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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <cerrno> |
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29 #include <cstdio> |
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30 #include <cstdlib> |
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31 #include <cstring> |
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32 |
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33 #include <iostream> |
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34 #include <vector> |
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35 |
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2443
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36 #ifdef HAVE_SYS_TYPES_H |
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37 #include <sys/types.h> |
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38 #endif |
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39 |
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40 #ifdef HAVE_UNISTD_H |
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41 #include <unistd.h> |
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42 #endif |
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43 |
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44 #include "dir-ops.h" |
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45 #include "file-ops.h" |
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46 #include "file-stat.h" |
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47 #include "oct-env.h" |
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48 #include "oct-passwd.h" |
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49 #include "pathlen.h" |
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50 #include "quit.h" |
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51 #include "statdefs.h" |
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52 #include "str-vec.h" |
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53 |
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54 #define NOT_SUPPORTED(nm) \ |
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55 nm ": not supported on this system" |
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56 |
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57 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) \ |
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58 && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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59 char file_ops::dir_sep_char = '\\'; |
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60 std::string file_ops::dir_sep_str ("\\"); |
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61 #else |
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62 char file_ops::dir_sep_char = '/'; |
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63 std::string file_ops::dir_sep_str ("/"); |
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64 #endif |
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65 |
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66 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) \ |
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67 && defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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68 std::string file_ops::dir_sep_chars ("/\\"); |
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69 #else |
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70 std::string file_ops::dir_sep_chars (file_ops::dir_sep_str); |
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71 #endif |
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72 |
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2433
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73 // We provide a replacement for mkdir(). |
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74 |
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75 int |
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76 file_ops::mkdir (const std::string& name, mode_t mode) |
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77 { |
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78 std::string msg; |
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79 return mkdir (name, mode, msg); |
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80 } |
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81 |
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82 int |
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83 file_ops::mkdir (const std::string& name, mode_t mode, std::string& msg) |
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84 { |
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85 msg = std::string (); |
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86 |
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87 int status = -1; |
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88 |
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89 #if defined (HAVE_MKDIR) |
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90 |
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91 #if defined (MKDIR_TAKES_ONE_ARG) |
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92 status = ::mkdir (name.c_str ()); |
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93 #else |
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94 status = ::mkdir (name.c_str (), mode); |
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95 #endif |
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96 |
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97 if (status < 0) |
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98 { |
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99 using namespace std; |
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100 msg = ::strerror (errno); |
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101 } |
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102 #else |
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103 msg = NOT_SUPPORTED ("mkdir"); |
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104 #endif |
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105 |
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106 return status; |
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107 } |
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108 |
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109 // I don't know how to emulate this on systems that don't provide it. |
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110 |
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111 int |
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112 file_ops::mkfifo (const std::string& name, mode_t mode) |
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113 { |
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114 std::string msg; |
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115 return mkfifo (name, mode, msg); |
