Mercurial > dwindows
annotate os2/dirent.c @ 29:a33dfdc5b40a
Forgot to add the EMX .def file.
| author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
|---|---|
| date | Fri, 17 Aug 2001 12:25:52 +0000 |
| parents | d9e87e8bcf1d |
| children | 75bf3051235f |
| rev | line source |
|---|---|
| 3 | 1 #ifdef OS2 |
| 2 | |
| 3 #include <stdio.h> | |
| 4 #include <stdlib.h> | |
| 5 #include <string.h> | |
| 6 #include <ctype.h> | |
| 7 | |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
8 #include "platform/dirent.h" |
| 3 | 9 #include <errno.h> |
| 10 | |
| 11 /*#ifndef __EMX__ | |
| 12 #include <libx.h> | |
| 13 #endif */ | |
| 14 | |
| 15 #define INCL_DOSFILEMGR | |
| 16 #define INCL_DOSERRORS | |
| 17 #include <os2.h> | |
| 18 | |
| 19 # define FFBUF FILEFINDBUF3 | |
| 20 # define Word ULONG | |
| 21 /* | |
| 22 * LS20 recommends a request count of 100, but according to the | |
| 23 * APAR text it does not lead to missing files, just to funny | |
| 24 * numbers of returned entries. | |
| 25 * | |
| 26 * LS30 HPFS386 requires a count greater than 2, or some files | |
| 27 * are missing (those starting with a character less that '.'). | |
| 28 * | |
| 29 * Novell looses entries which overflow the buffer. In previous | |
| 30 * versions of dirent2, this could have lead to missing files | |
| 31 * when the average length of 100 directory entries was 40 bytes | |
| 32 * or more (quite unlikely for files on a Novell server). | |
| 33 * | |
| 34 * Conclusion: Make sure that the entries all fit into the buffer | |
| 35 * and that the buffer is large enough for more than 2 entries | |
| 36 * (each entry is at most 300 bytes long). And ignore the LS20 | |
| 37 * effect. | |
| 38 */ | |
| 39 # define Count 25 | |
| 40 # define BufSz (25 * (sizeof(FILEFINDBUF3)+1)) | |
| 41 | |
| 42 #if defined(__IBMC__) || defined(__IBMCPP__) | |
| 43 #define error(rc) _doserrno = rc, errno = EOS2ERR | |
| 44 #else | |
| 45 #define error(rc) errno = 255 | |
| 46 #endif | |
| 47 | |
| 48 struct _dirdescr { | |
| 49 HDIR handle; /* DosFindFirst handle */ | |
| 50 char fstype; /* filesystem type */ | |
| 51 Word count; /* valid entries in <ffbuf> */ | |
| 52 long number; /* absolute number of next entry */ | |
| 53 int index; /* relative number of next entry */ | |
| 54 FFBUF * next; /* pointer to next entry */ | |
| 55 char name[MAXPATHLEN+3]; /* directory name */ | |
| 56 unsigned attrmask; /* attribute mask for seekdir */ | |
| 57 struct dirent entry; /* buffer for directory entry */ | |
| 58 BYTE ffbuf[BufSz]; | |
| 59 }; | |
| 60 | |
| 61 /* | |
| 62 * Return first char of filesystem type, or 0 if unknown. | |
| 63 */ | |
| 64 static char | |
| 65 getFSType(const char *path) | |
| 66 { | |
| 67 static char cache[1+26]; | |
| 68 char drive[3], info[512]; | |
| 69 Word unit, infolen; | |
| 70 char r; | |
| 71 | |
| 72 if (isalpha(path[0]) && path[1] == ':') { | |
| 73 unit = toupper(path[0]) - '@'; | |
| 74 path += 2; | |
| 75 } else { | |
| 76 ULONG driveMap; | |
| 77 if (DosQueryCurrentDisk(&unit, &driveMap)) | |
| 78 return 0; | |
| 79 } | |
| 80 | |
