, old_name.length ()); |
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190 OCTAVE_LOCAL_BUFFER (char, new_nm, new_name.length ()); |
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191 |
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192 strcpy (old_nm, old_name.c_str ()); |
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193 strcpy (new_nm, new_name.c_str ()); |
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194 |
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195 status = ::symlink (old_nm, new_nm); |
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196 |
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197 if (status < 0) |
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198 { |
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199 using namespace std; |
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200 msg = ::strerror (errno); |
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201 } |
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202 #else |
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203 msg = NOT_SUPPORTED ("symlink"); |
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204 #endif |
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205 |
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206 return status; |
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207 } |
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208 |
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209 // We provide a replacement for rename(). |
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210 |
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211 int |
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212 file_ops::readlink (const std::string& path, std::string& result) |
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213 { |
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214 std::string msg; |
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215 return readlink (path, result, msg); |
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216 } |
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217 |
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218 int |
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219 file_ops::readlink (const std::string& path, std::string& result, |
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220 std::string& msg) |
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221 { |
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222 int status = -1; |
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223 |
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224 msg = std::string (); |
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225 |
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226 #if defined (HAVE_READLINK) |
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227 char buf[MAXPATHLEN+1]; |
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228 |
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229 OCTAVE_LOCAL_BUFFER (char, p, path.length ()); |
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230 |
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231 strcpy (p, path.c_str ()); |
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232 |
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233 status = ::readlink (p, buf, MAXPATHLEN); |
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234 |
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235 if (status < 0) |
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236 { |
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237 using namespace std; |
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238 msg = ::strerror (errno); |
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239 } |
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240 else |
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241 { |
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242 buf[status] = '\0'; |
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243 result = std::string (buf); |
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244 status = 0; |
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245 } |
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246 #else |
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247 msg = NOT_SUPPORTED ("rename"); |
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248 #endif |
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249 |
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250 return status; |
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251 } |
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252 |
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253 // We provide a replacement for rename(). |
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254 |
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255 int |
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256 file_ops::rename (const std::string& from, const std::string& to) |
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257 { |
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258 std::string msg; |
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259 return rename (from, to, msg); |
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260 } |
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261 |
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262 int |
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263 file_ops::rename (const std::string& from, const std::string& to, |
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264 std::string& msg) |
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265 { |
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266 int status = -1; |
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267 |
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268 msg = std::string (); |
