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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ |
| 2 | /* ftw() for DJGPP. |
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| 3 | * |
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| 4 | * Recursively descent the directory hierarchy rooted in DIR, |
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| 5 | * calling FUNC for each object in the hierarchy. |
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| 6 | * |
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| 7 | * Copyright (c) 1995 Eli Zaretskii |
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| 8 | * |
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| 9 | * This software may be used freely as long as this copyright notice is |
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| 10 | * left intact. There is no warranty on this software. |
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| 11 | * |
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| 12 | */ |
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| 13 | |||
| 14 | #include |
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| 15 | #include |
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| 16 | #include |
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| 17 | #include |
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| 18 | #include |
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| 19 | #include |
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| 20 | #include |
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| 21 | #include |
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| 22 | #include |
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| 23 | |||
| 24 | static int |
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| 25 | walk_dir(char *path, int (*func)(const char *, struct stat *, int)) |
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| 26 | { |
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| 27 | DIR *dp; |
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| 28 | struct dirent *de; |
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| 29 | struct stat stbuf; |
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| 30 | int flag; |
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| 31 | int e = errno; |
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| 32 | int pathlen = strlen(path); |
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| 33 | |||
| 34 | if ((dp = opendir(path)) == 0) |
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| 35 | return -1; |
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| 36 | |||
| 37 | for (errno = 0; (de = readdir(dp)) != 0; errno = 0) |
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| 38 | { |
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| 39 | int func_result; |
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| 40 | char lastc = de->d_name[de->d_namlen - 1]; |
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| 41 | |||
| 42 | /* Skip `.' and `..' entries. Checking the last char is enough, |
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| 43 | because readdir will never return a filename which ends with |
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| 44 | a dot. */ |
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| 45 | if (lastc == '.') |
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| 46 | continue; |
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| 47 | |||
| 48 | /* Append found name to directory path. */ |
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| 49 | if (pathlen + de->d_namlen + 1 > FILENAME_MAX) |
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| 50 | { |
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| 51 | (void)closedir(dp); |
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| 52 | errno = ENAMETOOLONG; |
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| 53 | return -1; |
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| 54 | } |
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| 55 | if (path[pathlen-1] == '/' || path[pathlen-1] == '\\') |
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| 56 | pathlen--; |
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| 57 | path[pathlen] = '/'; |
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| 58 | strcpy(path + pathlen + 1, de->d_name); |
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| 59 | |||
| 60 | if (stat(path, &stbuf) < 0) |
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| 61 | flag = FTW_NS; |
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| 62 | else if (S_ISDIR(stbuf.st_mode)) |
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| 63 | flag = FTW_D; |
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| 64 | else if (S_ISLABEL(stbuf.st_mode)) |
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| 65 | flag = FTW_VL; |
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| 66 | else |
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| 67 | flag = FTW_F; |
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| 68 | |||
| 69 | /* Invoke FUNC() on this object. */ |
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| 70 | errno = e; |
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| 71 | if ((func_result = (*func)(path, &stbuf, flag)) != 0) |
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| 72 | { |
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| 73 | (void)closedir(dp); |
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| 74 | return func_result; |
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| 75 | } |
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| 76 | |||
| 77 | /* If this is a directory, walk its siblings. */ |
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| 78 | if (flag == FTW_D) |
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| 79 | { |
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| 80 | int subwalk_result; |
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| 81 | |||
| 82 | errno = e; |
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| 83 | if ((subwalk_result = walk_dir(path, func)) != 0) |
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| 84 | { |
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| 85 | (void)closedir(dp); |
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| 86 | return subwalk_result; |
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| 87 | } |
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| 88 | } |
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| 89 | |||
| 90 | /* Erase D_NAME[] from PATH. */ |
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| 91 | path[pathlen] = '\0'; |
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| 92 | } |
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| 93 | |||
| 94 | (void)closedir(dp); |
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| 95 | if (errno == 0) /* normal case: this subtree exhausted */ |
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| 96 | { |
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| 97 | errno = e;/* restore errno from previous syscall */ |
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| 98 | return 0; |
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| 99 | } |
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| 100 | else |
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| 101 | return -1; /* with whatever errno was set by readdir() */ |
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| 102 | } |
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| 103 | |||
| 104 | int |
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| 105 | ftw(const char *dir, int (*func)(const char *, struct stat *, int), |
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| 106 | int ignored) |
