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annotate deps/Platinum/ThirdParty/Neptune/Source/System/Posix/NptPosixFile.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Neptune - File :: Posix Implementation
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4 |
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5 | (c) 2001-2008 Gilles Boccon-Gibod
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6 | Author: Gilles Boccon-Gibod (bok@bok.net)
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7 |
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8 ****************************************************************/
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9
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10 /*----------------------------------------------------------------------
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11 | includes
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12 +---------------------------------------------------------------------*/
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13 #define _LARGEFILE_SOURCE
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14 #define _LARGEFILE_SOURCE64
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15 #define _FILE_OFFSET_BITS 64
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16
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17 #include <sys/stat.h>
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18
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19 #include <errno.h>
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20
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21 #if defined(_WIN32)
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22 #include <direct.h>
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23 #include <stdlib.h>
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24 #include <stdio.h>
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25 #else
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26 #include <unistd.h>
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27 #include <dirent.h>
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28 #endif
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29
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30 #include "NptLogging.h"
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31 #include "NptFile.h"
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32 #include "NptUtils.h"
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33
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34 /*----------------------------------------------------------------------
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35 | logging
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36 +---------------------------------------------------------------------*/
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37 //NPT_SET_LOCAL_LOGGER("neptune.posix.file")
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38
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39 /*----------------------------------------------------------------------
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40 | Win32 adaptation
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41 +---------------------------------------------------------------------*/
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42 #if defined(_WIN32) || defined(_XBOX)
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43 extern int NPT_stat_utf8(const char* path, NPT_stat_struct* info);
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44 extern char* NPT_getcwd_utf8(char* path, unsigned int path_size);
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45 #define getcwd NPT_getcwd_utf8
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46 #define S_ISDIR(_m) (((_m)&_S_IFMT) == _S_IFDIR)
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47 #define S_ISREG(_m) (((_m)&_S_IFMT) == _S_IFREG)
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48 #define S_IWUSR _S_IWRITE
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49 #endif
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50
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51 /*----------------------------------------------------------------------
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52 | MapErrno
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53 +---------------------------------------------------------------------*/
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54 static NPT_Result
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55 MapErrno(int err) {
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56 switch (err) {
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57 case EACCES: return NPT_ERROR_PERMISSION_DENIED;
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58 case EPERM: return NPT_ERROR_PERMISSION_DENIED;
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59 case ENOENT: return NPT_ERROR_NO_SUCH_FILE;
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60 case ENAMETOOLONG: return NPT_ERROR_INVALID_PARAMETERS;
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61 case EBUSY: return NPT_ERROR_FILE_BUSY;
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62 case EROFS: return NPT_ERROR_FILE_NOT_WRITABLE;
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63 case ENOTDIR: return NPT_ERROR_FILE_NOT_DIRECTORY;
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64 case EEXIST: return NPT_ERROR_FILE_ALREADY_EXISTS;
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65 case ENOSPC: return NPT_ERROR_FILE_NOT_ENOUGH_SPACE;
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66 case ENOTEMPTY: return NPT_ERROR_DIRECTORY_NOT_EMPTY;
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67 default: return NPT_ERROR_ERRNO(err);
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68 }
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69 }
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70
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71 #if !defined(_WIN32)
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72 /*----------------------------------------------------------------------
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73 | NPT_FilePath::Separator
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74 +---------------------------------------------------------------------*/
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75 const NPT_String NPT_FilePath::Separator("/");
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76
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77 /*----------------------------------------------------------------------
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78 | NPT_File::GetRoots
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79 +---------------------------------------------------------------------*/
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80 NPT_Result
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81 NPT_File::GetRoots(NPT_List<NPT_String>& roots)
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82 {
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83 roots.Clear();
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84 roots.Add("/");
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85 return NPT_SUCCESS;
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86 }
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87
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88 /*----------------------------------------------------------------------
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89 | NPT_File::CreateDirectory
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90 +---------------------------------------------------------------------*/
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91 NPT_Result
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92 NPT_File::CreateDirectory(const char* path)
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93 {
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94 int result;
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95
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96 result = mkdir(path, 0755);
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97 if (result != 0) {
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98 return MapErrno(errno);
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99 }
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100
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101 return NPT_SUCCESS;
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102 }
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103
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104 /*----------------------------------------------------------------------
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105 | NPT_File::DeleteFile
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106 +---------------------------------------------------------------------*/
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107 NPT_Result
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108 NPT_File::DeleteFile(const char* path)
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109 {
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110 int result = unlink(path);
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111 if (result != 0) return MapErrno(errno);
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112
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113 return NPT_SUCCESS;
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114 }
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115
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116 /*----------------------------------------------------------------------
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117 | NPT_File::DeleteDirectory
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118 +---------------------------------------------------------------------*/
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119 NPT_Result
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120 NPT_File::DeleteDirectory(const char* path)
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121 {
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122 int result = rmdir(path);
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123 if (result != 0) return MapErrno(errno);
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124
