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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2018 Olaf Wintermann. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include <stdio.h> |
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30 | #include <stdlib.h> |
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31 | #include <string.h> |
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32 | #include <dirent.h> |
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33 | |
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34 | #include "system.h" |
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35 | |
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36 | void sys_freedirent(SysDirEnt *ent) { |
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37 | free(ent->name); |
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38 | free(ent); |
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39 | } |
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40 | |
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41 | #ifndef _WIN32 |
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42 | /* ---------- POSIX implementation ---------- */ |
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43 | |
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44 | SYS_DIR sys_opendir(const char *path) { |
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45 | DIR *dir = opendir(path); |
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46 | if(!dir) { |
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47 | return NULL; |
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48 | } |
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49 | SysDir *d = malloc(sizeof(SysDir)); |
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50 | d->dir = dir; |
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51 | d->ent = NULL; |
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52 | return d; |
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53 | } |
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54 | |
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55 | SysDirEnt* sys_readdir(SYS_DIR dir) { |
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56 | if(dir->ent) { |
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57 | free(dir->ent->name); |
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58 | free(dir->ent); |
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59 | dir->ent = NULL; |
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60 | } |
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61 | struct dirent *ent = readdir(dir->dir); |
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62 | if(ent) { |
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63 | SysDirEnt *e = malloc(sizeof(SysDirEnt)); |
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64 | e->name = strdup(ent->d_name); |
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65 | dir->ent = e; |
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66 | return e; |
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67 | } |
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68 | return NULL; |
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69 | } |
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70 | |
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71 | void sys_closedir(SYS_DIR dir) { |
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72 | closedir(dir->dir); |
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73 | if(dir->ent) { |
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74 | free(dir->ent->name); |
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75 | free(dir->ent); |
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76 | } |
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77 | free(dir); |
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78 | } |
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79 | |
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80 | FILE* sys_fopen(const char *path, const char *mode) { |
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81 | return fopen(path, mode); |
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82 | } |
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83 | |
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84 | int sys_stat(const char *path, SYS_STAT *s) { |
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85 | return stat(path, s); |
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86 | } |
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87 | |
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88 | int sys_rename(const char *oldpath, const char *newpath) { |
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89 | return rename(oldpath, newpath); |
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90 | } |
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91 | |
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92 | |
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93 | #else |
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94 | /* ---------- Windows implementation ---------- */ |
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95 | |
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96 | static wchar_t* path2winpath(const char *path, int dir, int *newlen) { |
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97 | size_t len = strlen(path); |
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98 | size_t lenadd = dir ? 2 : 0; |
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99 | |
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100 | |
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101 | wchar_t *wpath = calloc(len+lenadd, sizeof(wchar_t)); |
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102 | int wlen = MultiByteToWideChar( |
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103 | CP_UTF8, |
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104 | 0, |
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105 | path, |
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106 | len, |
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107 | wpath, |
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108 | len+1 |
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109 | ); |
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110 | if(newlen) { |
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111 | *newlen = wlen; |
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112 | } |
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113 | for(int i=0;i<wlen;i++) { |
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114 | if(wpath[i] == L'/') { |
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115 | wpath[i] = L'\\'; |
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116 | } |
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117 | } |
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118 | |
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119 | if(dir) { |
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120 | if(wpath[wlen-1] != L'\\') { |
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121 | wpath[wlen++] = L'\\'; |
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122 | } |
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123 | wpath[wlen++] = L'*'; |
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124 | } |
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125 | wpath[wlen] = 0; |
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126 | |
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127 | return wpath; |
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128 | } |
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129 | |
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130 | SYS_DIR sys_opendir(const char *path) { |
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131 | struct WinDir *dir = malloc(sizeof(struct WinDir)); |
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132 | wchar_t *dirpath = path2winpath(path, TRUE, NULL); |
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133 | if(!dirpath) { |