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269 |
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270 #if defined (HAVE_RENAME) |
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271 status = ::rename (from.c_str (), to.c_str ()); |
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272 |
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273 if (status < 0) |
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274 { |
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275 using namespace std; |
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276 msg = ::strerror (errno); |
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277 } |
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278 #else |
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279 msg = NOT_SUPPORTED ("rename"); |
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280 #endif |
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281 |
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282 return status; |
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283 } |
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284 |
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285 // We provide a replacement for rmdir(). |
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286 |
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287 int |
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288 file_ops::rmdir (const std::string& name) |
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289 { |
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290 std::string msg; |
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291 return rmdir (name, msg); |
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292 } |
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293 |
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294 int |
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295 file_ops::rmdir (const std::string& name, std::string& msg) |
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296 { |
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297 msg = std::string (); |
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298 |
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299 int status = -1; |
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300 |
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301 #if defined (HAVE_RMDIR) |
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302 status = ::rmdir (name.c_str ()); |
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303 |
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304 if (status < 0) |
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305 { |
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306 using namespace std; |
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307 msg = ::strerror (errno); |
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308 } |
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309 #else |
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310 msg = NOT_SUPPORTED ("rmdir"); |
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311 #endif |
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312 |
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313 return status; |
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314 } |
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315 |
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316 // And a version that works recursively. |
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317 |
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318 int |
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319 file_ops::recursive_rmdir (const std::string& name) |
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320 { |
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321 std::string msg; |
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322 return recursive_rmdir (name, msg); |
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323 } |
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324 |
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325 int |
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326 file_ops::recursive_rmdir (const std::string& name, std::string& msg) |
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327 { |
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328 msg = std::string (); |
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329 |
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330 int status = 0; |
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331 |
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332 dir_entry dir (name); |
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333 |
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334 if (dir) |
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335 { |
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336 string_vector dirlist = dir.read (); |
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337 |
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338 for (octave_idx_type i = 0; i < dirlist.length (); i++) |
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339 { |
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340 OCTAVE_QUIT; |
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341 |
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342 std::string nm = dirlist[i]; |
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343 |
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344 // Skip current directory and parent. |
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345 if (nm == "." || nm == "..") |
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346 continue; |
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347 |
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348 std::string fullnm = name + file_ops::dir_sep_str + nm; |
