Commit | Line | Data |
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f3a0bf5c | 1 | /* Deal with the X Resource Manager. |
c6c5df7f | 2 | Copyright (C) 1990, 1993 Free Software Foundation. |
f3a0bf5c JB |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
d4327fec | 6 | the Free Software Foundation; either version 2, or (at your option) |
f3a0bf5c JB |
7 | any later version. |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; see the file COPYING. If not, write to | |
16 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
17 | ||
18 | /* Written by jla, 4/90 */ | |
19 | ||
a2a4d43e JB |
20 | #ifdef emacs |
21 | #include "config.h" | |
22 | #endif | |
23 | ||
24 | #if 1 /* I'd really appreciate it if this code could go away... -JimB */ | |
25 | /* this avoids lossage in the `dual-universe' headers on AT&T SysV X11 */ | |
26 | #ifdef USG5 | |
27 | #define SYSV | |
28 | #include <unistd.h> | |
29 | #endif /* USG5 */ | |
30 | ||
31 | #endif /* 1 */ | |
54c908b5 JB |
32 | |
33 | /* This should be included before the X include files; otherwise, we get | |
34 | warnings about redefining NULL under BSD 4.3. */ | |
35 | #include <sys/param.h> | |
36 | ||
f3a0bf5c JB |
37 | #include <X11/Xlib.h> |
38 | #include <X11/Xatom.h> | |
dfc35f5f | 39 | #if 0 |
f3a0bf5c | 40 | #include <X11/Xos.h> |
dfc35f5f | 41 | #endif |
f3a0bf5c JB |
42 | #include <X11/X.h> |
43 | #include <X11/Xutil.h> | |
44 | #include <X11/Xresource.h> | |
531ff254 JB |
45 | #ifdef VMS |
46 | #include "vms-pwd.h" | |
47 | #else | |
f3a0bf5c | 48 | #include <pwd.h> |
531ff254 | 49 | #endif |
f3a0bf5c JB |
50 | #include <sys/stat.h> |
51 | ||
a2a4d43e JB |
52 | #ifndef MAXPATHLEN |
53 | #define MAXPATHLEN 256 | |
f3a0bf5c JB |
54 | #endif |
55 | ||
56 | extern char *getenv (); | |
3d5d61ae JB |
57 | |
58 | /* This does cause trouble on AIX. I'm going to take the comment at | |
59 | face value. */ | |
60 | #if 0 | |
dfc35f5f JB |
61 | extern short getuid (); /* If this causes portability problems, |
62 | I think we should just delete it; it'll | |
63 | default to `int' anyway. */ | |
3d5d61ae JB |
64 | #endif |
65 | ||
3e0be4d0 RS |
66 | #ifdef __bsdi__ |
67 | extern struct passwd *getpwuid (uid_t); | |
68 | extern struct passwd *getpwnam (const char *); | |
69 | #else | |
f3a0bf5c JB |
70 | extern struct passwd *getpwuid (); |
71 | extern struct passwd *getpwnam (); | |
3e0be4d0 | 72 | #endif |
f3a0bf5c JB |
73 | |
74 | static char * | |
75 | gethomedir (dirname) | |
76 | char *dirname; | |
77 | { | |
78 | int uid; | |
79 | struct passwd *pw; | |
80 | char *ptr; | |
81 | ||
82 | if ((ptr = getenv ("HOME")) == NULL) | |
83 | { | |
84 | if ((ptr = getenv ("USER")) != NULL) | |
85 | pw = getpwnam (ptr); | |
86 | else | |
87 | { | |
88 | uid = getuid (); | |
89 | pw = getpwuid (uid); | |
90 | } | |
91 | if (pw) | |
92 | ptr = pw->pw_dir; | |
93 | else | |
94 | { | |
95 | ptr = NULL; | |
96 | *dirname = '\0'; | |
97 | } | |
98 | } | |
99 | ||
100 | if (ptr != NULL) | |
101 | strcpy (dirname, ptr); | |
102 | ||
