2 * @(#)dir.c 1.4 87/11/06 Public Domain.
4 * A public domain implementation of BSD directory routines for
5 * MS-DOS. Written by Michael Rendell ({uunet,utai}michael@garfield),
7 * Ported to OS/2 by Kai Uwe Rommel
8 * December 1989, February 1990
9 * Change for HPFS support, October 1990
12 #include <sys/types.h>
27 int attributes = A_DIR | A_HIDDEN;
30 static char *getdirent(char *);
31 static void free_dircontents(struct _dircontents *);
35 static FILEFINDBUF find;
39 DIR *opendir(char *name)
45 struct _dircontents *dp;
46 char nbuf[MAXPATHLEN + 1];
50 if ( ((c = nbuf[strlen(nbuf) - 1]) == '\\' || c == '/') &&
53 nbuf[strlen(nbuf) - 1] = 0;
55 if ( nbuf[strlen(nbuf) - 1] == ':' )
59 if ( nbuf[strlen(nbuf) - 1] == ':' )
62 if (stat(nbuf, &statb) < 0 || (statb.st_mode & S_IFMT) != S_IFDIR)
65 if ( (dirp = malloc(sizeof(DIR))) == NULL )
68 if ( nbuf[strlen(nbuf) - 1] == '.' )
69 strcpy(nbuf + strlen(nbuf) - 1, "*.*");
71 if ( ((c = nbuf[strlen(nbuf) - 1]) == '\\' || c == '/') &&
75 strcat(nbuf, "\\*.*");
78 dirp -> dd_contents = dirp -> dd_cp = NULL;
80 if ((s = getdirent(nbuf)) == NULL)
85 if (((dp = malloc(sizeof(struct _dircontents))) == NULL) ||
86 ((dp -> _d_entry = malloc(strlen(s) + 1)) == NULL) )
90 free_dircontents(dirp -> dd_contents);
95 if (dirp -> dd_contents)
96 dirp -> dd_cp = dirp -> dd_cp -> _d_next = dp;
98 dirp -> dd_contents = dirp -> dd_cp = dp;
100 strcpy(dp -> _d_entry, s);
101 dp -> _d_next = NULL;
103 dp -> _d_size = find.cbFile;
104 dp -> _d_mode = find.attrFile;
105 dp -> _d_time = *(unsigned *) &(find.ftimeLastWrite);
106 dp -> _d_date = *(unsigned *) &(find.fdateLastWrite);
108 while ((s = getdirent(NULL)) != NULL);
110 dirp -> dd_cp = dirp -> dd_contents;
116 void closedir(DIR * dirp)
118 free_dircontents(dirp -> dd_contents);
123 struct direct *readdir(DIR * dirp)
125 static struct direct dp;
127 if (dirp -> dd_cp == NULL)
130 dp.d_namlen = dp.d_reclen =
131 strlen(strcpy(dp.d_name, dirp -> dd_cp -> _d_entry));
135 dp.d_size = dirp -> dd_cp -> _d_size;
136 dp.d_mode = dirp -> dd_cp -> _d_mode;
137 dp.d_time = dirp -> dd_cp -> _d_time;
138 dp.d_date = dirp -> dd_cp -> _d_date;
140 dirp -> dd_cp = dirp -> dd_cp -> _d_next;
147 void seekdir(DIR * dirp, long off)
150 struct _dircontents *dp;
154 for (dp = dirp -> dd_contents; --i >= 0 && dp; dp = dp -> _d_next);
156 dirp -> dd_loc = off - (i + 1);
162 long telldir(DIR * dirp)
164 return dirp -> dd_loc;
168 static void free_dircontents(struct _dircontents * dp)
170 struct _dircontents *odp;
175 free(dp -> _d_entry);
177 dp = (odp = dp) -> _d_next;
185 int IsFileSystemFAT(char *dir)
189 BYTE bData[64], bName[3];
192 if ( _osmode == DOS_MODE )
196 /* We separate FAT and HPFS file systems here.
197 * Filenames read from a FAT system are converted to lower case
198 * while the case of filenames read from a HPFS (and other future
199 * file systems, like Unix-compatibles) is preserved.
202 if ( isalpha(dir[0]) && (dir[1] == ':') )
203 nDrive = toupper(dir[0]) - '@';
205 DosQCurDisk(&nDrive, &lMap);
207 bName[0] = (char) (nDrive + '@');
211 cbData = sizeof(bData);
213 if ( !DosQFSAttach(bName, 0U, 1U, bData, &cbData, 0L) )
214 return !strcmp(bData + (*(USHORT *) (bData + 2) + 7), "FAT");
218 /* End of this ugly code */
223 static char *getdirent(char *dir)
228 { /* get first entry */
229 lower = IsFileSystemFAT(dir);
233 done = DosFindFirst(dir, &hdir, attributes,
234 &find, sizeof(find), &count, 0L);
236 else /* get next entry */
237 done = DosFindNext(hdir, &find, sizeof(find), &count);
240 strlwr(find.achName);