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349 |
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350 // Get info about the file. Don't follow links. |
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351 file_stat fs (fullnm, false); |
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352 |
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353 if (fs) |
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354 { |
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355 if (fs.is_dir ()) |
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356 { |
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357 status = recursive_rmdir (fullnm, msg); |
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358 |
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359 if (status < 0) |
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360 break; |
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361 } |
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362 else |
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363 { |
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364 status = unlink (fullnm, msg); |
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365 |
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366 if (status < 0) |
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367 break; |
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368 } |
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369 } |
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370 else |
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371 { |
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372 msg = fs.error (); |
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373 break; |
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374 } |
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375 } |
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376 |
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377 if (status >= 0) |
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6363
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378 { |
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379 dir.close (); |
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380 status = file_ops::rmdir (name, msg); |
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381 } |
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5476
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382 } |
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383 else |
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384 { |
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385 status = -1; |
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386 |
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387 msg = dir.error (); |
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388 } |
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389 |
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390 return status; |
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391 } |
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392 |
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5138
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393 std::string |
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394 file_ops::canonicalize_file_name (const std::string& name) |
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395 { |
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396 std::string msg; |
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397 return canonicalize_file_name (name, msg); |
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398 } |
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399 |
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400 std::string |
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401 file_ops::canonicalize_file_name (const std::string& name, std::string& msg) |
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402 { |
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403 msg = std::string (); |
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404 |
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405 std::string retval; |
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406 |
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407 #if defined (HAVE_CANONICALIZE_FILE_NAME) |
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408 |
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409 char *tmp = ::canonicalize_file_name (name.c_str ()); |
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410 |
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411 if (tmp) |
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412 { |
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413 retval = tmp; |
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414 ::free (tmp); |
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415 } |
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416 |
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417 #elif defined (HAVE_RESOLVEPATH) |
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418 |
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419 #if !defined (errno) |
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420 extern int errno; |
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421 #endif |
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422 |
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423 #if !defined (__set_errno) |
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424 # define __set_errno(Val) errno = (Val) |
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425 #endif |
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426 |
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427 if (name.empty ()) |
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428 { |
