annotate liboctave/lo-sysdep.cc @ 10314:07ebe522dac2

untabify liboctave C++ sources
author John W. Eaton <jwe@octave.org>
date Thu, 11 Feb 2010 12:23:32 -0500
parents 65b41bc71f09
children 65d5776379c3
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1 /*
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2
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3 Copyright (C) 1996, 1997, 2000, 2001, 2005, 2006, 2007, 2008 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <iostream>
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28 #include <string>
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29 #include <vector>
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30
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31 #include <sys/types.h>
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32 #include <unistd.h>
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33
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34 #include <fcntl.h>
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35
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36 #if defined (__WIN32__) && ! defined (__CYGWIN__)
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37 #include <windows.h>
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38 #ifdef max
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39 # undef min
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40 # undef max
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41 #endif
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42 #endif
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43
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44 #include "file-ops.h"
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45 #include "lo-error.h"
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46 #include "pathlen.h"
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47 #include "lo-sysdep.h"
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48 #include "str-vec.h"
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49 #include "oct-locbuf.h"
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50
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51 std::string
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52 octave_getcwd (void)
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53 {
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54 std::string retval;
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55
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56 // Using the gnulib getcwd module ensures that we have a getcwd that
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57 // will allocate a buffer as large as necessary if buf and size are
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58 // both 0.
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59
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60 char *tmp = getcwd (0, 0);
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61
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62 if (tmp)
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63 {
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64 retval = tmp;
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65 free (tmp);
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66 }
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67 else
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68 (*current_liboctave_error_handler) ("unable to find current directory");
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69
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70 return retval;
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71 }
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72
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73 int
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74 octave_chdir (const std::string& path_arg)
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75 {
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76 std::string path = file_ops::tilde_expand (path_arg);
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77
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78 #if defined (__EMX__)
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79 int retval = -1;
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80
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81 char *tmp_path = strsave (path.c_str ());
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82
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83 if (path.length () == 2 && path[1] == ':')
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84 {
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85 char *upper_case_dir_name = strupr (tmp_path);
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86 _chdrive (upper_case_dir_name[0]);
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87 if (_getdrive () == upper_case_dir_name[0])
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88 retval = _chdir2 ("/");
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89 }
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90 else
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91 retval = _chdir2 (tmp_path);
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92
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93 delete [] tmp_path;
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94
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95 return retval;
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96 #else
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97
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98 #if defined (__WIN32__) && ! defined (__CYGWIN__)
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99 if (path.length() == 2 && path[1] == ':')
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100 path += "\\";
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101 #endif
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102
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103 return chdir (path.c_str ());
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104 #endif
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105 }
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106
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107 #if defined (__WIN32__) && ! defined (__CYGWIN__)
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108
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109 pid_t
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110 octave_popen2 (const std::string& cmd, const string_vector& args, bool sync_mode,
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111 int *fildes, std::string& msg)
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112 {
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113 pid_t pid;
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114 PROCESS_INFORMATION pi;
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115 STARTUPINFO si;
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116 std::string command = "\"" + cmd + "\"";
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117 HANDLE hProcess = GetCurrentProcess(), childRead, childWrite, parentRead, parentWrite;
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118 DWORD pipeMode;
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119
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120 ZeroMemory (&pi, sizeof (pi));
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121 ZeroMemory (&si, sizeof (si));
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122 si.cb = sizeof (si);
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123
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124 if (! CreatePipe (&childRead, &parentWrite, 0, 0) ||
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125 ! DuplicateHandle (hProcess, childRead, hProcess, &childRead, 0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE))
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126 {
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127 msg = "popen2: pipe creation failed";
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128 return -1;
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129 }
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130 if (! CreatePipe (&parentRead, &childWrite, 0, 0) ||
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131 ! DuplicateHandle (hProcess, childWrite, hProcess, &childWrite, 0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE))
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132 {
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133 msg = "popen2: pipe creation failed";
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134 return -1;
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135 }
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136 if (! sync_mode)
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137 {
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138 pipeMode = PIPE_NOWAIT;
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139 SetNamedPipeHandleState (parentRead, &pipeMode, 0, 0);
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140 }
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141 fildes[1] = _open_osfhandle (reinterpret_cast<long> (parentRead), _O_RDONLY | _O_BINARY);
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142 fildes[0] = _open_osfhandle (reinterpret_cast<long> (parentWrite), _O_WRONLY | _O_BINARY);
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143 si.dwFlags |= STARTF_USESTDHANDLES;
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144 si.hStdInput = childRead;
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145 si.hStdOutput = childWrite;
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146
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147 // Ignore first arg as it is the command
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148 for (int k=1; k<args.length(); k++)
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149 command += " \"" + args[k] + "\"";
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150 OCTAVE_LOCAL_BUFFER (char, c_command, command.length () + 1);
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151 strcpy (c_command, command.c_str ());
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152 if (! CreateProcess (0, c_command, 0, 0, TRUE, 0, 0, 0, &si, &pi))
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153 {
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154 msg = "popen2: process creation failed";
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155 return -1;
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156 }
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157 pid = pi.dwProcessId;
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158
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159 CloseHandle (childRead);
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160 CloseHandle (childWrite);
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161 CloseHandle (pi.hProcess);
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162 CloseHandle (pi.hThread);
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163
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164 return pid;
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165 }
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166
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167 #endif
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168
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169 #if defined (_MSC_VER) && ! defined (HAVE_DIRENT_H)
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170
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171 // FIXME -- it would probably be better to adapt the versions of
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172 // opendir, readdir, and closedir from Emacs as they appear to be more
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173 // complete implementations (do the functions below work for network
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174 // paths, for example)? We can probably get along without rewinddir.
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175
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176 struct __DIR
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177 {
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178 HANDLE hnd;
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179 WIN32_FIND_DATA fd;
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180 int dirty;
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181 struct direct d;
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182 const char *current;
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183 };
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184
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185 DIR *
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186 opendir (const char *name)
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187 {
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188 DIR *d = static_cast<DIR *> (malloc (sizeof (DIR)));
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189 static char buffer[MAX_PATH];
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190
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191 strncpy (buffer, name, MAX_PATH);
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192 if (buffer[strnlen(buffer, MAX_PATH)-1] != '\\')
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193 strncat (buffer, "\\*", MAX_PATH);
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194 else
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195 strncat (buffer, "*", MAX_PATH);
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196 d->current = buffer;
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197 d->hnd = FindFirstFile (buffer, &(d->fd));
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198 if (d->hnd == INVALID_HANDLE_VALUE)
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199 return 0;
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200 d->dirty = 1;
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201 return d;
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202 }
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203
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204 void
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205 rewinddir (DIR *d)
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206 {
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207 if (d->hnd != INVALID_HANDLE_VALUE)
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208 FindClose (d->hnd);
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209 d->hnd = FindFirstFile (d->current, &(d->fd));
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210 d->dirty = 1;
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211 }
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212
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213 void
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214 closedir (DIR *d)
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215 {
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216 if (d->hnd != INVALID_HANDLE_VALUE)
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217 FindClose (d->hnd);
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218 free (d);
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219 }
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220
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221 struct direct *
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222 readdir (DIR *d)
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223 {
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224 if (! d->dirty)
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225 {
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226 if (! FindNextFile(d->hnd, &(d->fd)))
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227 return 0;
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228 }
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229 d->d.d_name = d->fd.cFileName;
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230 d->dirty = 0;
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231 return &(d->d);
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232 }
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233
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234 #endif