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116 } |
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117 |
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118 int |
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119 file_ops::mkfifo (const std::string& name, mode_t mode, std::string& msg) |
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120 { |
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121 msg = std::string (); |
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122 |
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123 int status = -1; |
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124 |
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125 #if defined (HAVE_MKFIFO) |
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126 status = ::mkfifo (name.c_str (), mode); |
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127 |
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128 if (status < 0) |
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129 { |
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130 using namespace std; |
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131 msg = ::strerror (errno); |
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132 } |
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133 #else |
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134 msg = NOT_SUPPORTED ("mkfifo"); |
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135 #endif |
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136 |
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137 return status; |
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138 } |
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139 |
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140 // I don't know how to emulate this on systems that don't provide it. |
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141 |
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142 int |
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143 file_ops::link (const std::string& old_name, const std::string& new_name) |
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144 { |
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145 std::string msg; |
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146 return link (old_name, new_name, msg); |
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147 } |
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148 |
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149 int |
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150 file_ops::link (const std::string& old_name, |
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151 const std::string& new_name, std::string& msg) |
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152 { |
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153 msg = std::string (); |
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154 |
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155 int status = -1; |
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156 |
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157 #if defined (HAVE_LINK) |
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158 status = ::link (old_name.c_str (), new_name.c_str ()); |
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159 |
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160 if (status < 0) |
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161 { |
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162 using namespace std; |
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163 msg = ::strerror (errno); |
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164 } |
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165 #else |
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166 msg = NOT_SUPPORTED ("link"); |
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167 #endif |
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168 |
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169 return status; |
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170 } |
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171 |
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172 // I don't know how to emulate this on systems that don't provide it. |
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173 |
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174 int |
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175 file_ops::symlink (const std::string& old_name, const std::string& new_name) |
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176 { |
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177 std::string msg; |
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178 return symlink (old_name, new_name, msg); |
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179 } |
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180 |
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181 int |
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182 file_ops::symlink (const std::string& old_name, |
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183 const std::string& new_name, std::string& msg) |
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184 { |
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185 msg = std::string (); |
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186 |
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187 int status = -1; |
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188 |
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189 #if defined (HAVE_SYMLINK) |
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190 |
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191 OCTAVE_LOCAL_BUFFER (char, old_nm, old_name.length ()); |
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192 OCTAVE_LOCAL_BUFFER (char, new_nm, new_name.length ()); |
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193 |
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194 strcpy (old_nm, old_name.c_str ()); |
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195 strcpy (new_nm, new_name.c_str ()); |
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196 |
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197 status = ::symlink (old_nm, new_nm); |
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198 |
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199 if (status < 0) |
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200 { |
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201 using namespace std; |
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202 msg = ::strerror (errno); |
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203 } |
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204 #else |
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205 msg = NOT_SUPPORTED ("symlink"); |
