1 | /*
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2 | ** dir.c - Dir
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3 | **
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4 | ** See Copyright Notice in mruby.h
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5 | */
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6 |
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7 | #include "mruby.h"
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8 | #include "mruby/class.h"
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9 | #include "mruby/data.h"
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10 | #include "mruby/string.h"
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11 | #include "error.h"
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12 | #include <sys/types.h>
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13 | #if defined(_WIN32) || defined(_WIN64)
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14 | #define MAXPATHLEN 1024
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15 | #if !defined(PATH_MAX)
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16 | #define PATH_MAX MAX_PATH
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17 | #endif
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18 | #define S_ISDIR(B) ((B)&_S_IFDIR)
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19 | #include "Win/dirent.c"
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20 | #include <direct.h>
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21 | #define rmdir _rmdir
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22 | #define getcwd _getcwd
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23 | #define mkdir _mkdir
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24 | #define chdir _chdir
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25 | #else
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26 | #include <sys/param.h>
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27 | #include <dirent.h>
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28 | #include <unistd.h>
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29 | #endif
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30 | #include <sys/stat.h>
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31 | #include <fcntl.h>
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32 | #include <stdio.h>
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33 | #include <stdlib.h>
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34 | #include <signal.h>
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35 | #include <string.h>
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36 |
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37 | /* with/without IO module */
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38 | #ifdef ENABLE_IO
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39 | #include "mruby/ext/io.h"
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40 | #else
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41 | #define E_IO_ERROR E_RUNTIME_ERROR
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42 | #endif
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43 |
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44 | struct mrb_dir {
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45 | DIR *dir;
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46 | };
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47 |
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48 | void
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49 | mrb_dir_free(mrb_state *mrb, void *ptr)
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50 | {
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51 | struct mrb_dir *mdir = (struct mrb_dir *)ptr;
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52 |
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53 | if (mdir->dir) {
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54 | closedir(mdir->dir);
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55 | mdir->dir = NULL;
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56 | }
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57 | mrb_free(mrb, mdir);
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58 | }
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59 |
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60 | static struct mrb_data_type mrb_dir_type = { "DIR", mrb_dir_free };
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61 |
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62 | mrb_value
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63 | mrb_dir_close(mrb_state *mrb, mrb_value self)
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64 | {
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65 | struct mrb_dir *mdir;
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66 | mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
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67 | if (!mdir) return mrb_nil_value();
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68 | if (!mdir->dir) {
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69 | mrb_raise(mrb, E_IO_ERROR, "closed directory");
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70 | }
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71 | if (closedir(mdir->dir) == -1) {
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72 | mrb_sys_fail(mrb, "closedir");
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73 | }
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74 | mdir->dir = NULL;
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75 | return mrb_nil_value();
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76 | }
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77 |
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78 | mrb_value
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79 | mrb_dir_init(mrb_state *mrb, mrb_value self)
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80 | {
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81 | DIR *dir;
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82 | struct mrb_dir *mdir;
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83 | mrb_value path;
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84 | char *cpath;
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85 |
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86 | mdir = (struct mrb_dir *)DATA_PTR(self);
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87 | if (mdir) {
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88 | mrb_dir_free(mrb, mdir);
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89 | }
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90 | DATA_TYPE(self) = &mrb_dir_type;
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91 | DATA_PTR(self) = NULL;
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92 |
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93 | mdir = (struct mrb_dir *)mrb_malloc(mrb, sizeof(*mdir));
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94 | mdir->dir = NULL;
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95 | DATA_PTR(self) = mdir;
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96 |
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97 | mrb_get_args(mrb, "S", &path);
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98 | cpath = mrb_str_to_cstr(mrb, path);
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99 | if ((dir = opendir(cpath)) == NULL) {
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100 | mrb_sys_fail(mrb, cpath);
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101 | }
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102 | mdir->dir = dir;
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103 | return self;
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104 | }
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105 |
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106 | mrb_value
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107 | mrb_dir_delete(mrb_state *mrb, mrb_value klass)