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429 __set_errno (ENOENT); |
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430 return retval; |
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431 } |
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432 |
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433 // All known hosts with resolvepath (e.g. Solaris 7) don't turn |
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434 // relative names into absolute ones, so prepend the working |
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435 // directory if the path is not absolute. |
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436 |
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5149
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437 std::string absolute_name |
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438 = octave_env::make_absolute (name, octave_env::getcwd ()); |
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5138
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439 |
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5149
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440 size_t resolved_size = absolute_name.length (); |
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5138
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441 |
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6208
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442 while (true) |
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5138
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443 { |
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444 resolved_size = 2 * resolved_size + 1; |
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445 |
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446 OCTAVE_LOCAL_BUFFER (char, resolved, resolved_size); |
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447 |
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5149
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448 int resolved_len |
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449 = ::resolvepath (absolute_name.c_str (), resolved, resolved_size); |
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5138
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450 |
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451 if (resolved_len < 0) |
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452 break; |
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453 |
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454 if (resolved_len < resolved_size) |
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455 { |
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456 retval = resolved; |
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457 break; |
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458 } |
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459 } |
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460 |
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6208
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461 #elif defined (__WIN32__) |
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462 |
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463 int n = 1024; |
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464 |
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465 std::string win_path (n, '\0'); |
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466 |
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467 while (true) |
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468 { |
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469 int status = GetFullPathName (name.c_str (), n, &win_path[0], NULL); |
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470 |
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471 if (status == 0) |
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472 break; |
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473 else if (status < n) |
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474 { |
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475 win_path.resize (status); |
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476 retval = win_path; |
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477 break; |
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478 } |
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479 else |
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480 { |
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481 n *= 2; |
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482 win_path.resize (n); |
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483 } |
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484 } |
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485 |
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6271
|
486 #elif defined (HAVE_REALPATH) |
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|
487 |
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|
488 #if !defined (__set_errno) |
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489 # define __set_errno(Val) errno = (Val) |
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490 #endif |
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491 |
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|
492 if (name.empty ()) |
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493 { |
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494 __set_errno (ENOENT); |
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495 return retval; |
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496 } |
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497 |
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|
498 OCTAVE_LOCAL_BUFFER (char, buf, PATH_MAX); |
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499 |
|
6273
|
500 if (::realpath (name.c_str (), buf)) |
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|
