annotate liboctave/system/lo-sysdep.cc @ 28534:548598760b66

get_ASCII_filename: On Windows, optionally try to convert to the locale charset. * lo-sysdep.h, lo-sysdep.cc (get_ASCII_filename): Optionally, try to convert the file path to the locale charset. * uniconv-wrappers.h, uniconv-wrappers.cc (octave_u8_conv_to_encoding_strict): Add new function.
author Markus Mützel <markus.muetzel@gmx.de>
date Sat, 04 Jul 2020 12:14:21 +0200
parents a40e3c3e17fa
children a98fd0657e35
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2020 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include "dir-ops.h"
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31 #include "file-ops.h"
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32 #include "lo-error.h"
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33 #include "lo-sysdep.h"
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34 #include "localcharset-wrapper.h"
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35 #include "putenv-wrapper.h"
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36 #include "uniconv-wrappers.h"
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37 #include "unistd-wrappers.h"
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38 #include "unsetenv-wrapper.h"
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39
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40 #if defined (OCTAVE_USE_WINDOWS_API)
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41 # include <windows.h>
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42 # include <wchar.h>
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43
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44 # include "filepos-wrappers.h"
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45 # include "lo-hash.h"
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46 # include "oct-locbuf.h"
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47 # include "unwind-prot.h"
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48 #endif
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49
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50 namespace octave
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51 {
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52 namespace sys
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53 {
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54 std::string
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55 getcwd (void)
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56 {
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57 std::string retval;
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58
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59 #if defined (OCTAVE_USE_WINDOWS_API)
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60 wchar_t *tmp = _wgetcwd (nullptr, 0);
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61
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62 if (! tmp)
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63 (*current_liboctave_error_handler) ("unable to find current directory");
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64
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65 std::wstring tmp_wstr (tmp);
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66 free (tmp);
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67
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68 std::string tmp_str = u8_from_wstring (tmp_wstr);
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69
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70 retval = tmp_str;
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71
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72 #else
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73 // Using octave_getcwd_wrapper ensures that we have a getcwd that
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74 // will allocate a buffer as large as necessary if buf and size are
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75 // both 0.
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76
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77 char *tmp = octave_getcwd_wrapper (nullptr, 0);
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78
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79 if (! tmp)
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80 (*current_liboctave_error_handler) ("unable to find current directory");
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81
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82 retval = tmp;
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83 free (tmp);
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84 #endif
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85
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86 return retval;
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87 }
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88
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89 int
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90 chdir (const std::string& path_arg)
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91 {
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92 std::string path = sys::file_ops::tilde_expand (path_arg);
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93
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94 #if defined (OCTAVE_USE_WINDOWS_API)
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95 if (path.length () == 2 && path[1] == ':')
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96 path += '\\';
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97 #endif
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98
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99 return octave_chdir_wrapper (path.c_str ());
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100 }
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101
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102 bool
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103 get_dirlist (const std::string& dirname, string_vector& dirlist,
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104 std::string& msg)
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105 {
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106 dirlist = "";
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107 msg = "";
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108 #if defined (OCTAVE_USE_WINDOWS_API)
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109 _WIN32_FIND_DATAW ffd;
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110
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111 std::string path_name (dirname);
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112 if (path_name.empty ())
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113 return true;
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114
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115 if (path_name.back () == '\\' || path_name.back () == '/')
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116 path_name.push_back ('*');
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117 else
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118 path_name.append (R"(\*)");
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119
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120 // Find first file in directory.
