Mercurial > dwindows
annotate os2/dirent.c @ 2743:a31c2e3a781e
GTK: Fix build issues due to the location of the DW_SIZE_AUTO definition.
I tried to place it with the other internal control size constants, however
they aren't used on some platforms like GTK... so had to move it to a
section where it will always be included.
author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
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date | Mon, 20 Dec 2021 14:19:43 +0000 |
parents | 6baf177f335c |
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rev | line source |
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3 | 1 #include <stdio.h> |
2 #include <stdlib.h> | |
3 #include <string.h> | |
4 #include <ctype.h> | |
5 | |
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6 #define INCL_DOSFILEMGR |
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7 #define INCL_DOSERRORS |
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Rename compat.c/h dwcompat.c/h and configure option to --with-dwcompat.
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8 #include "dwcompat.h" |
3 | 9 #include <errno.h> |
10 | |
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11 #ifdef __WATCOMC__ |
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12 #include "platform\dirent.h" |
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13 typedef struct _dirdescr DIRW; |
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14 #define DIR DIRW |
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15 #endif |
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16 |
3 | 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 */ | |
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62 static char API getFSType(const char *path) |
3 | 63 { |
64 static char cache[1+26]; | |
65 char drive[3], info[512]; | |
66 Word unit, infolen; | |
67 char r; | |
68 | |
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69 if (isalpha((int)path[0]) && path[1] == ':') { |
3 | 70 unit = toupper(path[0]) - '@'; |
71 path += 2; | |
72 } else { | |
73 ULONG driveMap; | |
74 if (DosQueryCurrentDisk(&unit, &driveMap)) | |
75 return 0; | |
76 } | |
77 | |
78 if ((path[0] == '\\' || path[0] == '/') | |
79 && (path[1] == '\\' || path[1] == '/')) | |
80 return 0; | |
81 | |
82 if (cache [unit]) | |
83 return cache [unit]; | |
84 | |
85 drive[0] = '@' + unit; | |
86 drive[1] = ':'; | |
87 drive[2] = '\0'; | |
88 infolen = sizeof info; | |
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89 if (DosQueryFSAttach((PSZ)drive, 0, FSAIL_QUERYNAME, (PVOID)info, &infolen)) |
3 | 90 return 0; |
91 if (infolen >= sizeof(FSQBUFFER2)) { | |
92 FSQBUFFER2 *p = (FSQBUFFER2 *)info; | |
93 r = p->szFSDName[p->cbName]; | |
94 } else | |
95 r = 0; | |
96 return cache [unit] = r; | |
97 } | |
98 | |
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99 char * API _abs_path(const char *name, char *buffer, int len) |
3 | 100 { |
101 char buf[4]; | |
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102 if (isalpha((int)name[0]) && name[1] == ':' && name[2] == '\0') { |
3 | 103 buf[0] = name[0]; |
104 buf[1] = name[1]; | |
105 buf[2] = '.'; | |
106 buf[3] = '\0'; | |
107 name = buf; | |
108 } | |
109 if (DosQueryPathInfo((PSZ)name, FIL_QUERYFULLNAME, buffer, len)) | |
110 return NULL; | |
111 return buffer; | |
112 } | |
113 | |
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114 DIR * API _openxdir(const char *path, unsigned att_mask) |
3 | 115 { |
116 DIR *dir; | |
117 char name[MAXPATHLEN+3]; | |
118 Word rc; | |
119 | |
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120 if(!path) |
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121 return NULL; |
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122 |
3 | 123 dir = malloc(sizeof(DIR)); |
124 if (dir == NULL) { | |
125 errno = ENOMEM; | |
126 return NULL; | |
127 } | |
128 | |
129 strncpy(name, path, MAXPATHLEN); | |
130 name[MAXPATHLEN] = '\0'; | |
131 switch (name[strlen(name)-1]) { | |
132 default: | |
133 strcat(name, "\\"); | |
134 case '\\': | |
135 case '/': | |
136 case ':': | |
137 ; | |
138 } | |
139 strcat(name, "."); | |
140 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
141 strcpy(dir->name, name); | |
142 if (dir->name[strlen(dir->name)-1] == '\\') | |
