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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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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 #ifdef HAVE_SYS_STAT_H |
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45 #include <sys/stat.h> |
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46 #endif |
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47 |
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48 #ifdef HAVE_FCNTL_H |
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49 #include <fcntl.h> |
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50 #endif |
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51 |
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52 #if defined (HAVE_UTIME_H) |
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53 #include <utime.h> |
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54 #elif defined (HAVE_SYS_UTIME_H) |
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55 #include <sys/utime.h> |
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56 #endif |
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57 |
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58 #include "dir-ops.h" |
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59 #include "file-ops.h" |
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60 #include "file-stat.h" |
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61 #include "oct-env.h" |
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62 #include "oct-passwd.h" |
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63 #include "pathlen.h" |
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64 #include "quit.h" |
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65 #include "statdefs.h" |
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66 #include "str-vec.h" |
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67 |
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68 #define NOT_SUPPORTED(nm) \ |
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69 nm ": not supported on this system" |
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70 |
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71 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) \ |
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72 && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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73 char file_ops::dir_sep_char = '\\'; |
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74 std::string file_ops::dir_sep_str ("\\"); |
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75 #else |
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76 char file_ops::dir_sep_char = '/'; |
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77 std::string file_ops::dir_sep_str ("/"); |
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78 #endif |
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79 |
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80 #if defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) |
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81 std::string file_ops::dir_sep_chars ("/\\"); |
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82 #else |
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83 std::string file_ops::dir_sep_chars (file_ops::dir_sep_str); |
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84 #endif |
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85 |
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86 #if ! defined (HAVE_CHMOD) && defined (HAVE__CHMOD) |
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87 #define chmod _chmod |
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88 #define HAVE_CHMOD 1 |
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89 #endif |
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90 |
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91 #if ! defined (HAVE_UTIME) \ |
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92 && (defined (HAVE__UTIME) || defined (HAVE__UTIME32)) |
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93 #define utime _utime |
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94 #define utimbuf _utimbuf |
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95 #define HAVE_UTIME 1 |
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96 #endif |
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97 |
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98 #if ! defined (S_IFMT) && defined (_S_IFMT) |
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99 #define S_IFMT _S_IFMT |
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100 #endif |
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101 |
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102 #if ! defined (O_RDONLY) && defined (_O_RDONLY) |
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103 #define O_RDONLY _O_RDONLY |
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104 #endif |
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105 |
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106 #if ! defined (O_WRONLY) && defined (_O_WRONLY) |
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107 #define O_WRONLY _O_WRONLY |
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108 #endif |
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109 |
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110 #if ! defined (O_CREAT) && defined (_O_CREAT) |
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111 #define O_CREAT _O_CREAT |
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112 #endif |
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113 |
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114 #ifndef O_BINARY |
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115 #ifdef _O_BINARY |
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116 #define O_BINARY _O_BINARY |