103 | dirname += strlen (dirname); | |
104 | *dirname = '/'; | |
105 | dirname++; | |
106 | *dirname = '\0'; | |
107 | ||
108 | return dirname; | |
109 | } | |
110 | ||
111 | static int | |
112 | file_p (path) | |
113 | char *path; | |
114 | { | |
115 | struct stat status; | |
116 | ||
dfc35f5f | 117 | return (access (path, 4) == 0 /* exists and is readable */ |
f3a0bf5c JB |
118 | && stat (path, &status) == 0 /* get the status */ |
119 | && (status.st_mode & S_IFDIR) == 0); /* not a directory */ | |
120 | } | |
121 | ||
122 | #if 0 | |
123 | #define X_DEFAULT_SEARCH_PATH "/usr/lib/X11/" | |
124 | #endif | |
125 | ||
126 | /* Isn't this just disgusting? */ | |
127 | ||
128 | #define X_DEFAULT_SEARCH_PATH "/usr/lib/X11/%L/%T/%N%S:/usr/lib/X11/%l/%T/%N%S:/usr/lib/X11/%T/%N%S" | |
129 | ||
130 | static int | |
131 | decode_magic (string, file, return_path) | |
132 | char *string, *file, *return_path; | |
133 | { | |
134 | char *p = string; | |
135 | char *t = return_path; | |
136 | ||
137 | while (*p) | |
138 | { | |
139 | if (*p == '%') | |
140 | switch (*++p) | |
141 | { | |
142 | case '%': | |
143 | *t++ = '%'; | |
144 | p++; | |
145 | break; | |
146 | ||
147 | case 'N': | |
148 | case 'T': | |
149 | case 'S': | |
150 | case 'L': | |
151 | case 'l': | |
152 | case 't': | |
153 | case 'c': | |
154 | default: | |
155 | p++; | |
156 | if (*t == '/' && *p == '/') | |
157 | p++; | |
158 | break; | |
159 | } | |
160 | else | |
161 | *t++ = *p++; | |
162 | } | |
163 | *t = '\0'; | |
164 | strcat (return_path, file); | |
165 | ||
166 | if (file_p (return_path)) | |
167 | return 1; | |
168 | ||
169 | return_path[0] = '\0'; | |
170 | return 0; | |
171 | } | |
172 | ||
173 | static int | |
174 | magic_searchpath_decoder (incantation_string, file, return_path) | |
175 | char *incantation_string, *return_path, *file; | |
176 | { | |
177 | register char *s = incantation_string; | |
178 | register char *p; | |
d4327fec JB |
179 | |
180 | /* Must be big enough for "%N%S". */ | |
181 | register int string_size = MAXPATHLEN; | |
182 | register char *string = (char *) alloca (string_size * sizeof (*string)); | |
f3a0bf5c JB |
183 | |
184 | while (*s) | |
185 | { | |
186 | p = s; | |
187 | ||
188 | while (*p && *p != ':') | |
189 | p++; | |
190 | ||
191 | if (*p == ':' && *(p + 1) == ':') | |
192 | { | |
d4327fec | 193 | /* We know string is big enough for this. */ |
f3a0bf5c JB |
194 | bcopy ("%N%S", string, 5); |
195 | if (decode_magic (string, file, return_path)) | |
196 | return 1; | |
197 | ||
198 | s = p + 1; | |
199 | continue; | |
200 | } | |
201 | ||
202 | if (p > s) | |
203 | { | |
204 | int len = p - s; | |
205 | ||
d4327fec JB |
206 | if (string_size < len+1) |
207 | { | |
208 | string_size = 2 * len; | |
209 | string = (char *) alloca (string_size * sizeof (*string)); | |
210 | } | |
f3a0bf5c | 211 | bcopy (s, string, len); |
44bbb3e0 | 212 | string[len] = '\0'; |
f3a0bf5c JB |
213 | if (decode_magic (string, file, return_path)) |
214 | return 1; | |
215 | } | |
216 | ||
44bbb3e0 | 217 | if (p && *p != 0) |