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121 std::wstring wpath_name = u8_to_wstring (path_name);
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122 HANDLE hFind = FindFirstFileW (wpath_name.c_str (), &ffd);
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123 if (INVALID_HANDLE_VALUE == hFind)
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124 {
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125 DWORD errCode = GetLastError ();
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126 char *errorText = nullptr;
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127 FormatMessageA (FORMAT_MESSAGE_FROM_SYSTEM |
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128 FORMAT_MESSAGE_ALLOCATE_BUFFER |
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129 FORMAT_MESSAGE_IGNORE_INSERTS,
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130 nullptr, errCode,
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131 MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
863ae57eee69 maint: Use Octave coding conventions in liboctave/
Rik <rik@octave.org>
parents: 27923
diff changeset
132 reinterpret_cast <char *> (&errorText), 0, nullptr);
26163
d478d5d1c8e9 Fix potential segfault on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25916
diff changeset
133 if (errorText != nullptr)
25516
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
134 {
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
135 msg = std::string (errorText);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
136 LocalFree (errorText);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
137 }
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
138 return false;
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
139 }
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
140
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
141 std::list<std::string> dirlist_str;
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
142 do
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
143 dirlist_str.push_back (u8_from_wstring (ffd.cFileName));
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
144 while (FindNextFileW (hFind, &ffd) != 0);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
145
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
146 FindClose(hFind);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
147
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
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parents: 25514
diff changeset
148 dirlist = string_vector (dirlist_str);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
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parents: 25514
diff changeset
149
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
150 #else
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
151
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
152 dir_entry dir (dirname);
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
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parents: 25514
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153
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
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parents: 25514
diff changeset
154 if (! dir)
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
155 {
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
156 msg = dir.error ();
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
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diff changeset
157 return false;
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
158 }
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
159
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
160 dirlist = dir.read ();
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
161
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
162 dir.close ();
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
163 #endif
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
164
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
165 return true;
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
166 }
8945a6a6c0eb Add Unicode support for getting directory listing in Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25514
diff changeset
167
28220
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
168 #if defined (OCTAVE_USE_WINDOWS_API)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
169
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
170 static bool check_fseek_ftell_workaround_needed (bool set_nonbuffered_mode)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
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171 {
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
172 // To check whether the workaround is needed:
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John W. Eaton <jwe@octave.org>
parents: 28175
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173 //
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John W. Eaton <jwe@octave.org>
parents: 28175
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174 // * Create a tmp file with LF line endings only.
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
175 //
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
176 // * Open that file for reading in text mode.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
177 //
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John W. Eaton <jwe@octave.org>
parents: 28175
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178 // * Read a line.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
179 //
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parents: 28175
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180 // * Use ftello to record the position of the beginning of the
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
181 // second line.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
182 //
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
183 // * Read and save the contents of the second line.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
184 //
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
185 // * Use fseeko to return to the saved position.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
186 //
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
187 // * Read the second line again and compare to the previously
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
188 // saved text.
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
189 //
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John W. Eaton <jwe@octave.org>
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diff changeset
190 // * If the lines are different, we need to set non-buffered
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
191 // input mode for files opened in text mode.
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
192
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John W. Eaton <jwe@octave.org>
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diff changeset
193 std::string tmpname = sys::tempnam ("", "oct-");
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
194
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
195 if (tmpname.empty ())
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
196 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
197 (*current_liboctave_warning_handler)
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John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
198 ("fseek/ftell bug check failed (tmp name creation)!");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
199 return false;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
200 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
201
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
202 std::FILE *fptr = std::fopen (tmpname.c_str (), "wb");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
203
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
204 if (! fptr)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
205 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
206 (*current_liboctave_warning_handler)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
207 ("fseek/ftell bug check failed (opening tmp file for writing)!");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
208 return false;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
209 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
210
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
211 fprintf (fptr, "%s", "foo\nbar\nbaz\n");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
212
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
213 std::fclose (fptr);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
214
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
215 fptr = std::fopen (tmpname.c_str (), "rt");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
216
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
217 if (! fptr)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
218 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
219 (*current_liboctave_warning_handler)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
220 ("fseek/ftell bug check failed (opening tmp file for reading)!");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
221 return false;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
222 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
223
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
224 unwind_action act ([fptr, tmpname] () {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
225 std::fclose (fptr);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
226 sys::unlink (tmpname);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
227 });
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
228
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
229 if (set_nonbuffered_mode)
28223
