Mercurial > dwindows
annotate os2/dirent.c @ 174:75bf3051235f
Fixes so you can mix compilers.
| author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
|---|---|
| date | Sun, 01 Dec 2002 12:59:24 +0000 |
| parents | d9e87e8bcf1d |
| children | 0e6f09149eaa |
| rev | line source |
|---|---|
| 3 | 1 #include <stdio.h> |
| 2 #include <stdlib.h> | |
| 3 #include <string.h> | |
| 4 #include <ctype.h> | |
| 5 | |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
6 #include "platform/dirent.h" |
| 3 | 7 #include <errno.h> |
| 8 | |
| 9 /*#ifndef __EMX__ | |
| 10 #include <libx.h> | |
| 11 #endif */ | |
| 12 | |
| 13 #define INCL_DOSFILEMGR | |
| 14 #define INCL_DOSERRORS | |
| 15 #include <os2.h> | |
| 16 | |
| 17 # define FFBUF FILEFINDBUF3 | |
| 18 # define Word ULONG | |
| 19 /* | |
| 20 * LS20 recommends a request count of 100, but according to the | |
| 21 * APAR text it does not lead to missing files, just to funny | |
| 22 * numbers of returned entries. | |
| 23 * | |
| 24 * LS30 HPFS386 requires a count greater than 2, or some files | |
| 25 * are missing (those starting with a character less that '.'). | |
| 26 * | |
| 27 * Novell looses entries which overflow the buffer. In previous | |
| 28 * versions of dirent2, this could have lead to missing files | |
| 29 * when the average length of 100 directory entries was 40 bytes | |
| 30 * or more (quite unlikely for files on a Novell server). | |
| 31 * | |
| 32 * Conclusion: Make sure that the entries all fit into the buffer | |
| 33 * and that the buffer is large enough for more than 2 entries | |
| 34 * (each entry is at most 300 bytes long). And ignore the LS20 | |
| 35 * effect. | |
| 36 */ | |
| 37 # define Count 25 | |
| 38 # define BufSz (25 * (sizeof(FILEFINDBUF3)+1)) | |
| 39 | |
| 40 #if defined(__IBMC__) || defined(__IBMCPP__) | |
| 41 #define error(rc) _doserrno = rc, errno = EOS2ERR | |
| 42 #else | |
| 43 #define error(rc) errno = 255 | |
| 44 #endif | |
| 45 | |
| 46 struct _dirdescr { | |
| 47 HDIR handle; /* DosFindFirst handle */ | |
| 48 char fstype; /* filesystem type */ | |
| 49 Word count; /* valid entries in <ffbuf> */ | |
| 50 long number; /* absolute number of next entry */ | |
| 51 int index; /* relative number of next entry */ | |
| 52 FFBUF * next; /* pointer to next entry */ | |
| 53 char name[MAXPATHLEN+3]; /* directory name */ | |
| 54 unsigned attrmask; /* attribute mask for seekdir */ | |
| 55 struct dirent entry; /* buffer for directory entry */ | |
| 56 BYTE ffbuf[BufSz]; | |
| 57 }; | |
| 58 | |
| 59 /* | |
| 60 * Return first char of filesystem type, or 0 if unknown. | |
| 61 */ | |
| 62 static char | |
| 63 getFSType(const char *path) | |
| 64 { | |
| 65 static char cache[1+26]; | |
| 66 char drive[3], info[512]; | |
| 67 Word unit, infolen; | |
| 68 char r; | |
| 69 | |
| 70 if (isalpha(path[0]) && path[1] == ':') { | |
| 71 unit = toupper(path[0]) - '@'; | |
| 72 path += 2; | |
| 73 } else { | |
| 74 ULONG driveMap; | |
| 75 if (DosQueryCurrentDisk(&unit, &driveMap)) | |
| 76 return 0; | |
| 77 } | |
| 78 | |
| 79 if ((path[0] == '\\' || path[0] == '/') | |
| 80 && (path[1] == '\\' || path[1] == '/')) | |
| 81 return 0; | |
| 82 | |
| 83 if (cache [unit]) | |
| 84 return cache [unit]; | |