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117 #else |
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118 #define O_BINARY 0 |
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119 #endif |
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120 #endif |
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121 |
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122 // We provide a replacement for mkdir(). |
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123 |
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124 int |
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125 file_ops::mkdir (const std::string& name, mode_t mode) |
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126 { |
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127 std::string msg; |
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128 return mkdir (name, mode, msg); |
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129 } |
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130 |
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131 int |
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132 file_ops::mkdir (const std::string& name, mode_t mode, std::string& msg) |
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133 { |
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134 msg = std::string (); |
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135 |
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136 int status = -1; |
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137 |
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138 #if defined (HAVE_MKDIR) |
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139 |
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140 #if defined (MKDIR_TAKES_ONE_ARG) |
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141 status = ::mkdir (name.c_str ()); |
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142 #else |
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143 status = ::mkdir (name.c_str (), mode); |
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144 #endif |
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145 |
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146 if (status < 0) |
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147 { |
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148 using namespace std; |
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149 msg = ::strerror (errno); |
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150 } |
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151 #else |
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152 msg = NOT_SUPPORTED ("mkdir"); |
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153 #endif |
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154 |
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155 return status; |
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156 } |
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157 |
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158 // I don't know how to emulate this on systems that don't provide it. |
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159 |
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160 int |
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161 file_ops::mkfifo (const std::string& name, mode_t mode) |
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162 { |
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163 std::string msg; |
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164 return mkfifo (name, mode, msg); |
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165 } |
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166 |
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167 int |
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168 file_ops::mkfifo (const std::string& name, mode_t mode, std::string& msg) |
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169 { |
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170 msg = std::string (); |
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171 |
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172 int status = -1; |
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173 |
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174 #if defined (HAVE_MKFIFO) |
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175 status = ::mkfifo (name.c_str (), mode); |
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176 |
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177 if (status < 0) |
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178 { |
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179 using namespace std; |
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180 msg = ::strerror (errno); |
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181 } |
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182 #else |
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183 msg = NOT_SUPPORTED ("mkfifo"); |
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184 #endif |
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185 |
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186 return status; |
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187 } |
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188 |
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189 // I don't know how to emulate this on systems that don't provide it. |
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190 |
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191 int |
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192 file_ops::link (const std::string& old_name, const std::string& new_name) |
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193 { |
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194 std::string msg; |
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195 return link (old_name, new_name, msg); |
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196 } |
