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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 | #include <sys/stat.h> |
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34 | #include <sys/types.h> |
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35 | |
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36 | #ifndef _WIN32 |
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37 | #include <unistd.h> |
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38 | #endif |
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39 | |
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40 | #include "system.h" |
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41 | |
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42 | void sys_freedirent(SysDirEnt *ent) { |
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43 | free(ent->name); |
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44 | free(ent); |
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45 | } |
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46 | |
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47 | #ifndef _WIN32 |
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48 | /* ---------- POSIX implementation ---------- */ |
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49 | |
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50 | SYS_DIR sys_opendir(const char *path) { |
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51 | DIR *dir = opendir(path); |
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52 | if(!dir) { |
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53 | return NULL; |
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54 | } |
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55 | SysDir *d = malloc(sizeof(SysDir)); |
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56 | d->dir = dir; |
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57 | d->ent = NULL; |
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58 | return d; |
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59 | } |
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60 | |
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61 | SysDirEnt* sys_readdir(SYS_DIR dir) { |
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62 | if(dir->ent) { |
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63 | free(dir->ent->name); |
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64 | free(dir->ent); |
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65 | dir->ent = NULL; |
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66 | } |
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67 | struct dirent *ent = readdir(dir->dir); |
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68 | if(ent) { |
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69 | SysDirEnt *e = malloc(sizeof(SysDirEnt)); |
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70 | e->name = strdup(ent->d_name); |
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71 | dir->ent = e; |
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72 | return e; |
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73 | } |
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74 | return NULL; |
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75 | } |
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76 | |
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77 | void sys_closedir(SYS_DIR dir) { |
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78 | closedir(dir->dir); |
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79 | if(dir->ent) { |
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80 | free(dir->ent->name); |
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81 | free(dir->ent); |
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82 | } |
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83 | free(dir); |
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84 | } |
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85 | |
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86 | FILE* sys_fopen(const char *path, const char *mode) { |
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87 | return fopen(path, mode); |
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88 | } |
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89 | |
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90 | int sys_stat(const char *path, SYS_STAT *s) { |
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91 | return stat(path, s); |
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92 | } |
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93 | |
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94 | int sys_lstat(const char *path, SYS_STAT *s) { |
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95 | return lstat(path, s); |
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96 | } |
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97 | |
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98 | int sys_rename(const char *oldpath, const char *newpath) { |
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99 | return rename(oldpath, newpath); |
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100 | } |
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101 | |
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102 | int sys_unlink(const char *path) { |
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103 | return unlink(path); |
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104 | } |
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105 | |
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106 | int sys_mkdir(const char *path) { |
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107 | return mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); |
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108 | } |
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109 | |
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110 | ssize_t sys_readlink(const char *path, char *buffer, size_t size) { |
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111 | return readlink(path, buffer, size); |
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112 | } |
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113 | |
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114 | #else |
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115 | /* ---------- Windows implementation ---------- */ |
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116 | |
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117 | static wchar_t* path2winpath(const char *path, int dir, int *newlen) { |
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118 | size_t len = strlen(path); |
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119 | size_t lenadd = dir ? 2 : 0; |
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120 | |
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121 | |
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122 | wchar_t *wpath = calloc(len+lenadd+1, sizeof(wchar_t)); |
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123 | int wlen = MultiByteToWideChar( |
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124 | CP_UTF8, |
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125 | 0, |
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126 | path, |
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127 | len, |
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128 | wpath, |
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129 | len+1 |
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130 | ); |
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131 | if(newlen) { |
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132 | *newlen = wlen; |
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133 | } |
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134 | for(int i=0;i<wlen;i++) { |
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135 | if(wpath[i] == L'/') { |
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136 | wpath[i] = L'\\'; |
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137 | } |
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138 | } |
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139 | |
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140 | if(dir) { |
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141 | if(wpath[wlen-1] != L'\\') { |
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142 | wpath[wlen++] = L'\\'; |
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143 | } |
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144 | wpath[wlen++] = L'*'; |
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145 | } |
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146 | wpath[wlen] = 0; |
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147 | |
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148 | return wpath; |
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149 | } |
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150 | |
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151 | SYS_DIR sys_opendir(const char *path) { |
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152 | struct WinDir *dir = malloc(sizeof(struct WinDir)); |
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153 | wchar_t *dirpath = path2winpath(path, TRUE, NULL); |
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154 | if(!dirpath) { |
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155 | fprintf(stderr, "Cannot convert path \"%s\" to UTF16\n", path); |
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156 | free(dir); |
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157 | return NULL; |
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158 | } |
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159 | dir->first = 1; |
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160 | dir->handle = FindFirstFileW(dirpath, &dir->finddata); |
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161 | free(dirpath); |
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162 | if(dir->handle == INVALID_HANDLE_VALUE) { |
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163 | free(dir); |
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164 | return NULL; |
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165 | } |