| 85 | |
| 86 drive[0] = '@' + unit; | |
| 87 drive[1] = ':'; | |
| 88 drive[2] = '\0'; | |
| 89 infolen = sizeof info; | |
| 90 if (DosQueryFSAttach(drive, 0, FSAIL_QUERYNAME, (PVOID)info, &infolen)) | |
| 91 return 0; | |
| 92 if (infolen >= sizeof(FSQBUFFER2)) { | |
| 93 FSQBUFFER2 *p = (FSQBUFFER2 *)info; | |
| 94 r = p->szFSDName[p->cbName]; | |
| 95 } else | |
| 96 r = 0; | |
| 97 return cache [unit] = r; | |
| 98 } | |
| 99 | |
| 100 char * | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
101 _abs_path(const char *name, char *buffer, int len) |
| 3 | 102 { |
| 103 char buf[4]; | |
| 104 if (isalpha(name[0]) && name[1] == ':' && name[2] == '\0') { | |
| 105 buf[0] = name[0]; | |
| 106 buf[1] = name[1]; | |
| 107 buf[2] = '.'; | |
| 108 buf[3] = '\0'; | |
| 109 name = buf; | |
| 110 } | |
| 111 if (DosQueryPathInfo((PSZ)name, FIL_QUERYFULLNAME, buffer, len)) | |
| 112 return NULL; | |
| 113 return buffer; | |
| 114 } | |
| 115 | |
| 116 DIR * | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
117 _openxdir(const char *path, unsigned att_mask) |
| 3 | 118 { |
| 119 DIR *dir; | |
| 120 char name[MAXPATHLEN+3]; | |
| 121 Word rc; | |
| 122 | |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
123 if(!path) |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
124 return NULL; |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
125 |
| 3 | 126 dir = malloc(sizeof(DIR)); |
| 127 if (dir == NULL) { | |
| 128 errno = ENOMEM; | |
| 129 return NULL; | |
| 130 } | |
| 131 | |
| 132 strncpy(name, path, MAXPATHLEN); | |
| 133 name[MAXPATHLEN] = '\0'; | |
| 134 switch (name[strlen(name)-1]) { | |
| 135 default: | |
| 136 strcat(name, "\\"); | |
| 137 case '\\': | |
| 138 case '/': | |
| 139 case ':': | |
| 140 ; | |
| 141 } | |
| 142 strcat(name, "."); | |
| 143 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
| 144 strcpy(dir->name, name); | |
| 145 if (dir->name[strlen(dir->name)-1] == '\\') | |
| 146 strcat(dir->name, "*"); | |
| 147 else | |
| 148 strcat(dir->name, "\\*"); | |
| 149 | |
| 150 dir->fstype = getFSType(dir->name); | |
| 151 dir->attrmask = att_mask | A_DIR; | |
| 152 | |
| 153 dir->handle = HDIR_CREATE; | |
| 154 dir->count = 100; | |
| 155 rc = DosFindFirst(dir->name, &dir->handle, dir->attrmask, | |
| 156 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 157 switch (rc) { | |
| 158 default: | |
| 159 free(dir); | |
| 160 error(rc); | |
| 161 return NULL; | |
| 162 case NO_ERROR: | |
| 163 case ERROR_NO_MORE_FILES: | |
| 164 ; | |
| 165 } | |
| 166 | |
| 167 dir->number = 0; | |
| 168 dir->index = 0; | |
| 169 dir->next = (FFBUF *)dir->ffbuf; | |
| 170 | |
| 171 return (DIR *)dir; | |
| 172 } | |
| 173 | |
| 174 DIR * | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
175 _opendir(const char *pathname) |
| 3 | 176 { |
| 177 return openxdir(pathname, 0); | |
| 178 } | |
| 179 | |
| 180 struct dirent * | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
181 _readdir(DIR *dir) |
| 3 | 182 { |
| 183 static int dummy_ino = 2; | |
| 184 | |
| 185 if (dir->index == dir->count) { | |
| 186 Word rc; | |
| 187 dir->count = 100; | |
| 188 rc = DosFindNext(dir->handle, dir->ffbuf, | |
| 189 sizeof dir->ffbuf, &dir->count); | |