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197 |
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198 int |
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199 file_ops::link (const std::string& old_name, |
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200 const std::string& new_name, std::string& msg) |
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201 { |
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202 msg = std::string (); |
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203 |
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204 int status = -1; |
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205 |
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206 #if defined (HAVE_LINK) |
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207 status = ::link (old_name.c_str (), new_name.c_str ()); |
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208 |
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209 if (status < 0) |
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210 { |
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211 using namespace std; |
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212 msg = ::strerror (errno); |
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213 } |
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214 #else |
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215 msg = NOT_SUPPORTED ("link"); |
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216 #endif |
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217 |
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218 return status; |
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219 } |
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220 |
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221 // I don't know how to emulate this on systems that don't provide it. |
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222 |
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223 int |
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224 file_ops::symlink (const std::string& old_name, const std::string& new_name) |
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225 { |
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226 std::string msg; |
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227 return symlink (old_name, new_name, msg); |
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228 } |
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229 |
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230 int |
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231 file_ops::symlink (const std::string& old_name, |
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232 const std::string& new_name, std::string& msg) |
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233 { |
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234 msg = std::string (); |
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235 |
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236 int status = -1; |
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237 |
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238 #if defined (HAVE_SYMLINK) |
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239 |
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240 OCTAVE_LOCAL_BUFFER (char, old_nm, old_name.length ()); |
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241 OCTAVE_LOCAL_BUFFER (char, new_nm, new_name.length ()); |
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242 |
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243 strcpy (old_nm, old_name.c_str ()); |
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244 strcpy (new_nm, new_name.c_str ()); |
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245 |
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246 status = ::symlink (old_nm, new_nm); |
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247 |
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248 if (status < 0) |
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249 { |
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250 using namespace std; |
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251 msg = ::strerror (errno); |
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252 } |
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253 #else |
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254 msg = NOT_SUPPORTED ("symlink"); |
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255 #endif |
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256 |
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257 return status; |
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258 } |
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259 |
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260 // We provide a replacement for rename(). |
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261 |
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262 int |
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263 file_ops::readlink (const std::string& path, std::string& result) |
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264 { |
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265 std::string msg; |
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266 return readlink (path, result, msg); |
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267 } |
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268 |
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269 int |
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270 file_ops::readlink (const std::string& path, std::string& result, |
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271 std::string& msg) |
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272 { |
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273 int status = -1; |
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274 |