f3a0bf5c JB |
218 | s = p + 1; |
219 | else | |
220 | return 0; | |
221 | } | |
222 | ||
223 | return 0; | |
224 | } | |
225 | \f | |
226 | static XrmDatabase | |
227 | get_system_app (class) | |
228 | char *class; | |
229 | { | |
230 | XrmDatabase db; | |
231 | char path[MAXPATHLEN]; | |
232 | char *p; | |
233 | ||
234 | if ((p = getenv ("XFILESEARCHPATH")) == NULL) | |
235 | p = X_DEFAULT_SEARCH_PATH; | |
236 | ||
237 | if (! magic_searchpath_decoder (p, class, path)) | |
238 | return NULL; | |
239 | ||
240 | db = XrmGetFileDatabase (path); | |
241 | return db; | |
242 | } | |
243 | ||
244 | static XrmDatabase | |
245 | get_fallback (display) | |
246 | Display *display; | |
247 | { | |
248 | XrmDatabase db; | |
249 | ||
250 | return NULL; | |
251 | } | |
252 | ||
253 | static XrmDatabase | |
254 | get_user_app (class) | |
255 | char *class; | |
256 | { | |
257 | XrmDatabase db; | |
258 | char *magic_path; | |
259 | char path[MAXPATHLEN]; | |
260 | ||
261 | if ((magic_path = getenv ("XUSERFILESEARCHPATH")) == NULL) | |
262 | { | |
263 | char homedir[MAXPATHLEN]; | |
264 | char *default_magic; | |
265 | char *p; | |
266 | ||
267 | gethomedir (homedir); | |
268 | ||
269 | if ((p = getenv ("XAPPLRESDIR")) == NULL) | |
270 | { | |
271 | default_magic = "%s/%%L/%%N:%s/%%l/%%N:%s/%%N"; | |
272 | magic_path = (char *) alloca ((3 * strlen (homedir)) | |
273 | + strlen (default_magic)); | |
274 | sprintf (magic_path, default_magic, homedir, homedir, homedir); | |
275 | } | |
276 | else | |
277 | { | |
278 | default_magic = "%s/%%L/%%N:%s/%%l/%%N:%s/%%N:%s/%%N"; | |
279 | magic_path = (char *) alloca ((3 * strlen (p)) | |
280 | + strlen (default_magic) | |
281 | + strlen (homedir)); | |
282 | sprintf (magic_path, default_magic, p, p, p, homedir); | |
283 | } | |
284 | } | |
285 | ||
286 | if (! magic_searchpath_decoder (magic_path, class, path)) | |
287 | return NULL; | |
288 | ||
289 | db = XrmGetFileDatabase (path); | |
290 | return db; | |
291 | } | |
292 | ||
293 | static XrmDatabase | |
294 | get_user_db (display) | |
295 | Display *display; | |
296 | { | |
297 | XrmDatabase db; | |
298 | char *xdefs; | |
299 | ||
2c8d1900 | 300 | #ifdef PBaseSize /* Cheap way to test for X11R4 or later. */ |
b631f177 JB |
301 | xdefs = XResourceManagerString (display); |
302 | #else | |
a2a4d43e | 303 | xdefs = display->xdefaults; |
b631f177 JB |
304 | #endif |
305 | ||
f3a0bf5c JB |
306 | if (xdefs != NULL) |
307 | db = XrmGetStringDatabase (xdefs); | |
308 | else | |
309 | { | |
310 | char xdefault[MAXPATHLEN]; | |
311 | ||
312 | gethomedir (xdefault); | |
313 | strcat (xdefault, ".Xdefaults"); | |
314 | db = XrmGetFileDatabase (xdefault); | |
315 | } | |
316 | ||
9b37b1c2 JB |
317 | #ifdef XlibSpecificationRelease |
318 | #if XlibSpecificationRelease >= 5 | |
319 | /* Get the screen-specific resources too. */ | |
320 | xdefs = XScreenResourceString (DefaultScreenOfDisplay (display)); | |
321 | if (xdefs != NULL) | |
fdce0b39 JB |
322 | { |
323 | XrmMergeDatabases (XrmGetStringDatabase (xdefs), &db); | |