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166 | dir->ent = NULL; |
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167 | return dir; |
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168 | } |
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169 | |
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170 | SysDirEnt* sys_readdir(SYS_DIR dir) { |
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171 | if(dir->ent) { |
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172 | free(dir->ent->name); |
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173 | free(dir->ent); |
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174 | dir->ent = NULL; |
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175 | } |
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176 | if(dir->first) { |
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177 | dir->first = 0; |
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178 | } else { |
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179 | if(FindNextFileW(dir->handle, &dir->finddata) == 0) { |
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180 | return NULL; |
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181 | } |
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182 | } |
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183 | |
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184 | size_t namelen = wcslen(dir->finddata.cFileName); |
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185 | |
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186 | char *name = malloc((namelen+1)*4); |
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187 | int nlen = WideCharToMultiByte( |
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188 | CP_UTF8, |
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189 | 0, |
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190 | dir->finddata.cFileName, |
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191 | -1, |
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192 | name, |
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193 | 256, |
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194 | NULL, |
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195 | NULL); |
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196 | if(nlen > 0) { |
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197 | name[nlen] = 0; |
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198 | SysDirEnt *ent = malloc(sizeof(SysDirEnt)); |
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199 | ent->name = name; |
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200 | dir->ent = ent; |
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201 | return ent; |
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202 | } else { |
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203 | return NULL; |
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204 | } |
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205 | } |
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206 | |
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207 | void sys_closedir(SYS_DIR dir) { |
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208 | if(dir->ent) { |
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209 | free(dir->ent->name); |
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210 | free(dir->ent); |
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211 | } |
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212 | FindClose(dir->handle); |
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213 | free(dir); |
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214 | } |
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215 | |
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216 | FILE* sys_fopen(const char *path, const char *mode) { |
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217 | wchar_t *fpath = path2winpath(path, FALSE, NULL); |
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218 | wchar_t *fmode = path2winpath(mode, FALSE, NULL); |
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219 | |
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220 | FILE *file = (fpath && fmode) ? _wfopen(fpath, fmode) : NULL; |
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221 | free(fpath); |
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222 | free(fmode); |
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223 | return file; |
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224 | } |
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225 | |
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226 | int sys_stat(const char *path, SYS_STAT *s) { |
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227 | wchar_t *fpath = path2winpath(path, FALSE, NULL); |
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228 | if(!fpath) { |
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229 | fprintf(stderr, "Cannot convert path \"%s\" to UTF16\n", path); |
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230 | return -1; |
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231 | } |
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232 | int ret = _wstat64(fpath, s); |
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233 | free(fpath); |
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234 | return ret; |
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235 | } |
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236 | |
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237 | int sys_lstat(const char *path, SYS_STAT *s) { |
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238 | // TODO: fix |
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239 | wchar_t *fpath = path2winpath(path, FALSE, NULL); |
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240 | if(!fpath) { |
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241 | fprintf(stderr, "Cannot convert path \"%s\" to UTF16\n", path); |
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242 | return -1; |
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243 | } |
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244 | int ret = _wstat64(fpath, s); |
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245 | free(fpath); |
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246 | return ret; |
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247 | } |
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248 | |
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249 | int sys_rename(const char *oldpath, const char *newpath) { |
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250 | wchar_t *o = path2winpath(oldpath, FALSE, NULL); |
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251 | wchar_t *n = path2winpath(newpath, FALSE, NULL); |
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252 | if(!o || !n) { |
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253 | return -1; |
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254 | } |
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255 | |
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256 | struct __stat64 s; |
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257 | if(!_wstat64(n, &s)) { |
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258 | if(_wunlink(n)) { |
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259 | fprintf(stderr, "sys_rename: cannot delete existing file: %ls\n", n); |
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260 | } |
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261 | } |
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262 | |
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263 | int ret = _wrename(o, n); |
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264 | free(o); |
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265 | free(n); |
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266 | return ret; |
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267 | } |
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268 | |
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269 | int sys_unlink(const char *path) { |
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270 | wchar_t *wpath = path2winpath(path, FALSE, NULL); |
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271 | if(!wpath) { |
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272 | fprintf(stderr, "sys_unlink: cannot convert path\n"); |
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273 | return -1; |
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274 | } |
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275 | int ret = _wunlink(wpath); |
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276 | free(wpath); |
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277 | return ret; |
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278 | } |
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279 | |
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280 | int sys_mkdir(const char *path) { |
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281 | wchar_t *wpath = path2winpath(path, FALSE, NULL); |
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282 | if(!wpath) { |
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283 | fprintf(stderr, "sys_mkdir: cannot convert path\n"); |
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284 | return -1; |
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285 | } |
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286 | int ret = _wmkdir(wpath); |
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287 | free(wpath); |
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288 | return ret; |
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289 | } |
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290 | |
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291 | ssize_t sys_readlink(const char *path, char *buffer, size_t size) { |
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292 | // TODO |
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293 | fprintf(stderr, "sys_readlink: implement me\n"); |
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294 | return 1; |
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295 | } |
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296 | |
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297 | #endif |