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275 msg = std::string (); |
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276 |
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277 #if defined (HAVE_READLINK) |
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278 char buf[MAXPATHLEN+1]; |
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279 |
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280 OCTAVE_LOCAL_BUFFER (char, p, path.length ()); |
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281 |
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282 strcpy (p, path.c_str ()); |
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283 |
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284 status = ::readlink (p, buf, MAXPATHLEN); |
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285 |
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286 if (status < 0) |
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287 { |
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288 using namespace std; |
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289 msg = ::strerror (errno); |
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290 } |
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291 else |
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292 { |
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293 buf[status] = '\0'; |
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294 result = std::string (buf); |
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295 status = 0; |
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296 } |
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297 #else |
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298 msg = NOT_SUPPORTED ("rename"); |
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299 #endif |
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300 |
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301 return status; |
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302 } |
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303 |
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304 // We provide a replacement for rename(). |
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305 |
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306 int |
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307 file_ops::rename (const std::string& from, const std::string& to) |
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308 { |
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309 std::string msg; |
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310 return rename (from, to, msg); |
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311 } |
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312 |
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313 int |
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314 file_ops::rename (const std::string& from, const std::string& to, |
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315 std::string& msg) |
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316 { |
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317 int status = -1; |
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318 |
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319 msg = std::string (); |
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320 |
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321 #if defined (HAVE_RENAME) |
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322 status = ::rename (from.c_str (), to.c_str ()); |
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323 |
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324 if (status < 0) |
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325 { |
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326 using namespace std; |
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327 msg = ::strerror (errno); |
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328 } |
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329 #else |
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330 msg = NOT_SUPPORTED ("rename"); |
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331 #endif |
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332 |
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333 return status; |
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334 } |
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335 |
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336 // We provide a replacement for rmdir(). |
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337 |
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338 int |
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339 file_ops::rmdir (const std::string& name) |
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340 { |
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341 std::string msg; |
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342 return rmdir (name, msg); |
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343 } |
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344 |
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345 int |
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346 file_ops::rmdir (const std::string& name, std::string& msg) |
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347 { |
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348 msg = std::string (); |
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349 |
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350 int status = -1; |
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351 |
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352 #if defined (HAVE_RMDIR) |
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353 status = ::rmdir (name.c_str ()); |
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354 |
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355 if (status < 0) |