| 190 if (rc) { | |
| 191 error(rc); | |
| 192 return NULL; | |
| 193 } | |
| 194 | |
| 195 dir->index = 0; | |
| 196 dir->next = (FFBUF *)dir->ffbuf; | |
| 197 } | |
| 198 | |
| 199 if (dir->index == dir->count) | |
| 200 return NULL; | |
| 201 | |
| 202 memcpy(dir->entry.d_name, dir->next->achName, dir->next->cchName); | |
| 203 dir->entry.d_name[dir->next->cchName] = '\0'; | |
| 204 dir->entry.d_ino = dummy_ino++; | |
| 205 dir->entry.d_reclen = dir->next->cchName; | |
| 206 dir->entry.d_namlen = dir->next->cchName; | |
| 207 dir->entry.d_size = dir->next->cbFile; | |
| 208 dir->entry.d_attribute = dir->next->attrFile; | |
| 209 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
| 210 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
| 211 | |
| 212 switch (dir->fstype) { | |
| 213 case 'F': /* FAT */ | |
| 214 case 'C': /* CDFS */ | |
| 215 if (dir->next->attrFile & FILE_DIRECTORY) | |
| 216 strupr(dir->entry.d_name); | |
| 217 else | |
| 218 strlwr(dir->entry.d_name); | |
| 219 } | |
| 220 | |
| 221 dir->next = (FFBUF *)((BYTE *)dir->next + dir->next->oNextEntryOffset); | |
| 222 ++dir->number; | |
| 223 ++dir->index; | |
| 224 | |
| 225 return &dir->entry; | |
| 226 } | |
| 227 | |
| 228 long | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
229 _telldir(DIR *dir) |
| 3 | 230 { |
| 231 return dir->number; | |
| 232 } | |
| 233 | |
| 234 void | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
235 _seekdir(DIR *dir, long off) |
| 3 | 236 { |
| 237 if (dir->number > off) { | |
| 238 char name[MAXPATHLEN+2]; | |
| 239 Word rc; | |
| 240 | |
| 241 DosFindClose(dir->handle); | |
| 242 | |
| 243 strcpy(name, dir->name); | |
| 244 strcat(name, "*"); | |
| 245 | |
| 246 dir->handle = HDIR_CREATE; | |
| 247 dir->count = 32767; | |
| 248 rc = DosFindFirst(name, &dir->handle, dir->attrmask, | |
| 249 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 250 switch (rc) { | |
| 251 default: | |
| 252 error(rc); | |
| 253 return; | |
| 254 case NO_ERROR: | |
| 255 case ERROR_NO_MORE_FILES: | |
| 256 ; | |
| 257 } | |
| 258 | |
| 259 dir->number = 0; | |
| 260 dir->index = 0; | |
| 261 dir->next = (FFBUF *)dir->ffbuf; | |
| 262 } | |
| 263 | |
| 264 while (dir->number < off && readdir(dir)) | |
| 265 ; | |
| 266 } | |
| 267 | |
| 268 void | |
|
174
75bf3051235f
Fixes so you can mix compilers.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
24
diff
changeset
|
269 _closedir(DIR *dir) |
| 3 | 270 { |
| 271 DosFindClose(dir->handle); | |
| 272 free(dir); | |
| 273 } | |
| 274 | |
| 275 /*****************************************************************************/ | |
| 276 | |
| 277 #ifdef TEST | |
| 278 | |
| 279 main(int argc, char **argv) | |
| 280 { | |
| 281 int i; | |
| 282 DIR *dir; | |
| 283 struct dirent *ep; | |
| 284 | |
| 285 for (i = 1; i < argc; ++i) { | |
| 286 dir = opendir(argv[i]); | |
| 287 if (!dir) | |
| 288 continue; | |
| 289 while (ep = readdir(dir)) | |
| 290 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
| 291 printf("%s%s\n", argv[i], ep->d_name); | |
| 292 else | |
| 293 printf("%s/%s\n", argv[i], ep->d_name); | |
| 294 closedir(dir); | |
| 295 } | |
| 296 | |
| 297 return 0; | |
| 298 } | |
| 299 | |
| 300 #endif | |
| 301 |