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108 | {
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109 | mrb_value path;
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110 | char *cpath;
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111 |
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112 | mrb_get_args(mrb, "S", &path);
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113 | cpath = mrb_str_to_cstr(mrb, path);
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114 | if (rmdir(cpath) == -1) {
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115 | mrb_sys_fail(mrb, cpath);
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116 | }
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117 | return mrb_fixnum_value(0);
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118 | }
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119 |
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120 | mrb_value
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121 | mrb_dir_existp(mrb_state *mrb, mrb_value klass)
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122 | {
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123 | mrb_value path;
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124 | struct stat sb;
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125 | char *cpath;
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126 |
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127 | mrb_get_args(mrb, "S", &path);
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128 | cpath = mrb_str_to_cstr(mrb, path);
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129 | if (stat(cpath, &sb) == 0 && S_ISDIR(sb.st_mode)) {
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130 | return mrb_true_value();
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131 | } else {
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132 | return mrb_false_value();
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133 | }
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134 | }
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135 |
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136 | mrb_value
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137 | mrb_dir_getwd(mrb_state *mrb, mrb_value klass)
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138 | {
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139 | mrb_value path;
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140 |
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141 | path = mrb_str_buf_new(mrb, MAXPATHLEN);
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142 | if (getcwd(RSTRING_PTR(path), MAXPATHLEN) == NULL) {
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143 | mrb_sys_fail(mrb, "getcwd(2)");
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144 | }
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145 | mrb_str_resize(mrb, path, strlen(RSTRING_PTR(path)));
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146 | return path;
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147 | }
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148 |
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149 | mrb_value
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150 | mrb_dir_mkdir(mrb_state *mrb, mrb_value klass)
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151 | {
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152 | mrb_int mode;
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153 | mrb_value spath;
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154 | char *path;
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155 |
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156 | mode = 0777;
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157 | mrb_get_args(mrb, "S|i", &spath, &mode);
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158 | path = mrb_str_to_cstr(mrb, spath);
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159 | #ifndef _WIN32
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160 | if (mkdir(path, mode) == -1) {
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161 | #else
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162 | if (mkdir(path) == -1) {
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163 | #endif
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164 | mrb_sys_fail(mrb, path);
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165 | }
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166 | return mrb_fixnum_value(0);
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167 | }
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168 |
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169 | mrb_value
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170 | mrb_dir_chdir(mrb_state *mrb, mrb_value klass)
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171 | {
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172 | mrb_value spath;
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173 | char *path;
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174 |
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175 | mrb_get_args(mrb, "S", &spath);
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176 | path = mrb_str_to_cstr(mrb, spath);
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177 | if (chdir(path) == -1) {
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178 | mrb_sys_fail(mrb, path);
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179 | }
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180 | return mrb_fixnum_value(0);
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181 | }
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182 |
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183 | mrb_value
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184 | mrb_dir_chroot(mrb_state *mrb, mrb_value self)
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185 | {
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186 | #if defined(_WIN32) || defined(_WIN64) || defined(__android__)
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187 | mrb_raise(mrb, E_NOTIMP_ERROR, "chroot() unreliable on Win platforms");
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188 | return mrb_fixnum_value(0);
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189 | #else
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190 | mrb_value spath;
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191 | char *path;
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192 | int res;
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193 |
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194 | mrb_get_args(mrb, "S", &spath);
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195 | path = mrb_str_to_cstr(mrb, spath);
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196 | res = chroot(path);
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197 | if (res == -1) {
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198 | mrb_sys_fail(mrb, path);
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199 | }
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200 |
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201 | return mrb_fixnum_value(res);
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202 | #endif
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203 | }
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204 |
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205 | mrb_value
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206 | mrb_dir_read(mrb_state *mrb, mrb_value self)
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207 | {
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208 | struct mrb_dir *mdir;
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209 | struct dirent *dp;
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210 |
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211 | mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