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356 { |
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357 using namespace std; |
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358 msg = ::strerror (errno); |
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359 } |
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2937
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360 #else |
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361 msg = NOT_SUPPORTED ("rmdir"); |
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362 #endif |
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363 |
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364 return status; |
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365 } |
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366 |
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367 // And a version that works recursively. |
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368 |
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369 int |
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370 file_ops::recursive_rmdir (const std::string& name) |
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371 { |
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372 std::string msg; |
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373 return recursive_rmdir (name, msg); |
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374 } |
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375 |
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376 int |
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377 file_ops::recursive_rmdir (const std::string& name, std::string& msg) |
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378 { |
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379 msg = std::string (); |
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380 |
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381 int status = 0; |
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382 |
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383 dir_entry dir (name); |
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384 |
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385 if (dir) |
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386 { |
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387 string_vector dirlist = dir.read (); |
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388 |
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389 for (octave_idx_type i = 0; i < dirlist.length (); i++) |
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390 { |
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391 OCTAVE_QUIT; |
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392 |
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393 std::string nm = dirlist[i]; |
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394 |
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395 // Skip current directory and parent. |
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396 if (nm == "." || nm == "..") |
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397 continue; |
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398 |
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399 std::string fullnm = name + file_ops::dir_sep_str + nm; |
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400 |
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401 // Get info about the file. Don't follow links. |
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402 file_stat fs (fullnm, false); |
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403 |
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404 if (fs) |
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405 { |
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406 if (fs.is_dir ()) |
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407 { |
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408 status = recursive_rmdir (fullnm, msg); |
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409 |
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410 if (status < 0) |
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411 break; |
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412 } |
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413 else |
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414 { |
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415 status = unlink (fullnm, msg); |
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416 |
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417 if (status < 0) |
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418 break; |
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419 } |
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420 } |
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421 else |
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422 { |
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423 msg = fs.error (); |
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424 break; |
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425 } |
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426 } |
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427 |
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428 if (status >= 0) |
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429 { |
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430 dir.close (); |
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431 status = file_ops::rmdir (name, msg); |
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432 } |
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5476
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433 } |
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434 else |
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435 { |
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436 status = -1; |
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437 |