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206 #endif |
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207 |
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208 return status; |
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209 } |
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210 |
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211 // We provide a replacement for rename(). |
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212 |
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213 int |
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214 file_ops::readlink (const std::string& path, std::string& result) |
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215 { |
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216 std::string msg; |
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217 return readlink (path, result, msg); |
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218 } |
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219 |
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220 int |
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221 file_ops::readlink (const std::string& path, std::string& result, |
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222 std::string& msg) |
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223 { |
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224 int status = -1; |
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225 |
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226 msg = std::string (); |
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227 |
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228 #if defined (HAVE_READLINK) |
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229 char buf[MAXPATHLEN+1]; |
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230 |
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231 OCTAVE_LOCAL_BUFFER (char, p, path.length ()); |
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232 |
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233 strcpy (p, path.c_str ()); |
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234 |
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235 status = ::readlink (p, buf, MAXPATHLEN); |
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236 |
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237 if (status < 0) |
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238 { |
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239 using namespace std; |
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240 msg = ::strerror (errno); |
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241 } |
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242 else |
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243 { |
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244 buf[status] = '\0'; |
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245 result = std::string (buf); |
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246 status = 0; |
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247 } |
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248 #else |
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249 msg = NOT_SUPPORTED ("rename"); |
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250 #endif |
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251 |
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252 return status; |
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253 } |
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254 |
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255 // We provide a replacement for rename(). |
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256 |
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257 int |
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258 file_ops::rename (const std::string& from, const std::string& to) |
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259 { |
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260 std::string msg; |
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261 return rename (from, to, msg); |
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262 } |
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263 |
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2668
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264 int |
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265 file_ops::rename (const std::string& from, const std::string& to, |
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266 std::string& msg) |
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2668
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267 { |
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2937
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268 int status = -1; |
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269 |
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270 msg = std::string (); |
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271 |
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272 #if defined (HAVE_RENAME) |
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273 status = ::rename (from.c_str (), to.c_str ()); |
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274 |
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275 if (status < 0) |
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276 { |
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277 using namespace std; |
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278 msg = ::strerror (errno); |
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279 } |
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2937
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280 #else |
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281 msg = NOT_SUPPORTED ("rename"); |
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282 #endif |
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283 |
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284 return status; |
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285 } |
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286 |
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287 // We provide a replacement for rmdir(). |
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288 |
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289 int |
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290 file_ops::rmdir (const std::string& name) |
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291 { |
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3504
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292 std::string msg; |
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293 return rmdir (name, msg); |
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294 } |
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295 |