501 retval = buf; |
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6271
|
502 |
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5138
|
503 #else |
|
|
504 |
|
5775
|
505 // FIXME -- provide replacement here... |
|
5138
|
506 retval = name; |
|
|
507 |
|
|
508 #endif |
|
|
509 |
|
|
510 if (retval.empty ()) |
|
|
511 { |
|
|
512 using namespace std; |
|
|
513 msg = ::strerror (errno); |
|
|
514 } |
|
|
515 |
|
|
516 return retval; |
|
|
517 } |
|
|
518 |
|
2433
|
519 // We provide a replacement for tempnam(). |
|
|
520 |
|
3504
|
521 std::string |
|
|
522 file_ops::tempnam (const std::string& dir, const std::string& pfx) |
|
1802
|
523 { |
|
3504
|
524 std::string msg; |
|
2937
|
525 return tempnam (dir, pfx, msg); |
|
|
526 } |
|
|
527 |
|
3504
|
528 std::string |
|
|
529 file_ops::tempnam (const std::string& dir, const std::string& pfx, |
|
|
530 std::string& msg) |
|
2937
|
531 { |
|
3504
|
532 msg = std::string (); |
|
2937
|
533 |
|
3504
|
534 std::string retval; |
|
2937
|
535 |
|
|
536 const char *pdir = dir.empty () ? 0 : dir.c_str (); |
|
1802
|
537 |
|
2937
|
538 const char *ppfx = pfx.empty () ? 0 : pfx.c_str (); |
|
|
539 |
|
|
540 char *tmp = ::tempnam (pdir, ppfx); |
|
1802
|
541 |
|
|
542 if (tmp) |
|
|
543 { |
|
|
544 retval = tmp; |
|
|
545 |
|
2937
|
546 ::free (tmp); |
|
1802
|
547 } |
|
|
548 else |
|
3504
|
549 { |
|
|
550 using namespace std; |
|
|
551 msg = ::strerror (errno); |
|
|
552 } |
|
1802
|
553 |
|
|
554 return retval; |
|
|
555 } |
|
|
556 |
|
3040
|
557 // The following tilde-expansion code was stolen and adapted from |
|
|
558 // readline. |
|
2926
|
559 |
|
3040
|
560 // The default value of tilde_additional_prefixes. This is set to |
|
|
561 // whitespace preceding a tilde so that simple programs which do not |
|
|
562 // perform any word separation get desired behaviour. |
|
|
563 static const char *default_prefixes[] = { " ~", "\t~", ":~", 0 }; |
|
|
564 |
|
|
565 // The default value of tilde_additional_suffixes. This is set to |
|
|
566 // whitespace or newline so that simple programs which do not perform |
|
|
567 // any word separation get desired behaviour. |
|
|
568 static const char *default_suffixes[] = { " ", "\n", ":", 0 }; |
|
|
569 |
|
|
570 // If non-null, this contains the address of a function that the |
|
|
571 // application wants called before trying the standard tilde |
|
|
572 // expansions. The function is called with the text sans tilde, and |
|
|
573 // returns a malloc()'ed string which is the expansion, or a NULL |
|
|
574 // pointer if the expansion fails. |
|
|
575 file_ops::tilde_expansion_hook file_ops::tilde_expansion_preexpansion_hook = 0; |
|
|
576 |
|
|
577 // If non-null, this contains the address of a function to call if the |
|
|
578 // standard meaning for expanding a tilde fails. The function is |
|
|
579 // called with the text (sans tilde, as in "foo"), and returns a |
|
|
580 // malloc()'ed string which is the expansion, or a NULL pointer if |
|
|
581 // there is no expansion. |
|
|
582 file_ops::tilde_expansion_hook file_ops::tilde_expansion_failure_hook = 0; |
|
|
583 |
|
|
584 // When non-null, this is a NULL terminated array of strings which are |
|
|
585 // duplicates for a tilde prefix. Bash uses this to expand `=~' and |
|
|
586 // `:~'. |
|
|
587 string_vector file_ops::tilde_additional_prefixes = default_prefixes; |
|
|
588 |
|
|
589 // When non-null, this is a NULL terminated array of strings which |
|
|
590 // match the end of a username, instead of just "/". Bash sets this |
|
|
591 // to `:' and `=~'. |
|
|
592 string_vector file_ops::tilde_additional_suffixes = default_suffixes; |
|
|
593 |
|
|
594 // Find the start of a tilde expansion in S, and return the index |
|
|
595 // of the tilde which starts the expansion. Place the length of the |
|
|
596 // text which identified this tilde starter in LEN, excluding the |
|
|
597 // tilde itself. |
|
|
598 |
|
|
599 static size_t |
|
3504
|
600 tilde_find_prefix (const std::string& s, size_t& len) |
|
3040
|
601 { |
|
|
602 len = 0; |
|
|
603 |
|
|
604 size_t s_len = s.length (); |
|
|
605 |
|
|
606 if (s_len == 0 || s[0] == '~') |
|
|
607 return 0; |
|
|
608 |
|
|
609 string_vector prefixes = file_ops::tilde_additional_prefixes; |
|
|
610 |
|
|
611 if (! prefixes.empty ()) |
|
|
612 { |
|
|
613 for (size_t i = 0; i < s_len; i++) |
|
|
614 { |
|
|
615 for (int j = 0; j < prefixes.length (); j++) |
|
|
616 { |
|
|
617 size_t pfx_len = prefixes[j].length (); |
|
|
618 |
|
|
619 if (prefixes[j].compare (s.substr (i, pfx_len)) == 0) |
|
|
620 { |
|
|
621 len = pfx_len - 1; |
|
|
622 return i + len; |
|
|
623 } |
|
|
624 } |
|
|
625 } |
|
|
626 } |
|
|
627 |
|
|
628 return s_len; |
|
|
629 } |
|
|
630 |
|
|
631 // Find the end of a tilde expansion in S, and return the index |
|
|
632 // of the character which ends the tilde definition. |
|
|
633 |
|
|
634 static size_t |
|
3504
|
635 tilde_find_suffix (const std::string& s) |
|
3040
|
636 { |
|
|
637 size_t s_len = s.length (); |
|
|
638 |
|
|
639 string_vector suffixes = file_ops::tilde_additional_suffixes; |
|
|
640 |
|
|
641 size_t i = 0; |
|
|
642 |
|
|
643 for ( ; i < s_len; i++) |
|
|
644 { |
|
6694
|
645 if (file_ops::is_dir_sep (s[i])) |
|
3040
|
646 break; |
|
|
647 |
|
|
648 if (! suffixes.empty ()) |
|
|
649 { |
|
|
650 for (int j = 0; j < suffixes.length (); j++) |
|
|
651 { |
|
|
652 size_t sfx_len = suffixes[j].length (); |
|
|
653 |
|
|
654 if (suffixes[j].compare (s.substr (i, sfx_len)) == 0) |
|
|
655 return i; |
|
|
656 } |
|
|
657 } |
|
|
658 } |
|
|
659 |
|
|
660 return i; |
|
|
661 } |
|
|
662 |
|
|
663 // Take FNAME and return the tilde prefix we want expanded. |
|
|
664 |
|
3504
|
665 static std::string |
|
|
666 isolate_tilde_prefix (const std::string& fname) |
|
3040
|
667 { |
|
|
668 size_t f_len = fname.length (); |
|
|
669 |
|
|
670 size_t len = 1; |
|
|
671 |
|
6694
|
