Mercurial > dwindows
annotate win/dirent.c @ 358:526642f70ddd
Prefix all internally used data with _dw_ to avoid conflicts with user
data set with dw_window_set_data().
| author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
|---|---|
| date | Sun, 20 Apr 2003 13:16:32 +0000 |
| parents | e320dc29bfcd |
| children | e0ea29c3d1eb |
| rev | line source |
|---|---|
| 3 | 1 #include <stdio.h> |
| 2 #include <stdlib.h> | |
| 3 #include <string.h> | |
| 4 #include <ctype.h> | |
| 5 | |
| 6 #include <windows.h> | |
| 7 | |
| 8 #include "dirent.h" | |
| 9 #include <errno.h> | |
| 10 | |
| 11 #define error(rc) errno = 255 | |
| 12 | |
| 13 struct _dirdescr { | |
| 14 HANDLE handle; /* DosFindFirst handle */ | |
| 15 char fstype; /* filesystem type */ | |
| 16 long count; /* valid entries in <ffbuf> */ | |
| 17 long number; /* absolute number of next entry */ | |
| 18 int index; /* relative number of next entry */ | |
| 19 char name[MAXPATHLEN+3]; /* directory name */ | |
| 20 unsigned attrmask; /* attribute mask for seekdir */ | |
| 21 struct dirent entry; /* buffer for directory entry */ | |
| 22 WIN32_FIND_DATA data; | |
| 23 }; | |
| 24 | |
| 25 /* | |
| 26 * Return first char of filesystem type, or 0 if unknown. | |
| 27 */ | |
| 28 static char | |
| 29 getFSType(const char *path) | |
| 30 { | |
| 31 static char cache[1+26]; | |
| 32 char drive[3]; | |
| 33 ULONG unit; | |
| 34 char r; | |
| 35 | |
| 36 if (isalpha(path[0]) && path[1] == ':') { | |
| 37 unit = toupper(path[0]) - '@'; | |
| 38 path += 2; | |
| 39 } else { | |
| 40 return 0; | |
| 41 } | |
| 42 | |
| 43 if ((path[0] == '\\' || path[0] == '/') | |
| 44 && (path[1] == '\\' || path[1] == '/')) | |
| 45 return 0; | |
| 46 | |
| 47 if (cache [unit]) | |
| 48 return cache [unit]; | |
| 49 | |
| 50 drive[0] = '@' + unit; | |
| 51 drive[1] = ':'; | |
| 52 drive[2] = '\0'; | |
| 53 | |
| 54 r = GetDriveType(drive); | |
| 55 | |
| 56 return cache [unit] = r; | |
| 57 } | |
| 58 | |
|
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e320dc29bfcd
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59 char *abs_path(const char *name, char *buffer, int len) |
| 3 | 60 { |
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61 char *buf; |
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62 LPTSTR file; |
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63 |
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64 if(isalpha(name[0]) && name[1] == ':' && name[2] == '\0') |
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65 { |
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66 int drive = _getdrive(); |
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67 char newdrive = toupper(name[0]); |
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68 |
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69 _chdrive((newdrive - 'A')+1); |
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70 |
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71 if(getcwd(buffer, len)) |
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72 { |
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73 _chdrive(drive); |
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74 return buffer; |
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75 } |
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76 _chdrive(drive); |
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77 return NULL; |
| 3 | 78 } |
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79 if(GetFullPathName(name, len, buffer, &file)) |
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80 return buffer; |
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81 return NULL; |
| 3 | 82 } |
| 83 | |
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84 DIR *openxdir(const char *path, unsigned att_mask) |
| 3 | 85 { |
| 86 DIR *dir; | |
| 87 char name[MAXPATHLEN+3]; | |
| 88 | |
| 89 dir = malloc(sizeof(DIR)); | |
| 90 if (dir == NULL) { | |
| 91 errno = ENOMEM; | |
| 92 return NULL; | |
| 93 } | |
| 94 | |
| 95 strncpy(name, path, MAXPATHLEN); | |
| 96 name[MAXPATHLEN] = '\0'; | |
| 97 switch (name[strlen(name)-1]) { | |
| 98 default: | |
| 99 strcat(name, "\\"); | |
| 100 case '\\': | |
| 101 case '/': | |
| 102 case ':': | |
| 103 ; | |
| 104 } | |
| 105 strcat(name, "."); | |
| 106 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
| 107 strcpy(dir->name, name); | |
| 108 if (dir->name[strlen(dir->name)-1] == '\\') | |
| 109 strcat(dir->name, "*"); | |
| 110 else | |
| 111 strcat(dir->name, "\\*"); | |
| 112 | |
| 113 dir->fstype = getFSType(dir->name); | |
| 114 dir->attrmask = att_mask | A_DIR; | |
| 115 | |
| 116 dir->count = 100; | |
|
184
4ec906d40ce2
FindFirstFile returns INVALID_HANDLE_VALUE on error, not NULL.