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296 int |
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297 file_ops::rmdir (const std::string& name, std::string& msg) |
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298 { |
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299 msg = std::string (); |
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300 |
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2937
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301 int status = -1; |
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302 |
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303 #if defined (HAVE_RMDIR) |
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304 status = ::rmdir (name.c_str ()); |
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305 |
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306 if (status < 0) |
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3504
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307 { |
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308 using namespace std; |
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309 msg = ::strerror (errno); |
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310 } |
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2937
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311 #else |
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312 msg = NOT_SUPPORTED ("rmdir"); |
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313 #endif |
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314 |
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315 return status; |
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316 } |
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317 |
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5476
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318 // And a version that works recursively. |
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319 |
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320 int |
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321 file_ops::recursive_rmdir (const std::string& name) |
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322 { |
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323 std::string msg; |
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324 return recursive_rmdir (name, msg); |
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325 } |
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326 |
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327 int |
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328 file_ops::recursive_rmdir (const std::string& name, std::string& msg) |
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329 { |
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330 msg = std::string (); |
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331 |
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332 int status = 0; |
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333 |
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334 dir_entry dir (name); |
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335 |
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336 if (dir) |
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337 { |
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338 string_vector dirlist = dir.read (); |
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339 |
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340 for (octave_idx_type i = 0; i < dirlist.length (); i++) |
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341 { |
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342 OCTAVE_QUIT; |
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343 |
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344 std::string nm = dirlist[i]; |
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345 |
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346 // Skip current directory and parent. |
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347 if (nm == "." || nm == "..") |
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348 continue; |
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349 |
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350 std::string fullnm = name + file_ops::dir_sep_str + nm; |
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351 |
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352 // Get info about the file. Don't follow links. |
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353 file_stat fs (fullnm, false); |
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354 |
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355 if (fs) |
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356 { |
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357 if (fs.is_dir ()) |
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358 { |
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359 status = recursive_rmdir (fullnm, msg); |
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360 |
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361 if (status < 0) |
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362 break; |
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363 } |
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364 else |
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365 { |
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366 status = unlink (fullnm, msg); |
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367 |
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368 if (status < 0) |
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369 break; |
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370 } |
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371 } |
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372 else |
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373 { |
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374 msg = fs.error (); |
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375 break; |
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376 } |
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377 } |
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378 |
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379 if (status >= 0) |
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6363
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380 { |
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381 dir.close (); |
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382 status = file_ops::rmdir (name, msg); |
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383 } |
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5476
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384 } |
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385 else |
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386 { |