| 81 if ((path[0] == '\\' || path[0] == '/') | |
| 82 && (path[1] == '\\' || path[1] == '/')) | |
| 83 return 0; | |
| 84 | |
| 85 if (cache [unit]) | |
| 86 return cache [unit]; | |
| 87 | |
| 88 drive[0] = '@' + unit; | |
| 89 drive[1] = ':'; | |
| 90 drive[2] = '\0'; | |
| 91 infolen = sizeof info; | |
| 92 if (DosQueryFSAttach(drive, 0, FSAIL_QUERYNAME, (PVOID)info, &infolen)) | |
| 93 return 0; | |
| 94 if (infolen >= sizeof(FSQBUFFER2)) { | |
| 95 FSQBUFFER2 *p = (FSQBUFFER2 *)info; | |
| 96 r = p->szFSDName[p->cbName]; | |
| 97 } else | |
| 98 r = 0; | |
| 99 return cache [unit] = r; | |
| 100 } | |
| 101 | |
| 102 char * | |
| 103 abs_path(const char *name, char *buffer, int len) | |
| 104 { | |
| 105 char buf[4]; | |
| 106 if (isalpha(name[0]) && name[1] == ':' && name[2] == '\0') { | |
| 107 buf[0] = name[0]; | |
| 108 buf[1] = name[1]; | |
| 109 buf[2] = '.'; | |
| 110 buf[3] = '\0'; | |
| 111 name = buf; | |
| 112 } | |
| 113 if (DosQueryPathInfo((PSZ)name, FIL_QUERYFULLNAME, buffer, len)) | |
| 114 return NULL; | |
| 115 return buffer; | |
| 116 } | |
| 117 | |
| 118 DIR * | |
| 119 openxdir(const char *path, unsigned att_mask) | |
| 120 { | |
| 121 DIR *dir; | |
| 122 char name[MAXPATHLEN+3]; | |
| 123 Word rc; | |
| 124 | |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
125 if(!path) |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
126 return NULL; |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
127 |
| 3 | 128 dir = malloc(sizeof(DIR)); |
| 129 if (dir == NULL) { | |
| 130 errno = ENOMEM; | |
| 131 return NULL; | |
| 132 } | |
| 133 | |
| 134 strncpy(name, path, MAXPATHLEN); | |
| 135 name[MAXPATHLEN] = '\0'; | |
| 136 switch (name[strlen(name)-1]) { | |
| 137 default: | |
| 138 strcat(name, "\\"); | |
| 139 case '\\': | |
| 140 case '/': | |
| 141 case ':': | |
| 142 ; | |
| 143 } | |
| 144 strcat(name, "."); | |
| 145 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
| 146 strcpy(dir->name, name); | |
| 147 if (dir->name[strlen(dir->name)-1] == '\\') | |
| 148 strcat(dir->name, "*"); | |
| 149 else | |
| 150 strcat(dir->name, "\\*"); | |
| 151 | |
| 152 dir->fstype = getFSType(dir->name); | |
| 153 dir->attrmask = att_mask | A_DIR; | |
| 154 | |
| 155 dir->handle = HDIR_CREATE; | |
| 156 dir->count = 100; | |
| 157 rc = DosFindFirst(dir->name, &dir->handle, dir->attrmask, | |
| 158 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 159 switch (rc) { | |
| 160 default: | |
| 161 free(dir); | |
| 162 error(rc); | |
| 163 return NULL; | |
| 164 case NO_ERROR: | |
| 165 case ERROR_NO_MORE_FILES: | |
| 166 ; | |
| 167 } | |
| 168 | |
| 169 dir->number = 0; | |
| 170 dir->index = 0; | |
| 171 dir->next = (FFBUF *)dir->ffbuf; | |
| 172 | |
| 173 return (DIR *)dir; | |
| 174 } | |
| 175 | |
| 176 DIR * | |
| 177 opendir(const char *pathname) | |
| 178 { | |
| 179 return openxdir(pathname, 0); | |
| 180 } | |
| 181 | |
| 182 struct dirent * | |
| 183 readdir(DIR *dir) | |
| 184 { | |
| 185 static int dummy_ino = 2; | |
| 186 | |
| 187 if (dir->index == dir->count) { | |
| 188 Word rc; | |
| 189 dir->count = 100; | |