45763d59cb4f use nullptr instead of NULL or 0 in a few more places
John W. Eaton <jwe@octave.org>
parents: 28220
diff changeset
230 ::setvbuf (fptr, nullptr, _IONBF, 0);
28220
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
231
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
232 while (true)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
233 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
234 int c = fgetc (fptr);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
235
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
236 if (c == EOF)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
237 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
238 (*current_liboctave_warning_handler)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
239 ("fseek/ftell bug check failed (skipping first line)!");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
240 return false;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
241 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
242
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
243 if (c == '\n')
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
244 break;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
245 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
246
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
247 off_t pos = octave_ftello_wrapper (fptr);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
248
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
249 char buf1[8];
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
250 int i = 0;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
251 while (true)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
252 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
253 int c = fgetc (fptr);
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
254
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
255 if (c == EOF)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
256 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
257 (*current_liboctave_warning_handler)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
258 ("fseek/ftell bug check failed (reading second line)!");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
259 return false;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
260 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
261
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diff changeset
262 if (c == '\n')
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263 break;
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diff changeset
264
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diff changeset
265 buf1[i++] = static_cast<char> (c);
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266 }
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diff changeset
267 buf1[i] = '\0';
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268
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diff changeset
269 octave_fseeko_wrapper (fptr, pos, SEEK_SET);
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diff changeset
270
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diff changeset
271 char buf2[8];
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272 i = 0;
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diff changeset
273 while (true)
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274 {
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275 int c = fgetc (fptr);
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276
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277 if (c == EOF)
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278 {
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279 (*current_liboctave_warning_handler)
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280 ("fseek/ftell bug check failed (reading after repositioning)!");
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281 return false;
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282 }
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283
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284 if (c == '\n')
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285 break;
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diff changeset
286
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287 buf2[i++] = static_cast<char> (c);
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diff changeset
288 }
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289 buf2[i] = '\0';
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290
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291 return strcmp (buf1, buf2);
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diff changeset
292 }
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293
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294 #endif
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295
25517
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296 std::FILE *
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297 fopen (const std::string& filename, const std::string& mode)
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298 {
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diff changeset
299 #if defined (OCTAVE_USE_WINDOWS_API)
28220
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diff changeset
300
28175
b895daca20e2 Avoid potential lifetime issues with temporary std::wstring objects.
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diff changeset
301 std::wstring wfilename = u8_to_wstring (filename);
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302 std::wstring wmode = u8_to_wstring (mode);
28220
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diff changeset
303
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diff changeset
304 std::FILE *fptr = _wfopen (wfilename.c_str (), wmode.c_str ());
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
305
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diff changeset
306 static bool fseek_ftell_bug_workaround_needed = false;
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diff changeset
307 static bool fseek_ftell_bug_checked = false;
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diff changeset
308
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diff changeset
309 if (! fseek_ftell_bug_checked && mode.find ('t') != std::string::npos)
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diff changeset
310 {
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311 // FIXME: Is the following workaround needed for all files
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diff changeset
312 // opened in text mode, or only for files opened for reading?
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diff changeset
313
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diff changeset
314 // Try to avoid fseek/ftell bug on Windows systems by setting
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diff changeset
315 // non-buffered input mode for files opened in text mode, but
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diff changeset
316 // only if it appears that the workaround is needed. See
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317 // Octave bug #58055.
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diff changeset
318
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diff changeset
319 // To check whether the workaround is needed:
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diff changeset
320 //
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diff changeset
321 // * Create a tmp file with LF line endings only.
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diff changeset
322 //
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diff changeset
323 // * Open that file for reading in text mode.
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diff changeset
324 //
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diff changeset
325 // * Read a line.
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diff changeset
326 //
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diff changeset
327 // * Use ftello to record the position of the beginning of
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
328 // the second line.
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parents: 28175
diff changeset
329 //
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diff changeset
330 // * Read and save the contents of the second line.
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diff changeset
331 //
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diff changeset
332 // * Use fseeko to return to the saved position.
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
333 //
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diff changeset
334 // * Read the second line again and compare to the
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
335 // previously saved text.
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
336 //
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
337 // * If the lines are different, we need to set non-buffered
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
338 // input mode for files opened in text mode.
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John W. Eaton <jwe@octave.org>
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diff changeset
339 //
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
340 // * To verify that the workaround solves the problem,
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
341 // repeat the above test with non-buffered input mode. If
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parents: 28175
diff changeset
342 // that fails, warn that there may be trouble with
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
343 // ftell/fseek when reading files opened in text mode.