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| 107 | { |
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| 108 | int flag; |
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| 109 | unsigned char pathbuf[FILENAME_MAX]; |
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| 110 | int dirattr; |
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| 111 | int len; |
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| 112 | int e = errno; |
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| 113 | |||
| 114 | ignored = ignored; /* pacify -Wall */ |
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| 115 | |||
| 116 | if (dir == 0 || func == 0) |
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| 117 | { |
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| 118 | errno = EFAULT; |
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| 119 | return -1; |
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| 120 | } |
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| 121 | |||
| 122 | if (*dir == '\0') |
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| 123 | { |
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| 124 | errno = ENOENT; |
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| 125 | return -1; |
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| 126 | } |
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| 127 | |||
| 128 | strcpy(pathbuf, dir); |
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| 129 | len = strlen(pathbuf); |
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| 130 | if (pathbuf[len-1] == ':') |
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| 131 | { |
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| 132 | pathbuf[len++] = '.'; |
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| 133 | pathbuf[len] = '\0'; |
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| 134 | } |
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| 135 | |||
| 136 | /* Fail for non-directories. */ |
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| 137 | errno = 0; |
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| 138 | dirattr = _chmod(pathbuf, 0, 0); |
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| 139 | if (errno == ENOENT) |
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| 140 | return -1; |
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| 141 | else if ((dirattr & 0x10) != 0x10) |
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| 142 | { |
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| 143 | errno = ENOTDIR; |
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| 144 | return -1; |
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| 145 | } |
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| 146 | else |
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| 147 | { |
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| 148 | int func_result; |
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| 149 | struct stat stbuf; |
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| 150 | |||
| 151 | if (stat(pathbuf, &stbuf) < 0) |
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| 152 | flag = FTW_NS; |
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| 153 | else |
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| 154 | flag = FTW_D; |
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| 155 | errno = e; |
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| 156 | if ((func_result = (*func)(pathbuf, &stbuf, flag)) != 0) |
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| 157 | return func_result; |
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| 158 | |||
| 159 | return walk_dir(pathbuf, func); |
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| 160 | } |
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| 161 | } |
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| 162 | |||
| 163 | #ifdef TEST |
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| 164 | |||
| 165 | #include |
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| 166 | |||
| 167 | int |
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| 168 | ftw_walker(const char *path, struct stat *sb, int flag) |
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| 169 | { |
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| 170 | char *base; |
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| 171 | |||
| 172 | printf("%s:\t%u\t", path, sb->st_size); |
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| 173 | if (S_ISLABEL(sb->st_mode)) |
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| 174 | printf("V"); |
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| 175 | if (S_ISDIR(sb->st_mode)) |
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| 176 | printf("D"); |
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| 177 | if (S_ISCHR(sb->st_mode)) |
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| 178 | printf("C"); |
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| 179 | if (sb->st_mode & S_IRUSR) |
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| 180 | printf("r"); |
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| 181 | if (sb->st_mode & S_IWUSR) |
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| 182 | printf("w"); |
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| 183 | if (sb->st_mode & S_IXUSR) |
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| 184 | printf("x"); |
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| 185 | |||
| 186 | if (flag == FTW_NS) |
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| 187 | printf(" !!no_stat!!"); |
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| 188 | printf("\n"); |
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| 189 | |||
| 190 | base = strrchr(path, '/'); |
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| 191 | if (base == 0) |
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| 192 | base = strrchr(path, '\\'); |
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| 193 | if (base == 0) |
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| 194 | base = strrchr(path, ':'); |
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| 195 | if (strcmp(base == 0 ? path : base + 1, "xxxxx") == 0) |
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| 196 | return 8; |
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| 197 | return 0; |
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| 198 | } |
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| 199 | |||
| 200 | int |
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| 201 | main(int argc, char *argv[]) |
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| 202 | { |
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| 203 | if (argc > 1) |
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| 204 | { |
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| 205 | char msg[80]; |
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| 206 | |||
| 207 | sprintf(msg, "file_tree_walk: %d", |
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| 208 | ftw(argv[1], ftw_walker, 0)); |
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| 209 | if (errno) |
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| 210 | perror(msg); |
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| 211 | else |
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| 212 | puts(msg); |
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| 213 | } |
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| 214 | else |
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| 215 | printf("Usage: %s dir\n", argv[0]); |
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| 216 | |||
| 217 | return 0; |
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| 218 | } |
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| 219 | |||
| 220 | #endif |