324 | XFree (xdefs); | |
325 | } | |
9b37b1c2 JB |
326 | #endif |
327 | #endif | |
328 | ||
f3a0bf5c JB |
329 | return db; |
330 | } | |
331 | ||
332 | static XrmDatabase | |
333 | get_environ_db () | |
334 | { | |
335 | XrmDatabase db; | |
336 | char *p; | |
337 | char path[MAXPATHLEN]; | |
338 | ||
339 | if ((p = getenv ("XENVIRONMENT")) == NULL) | |
340 | { | |
341 | gethomedir (path); | |
342 | strcat (path, ".Xdefaults-"); | |
343 | gethostname (path + strlen (path), MAXPATHLEN - strlen (path)); | |
344 | p = path; | |
345 | } | |
346 | ||
347 | db = XrmGetFileDatabase (p); | |
348 | return db; | |
349 | } | |
350 | \f | |
351 | /* Types of values that we can find in a database */ | |
352 | ||
353 | #define XrmStringType "String" /* String representation */ | |
354 | XrmRepresentation x_rm_string; /* Quark representation */ | |
355 | ||
356 | /* Load X resources based on the display and a possible -xrm option. */ | |
357 | ||
358 | XrmDatabase | |
359 | x_load_resources (display, xrm_string, myclass) | |
360 | Display *display; | |
361 | char *xrm_string, *myclass; | |
362 | { | |
363 | char *xdefs; | |
364 | XrmDatabase rdb; | |
365 | XrmDatabase db; | |
366 | ||
367 | x_rm_string = XrmStringToQuark (XrmStringType); | |
368 | XrmInitialize (); | |
369 | rdb = XrmGetStringDatabase (""); | |
370 | ||
371 | /* Get application system defaults */ | |
372 | db = get_system_app (myclass); | |
373 | if (db != NULL) | |
374 | XrmMergeDatabases (db, &rdb); | |
375 | ||
376 | /* Get Fallback resources */ | |
377 | db = get_fallback (display); | |
378 | if (db != NULL) | |
379 | XrmMergeDatabases (db, &rdb); | |
380 | ||
381 | /* Get application user defaults */ | |
382 | db = get_user_app (myclass); | |
383 | if (db != NULL) | |
384 | XrmMergeDatabases (db, &rdb); | |
385 | ||
386 | /* get User defaults */ | |
387 | db = get_user_db (display); | |
388 | if (db != NULL) | |
389 | XrmMergeDatabases (db, &rdb); | |
390 | ||
391 | /* Get Environment defaults. */ | |
392 | db = get_environ_db (); | |
393 | if (db != NULL) | |
394 | XrmMergeDatabases (db, &rdb); | |
395 | ||
396 | /* Last, merge in any specification from the command line. */ | |
397 | if (xrm_string != NULL) | |
398 | { | |
399 | db = XrmGetStringDatabase (xrm_string); | |
400 | if (db != NULL) | |
401 | XrmMergeDatabases (db, &rdb); | |
402 | } | |
403 | ||
404 | return rdb; | |
405 | } | |
406 | ||
407 | /* Retrieve the value of the resource specified by NAME with class CLASS | |
408 | and of type TYPE from database RDB. The value is returned in RET_VALUE. */ | |
409 | ||
410 | int | |
411 | x_get_resource (rdb, name, class, expected_type, ret_value) | |
412 | XrmDatabase rdb; | |
413 | char *name, *class; | |
414 | XrmRepresentation expected_type; | |
415 | XrmValue *ret_value; | |
416 | { | |
417 | XrmValue value; | |
418 | XrmName namelist[100]; | |
419 | XrmClass classlist[100]; | |
420 | XrmRepresentation type; | |
421 | ||
422 | XrmStringToNameList(name, namelist); | |
423 | XrmStringToClassList(class, classlist); | |
424 | ||