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212 | if (!mdir) return mrb_nil_value();
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213 | if (!mdir->dir) {
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214 | mrb_raise(mrb, E_IO_ERROR, "closed directory");
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215 | }
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216 | dp = readdir(mdir->dir);
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217 | if (dp != NULL) {
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218 | return mrb_str_new_cstr(mrb, dp->d_name);
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219 | } else {
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220 | return mrb_nil_value();
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221 | }
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222 | }
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223 |
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224 | mrb_value
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225 | mrb_dir_rewind(mrb_state *mrb, mrb_value self)
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226 | {
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227 | struct mrb_dir *mdir;
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228 |
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229 | mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
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230 | if (!mdir) return mrb_nil_value();
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231 | if (!mdir->dir) {
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232 | mrb_raise(mrb, E_IO_ERROR, "closed directory");
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233 | }
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234 | rewinddir(mdir->dir);
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235 | return self;
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236 | }
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237 |
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238 | mrb_value
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239 | mrb_dir_seek(mrb_state *mrb, mrb_value self)
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240 | {
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241 | #if defined(_WIN32) || defined(_WIN64) || defined(__android__)
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242 | mrb_raise(mrb, E_NOTIMP_ERROR, "dirseek() unreliable on Win platforms");
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243 | return self;
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244 | #else
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245 | struct mrb_dir *mdir;
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246 | mrb_int pos;
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247 |
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248 | mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
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249 | if (!mdir) return mrb_nil_value();
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250 | if (!mdir->dir) {
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251 | mrb_raise(mrb, E_IO_ERROR, "closed directory");
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252 | }
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253 | mrb_get_args(mrb, "i", &pos);
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254 | seekdir(mdir->dir, (long)pos);
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255 | return self;
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256 | #endif
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257 | }
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258 |
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259 | mrb_value
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260 | mrb_dir_tell(mrb_state *mrb, mrb_value self)
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261 | {
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262 | #if defined(_WIN32) || defined(_WIN64) || defined(__android__)
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263 | mrb_raise(mrb, E_NOTIMP_ERROR, "dirtell() unreliable on Win platforms");
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264 | return mrb_fixnum_value(0);
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265 | #else
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266 | struct mrb_dir *mdir;
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267 | mrb_int pos;
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268 |
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269 | mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
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270 | if (!mdir) return mrb_nil_value();
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271 | if (!mdir->dir) {
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272 | mrb_raise(mrb, E_IO_ERROR, "closed directory");
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273 | }
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274 | pos = (mrb_int)telldir(mdir->dir);
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275 | return mrb_fixnum_value(pos);
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276 | #endif
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277 | }
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278 |
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279 | void
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280 | mrb_mruby_dir_gem_init(mrb_state *mrb)
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281 | {
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282 | struct RClass *d;
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283 |
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284 | d = mrb_define_class(mrb, "Dir", mrb->object_class);
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285 | MRB_SET_INSTANCE_TT(d, MRB_TT_DATA);
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286 | mrb_define_class_method(mrb, d, "delete", mrb_dir_delete, MRB_ARGS_REQ(1));
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287 | mrb_define_class_method(mrb, d, "exist?", mrb_dir_existp, MRB_ARGS_REQ(1));
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288 | mrb_define_class_method(mrb, d, "getwd", mrb_dir_getwd, MRB_ARGS_NONE());
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289 | mrb_define_class_method(mrb, d, "mkdir", mrb_dir_mkdir, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
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290 | mrb_define_class_method(mrb, d, "_chdir", mrb_dir_chdir, MRB_ARGS_REQ(1));
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291 | mrb_define_class_method(mrb, d, "chroot", mrb_dir_chroot, MRB_ARGS_REQ(1));
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292 |
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293 | mrb_define_method(mrb, d, "close", mrb_dir_close, MRB_ARGS_NONE());
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294 | mrb_define_method(mrb, d, "initialize", mrb_dir_init, MRB_ARGS_REQ(1));
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295 | mrb_define_method(mrb, d, "read", mrb_dir_read, MRB_ARGS_NONE());
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296 | mrb_define_method(mrb, d, "rewind", mrb_dir_rewind, MRB_ARGS_NONE());
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297 | mrb_define_method(mrb, d, "seek", mrb_dir_seek, MRB_ARGS_REQ(1));
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298 | mrb_define_method(mrb, d, "tell", mrb_dir_tell, MRB_ARGS_NONE());
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299 | }
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300 |
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301 | void
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302 | mrb_mruby_dir_gem_final(mrb_state *mrb)
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303 | {
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304 | }
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