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
344
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
345 if (check_fseek_ftell_workaround_needed (false))
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
346 {
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
347 if (check_fseek_ftell_workaround_needed (true))
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
348 (*current_liboctave_warning_handler)
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
349 ("fseek/ftell may fail for files opened in text mode");
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
350 else
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
351 fseek_ftell_bug_workaround_needed = true;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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diff changeset
352 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
353
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
354 fseek_ftell_bug_checked = true;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
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parents: 28175
diff changeset
355 }
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
356
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
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diff changeset
357 if (fseek_ftell_bug_workaround_needed
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
358 && mode.find ('t') != std::string::npos)
28223
45763d59cb4f use nullptr instead of NULL or 0 in a few more places
John W. Eaton <jwe@octave.org>
parents: 28220
diff changeset
359 ::setvbuf (fptr, nullptr, _IONBF, 0);
28220
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
360
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
361 return fptr;
6cccc3c82175 attempt to work around Windows ftello/fseeko bug (bug #58055)
John W. Eaton <jwe@octave.org>
parents: 28175
diff changeset
362
25517
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
363 #else
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
364 return std::fopen (filename.c_str (), mode.c_str ());
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
365 #endif
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
366 }
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
367
28467
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
368 std::fstream
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
369 fstream (const std::string& filename, const std::ios::openmode mode)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
370 {
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
371 #if defined (OCTAVE_USE_WINDOWS_API)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
372
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
373 std::wstring wfilename = u8_to_wstring (filename);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
374
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
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diff changeset
375 return std::fstream (wfilename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
376
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
377 #else
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
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diff changeset
378 return std::fstream (filename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
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diff changeset
379 #endif
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
380 }
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
381
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
382 std::ifstream
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
383 ifstream (const std::string& filename, const std::ios::openmode mode)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
384 {
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
385 #if defined (OCTAVE_USE_WINDOWS_API)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
386
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
387 std::wstring wfilename = u8_to_wstring (filename);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
388
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
389 return std::ifstream (wfilename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
390
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
391 #else
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
392 return std::ifstream (filename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
393 #endif
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
394 }
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
395
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
396 std::ofstream
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
397 ofstream (const std::string& filename, const std::ios::openmode mode)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
398 {
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
399 #if defined (OCTAVE_USE_WINDOWS_API)
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
400
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
401 std::wstring wfilename = u8_to_wstring (filename);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
402
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
403 return std::ofstream (wfilename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
404
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
405 #else
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
406 return std::ofstream (filename.c_str (), mode);
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
407 #endif
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
408 }
159b6a1eb408 Use wide character overload to open file streams on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28223
diff changeset
409
25916
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
410 void
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
411 putenv_wrapper (const std::string& name, const std::string& value)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
412 {
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
413 // This function was adapted from xputenv from Karl Berry's kpathsearch
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
414 // library.
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
415 // FIXME: make this do the right thing if we don't have a SMART_PUTENV.
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
416
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
417 int new_len = name.length () + value.length () + 2;
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
418
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
419 // FIXME: This leaks memory, but so would a call to setenv.
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
420 // Short of extreme measures to track memory, altering the environment
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
421 // always leaks memory, but the saving grace is that the leaks are small.
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
422
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
423 char *new_item = static_cast<char *> (std::malloc (new_len));
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
424
26506
9cf999911dfe lo-sysdep.cc: Fix static analyzer detected issues (bug #55347).
Rik <rik@octave.org>
parents: 26376
diff changeset
425 if (new_item)
9cf999911dfe lo-sysdep.cc: Fix static analyzer detected issues (bug #55347).
Rik <rik@octave.org>
parents: 26376
diff changeset
426 sprintf (new_item, "%s=%s", name.c_str (), value.c_str ());
25916
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
427
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
428 // As far as I can see there's no way to distinguish between the
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
429 // various errors; putenv doesn't have errno values.
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
430
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
431 #if defined (OCTAVE_USE_WINDOWS_API)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
432 wchar_t *wnew_item = u8_to_wchar (new_item);
27102
84ff9953faa1 where possible, eliminate octave:: namespace qualifier inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26531
diff changeset
433 unwind_protect frame;
26531
481ac37b0e0e lo-sysdep.cc: Fix static analyzer detected issue (bug #55464).