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387 status = -1; |
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388 |
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389 msg = dir.error (); |
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390 } |
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391 |
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392 return status; |
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393 } |
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394 |
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5138
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395 std::string |
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396 file_ops::canonicalize_file_name (const std::string& name) |
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397 { |
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398 std::string msg; |
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399 return canonicalize_file_name (name, msg); |
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400 } |
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401 |
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402 std::string |
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403 file_ops::canonicalize_file_name (const std::string& name, std::string& msg) |
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404 { |
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405 msg = std::string (); |
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406 |
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407 std::string retval; |
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408 |
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409 #if defined (HAVE_CANONICALIZE_FILE_NAME) |
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410 |
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411 char *tmp = ::canonicalize_file_name (name.c_str ()); |
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412 |
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413 if (tmp) |
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414 { |
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415 retval = tmp; |
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416 ::free (tmp); |
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417 } |
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418 |
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419 #elif defined (HAVE_RESOLVEPATH) |
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420 |
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421 #if !defined (errno) |
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422 extern int errno; |
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423 #endif |
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424 |
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425 #if !defined (__set_errno) |
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426 # define __set_errno(Val) errno = (Val) |
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427 #endif |
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428 |
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429 if (name.empty ()) |
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430 { |
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431 __set_errno (ENOENT); |
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432 return retval; |
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433 } |
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434 |
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435 // All known hosts with resolvepath (e.g. Solaris 7) don't turn |
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436 // relative names into absolute ones, so prepend the working |
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437 // directory if the path is not absolute. |
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438 |
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5149
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439 std::string absolute_name |
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440 = octave_env::make_absolute (name, octave_env::getcwd ()); |
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5138
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441 |
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5149
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442 size_t resolved_size = absolute_name.length (); |
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5138
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443 |
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6208
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444 while (true) |
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5138
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445 { |
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446 resolved_size = 2 * resolved_size + 1; |
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447 |
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448 OCTAVE_LOCAL_BUFFER (char, resolved, resolved_size); |
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449 |
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5149
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450 int resolved_len |
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451 = ::resolvepath (absolute_name.c_str (), resolved, resolved_size); |
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5138
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452 |
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453 if (resolved_len < 0) |
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454 break; |
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455 |
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456 if (resolved_len < resolved_size) |
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457 { |
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458 retval = resolved; |
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459 break; |
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460 } |
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461 } |
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462 |
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6208
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463 #elif defined (__WIN32__) |
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464 |
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465 int n = 1024; |
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466 |
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467 std::string win_path (n, '\0'); |
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468 |
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469 while (true) |
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470 { |
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471 int status = GetFullPathName (name.c_str (), n, &win_path[0], NULL); |