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438 msg = dir.error (); |
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439 } |
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440 |
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441 return status; |
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442 } |
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443 |
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5138
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444 std::string |
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445 file_ops::canonicalize_file_name (const std::string& name) |
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446 { |
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447 std::string msg; |
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448 return canonicalize_file_name (name, msg); |
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449 } |
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450 |
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451 std::string |
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452 file_ops::canonicalize_file_name (const std::string& name, std::string& msg) |
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453 { |
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454 msg = std::string (); |
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455 |
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456 std::string retval; |
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457 |
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458 #if defined (HAVE_CANONICALIZE_FILE_NAME) |
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459 |
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460 char *tmp = ::canonicalize_file_name (name.c_str ()); |
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461 |
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462 if (tmp) |
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463 { |
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464 retval = tmp; |
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465 ::free (tmp); |
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466 } |
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467 |
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468 #elif defined (HAVE_RESOLVEPATH) |
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469 |
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470 #if !defined (errno) |
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471 extern int errno; |
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472 #endif |
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473 |
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474 #if !defined (__set_errno) |
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475 # define __set_errno(Val) errno = (Val) |
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476 #endif |
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477 |
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478 if (name.empty ()) |
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479 { |
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480 __set_errno (ENOENT); |
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481 return retval; |
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482 } |
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483 |
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484 // All known hosts with resolvepath (e.g. Solaris 7) don't turn |
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485 // relative names into absolute ones, so prepend the working |
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486 // directory if the path is not absolute. |
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487 |
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5149
|
488 std::string absolute_name |
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489 = octave_env::make_absolute (name, octave_env::getcwd ()); |
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5138
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490 |
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5149
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491 size_t resolved_size = absolute_name.length (); |
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5138
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492 |
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6208
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493 while (true) |
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5138
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494 { |
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495 resolved_size = 2 * resolved_size + 1; |
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496 |
|
|
497 OCTAVE_LOCAL_BUFFER (char, resolved, resolved_size); |
|
|
498 |
|
5149
|
499 int resolved_len |
|
|
500 = ::resolvepath (absolute_name.c_str (), resolved, resolved_size); |
|
5138
|
501 |
|
|
502 if (resolved_len < 0) |
|
|
503 break; |
|
|
504 |
|
|
505 if (resolved_len < resolved_size) |
|
|
506 { |
|
|
507 retval = resolved; |
|
|
508 break; |
|
|
509 } |
|
|
510 } |
|
|
511 |
|
6208
|
512 #elif defined (__WIN32__) |
|
|
513 |
|
|
514 int n = 1024; |
|
|
515 |
|
|
516 std::string win_path (n, '\0'); |
|
|
517 |
|
|
518 while (true) |
|
|
519 { |
|
|
520 int status = GetFullPathName (name.c_str (), n, &win_path[0], NULL); |
|
|
521 |
|
|
522 if (status == 0) |
|
|
523 break; |
|
|
524 else if (status < n) |
|
|
525 { |
|
|
526 win_path.resize (status); |
|
|
527 retval = win_path; |
|
|
528 break; |
|
|
529 } |
|
|
530 else |
|
|
531 { |
|
|
532 n *= 2; |
|
|
533 win_path.resize (n); |
|
|
534 } |
|
|
535 } |
|
|
536 |
|
6271
|
537 #elif defined (HAVE_REALPATH) |
|
|
538 |
|
|
539 #if !defined (__set_errno) |
|
|
540 # define __set_errno(Val) errno = (Val) |
|
|
541 #endif |
|
|
542 |
|
|