Markus Mützel <markus.muetzel@gmx.de>
parents: 26506
diff changeset
434 frame.add_fcn (std::free, static_cast<void *> (new_item));
25916
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
435 if (_wputenv (wnew_item) < 0)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
436 (*current_liboctave_error_handler) ("putenv (%s) failed", new_item);
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
437 #else
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
438 if (octave_putenv_wrapper (new_item) < 0)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
439 (*current_liboctave_error_handler) ("putenv (%s) failed", new_item);
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
440 #endif
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
441 }
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
442
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
443 std::string
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
444 getenv_wrapper (const std::string& name)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
445 {
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
446 #if defined (OCTAVE_USE_WINDOWS_API)
28175
b895daca20e2 Avoid potential lifetime issues with temporary std::wstring objects.
Markus Mützel <markus.muetzel@gmx.de>
parents: 27933
diff changeset
447 std::wstring wname = u8_to_wstring (name);
b895daca20e2 Avoid potential lifetime issues with temporary std::wstring objects.
Markus Mützel <markus.muetzel@gmx.de>
parents: 27933
diff changeset
448 wchar_t *env = _wgetenv (wname.c_str ());
25916
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
449 return env ? u8_from_wstring (env) : "";
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
450 #else
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
451 char *env = ::getenv (name.c_str ());
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
452 return env ? env : "";
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
453 #endif
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
454 }
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
455
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
456 int
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
457 unsetenv_wrapper (const std::string& name)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
458 {
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
459 #if defined (OCTAVE_USE_WINDOWS_API)
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
460 putenv_wrapper (name, "");
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
461
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
462 std::wstring wname = u8_to_wstring (name);
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
463 return (SetEnvironmentVariableW (wname.c_str (), nullptr) ? 0 : -1);
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
464 #else
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
465 return octave_unsetenv_wrapper (name.c_str ());
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
466 #endif
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
467 }
3f2282954600 Support non-ASCII characters in environment variables on Windows (bug #53922).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25660
diff changeset
468
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
469 std::wstring
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
470 u8_to_wstring (const std::string& utf8_string)
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
471 {
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
472 size_t srclen = utf8_string.length ();
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
473 const uint8_t *src = reinterpret_cast<const uint8_t *>
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
474 (utf8_string.c_str ());
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
475
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
476 size_t length = 0;
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
477 wchar_t *wchar = reinterpret_cast<wchar_t *>
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
478 (octave_u8_conv_to_encoding ("wchar_t", src, srclen,
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
479 &length));
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
480
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
481 std::wstring retval = L"";
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
482 if (wchar != nullptr)
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
483 {
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
484 retval = std::wstring (wchar, length / sizeof (wchar_t));
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
485 free (static_cast<void *> (wchar));
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
486 }
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
487
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
488 return retval;
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
489 }
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
490
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
491 std::string
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
492 u8_from_wstring (const std::wstring& wchar_string)
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
493 {
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
494 size_t srclen = wchar_string.length () * sizeof (wchar_t);
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
495 const char *src = reinterpret_cast<const char *> (wchar_string.c_str ());
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
496
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
497 size_t length = 0;
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
498 char *mbchar = reinterpret_cast<char *>
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
499 (octave_u8_conv_from_encoding ("wchar_t", src, srclen,
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
500 &length));
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
501
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
502 std::string retval = "";
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
503 if (mbchar != nullptr)
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
504 {
25531
c2dc2fb6359b Fix C++ conversion functions between UTF-8 and wchar_t.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25517
diff changeset
505 retval = std::string (mbchar, length);
25514
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
506 free (static_cast<void *> (mbchar));
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
507 }
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
508
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
509 return retval;
c63f67d87b4a Add C++ functions to convert between UTF-8 string and wstring (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25054
diff changeset
510 }
25517
7fbc39a46be8 Add wrapper to fopen for files with non-ASCII chars in path on Windows (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25516
diff changeset
511
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
512 // At quite a few places in the code we are passing file names as
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
513 // char arrays to external library functions.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
514
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
515 // When these functions try to locate the corresponding file on the
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
516 // disc, they need to use the wide character API on Windows to
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
517 // correctly open files with non-ASCII characters.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
518
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
519 // But they have no way of knowing which encoding we are using for
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
520 // the passed string. So they have no way of reliably converting to
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
521 // a wchar_t array. (I.e. there is no possible fix for these
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
522 // functions with current C or C++.)
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
523
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
524 // To solve the dilemma, the function "get_ASCII_filename" first
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
525 // checks whether there are any non-ASCII characters in the passed
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
526 // file name. If there are not, it returns the original name.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
527
28534
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
528 // Otherwise, it optionally tries to convert the file name to the locale
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
529 // charset.