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472 |
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473 if (status == 0) |
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474 break; |
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475 else if (status < n) |
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476 { |
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477 win_path.resize (status); |
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478 retval = win_path; |
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479 break; |
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480 } |
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481 else |
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482 { |
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|
483 n *= 2; |
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|
484 win_path.resize (n); |
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|
485 } |
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|
486 } |
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487 |
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6271
|
488 #elif defined (HAVE_REALPATH) |
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|
489 |
|
|
490 #if !defined (__set_errno) |
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|
491 # define __set_errno(Val) errno = (Val) |
|
|
492 #endif |
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|
493 |
|
|
494 if (name.empty ()) |
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|
495 { |
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|
496 __set_errno (ENOENT); |
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|
497 return retval; |
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|
498 } |
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|
499 |
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|
500 OCTAVE_LOCAL_BUFFER (char, buf, PATH_MAX); |
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501 |
|
6273
|
502 if (::realpath (name.c_str (), buf)) |
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|
503 retval = buf; |
|
6271
|
504 |
|
5138
|
505 #else |
|
|
506 |
|
5775
|
507 // FIXME -- provide replacement here... |
|
5138
|
508 retval = name; |
|
|
509 |
|
|
510 #endif |
|
|
511 |
|
|
512 if (retval.empty ()) |
|
|
513 { |
|
|
514 using namespace std; |
|
|
515 msg = ::strerror (errno); |
|
|
516 } |
|
|
517 |
|
|
518 return retval; |
|
|
519 } |
|
|
520 |
|
2433
|
521 // We provide a replacement for tempnam(). |
|
|
522 |
|
3504
|
523 std::string |
|
|
524 file_ops::tempnam (const std::string& dir, const std::string& pfx) |
|
1802
|
525 { |
|
3504
|
526 std::string msg; |
|
2937
|
527 return tempnam (dir, pfx, msg); |
|
|
528 } |
|
|
529 |
|
3504
|
530 std::string |
|
|
531 file_ops::tempnam (const std::string& dir, const std::string& pfx, |
|
|
532 std::string& msg) |
|
2937
|
533 { |
|
3504
|
534 msg = std::string (); |
|
2937
|
535 |
|
3504
|
536 std::string retval; |
|
2937
|
537 |
|
|
538 const char *pdir = dir.empty () ? 0 : dir.c_str (); |
|
1802
|
539 |
|
2937
|
540 const char *ppfx = pfx.empty () ? 0 : pfx.c_str (); |
|
|
541 |
|
|
542 char *tmp = ::tempnam (pdir, ppfx); |
|
1802
|
543 |
|
|
544 if (tmp) |
|
|
545 { |
|
|
546 retval = tmp; |
|
|
547 |
|
2937
|
548 ::free (tmp); |
|
1802
|
549 } |
|
|
550 else |
|
3504
|
551 { |
|
|
552 using namespace std; |
|
|
553 msg = ::strerror (errno); |
|
|
554 } |
|
1802
|
555 |
|
|
556 return retval; |
|
|
557 } |
|
|
558 |
|
3040
|
559 // The following tilde-expansion code was stolen and adapted from |
|
|
560 // readline. |
|
2926
|
561 |
|
3040
|
562 // The default value of tilde_additional_prefixes. This is set to |
|
|
563 // whitespace preceding a tilde so that simple programs which do not |
|
|
564 // perform any word separation get desired behaviour. |
|
|
565 static const char *default_prefixes[] = { " ~", "\t~", ":~", 0 }; |
|
|
566 |
|
|
567 // The default value of tilde_additional_suffixes. This is set to |
|
|
568 // whitespace or newline so that simple programs which do not perform |
|
|
569 // any word separation get desired behaviour. |
|
|
570 static const char *default_suffixes[] = { " ", "\n", ":", 0 }; |
|
|
571 |
|
|
572 // If non-null, this contains the address of a function that the |
|
|
573 // application wants called before trying the standard tilde |
|
|
574 // expansions. The function is called with the text sans tilde, and |
|
|
575 // returns a malloc()'ed string which is the expansion, or a NULL |
|
|
576 // pointer if the expansion fails. |
|
|
577 file_ops::tilde_expansion_hook file_ops::tilde_expansion_preexpansion_hook = 0; |
|
|
578 |
|
|
579 // If non-null, this contains the address of a function to call if the |
|
|
580 // standard meaning for expanding a tilde fails. The function is |
|
|
581 // called with the text (sans tilde, as in "foo"), and returns a |
|
|
582 // malloc()'ed string which is the expansion, or a NULL pointer if |
|
|
583 // there is no expansion. |
|
|
584 file_ops::tilde_expansion_hook file_ops::tilde_expansion_failure_hook = 0; |
|
|
585 |
|
|
586 // When non-null, this is a NULL terminated array of strings which are |
|
|
587 // duplicates for a tilde prefix. Bash uses this to expand `=~' and |
|
|
588 // `:~'. |
|
|
589 string_vector file_ops::tilde_additional_prefixes = default_prefixes; |
|
|
590 |
|
|
591 // When non-null, this is a NULL terminated array of strings which |
|
|
592 // match the end of a username, instead of just "/". Bash sets this |
|
|
593 // to `:' and `=~'. |
|
|
594 string_vector file_ops::tilde_additional_suffixes = default_suffixes; |
|
|
595 |
|
|
596 // Find the start of a tilde expansion in S, and return the index |
|
|
597 // of the tilde which starts the expansion. Place the length of the |
|
|
598 // text which identified this tilde starter in LEN, excluding the |
|
|
599 // tilde itself. |
|
|
600 |
|
|
601 static size_t |
|
3504
|
602 tilde_find_prefix (const std::string& s, size_t& len) |
|
3040
|
603 { |
|
|
604 len = 0; |
|
|
605 |
|
|
606 size_t s_len = s.length (); |
|
|
607 |
|
|
608 if (s_len == 0 || s[0] == '~') |
|
|
609 return 0; |
|
|
610 |
|
|
611 string_vector prefixes = file_ops::tilde_additional_prefixes; |
|
|
612 |
|
|
613 if (! prefixes.empty ()) |
|
|
614 { |
|
|
615 for (size_t i = 0; i < s_len; i++) |
|
|
616 { |
|
|
617 for (int j = 0; j < prefixes.length (); j++) |
|
|
618 { |
|
|
619 size_t pfx_len = prefixes[j].length (); |
|
|
620 |
|
|
621 if (prefixes[j].compare (s.substr (i, pfx_len)) == 0) |
|
|
622 { |
|
|
623 len = pfx_len - 1; |
|
|
624 return i + len; |
|
|
625 } |
|
|
626 } |
|
|
627 } |
|
|
628 } |
|
|
629 |
|
|
630 return s_len; |
|
|
631 } |
|
|
632 |
|
|
633 // Find the end of a tilde expansion in S, and return the index |
|
|
634 // of the character which ends the tilde definition. |
|
|
635 |
|
|
636 static size_t |