543 if (name.empty ()) |
|
|
544 { |
|
|
545 __set_errno (ENOENT); |
|
|
546 return retval; |
|
|
547 } |
|
|
548 |
|
|
549 OCTAVE_LOCAL_BUFFER (char, buf, PATH_MAX); |
|
|
550 |
|
6273
|
551 if (::realpath (name.c_str (), buf)) |
|
|
552 retval = buf; |
|
6271
|
553 |
|
5138
|
554 #else |
|
|
555 |
|
5775
|
556 // FIXME -- provide replacement here... |
|
5138
|
557 retval = name; |
|
|
558 |
|
|
559 #endif |
|
|
560 |
|
|
561 if (retval.empty ()) |
|
|
562 { |
|
|
563 using namespace std; |
|
|
564 msg = ::strerror (errno); |
|
|
565 } |
|
|
566 |
|
|
567 return retval; |
|
|
568 } |
|
|
569 |
|
2433
|
570 // We provide a replacement for tempnam(). |
|
|
571 |
|
3504
|
572 std::string |
|
|
573 file_ops::tempnam (const std::string& dir, const std::string& pfx) |
|
1802
|
574 { |
|
3504
|
575 std::string msg; |
|
2937
|
576 return tempnam (dir, pfx, msg); |
|
|
577 } |
|
|
578 |
|
3504
|
579 std::string |
|
|
580 file_ops::tempnam (const std::string& dir, const std::string& pfx, |
|
|
581 std::string& msg) |
|
2937
|
582 { |
|
3504
|
583 msg = std::string (); |
|
2937
|
584 |
|
3504
|
585 std::string retval; |
|
2937
|
586 |
|
|
587 const char *pdir = dir.empty () ? 0 : dir.c_str (); |
|
1802
|
588 |
|
2937
|
589 const char *ppfx = pfx.empty () ? 0 : pfx.c_str (); |
|
|
590 |
|
|
591 char *tmp = ::tempnam (pdir, ppfx); |
|
1802
|
592 |
|
|
593 if (tmp) |
|
|
594 { |
|
|
595 retval = tmp; |
|
|
596 |
|
2937
|
597 ::free (tmp); |
|
1802
|
598 } |
|
|
599 else |
|
3504
|
600 { |
|
|
601 using namespace std; |
|
|
602 msg = ::strerror (errno); |
|
|
603 } |
|
1802
|
604 |
|
|
605 return retval; |
|
|
606 } |
|
|
607 |
|
3040
|
608 // The following tilde-expansion code was stolen and adapted from |
|
|
609 // readline. |
|
2926
|
610 |
|
3040
|
611 // The default value of tilde_additional_prefixes. This is set to |
|
|
612 // whitespace preceding a tilde so that simple programs which do not |
|
|
613 // perform any word separation get desired behaviour. |
|
|
614 static const char *default_prefixes[] = { " ~", "\t~", ":~", 0 }; |
|
|
615 |
|
|
616 // The default value of tilde_additional_suffixes. This is set to |
|
|
617 // whitespace or newline so that simple programs which do not perform |
|
|
618 // any word separation get desired behaviour. |
|
|
619 static const char *default_suffixes[] = { " ", "\n", ":", 0 }; |
|
|
620 |
|
|
621 // If non-null, this contains the address of a function that the |
|
|
622 // application wants called before trying the standard tilde |
|
|
623 // expansions. The function is called with the text sans tilde, and |
|
|
624 // returns a malloc()'ed string which is the expansion, or a NULL |
|
|
625 // pointer if the expansion fails. |
|
|
626 file_ops::tilde_expansion_hook file_ops::tilde_expansion_preexpansion_hook = 0; |
|
|
627 |
|
|
628 // If non-null, this contains the address of a function to call if the |
|
|
629 // standard meaning for expanding a tilde fails. The function is |
|
|
630 // called with the text (sans tilde, as in "foo"), and returns a |
|
|
631 // malloc()'ed string which is the expansion, or a NULL pointer if |
|
|
632 // there is no expansion. |
|
|
633 file_ops::tilde_expansion_hook file_ops::tilde_expansion_failure_hook = 0; |
|
|
634 |
|
|
635 // When non-null, this is a NULL terminated array of strings which are |
|
|
636 // duplicates for a tilde prefix. Bash uses this to expand `=~' and |
|
|
637 // `:~'. |
|
|
638 string_vector file_ops::tilde_additional_prefixes = default_prefixes; |
|
|
639 |
|
|
640 // When non-null, this is a NULL terminated array of strings which |
|
|
641 // match the end of a username, instead of just "/". Bash sets this |
|
|
642 // to `:' and `=~'. |
|
|
643 string_vector file_ops::tilde_additional_suffixes = default_suffixes; |
|
|
644 |
|
|
645 // Find the start of a tilde expansion in S, and return the index |
|
|
646 // of the tilde which starts the expansion. Place the length of the |
|
|
647 // text which identified this tilde starter in LEN, excluding the |
|
|
648 // tilde itself. |
|
|
649 |
|
|
650 static size_t |
|
3504
|
651 tilde_find_prefix (const std::string& s, size_t& len) |
|
3040
|
652 { |
|
|
653 len = 0; |
|
|
654 |
|
|
655 size_t s_len = s.length (); |
|
|
656 |
|
|
657 if (s_len == 0 || s[0] == '~') |
|
|
658 return 0; |
|
|
659 |
|
|
660 string_vector prefixes = file_ops::tilde_additional_prefixes; |
|
|
661 |
|
|
662 if (! prefixes.empty ()) |
|
|
663 { |
|
|
664 for (size_t i = 0; i < s_len; i++) |
|
|
665 { |
|
|
666 for (int j = 0; j < prefixes.length (); j++) |
|
|
667 { |
|
|
668 size_t pfx_len = prefixes[j].length (); |
|
|
669 |
|
|
670 if (prefixes[j].compare (s.substr (i, pfx_len)) == 0) |
|
|
671 { |
|
|
672 len = pfx_len - 1; |
|
|
673 return i + len; |
|
|
674 } |
|
|
675 } |
|
|
676 } |
|
|
677 } |
|
|
678 |
|
|
679 return s_len; |
|
|
680 } |
|
|
681 |
|
|
682 // Find the end of a tilde expansion in S, and return the index |
|
|
683 // of the character which ends the tilde definition. |
|
|
684 |
|
|
685 static size_t |
|
3504
|
686 tilde_find_suffix (const std::string& s) |
|
3040
|
687 { |
|
|
688 size_t s_len = s.length (); |
|
|
689 |
|
|
690 string_vector suffixes = file_ops::tilde_additional_suffixes; |
|
|
691 |
|
|
692 size_t i = 0; |
|
|
693 |
|
|
694 for ( ; i < s_len; i++) |
|
|
695 { |
|
6694
|
696 if (file_ops::is_dir_sep (s[i])) |
|
3040
|
697 break; |
|
|
698 |
|
|
699 if (! suffixes.empty ()) |
|
|
700 { |
|
|
701 for (int j = 0; j < suffixes.length (); j++) |
|
|
702 { |
|
|
703 size_t sfx_len = suffixes[j].length (); |
|
|
704 |
|
|
705 if (suffixes[j].compare (s.substr (i, sfx_len)) == 0) |
|
|
706 return i; |
|
|
707 } |
|
|
708 } |
|
|
709 } |
|
|
710 |
|
|
711 return i; |
|
|
712 } |
|
|
713 |
|
|
714 // Take FNAME and return the tilde prefix we want expanded. |
|
|
715 |
|
3504
|
716 static std::string |
|
|
717 isolate_tilde_prefix (const std::string& fname) |
|
3040
|
718 { |
|
|
719 size_t f_len = fname.length (); |
|
|
720 |