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134 | fprintf(stderr, "Cannot convert path \"%s\" to UTF16\n", path); |
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135 | free(dir); |
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136 | return NULL; |
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137 | } |
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138 | dir->first = 1; |
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139 | dir->handle = FindFirstFileW(dirpath, &dir->finddata); |
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140 | free(dirpath); |
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141 | if(dir->handle == INVALID_HANDLE_VALUE) { |
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142 | free(dir); |
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143 | return NULL; |
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144 | } |
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145 | dir->ent = NULL; |
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146 | return dir; |
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147 | } |
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148 | |
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149 | SysDirEnt* sys_readdir(SYS_DIR dir) { |
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150 | if(dir->ent) { |
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151 | free(dir->ent->name); |
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152 | free(dir->ent); |
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153 | dir->ent = NULL; |
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154 | } |
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155 | if(dir->first) { |
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156 | dir->first = 0; |
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157 | } else { |
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158 | if(FindNextFileW(dir->handle, &dir->finddata) == 0) { |
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159 | return NULL; |
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160 | } |
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161 | } |
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162 | |
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163 | size_t namelen = wcslen(dir->finddata.cFileName); |
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164 | |
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165 | char *name = malloc((namelen+1)*4); |
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166 | int nlen = WideCharToMultiByte( |
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167 | CP_UTF8, |
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168 | 0, |
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169 | dir->finddata.cFileName, |
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170 | -1, |
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171 | name, |
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172 | 256, |
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173 | NULL, |
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174 | NULL); |
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175 | if(nlen > 0) { |
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176 | name[nlen] = 0; |
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177 | SysDirEnt *ent = malloc(sizeof(SysDirEnt)); |
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178 | ent->name = name; |
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179 | dir->ent = ent; |
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180 | return ent; |
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181 | } else { |
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182 | return NULL; |
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183 | } |
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184 | } |
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185 | |
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186 | void sys_closedir(SYS_DIR dir) { |
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187 | if(dir->ent) { |
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188 | free(dir->ent->name); |
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189 | free(dir->ent); |
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190 | } |
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191 | FindClose(dir->handle); |
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192 | free(dir); |
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193 | } |
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194 | |
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195 | FILE* sys_fopen(const char *path, const char *mode) { |
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196 | wchar_t *fpath = path2winpath(path, FALSE, NULL); |
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197 | wchar_t *fmode = path2winpath(mode, FALSE, NULL); |
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198 | |
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199 | FILE *file = (fpath && fmode) ? _wfopen(fpath, fmode) : NULL; |
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200 | free(fpath); |
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201 | free(fmode); |
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202 | return file; |
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203 | } |
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204 | |
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205 | int sys_stat(const char *path, SYS_STAT *s) { |
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206 | wchar_t *fpath = path2winpath(path, FALSE, NULL); |
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207 | if(!fpath) { |
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208 | fprintf(stderr, "Cannot convert path \"%s\" to UTF16\n", path); |
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209 | return -1; |
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210 | } |
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211 | int ret = _wstat64(fpath, s); |
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212 | free(fpath); |
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213 | return ret; |
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214 | } |
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215 | |
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216 | int sys_rename(const char *oldpath, const char *newpath) { |
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217 | wchar_t *o = path2winpath(oldpath, FALSE, NULL); |
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218 | wchara_t *n = path2winpath(newpath, FALSE, NULL); |
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219 | if(!o || !n) { |
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220 | return -1; |
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221 | } |
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222 | |
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223 | struct __stat64 s; |
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224 | if(!_wstat64(n, &s)) { |
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225 | if(_wunlink(n)) { |
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226 | fprintf(stderr, "sys_rename: cannot delete existing file: %ls\n", n); |
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227 | } |
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228 | } |
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229 | |
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230 | int ret = _wrename(o, n); |
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231 | free(o); |
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232 | free(n); |
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233 | return ret; |
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234 | } |
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235 | |
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236 | #endif |