143 strcat(dir->name, "*"); | |
144 else | |
145 strcat(dir->name, "\\*"); | |
146 | |
147 dir->fstype = getFSType(dir->name); | |
148 dir->attrmask = att_mask | A_DIR; | |
149 | |
150 dir->handle = HDIR_CREATE; | |
151 dir->count = 100; | |
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152 rc = DosFindFirst((PSZ)dir->name, &dir->handle, dir->attrmask, |
3 | 153 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); |
154 switch (rc) { | |
155 default: | |
156 free(dir); | |
157 error(rc); | |
158 return NULL; | |
159 case NO_ERROR: | |
160 case ERROR_NO_MORE_FILES: | |
161 ; | |
162 } | |
163 | |
164 dir->number = 0; | |
165 dir->index = 0; | |
166 dir->next = (FFBUF *)dir->ffbuf; | |
167 | |
168 return (DIR *)dir; | |
169 } | |
170 | |
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171 DIR * API _opendir(const char *pathname) |
3 | 172 { |
173 return openxdir(pathname, 0); | |
174 } | |
175 | |
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176 struct dirent * API _readdir(DIR *dir) |
3 | 177 { |
178 static int dummy_ino = 2; | |
179 | |
180 if (dir->index == dir->count) { | |
181 Word rc; | |
182 dir->count = 100; | |
183 rc = DosFindNext(dir->handle, dir->ffbuf, | |
184 sizeof dir->ffbuf, &dir->count); | |
185 if (rc) { | |
186 error(rc); | |
187 return NULL; | |
188 } | |
189 | |
190 dir->index = 0; | |
191 dir->next = (FFBUF *)dir->ffbuf; | |
192 } | |
193 | |
194 if (dir->index == dir->count) | |
195 return NULL; | |
196 | |
197 memcpy(dir->entry.d_name, dir->next->achName, dir->next->cchName); | |
198 dir->entry.d_name[dir->next->cchName] = '\0'; | |
199 dir->entry.d_ino = dummy_ino++; | |
200 dir->entry.d_reclen = dir->next->cchName; | |
201 dir->entry.d_namlen = dir->next->cchName; | |
202 dir->entry.d_size = dir->next->cbFile; | |
203 dir->entry.d_attribute = dir->next->attrFile; | |
204 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
205 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
206 | |
207 switch (dir->fstype) { | |
208 case 'F': /* FAT */ | |
209 case 'C': /* CDFS */ | |
210 if (dir->next->attrFile & FILE_DIRECTORY) | |
211 strupr(dir->entry.d_name); | |
212 else | |
213 strlwr(dir->entry.d_name); | |
214 } | |
215 | |
216 dir->next = (FFBUF *)((BYTE *)dir->next + dir->next->oNextEntryOffset); | |
217 ++dir->number; | |
218 ++dir->index; | |
219 | |
220 return &dir->entry; | |
221 } | |
222 | |
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223 long API _telldir(DIR *dir) |
3 | 224 { |
225 return dir->number; | |
226 } | |
227 | |
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228 void API _seekdir(DIR *dir, long off) |
3 | 229 { |
230 if (dir->number > off) { | |
231 char name[MAXPATHLEN+2]; | |
232 Word rc; | |
233 | |
234 DosFindClose(dir->handle); | |
235 | |
236 strcpy(name, dir->name); | |
237 strcat(name, "*"); | |
238 | |
239 dir->handle = HDIR_CREATE; | |
240 dir->count = 32767; | |
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241 rc = DosFindFirst((PSZ)name, &dir->handle, dir->attrmask, |
3 | 242 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); |
243 switch (rc) { | |
244 default: | |
245 error(rc); | |
246 return; | |
247 case NO_ERROR: | |
248 case ERROR_NO_MORE_FILES: | |
249 ; | |
250 } | |
251 | |
252 dir->number = 0; | |
253 dir->index = 0; | |
254 dir->next = (FFBUF *)dir->ffbuf; | |
255 } | |
256 | |
257 while (dir->number < off && readdir(dir)) | |
258 ; | |
259 } | |
260 | |
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261 void API _closedir(DIR *dir) |
3 | 262 { |
263 DosFindClose(dir->handle); | |
264 free(dir); | |
265 } | |
266 | |
267 /*****************************************************************************/ | |
268 | |
269 #ifdef TEST | |
270 | |
271 main(int argc, char **argv) | |
272 { | |
273 int i; | |
274 DIR *dir; | |
275 struct dirent *ep; | |
276 | |
277 for (i = 1; i < argc; ++i) { | |
278 dir = opendir(argv[i]); | |
279 if (!dir) | |
280 continue; | |
281 while (ep = readdir(dir)) | |
282 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
283 printf("%s%s\n", argv[i], ep->d_name); | |
284 else | |
285 printf("%s/%s\n", argv[i], ep->d_name); | |
286 closedir(dir); | |
287 } | |
288 | |
289 return 0; | |
290 } | |
291 | |
292 #endif | |
293 |