672 while (len < f_len && ! file_ops::is_dir_sep (fname[len])) |
|
3040
|
673 len++; |
|
|
674 |
|
|
675 return fname.substr (1, len); |
|
|
676 } |
|
|
677 |
|
|
678 // Do the work of tilde expansion on FILENAME. FILENAME starts with a |
|
|
679 // tilde. |
|
|
680 |
|
3504
|
681 static std::string |
|
|
682 tilde_expand_word (const std::string& filename) |
|
3040
|
683 { |
|
|
684 size_t f_len = filename.length (); |
|
|
685 |
|
|
686 if (f_len == 0 || filename[0] != '~') |
|
|
687 return filename; |
|
|
688 |
|
|
689 // A leading `~/' or a bare `~' is *always* translated to the value |
|
|
690 // of $HOME or the home directory of the current user, regardless of |
|
|
691 // any preexpansion hook. |
|
|
692 |
|
6694
|
693 if (f_len == 1 || file_ops::is_dir_sep (filename[1])) |
|
3040
|
694 return octave_env::get_home_directory () + filename.substr (1); |
|
|
695 |
|
3504
|
696 std::string username = isolate_tilde_prefix (filename); |
|
3040
|
697 |
|
|
698 size_t user_len = username.length (); |
|
|
699 |
|
3504
|
700 std::string dirname; |
|
3040
|
701 |
|
|
702 if (file_ops::tilde_expansion_preexpansion_hook) |
|
|
703 { |
|
3504
|
704 std::string expansion |
|
3040
|
705 = file_ops::tilde_expansion_preexpansion_hook (username); |
|
|
706 |
|
|
707 if (! expansion.empty ()) |
|
3074
|
708 return expansion + filename.substr (user_len+1); |
|
3040
|
709 } |
|
|
710 |
|
|
711 // No preexpansion hook, or the preexpansion hook failed. Look in the |
|
|
712 // password database. |
|
|
713 |
|
|
714 octave_passwd pw = octave_passwd::getpwnam (username); |
|
|
715 |
|
|
716 if (! pw) |
|
|
717 { |
|
|
718 // If the calling program has a special syntax for expanding tildes, |
|
|
719 // and we couldn't find a standard expansion, then let them try. |
|
|
720 |
|
|
721 if (file_ops::tilde_expansion_failure_hook) |
|
|
722 { |
|
3504
|
723 std::string expansion |
|
3040
|
724 = file_ops::tilde_expansion_failure_hook (username); |
|
|
725 |
|
|
726 if (! expansion.empty ()) |
|
3074
|
727 dirname = expansion + filename.substr (user_len+1); |
|
3040
|
728 } |
|
|
729 |
|
|
730 // If we don't have a failure hook, or if the failure hook did not |
|
|
731 // expand the tilde, return a copy of what we were passed. |
|
|
732 |
|
|
733 if (dirname.length () == 0) |
|
|
734 dirname = filename; |
|
|
735 } |
|
|
736 else |
|
3074
|
737 dirname = pw.dir () + filename.substr (user_len+1); |
|
3040
|
738 |
|
|
739 return dirname; |
|
|
740 } |
|
|
741 |
|
|
742 // If NAME has a leading ~ or ~user, Unix-style, expand it to the |
|
|
743 // user's home directory. If no ~, or no <pwd.h>, just return NAME. |
|
|
744 |
|
3504
|
745 std::string |
|
|
746 file_ops::tilde_expand (const std::string& name) |
|
2926
|
747 { |
|
3504
|
748 std::string result; |
|
2926
|
749 |
|
3040
|
750 size_t name_len = name.length (); |
|
2926
|
751 |
|
3040
|
752 // Scan through S expanding tildes as we come to them. |
|
2926
|
753 |
|
3040
|
754 size_t pos = 0; |
|
2926
|
755 |
|
3040
|
756 while (1) |
|
|
757 { |
|
|
758 if (pos > name_len) |
|
|
759 break; |
|
2926
|
760 |
|
3040
|
761 size_t len; |
|
|
762 |
|
|
763 // Make START point to the tilde which starts the expansion. |
|
2926
|
764 |
|
3040
|
765 size_t start = tilde_find_prefix (name.substr (pos), len); |
|
|
766 |
|
|
767 result.append (name.substr (pos, start)); |
|
2926
|
768 |
|
3040
|
769 // Advance STRING to the starting tilde. |
|
|
770 |
|
|
771 pos += start; |
|
2926
|
772 |
|
3040
|
773 // Make FINI be the index of one after the last character of the |
|
|
774 // username. |
|
2926
|
775 |
|
3040
|
776 size_t fini = tilde_find_suffix (name.substr (pos)); |
|
2926
|
777 |
|
3040
|
778 // If both START and FINI are zero, we are all done. |
|
2926
|
779 |
|
3040
|
780 if (! (start || fini)) |
|
|
781 break; |
|
2926
|
782 |
|
3040
|
783 // Expand the entire tilde word, and copy it into RESULT. |
|
2947
|
784 |
|
3504
|
785 std::string tilde_word = name.substr (pos, fini); |
|
3040
|
786 |
|
|
787 pos += fini; |
|
2926
|
788 |
|
3504
|
789 std::string expansion = tilde_expand_word (tilde_word); |
|
3040
|
790 |
|
|
791 result.append (expansion); |
|
2926
|
792 } |
|
|
793 |
|
3040
|
794 return result; |
|
2926
|
795 } |
|
|
796 |
|
|
797 // A vector version of the above. |
|
|
798 |
|
|
799 string_vector |
|
|
800 file_ops::tilde_expand (const string_vector& names) |
|
|
801 { |
|
|
802 string_vector retval; |
|
|
803 |
|
|
804 int n = names.length (); |
|
|
805 |
|
|
806 retval.resize (n); |
|
|
807 |
|
|
808 for (int i = 0; i < n; i++) |
|
|
809 retval[i] = file_ops::tilde_expand (names[i]); |
|
|
810 |
|
|
811 return retval; |
|
|
812 } |
|
1802
|
813 |
|
1765
|
814 int |
|
2926
|
815 file_ops::umask (mode_t mode) |
|
1765
|
816 { |
|
|
817 #if defined (HAVE_UMASK) |
|
2926
|
818 return ::umask (mode); |
|
1765
|
819 #else |
|
|
820 return 0; |
|
|
821 #endif |
|
|
822 } |
|
|
823 |
|
1773
|
824 int |
|
3504
|
825 file_ops::unlink (const std::string& name) |
|
1773
|
826 { |
|
3504
|
827 std::string msg; |
|
2937
|
828 return unlink (name, msg); |
|
1773
|
829 } |
|
|
830 |
|
2668
|
831 int |
|
3504
|
832 file_ops::unlink (const std::string& name, std::string& msg) |
|
2668
|
833 { |
|
3504
|
834 msg = std::string (); |
|
2668
|
835 |
|
2937
|
836 int status = -1; |
|
|
837 |
|
|
838 #if defined (HAVE_UNLINK) |
|
|
839 status = ::unlink (name.c_str ()); |
|
2668
|
840 |
|
|
841 if (status < 0) |
|
3504
|
842 { |
|
|
843 using namespace std; |
|
|
844 msg = ::strerror (errno); |
|
|
845 } |
|
2937
|
846 #else |
|
|
847 msg = NOT_SUPPORTED ("unlink"); |
|
|
848 #endif |
|
2668
|
849 |
|
|
850 return status; |
|
|
851 } |
|
|
852 |
|
4097
|
853 bool |
|
|
854 file_ops::is_dir_sep (char c) |
|
|
855 { |
|
4101
|
856 return dir_sep_chars.find (c) != NPOS; |
|
4097
|
857 } |
|
|
858 |
|
1765
|
859 /* |
|
|
860 ;;; Local Variables: *** |
|
|
861 ;;; mode: C++ *** |
|
|
862 ;;; End: *** |
|
|
863 */ |