| 190 rc = DosFindNext(dir->handle, dir->ffbuf, | |
| 191 sizeof dir->ffbuf, &dir->count); | |
| 192 if (rc) { | |
| 193 error(rc); | |
| 194 return NULL; | |
| 195 } | |
| 196 | |
| 197 dir->index = 0; | |
| 198 dir->next = (FFBUF *)dir->ffbuf; | |
| 199 } | |
| 200 | |
| 201 if (dir->index == dir->count) | |
| 202 return NULL; | |
| 203 | |
| 204 memcpy(dir->entry.d_name, dir->next->achName, dir->next->cchName); | |
| 205 dir->entry.d_name[dir->next->cchName] = '\0'; | |
| 206 dir->entry.d_ino = dummy_ino++; | |
| 207 dir->entry.d_reclen = dir->next->cchName; | |
| 208 dir->entry.d_namlen = dir->next->cchName; | |
| 209 dir->entry.d_size = dir->next->cbFile; | |
| 210 dir->entry.d_attribute = dir->next->attrFile; | |
| 211 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
| 212 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
| 213 | |
| 214 switch (dir->fstype) { | |
| 215 case 'F': /* FAT */ | |
| 216 case 'C': /* CDFS */ | |
| 217 if (dir->next->attrFile & FILE_DIRECTORY) | |
| 218 strupr(dir->entry.d_name); | |
| 219 else | |
| 220 strlwr(dir->entry.d_name); | |
| 221 } | |
| 222 | |
| 223 dir->next = (FFBUF *)((BYTE *)dir->next + dir->next->oNextEntryOffset); | |
| 224 ++dir->number; | |
| 225 ++dir->index; | |
| 226 | |
| 227 return &dir->entry; | |
| 228 } | |
| 229 | |
| 230 long | |
| 231 telldir(DIR *dir) | |
| 232 { | |
| 233 return dir->number; | |
| 234 } | |
| 235 | |
| 236 void | |
| 237 seekdir(DIR *dir, long off) | |
| 238 { | |
| 239 if (dir->number > off) { | |
| 240 char name[MAXPATHLEN+2]; | |
| 241 Word rc; | |
| 242 | |
| 243 DosFindClose(dir->handle); | |
| 244 | |
| 245 strcpy(name, dir->name); | |
| 246 strcat(name, "*"); | |
| 247 | |
| 248 dir->handle = HDIR_CREATE; | |
| 249 dir->count = 32767; | |
| 250 rc = DosFindFirst(name, &dir->handle, dir->attrmask, | |
| 251 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 252 switch (rc) { | |
| 253 default: | |
| 254 error(rc); | |
| 255 return; | |
| 256 case NO_ERROR: | |
| 257 case ERROR_NO_MORE_FILES: | |
| 258 ; | |
| 259 } | |
| 260 | |
| 261 dir->number = 0; | |
| 262 dir->index = 0; | |
| 263 dir->next = (FFBUF *)dir->ffbuf; | |
| 264 } | |
| 265 | |
| 266 while (dir->number < off && readdir(dir)) | |
| 267 ; | |
| 268 } | |
| 269 | |
| 270 void | |
| 271 closedir(DIR *dir) | |
| 272 { | |
| 273 DosFindClose(dir->handle); | |
| 274 free(dir); | |
| 275 } | |
| 276 | |
| 277 /*****************************************************************************/ | |
| 278 | |
| 279 #ifdef TEST | |
| 280 | |
| 281 main(int argc, char **argv) | |
| 282 { | |
| 283 int i; | |
| 284 DIR *dir; | |
| 285 struct dirent *ep; | |
| 286 | |
| 287 for (i = 1; i < argc; ++i) { | |
| 288 dir = opendir(argv[i]); | |
| 289 if (!dir) | |
| 290 continue; | |
| 291 while (ep = readdir(dir)) | |
| 292 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
| 293 printf("%s%s\n", argv[i], ep->d_name); | |
| 294 else | |
| 295 printf("%s/%s\n", argv[i], ep->d_name); | |
| 296 closedir(dir); | |
| 297 } | |
| 298 | |
| 299 return 0; | |
| 300 } | |
| 301 | |
| 302 #endif | |
| 303 | |
| 304 #endif /* OS2 */ | |
| 305 |