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117 if((dir->handle = FindFirstFile(dir->name, &dir->data))==INVALID_HANDLE_VALUE) |
| 3 | 118 { |
| 119 free(dir); | |
| 120 error(rc); | |
| 121 return NULL; | |
| 122 } | |
| 123 | |
| 124 dir->number = 0; | |
| 125 dir->index = 0; | |
| 126 | |
| 127 return (DIR *)dir; | |
| 128 } | |
| 129 | |
| 130 DIR * | |
| 131 opendir(const char *pathname) | |
| 132 { | |
| 133 return openxdir(pathname, 0); | |
| 134 } | |
| 135 | |
| 136 struct dirent * | |
| 137 readdir(DIR *dir) | |
| 138 { | |
| 139 static int dummy_ino = 2; | |
| 140 | |
| 141 if (dir->number) | |
| 142 { | |
| 143 ULONG rc; | |
| 144 dir->count = 100; | |
| 145 if(!FindNextFile(dir->handle, &(dir->data))) | |
| 146 { | |
| 147 error(rc); | |
| 148 return NULL; | |
| 149 } | |
| 150 | |
| 151 dir->index = 0; | |
| 152 } | |
| 153 | |
| 154 strcpy(dir->entry.d_name, dir->data.cFileName); | |
| 155 dir->entry.d_ino = dummy_ino++; | |
| 156 dir->entry.d_reclen = strlen(dir->data.cFileName); | |
| 157 dir->entry.d_namlen = strlen(dir->data.cFileName); | |
| 158 dir->entry.d_size = dir->data.nFileSizeLow; | |
| 159 dir->entry.d_attribute = dir->data.dwFileAttributes; | |
| 160 #if 0 | |
| 161 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
| 162 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
| 163 #endif | |
| 164 | |
| 165 dir->number++; | |
| 166 dir->index++; | |
| 167 return &dir->entry; | |
| 168 } | |
| 169 | |
| 170 long | |
| 171 telldir(DIR *dir) | |
| 172 { | |
| 173 return dir->number; | |
| 174 } | |
| 175 | |
| 176 void | |
| 177 seekdir(DIR *dir, long off) | |
| 178 { | |
| 179 if (dir->number > off) { | |
| 180 char name[MAXPATHLEN+2]; | |
| 181 ULONG rc; | |
| 182 | |
| 183 FindClose(dir->handle); | |
| 184 | |
| 185 strcpy(name, dir->name); | |
| 186 strcat(name, "*"); | |
| 187 | |
| 188 if((dir->handle = FindFirstFile(name, &(dir->data)))==NULL) | |
| 189 { | |
| 190 error(rc); | |
| 191 return; | |
| 192 } | |
| 193 | |
| 194 dir->number = 0; | |
| 195 dir->index = 0; | |
| 196 } | |
| 197 | |
| 198 while (dir->number < off && readdir(dir)) | |
| 199 ; | |
| 200 } | |
| 201 | |
| 202 void | |
| 203 closedir(DIR *dir) | |
| 204 { | |
| 205 FindClose(dir->handle); | |
| 206 free(dir); | |
| 207 } | |
| 208 | |
| 209 /*****************************************************************************/ | |
| 210 | |
| 211 #ifdef TEST | |
| 212 | |
| 213 main(int argc, char **argv) | |
| 214 { | |
| 215 int i; | |
| 216 DIR *dir; | |
| 217 struct dirent *ep; | |
| 218 | |
| 219 for (i = 1; i < argc; ++i) { | |
| 220 dir = opendir(argv[i]); | |
| 221 if (!dir) | |
| 222 continue; | |
| 223 while (ep = readdir(dir)) | |
| 224 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
| 225 printf("%s%s\n", argv[i], ep->d_name); | |
| 226 else | |
| 227 printf("%s/%s\n", argv[i], ep->d_name); | |
| 228 closedir(dir); | |
| 229 } | |
| 230 | |
| 231 return 0; | |
| 232 } | |
| 233 | |
| 234 #endif |