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
530
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
531 // If the file name contains characters that cannot be converted to the
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
532 // locale charset (or that step is skipped), it tries to obtain the short
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
533 // file name (8.3 naming scheme) which only consists of ASCII characters
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
534 // and are safe to pass. However, short file names can be disabled for
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
535 // performance reasons on the file system level with NTFS and they are not
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
536 // stored on other file systems (e.g. ExFAT). So there is no guarantee
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
537 // that these exist.
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
538
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
539 // If short file names are not stored, a hard link to the file is
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
540 // created. For this the path to the file is split at the deepest
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
541 // possible level that doesn't contain non-ASCII characters. At
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
542 // that level a hidden folder is created that holds the hard links.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
543 // That means we need to have write access on that location. A path
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
544 // to that hard link is returned.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
545
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
546 // If the file system is FAT32, there are no hard links. But FAT32
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
547 // always stores short file names. So we are safe.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
548
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
549 // ExFAT that is occasionally used on USB sticks and SD cards stores
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
550 // neither short file names nor does it support hard links. So for
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
551 // exFAT with this function, there is (currently) no way to generate
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
552 // a file name that is stripped from non-ASCII characters but still
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
553 // is valid.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
554
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
555 // For Unixy systems, this function does nothing.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
556
25532
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
557 std::string
28534
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
558 get_ASCII_filename (const std::string& orig_file_name,
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
559 const bool allow_locale)
25532
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
560 {
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
561 #if defined (OCTAVE_USE_WINDOWS_API)
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
562
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
563 // Return file name that only contains ASCII characters that can
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
564 // be used to access the file orig_file_name. The original file
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
565 // must exist in the file system before calling this function.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
566 // This is useful for passing file names to functions that are not
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
567 // aware of the character encoding we are using.
25532
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
568
28534
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
569 // 0. Check whether filename contains non-ASCII (UTF-8) characters.
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
570
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
571 std::string::const_iterator first_non_ASCII
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
572 = std::find_if (orig_file_name.begin (), orig_file_name.end (),
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
573 [](char c) { return (c < 0 || c >= 128); });
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
574
25532
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
575 if (first_non_ASCII == orig_file_name.end ())
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
576 return orig_file_name;
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
577
28534
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
578 // 1. Optionally, check if all characters in the path can be successfully
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
579 // converted to the locale charset
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
580 if (allow_locale)
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
581 {
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
582 const char *locale = octave_locale_charset_wrapper ();
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
583 if (locale)
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
584 {
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
585 const uint8_t *name_u8 = reinterpret_cast<const uint8_t *>
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
586 (orig_file_name.c_str ());
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
587 size_t length = 0;
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
588 char *name_locale = octave_u8_conv_to_encoding_strict
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
589 (locale, name_u8,
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
590 orig_file_name.length () + 1, &length);
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
591 if (name_locale)
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
592 {
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
593 std::string file_name_locale (name_locale, length);
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
594 free (name_locale);
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
595 return file_name_locale;
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
596 }
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
597 }
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
598 }
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
599
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
600 // 2. Check if file system stores short filenames (always
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
601 // ASCII-only).
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
602
25660
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
603 std::wstring w_orig_file_name_str = u8_to_wstring (orig_file_name);
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
604 const wchar_t *w_orig_file_name = w_orig_file_name_str.c_str ();
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
605
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
606 // Get full path to file
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
607 wchar_t w_full_file_name[_MAX_PATH];
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
608 if (_wfullpath (w_full_file_name, w_orig_file_name, _MAX_PATH) == nullptr)
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
609 return orig_file_name;
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
610
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
611 std::wstring w_full_file_name_str = w_full_file_name;
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
612
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
613 // Get short filename (8.3) from UTF-16 filename.
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
614
25660
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
615 long length = GetShortPathNameW (w_full_file_name, nullptr, 0);
25532
7dad5fa7e88e Add function for ASCII only file names (bug #49118).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25531
diff changeset
616
25660
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
617 if (length > 0)
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
618 {
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
619 // Dynamically allocate the correct size (terminating null char
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
620 // was included in length).