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125 return NPT_SUCCESS;
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126 }
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127
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128 /*----------------------------------------------------------------------
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129 | NPT_File::Rename
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130 +---------------------------------------------------------------------*/
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131 NPT_Result
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132 NPT_File::Rename(const char* from_path, const char* to_path)
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133 {
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134 int result = rename(from_path, to_path);
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135 if (result != 0) return MapErrno(errno);
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136
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137 return NPT_SUCCESS;
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138 }
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139
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140 /*----------------------------------------------------------------------
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141 | NPT_File::ListDirectory
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142 +---------------------------------------------------------------------*/
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143 NPT_Result
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144 NPT_File::ListDirectory(const char* path,
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145 NPT_List<NPT_String>& entries,
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146 NPT_Ordinal start /* = 0 */,
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147 NPT_Cardinal max /* = 0 */)
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148 {
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149 // default return value
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150 entries.Clear();
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151
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152 // check the arguments
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153 if (path == NULL) return NPT_ERROR_INVALID_PARAMETERS;
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154
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155 // list the entries
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156 DIR *directory = opendir(path);
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157 if (directory == NULL) return NPT_ERROR_OUT_OF_MEMORY;
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158
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159 NPT_Cardinal count = 0;
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160 for (;;) {
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161 struct dirent* entry_pointer = NULL;
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162 #if defined(NPT_CONFIG_HAVE_READDIR_R)
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163 struct dirent entry;
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164 int result = readdir_r(directory, &entry, &entry_pointer);
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165 if (result != 0 || entry_pointer == NULL) break;
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166 #else
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167 entry_pointer = readdir(directory);
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168 if (entry_pointer == NULL) break;
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169 #endif
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170 // ignore odd names
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171 if (entry_pointer->d_name[0] == '\0') continue;
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172
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173 // ignore . and ..
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174 if (entry_pointer->d_name[0] == '.' &&
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175 entry_pointer->d_name[1] == '\0') {
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176 continue;
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177 }
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178 if (entry_pointer->d_name[0] == '.' &&
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179 entry_pointer->d_name[1] == '.' &&
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180 entry_pointer->d_name[2] == '\0') {
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181 continue;
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182 }
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183
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184 // continue if not yet first item requested
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185 if (start > 0) {
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186 --start;
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187 continue;
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188 }
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189 entries.Add(NPT_String(entry_pointer->d_name));
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190
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191 // stop when reaching maximum requested
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192 if (max && ++count == max) break;
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193 }
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194
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195 closedir(directory);
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196
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197 return NPT_SUCCESS;
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198 }
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199 #endif
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200
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201 /*----------------------------------------------------------------------
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202 | NPT_File::GetWorkingDirectory
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203 +---------------------------------------------------------------------*/
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204 NPT_Result
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205 NPT_File::GetWorkingDirectory(NPT_String& path)
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206 {
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207 char buffer[1024+1];
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208 char* dir = getcwd(buffer, 1024+1);
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209 if (dir == NULL) return MapErrno(errno);
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210 path = dir;
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211
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212 return NPT_SUCCESS;
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213 }
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214
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215 /*----------------------------------------------------------------------
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216 | NPT_File::GetInfo
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217 +---------------------------------------------------------------------*/
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218 NPT_Result
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219 NPT_File::GetInfo(const char* path, NPT_FileInfo* info)
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220 {
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221 // default value
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222 if (info) NPT_SetMemory(info, 0, sizeof(*info));
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223
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224 // On Windows, stat will fail if a dir ends with a separator
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225 NPT_String _path = path;
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226 _path.TrimRight("\\/");
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227 if (NPT_StringLength(path) == 2 && path[1] == ':') {
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228 _path += NPT_FilePath::Separator;
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229 }
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230
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231 // get the file info
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232 NPT_stat_struct stat_buffer;
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233 int result = NPT_stat(_path, &stat_buffer);
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234 if (result != 0) return MapErrno(errno);
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235
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236 // setup the returned fields
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237 if (info) {
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238 info->m_Size = stat_buffer.st_size;
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239 if (S_ISREG(stat_buffer.st_mode)) {
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240 info->m_Type = NPT_FileInfo::FILE_TYPE_REGULAR;
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241 } else if (S_ISDIR(stat_buffer.st_mode)) {
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242 info->m_Type = NPT_FileInfo::FILE_TYPE_DIRECTORY;
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243 } else {
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244 info->m_Type = NPT_FileInfo::FILE_TYPE_OTHER;
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245 }
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246 info->m_AttributesMask &= NPT_FILE_ATTRIBUTE_READ_ONLY;
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247 if ((stat_buffer.st_mode & S_IWUSR) == 0) {
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248 info->m_Attributes &= NPT_FILE_ATTRIBUTE_READ_ONLY;
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249 }
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250 }
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251
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252 return NPT_SUCCESS;
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253 }