|
3504
|
637 tilde_find_suffix (const std::string& s) |
|
3040
|
638 { |
|
|
639 size_t s_len = s.length (); |
|
|
640 |
|
|
641 string_vector suffixes = file_ops::tilde_additional_suffixes; |
|
|
642 |
|
|
643 size_t i = 0; |
|
|
644 |
|
|
645 for ( ; i < s_len; i++) |
|
|
646 { |
|
4101
|
647 if (s[i] == file_ops::dir_sep_char) |
|
3040
|
648 break; |
|
|
649 |
|
|
650 if (! suffixes.empty ()) |
|
|
651 { |
|
|
652 for (int j = 0; j < suffixes.length (); j++) |
|
|
653 { |
|
|
654 size_t sfx_len = suffixes[j].length (); |
|
|
655 |
|
|
656 if (suffixes[j].compare (s.substr (i, sfx_len)) == 0) |
|
|
657 return i; |
|
|
658 } |
|
|
659 } |
|
|
660 } |
|
|
661 |
|
|
662 return i; |
|
|
663 } |
|
|
664 |
|
|
665 // Take FNAME and return the tilde prefix we want expanded. |
|
|
666 |
|
3504
|
667 static std::string |
|
|
668 isolate_tilde_prefix (const std::string& fname) |
|
3040
|
669 { |
|
|
670 size_t f_len = fname.length (); |
|
|
671 |
|
|
672 size_t len = 1; |
|
|
673 |
|
4101
|
674 while (len < f_len && fname[len] != file_ops::dir_sep_char) |
|
3040
|
675 len++; |
|
|
676 |
|
|
677 return fname.substr (1, len); |
|
|
678 } |
|
|
679 |
|
|
680 // Do the work of tilde expansion on FILENAME. FILENAME starts with a |
|
|
681 // tilde. |
|
|
682 |
|
3504
|
683 static std::string |
|
|
684 tilde_expand_word (const std::string& filename) |
|
3040
|
685 { |
|
|
686 size_t f_len = filename.length (); |
|
|
687 |
|
|
688 if (f_len == 0 || filename[0] != '~') |
|
|
689 return filename; |
|
|
690 |
|
|
691 // A leading `~/' or a bare `~' is *always* translated to the value |
|
|
692 // of $HOME or the home directory of the current user, regardless of |
|
|
693 // any preexpansion hook. |
|
|
694 |
|
4101
|
695 if (f_len == 1 || filename[1] == file_ops::dir_sep_char) |
|
3040
|
696 return octave_env::get_home_directory () + filename.substr (1); |
|
|
697 |
|
3504
|
698 std::string username = isolate_tilde_prefix (filename); |
|
3040
|
699 |
|
|
700 size_t user_len = username.length (); |
|
|
701 |
|
3504
|
702 std::string dirname; |
|
3040
|
703 |
|
|
704 if (file_ops::tilde_expansion_preexpansion_hook) |
|
|
705 { |
|
3504
|
706 std::string expansion |
|
3040
|
707 = file_ops::tilde_expansion_preexpansion_hook (username); |
|
|
708 |
|
|
709 if (! expansion.empty ()) |
|
3074
|
710 return expansion + filename.substr (user_len+1); |
|
3040
|
711 } |
|
|
712 |
|
|
713 // No preexpansion hook, or the preexpansion hook failed. Look in the |
|
|
714 // password database. |
|
|
715 |
|
|
716 octave_passwd pw = octave_passwd::getpwnam (username); |
|
|
717 |
|
|
718 if (! pw) |
|
|
719 { |
|
|
720 // If the calling program has a special syntax for expanding tildes, |
|
|
721 // and we couldn't find a standard expansion, then let them try. |
|
|
722 |
|
|
723 if (file_ops::tilde_expansion_failure_hook) |
|
|
724 { |
|
3504
|
725 std::string expansion |
|
3040
|
726 = file_ops::tilde_expansion_failure_hook (username); |
|
|
727 |
|
|
728 if (! expansion.empty ()) |
|
3074
|
729 dirname = expansion + filename.substr (user_len+1); |
|
3040
|
730 } |
|
|
731 |
|
|
732 // If we don't have a failure hook, or if the failure hook did not |
|
|
733 // expand the tilde, return a copy of what we were passed. |
|
|
734 |
|
|
735 if (dirname.length () == 0) |
|
|
736 dirname = filename; |
|
|
737 } |
|
|
738 else |
|
3074
|
739 dirname = pw.dir () + filename.substr (user_len+1); |
|
3040
|
740 |
|
|
741 return dirname; |
|
|
742 } |
|
|
743 |
|
|
744 // If NAME has a leading ~ or ~user, Unix-style, expand it to the |
|
|
745 // user's home directory. If no ~, or no <pwd.h>, just return NAME. |
|
|
746 |
|
3504
|
747 std::string |
|
|
748 file_ops::tilde_expand (const std::string& name) |
|
2926
|
749 { |
|
3504
|
750 std::string result; |
|
2926
|
751 |
|
3040
|
752 size_t name_len = name.length (); |
|
2926
|
753 |
|
3040
|
754 // Scan through S expanding tildes as we come to them. |
|
2926
|
755 |
|
3040
|
756 size_t pos = 0; |
|
2926
|
757 |
|
3040
|
758 while (1) |
|
|
759 { |
|
|
760 if (pos > name_len) |
|
|
761 break; |
|
2926
|
762 |
|
3040
|
763 size_t len; |
|
|
764 |
|
|
765 // Make START point to the tilde which starts the expansion. |
|
2926
|
766 |
|
3040
|
767 size_t start = tilde_find_prefix (name.substr (pos), len); |
|
|
768 |
|
|
769 result.append (name.substr (pos, start)); |
|
2926
|
770 |
|
3040
|
771 // Advance STRING to the starting tilde. |
|
|
772 |
|
|
773 pos += start; |
|
2926
|
774 |
|
3040
|
775 // Make FINI be the index of one after the last character of the |
|
|
776 // username. |
|
2926
|
777 |
|
3040
|
778 size_t fini = tilde_find_suffix (name.substr (pos)); |
|
2926
|
779 |
|
3040
|
780 // If both START and FINI are zero, we are all done. |
|
2926
|
781 |
|
3040
|
782 if (! (start || fini)) |
|
|
783 break; |
|
2926
|
784 |
|
3040
|
785 // Expand the entire tilde word, and copy it into RESULT. |
|
2947
|
786 |
|
3504
|
787 std::string tilde_word = name.substr (pos, fini); |
|
3040
|
788 |
|
|
789 pos += fini; |
|
2926
|
790 |
|
3504
|
791 std::string expansion = tilde_expand_word (tilde_word); |
|
3040
|
792 |
|
|
793 result.append (expansion); |
|
2926
|
794 } |
|
|
795 |
|
3040
|
796 return result; |
|
2926
|
797 } |
|
|
798 |
|
|
799 // A vector version of the above. |
|
|
800 |
|
|
801 string_vector |
|
|
802 file_ops::tilde_expand (const string_vector& names) |
|
|
803 { |
|
|
804 string_vector retval; |
|
|
805 |
|
|
806 int n = names.length (); |
|
|
807 |
|
|
808 retval.resize (n); |
|
|
809 |
|
|
810 for (int i = 0; i < n; i++) |
|
|
811 retval[i] = file_ops::tilde_expand (names[i]); |
|
|
812 |
|
|
813 return retval; |
|
|
814 } |
|
1802
|
815 |
|
1765
|
816 int |
|
2926
|
817 file_ops::umask (mode_t mode) |
|
1765
|
818 { |
|
|
819 #if defined (HAVE_UMASK) |
|
2926
|
820 return ::umask (mode); |
|
1765
|
821 #else |
|
|
822 return 0; |
|
|
823 #endif |
|
|
824 } |
|
|
825 |
|
1773
|
826 int |
|
3504
|
827 file_ops::unlink (const std::string& name) |
|
1773
|
828 { |
|
3504
|
829 std::string msg; |
|
2937
|
830 return unlink (name, msg); |
|
1773
|
831 } |
|
|
832 |
|
2668
|
833 int |
|
3504
|
834 file_ops::unlink (const std::string& name, std::string& msg) |
|
2668
|
835 { |
|
3504
|
836 msg = std::string (); |
|
2668
|
837 |
|
2937
|
838 int status = -1; |
|
|
839 |
|
|
840 #if defined (HAVE_UNLINK) |
|
|
841 status = ::unlink (name.c_str ()); |
|
2668
|
842 |
|
|
843 if (status < 0) |
|
3504
|
844 { |
|
|
845 using namespace std; |
|
|
846 msg = ::strerror (errno); |
|
|
847 } |
|
2937
|
848 #else |
|
|
849 msg = NOT_SUPPORTED ("unlink"); |
|
|
850 #endif |
|
2668
|
851 |
|
|
852 return status; |
|
|
853 } |
|
|
854 |
|
4097
|
855 bool |
|
|
856 file_ops::is_dir_sep (char c) |
|
|
857 { |
|
4101
|
858 return dir_sep_chars.find (c) != NPOS; |
|
4097
|
859 } |
|
|
860 |
|
1765
|
861 /* |
|
|
862 ;;; Local Variables: *** |
|
|
863 ;;; mode: C++ *** |
|
|
864 ;;; End: *** |
|
|
865 */ |