|
|
721 size_t len = 1; |
|
|
722 |
|
6694
|
723 while (len < f_len && ! file_ops::is_dir_sep (fname[len])) |
|
3040
|
724 len++; |
|
|
725 |
|
|
726 return fname.substr (1, len); |
|
|
727 } |
|
|
728 |
|
|
729 // Do the work of tilde expansion on FILENAME. FILENAME starts with a |
|
|
730 // tilde. |
|
|
731 |
|
3504
|
732 static std::string |
|
|
733 tilde_expand_word (const std::string& filename) |
|
3040
|
734 { |
|
|
735 size_t f_len = filename.length (); |
|
|
736 |
|
|
737 if (f_len == 0 || filename[0] != '~') |
|
|
738 return filename; |
|
|
739 |
|
|
740 // A leading `~/' or a bare `~' is *always* translated to the value |
|
|
741 // of $HOME or the home directory of the current user, regardless of |
|
|
742 // any preexpansion hook. |
|
|
743 |
|
6694
|
744 if (f_len == 1 || file_ops::is_dir_sep (filename[1])) |
|
3040
|
745 return octave_env::get_home_directory () + filename.substr (1); |
|
|
746 |
|
3504
|
747 std::string username = isolate_tilde_prefix (filename); |
|
3040
|
748 |
|
|
749 size_t user_len = username.length (); |
|
|
750 |
|
3504
|
751 std::string dirname; |
|
3040
|
752 |
|
|
753 if (file_ops::tilde_expansion_preexpansion_hook) |
|
|
754 { |
|
3504
|
755 std::string expansion |
|
3040
|
756 = file_ops::tilde_expansion_preexpansion_hook (username); |
|
|
757 |
|
|
758 if (! expansion.empty ()) |
|
3074
|
759 return expansion + filename.substr (user_len+1); |
|
3040
|
760 } |
|
|
761 |
|
|
762 // No preexpansion hook, or the preexpansion hook failed. Look in the |
|
|
763 // password database. |
|
|
764 |
|
|
765 octave_passwd pw = octave_passwd::getpwnam (username); |
|
|
766 |
|
|
767 if (! pw) |
|
|
768 { |
|
|
769 // If the calling program has a special syntax for expanding tildes, |
|
|
770 // and we couldn't find a standard expansion, then let them try. |
|
|
771 |
|
|
772 if (file_ops::tilde_expansion_failure_hook) |
|
|
773 { |
|
3504
|
774 std::string expansion |
|
3040
|
775 = file_ops::tilde_expansion_failure_hook (username); |
|
|
776 |
|
|
777 if (! expansion.empty ()) |
|
3074
|
778 dirname = expansion + filename.substr (user_len+1); |
|
3040
|
779 } |
|
|
780 |
|
|
781 // If we don't have a failure hook, or if the failure hook did not |
|
|
782 // expand the tilde, return a copy of what we were passed. |
|
|
783 |
|
|
784 if (dirname.length () == 0) |
|
|
785 dirname = filename; |
|
|
786 } |
|
|
787 else |
|
3074
|
788 dirname = pw.dir () + filename.substr (user_len+1); |
|
3040
|
789 |
|
|
790 return dirname; |
|
|
791 } |
|
|
792 |
|
|
793 // If NAME has a leading ~ or ~user, Unix-style, expand it to the |
|
|
794 // user's home directory. If no ~, or no <pwd.h>, just return NAME. |
|
|
795 |
|
3504
|
796 std::string |
|
|
797 file_ops::tilde_expand (const std::string& name) |
|
2926
|
798 { |
|
3504
|
799 std::string result; |
|
2926
|
800 |
|
3040
|
801 size_t name_len = name.length (); |
|
2926
|
802 |
|
3040
|
803 // Scan through S expanding tildes as we come to them. |
|
2926
|
804 |
|
3040
|
805 size_t pos = 0; |
|
2926
|
806 |
|
3040
|
807 while (1) |
|
|
808 { |
|
|
809 if (pos > name_len) |
|
|
810 break; |
|
2926
|
811 |
|
3040
|
812 size_t len; |
|
|
813 |
|
|
814 // Make START point to the tilde which starts the expansion. |
|
2926
|
815 |
|
3040
|
816 size_t start = tilde_find_prefix (name.substr (pos), len); |
|
|
817 |
|
|
818 result.append (name.substr (pos, start)); |
|
2926
|
819 |
|
3040
|
820 // Advance STRING to the starting tilde. |
|
|
821 |
|
|
822 pos += start; |
|
2926
|
823 |
|
3040
|
824 // Make FINI be the index of one after the last character of the |
|
|
825 // username. |
|
2926
|
826 |
|
3040
|
827 size_t fini = tilde_find_suffix (name.substr (pos)); |
|
2926
|
828 |
|
3040
|
829 // If both START and FINI are zero, we are all done. |
|
2926
|
830 |
|
3040
|
831 if (! (start || fini)) |
|
|
832 break; |
|
2926
|
833 |
|
3040
|
834 // Expand the entire tilde word, and copy it into RESULT. |
|
2947
|
835 |
|
3504
|
836 std::string tilde_word = name.substr (pos, fini); |
|
3040
|
837 |
|
|
838 pos += fini; |
|
2926
|
839 |
|
3504
|
840 std::string expansion = tilde_expand_word (tilde_word); |
|
3040
|
841 |
|
|
842 result.append (expansion); |
|
2926
|
843 } |
|
|
844 |
|
3040
|
845 return result; |
|
2926
|
846 } |
|
|
847 |
|
|
848 // A vector version of the above. |
|
|
849 |
|
|
850 string_vector |
|
|
851 file_ops::tilde_expand (const string_vector& names) |
|
|
852 { |
|
|
853 string_vector retval; |
|
|
854 |
|
|
855 int n = names.length (); |
|
|
856 |
|
|
857 retval.resize (n); |
|
|
858 |
|
|
859 for (int i = 0; i < n; i++) |
|
|
860 retval[i] = file_ops::tilde_expand (names[i]); |
|
|
861 |
|
|
862 return retval; |
|
|
863 } |
|
1802
|
864 |
|
1765
|
865 int |
|
2926
|
866 file_ops::umask (mode_t mode) |
|
1765
|
867 { |
|
|
868 #if defined (HAVE_UMASK) |
|
2926
|
869 return ::umask (mode); |
|
1765
|
870 #else |
|
|
871 return 0; |
|
|
872 #endif |
|
|
873 } |
|
|
874 |
|
1773
|
875 int |
|
3504
|
876 file_ops::unlink (const std::string& name) |
|
1773
|
877 { |
|
3504
|
878 std::string msg; |
|
2937
|
879 return unlink (name, msg); |
|
1773
|
880 } |
|
|
881 |
|
2668
|
882 int |
|
3504
|
883 file_ops::unlink (const std::string& name, std::string& msg) |
|
2668
|
884 { |
|
3504
|
885 msg = std::string (); |
|
2668
|
886 |
|
2937
|
887 int status = -1; |
|
|
888 |
|
|
889 #if defined (HAVE_UNLINK) |
|
|
890 status = ::unlink (name.c_str ()); |
|
2668
|
891 |
|
|
892 if (status < 0) |
|
3504
|
893 { |
|
|
894 using namespace std; |
|
|
895 msg = ::strerror (errno); |
|
|
896 } |
|
2937
|
897 #else |
|
|
898 msg = NOT_SUPPORTED ("unlink"); |
|
|
899 #endif |
|
2668
|
900 |
|
|
901 return status; |
|
|
902 } |
|
|
903 |
|
4097
|
904 bool |
|
|
905 file_ops::is_dir_sep (char c) |
|
|
906 { |
|
4101
|
907 return dir_sep_chars.find (c) != NPOS; |
|
4097
|
908 } |
|
|
909 |
|
1765
|
910 /* |
|
|
911 ;;; Local Variables: *** |
|
|
912 ;;; mode: C++ *** |
|
|
913 ;;; End: *** |
|
|
914 */ |