25615
ffc858064239 style fixes and commentary for get_ASCII_filename function (bug #54299)
John W. Eaton <jwe@octave.org>
parents: 25609
diff changeset
621
28534
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
Markus Mützel <markus.muetzel@gmx.de>
parents: 28472
diff changeset
622 OCTAVE_LOCAL_BUFFER (wchar_t, w_short_file_name, length);
25660
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
623 GetShortPathNameW (w_full_file_name, w_short_file_name, length);
25609
506419b5f817 maint: Strip trailing whitespace from source files.
John W. Eaton <jwe@octave.org>
parents: 25532
diff changeset
624
25660
4de7535ece11 Relative path specifications for non-ASCII files on Windows.
Markus Mützel <markus.muetzel@gmx.de>
parents: 25615
diff changeset
625 std::wstring w_short_file_name_str
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626 = std::wstring (w_short_file_name, length);
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627 std::string short_file_name = u8_from_wstring (w_short_file_name_str);
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628
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629 if (w_short_file_name_str.compare (0, length-1, w_full_file_name_str) != 0)
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630 return short_file_name;
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631 }
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632
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633 // 3. Create hard link with only-ASCII characters.
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634 // Get longest possible part of path that only contains ASCII chars.
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635
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636 std::wstring::iterator w_first_non_ASCII
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637 = std::find_if (w_full_file_name_str.begin (), w_full_file_name_str.end (),
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638 [](wchar_t c) { return (c < 0 || c >= 128); });
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639 std::wstring tmp_substr
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640 = std::wstring (w_full_file_name_str.begin (), w_first_non_ASCII);
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641
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642 size_t pos
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643 = tmp_substr.find_last_of (u8_to_wstring (file_ops::dir_sep_chars ()));
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diff changeset
644
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645 std::string par_dir
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646 = u8_from_wstring (w_full_file_name_str.substr (0, pos+1));
25609
506419b5f817 maint: Strip trailing whitespace from source files.
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647
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648 // Create .oct_ascii directory.
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649 // FIXME: We need to have write permission in this location.
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diff changeset
650
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651 std::string oct_ascii_dir = par_dir + ".oct_ascii";
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652 std::string test_dir = canonicalize_file_name (oct_ascii_dir);
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diff changeset
653
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654 if (test_dir.empty ())
27933
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655 {
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656 std::string msg;
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657 int status = sys::mkdir (oct_ascii_dir, 0777, msg);
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diff changeset
658
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659 if (status < 0)
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660 return orig_file_name;
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diff changeset
661
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662 // Set hidden property.
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663 SetFileAttributesA (oct_ascii_dir.c_str (), FILE_ATTRIBUTE_HIDDEN);
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diff changeset
664 }
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665
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666 // Create file from hash of full filename.
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667 std::string filename_hash
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diff changeset
668 = (oct_ascii_dir + file_ops::dir_sep_str ()
27102
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diff changeset
669 + crypto::hash ("SHA1", orig_file_name));
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diff changeset
670
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diff changeset
671 std::string abs_filename_hash = canonicalize_file_name (filename_hash);
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diff changeset
672
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diff changeset
673 if (! abs_filename_hash.empty ())
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diff changeset
674 sys::unlink (filename_hash);
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diff changeset
675
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diff changeset
676 wchar_t w_filename_hash[filename_hash.length ()+1] = {0};
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diff changeset
677
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diff changeset
678 for (size_t i=0; i < filename_hash.length (); i++)
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diff changeset
679 w_filename_hash[i] = filename_hash.at (i);
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diff changeset
680
25660
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diff changeset
681 if (CreateHardLinkW (w_filename_hash, w_orig_file_name, nullptr))
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682 return filename_hash;
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diff changeset
683
28534
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diff changeset
684 #else
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parents: 28472
diff changeset
685
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
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diff changeset
686 octave_unused_parameter (allow_locale);
548598760b66 get_ASCII_filename: On Windows, optionally try to convert to the locale charset.
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diff changeset
687
25615
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diff changeset
688 #endif
25532
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diff changeset
689
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parents: 25531
diff changeset
690 return orig_file_name;
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diff changeset
691 }
21738
a99c2407f930 use namespace for lo-sysdep.h functions
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parents: 21733
diff changeset
692 }
a99c2407f930 use namespace for lo-sysdep.h functions
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diff changeset
693 }