425 | if (XrmQGetResource (rdb, namelist, classlist, &type, &value) == True | |
426 | && (type == expected_type)) | |
427 | { | |
428 | if (type == x_rm_string) | |
41ab0754 | 429 | ret_value->addr = (char *) value.addr; |
f3a0bf5c JB |
430 | else |
431 | bcopy (value.addr, ret_value->addr, ret_value->size); | |
432 | ||
433 | return value.size; | |
434 | } | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
439 | /* Retrieve the string resource specified by NAME with CLASS from | |
440 | database RDB. */ | |
441 | ||
442 | char * | |
443 | x_get_string_resource (rdb, name, class) | |
444 | XrmDatabase rdb; | |
445 | char *name, *class; | |
446 | { | |
447 | XrmValue value; | |
448 | ||
449 | if (x_get_resource (rdb, name, class, x_rm_string, &value)) | |
450 | return (char *) value.addr; | |
451 | ||
452 | return (char *) 0; | |
453 | } | |
454 | \f | |
455 | #ifdef TESTRM | |
456 | #include <stdio.h> | |
457 | #include "arg-list.h" | |
458 | ||
459 | static void | |
460 | fatal (msg, prog, x1, x2, x3, x4, x5) | |
461 | char *msg, *prog; | |
462 | int x1, x2, x3, x4, x5; | |
463 | { | |
464 | extern int errno; | |
465 | ||
466 | if (errno) | |
467 | perror (prog); | |
468 | ||
469 | (void) fprintf (stderr, msg, prog, x1, x2, x3, x4, x5); | |
470 | exit (1); | |
471 | } | |
472 | ||
473 | main (argc, argv) | |
474 | int argc; | |
475 | char **argv; | |
476 | { | |
477 | Display *display; | |
478 | char *displayname, *resource_string, *class; | |
479 | XrmDatabase xdb; | |
480 | List *arg_list, *lp; | |
481 | ||
482 | arg_list = arg_listify (argc, argv); | |
483 | ||
484 | lp = member ("-d", arg_list); | |
485 | if (!NIL (lp)) | |
486 | displayname = car (cdr (lp)); | |
487 | else | |
488 | displayname = "localhost:0.0"; | |
489 | ||
490 | lp = member ("-xrm", arg_list); | |
491 | if (! NIL (lp)) | |
492 | resource_string = car (cdr (lp)); | |
493 | else | |
494 | resource_string = (char *) 0; | |
495 | ||
496 | lp = member ("-c", arg_list); | |
497 | if (! NIL (lp)) | |
498 | class = car (cdr (lp)); | |
499 | else | |
500 | class = "Emacs"; | |
501 | ||
502 | free_arglist (arg_list); | |
503 | ||
504 | ||
505 | ||
506 | if (!(display = XOpenDisplay (displayname))) | |
507 | fatal ("Can't open display '%s'\n", XDisplayName (displayname)); | |
508 | ||
509 | xdb = x_load_resources (display, resource_string, class); | |
510 | ||
511 | #if 0 | |
512 | /* In a real program, you'd want to also do this: */ | |
513 | display->db = xdb; | |
514 | #endif | |
515 | ||
516 | while (1) | |
517 | { | |
518 | char line[90]; | |
519 | ||
520 | printf ("String: "); | |
521 | gets (line); | |
522 | if (strlen (line)) | |
523 | { | |
524 | char *value = x_get_string_resource (xdb, line, class); | |
525 | ||
526 | if (value != NULL) | |
527 | printf ("\t%s: %s\n\n", line, value); | |
528 | else | |
529 | printf ("\tNo Value.\n\n"); | |
530 | } | |
531 | else | |
532 | break; | |
533 | } | |
534 | printf ("\tExit.\n\n"); | |
535 | ||
536 | XCloseDisplay (display); | |
537 | } | |
538 | #endif /* TESTRM */ |