| 1 | /* Deal with the X Resource Manager. |
| 2 | Copyright (C) 1990, 1993, 1994 Free Software Foundation. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* Written by jla, 4/90 */ |
| 22 | |
| 23 | #ifdef emacs |
| 24 | #include <config.h> |
| 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_UNISTD_H |
| 28 | #include <unistd.h> |
| 29 | #endif |
| 30 | |
| 31 | #include <epaths.h> |
| 32 | |
| 33 | #include <stdio.h> |
| 34 | |
| 35 | #if 1 /* I'd really appreciate it if this code could go away... -JimB */ |
| 36 | /* this avoids lossage in the `dual-universe' headers on AT&T SysV X11 */ |
| 37 | #ifdef USG5 |
| 38 | #ifndef SYSV |
| 39 | #define SYSV |
| 40 | #endif |
| 41 | #endif /* USG5 */ |
| 42 | |
| 43 | #endif /* 1 */ |
| 44 | |
| 45 | #include <X11/Xlib.h> |
| 46 | #include <X11/Xatom.h> |
| 47 | #if 0 |
| 48 | #include <X11/Xos.h> |
| 49 | #endif |
| 50 | #include <X11/X.h> |
| 51 | #include <X11/Xutil.h> |
| 52 | #include <X11/Xresource.h> |
| 53 | #ifdef VMS |
| 54 | #include "vms-pwd.h" |
| 55 | #else |
| 56 | #include <pwd.h> |
| 57 | #endif |
| 58 | #include <sys/stat.h> |
| 59 | |
| 60 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
| 61 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
| 62 | #endif |
| 63 | |
| 64 | #include "lisp.h" |
| 65 | |
| 66 | extern char *getenv (); |
| 67 | |
| 68 | /* This does cause trouble on AIX. I'm going to take the comment at |
| 69 | face value. */ |
| 70 | #if 0 |
| 71 | extern short getuid (); /* If this causes portability problems, |
| 72 | I think we should just delete it; it'll |
| 73 | default to `int' anyway. */ |
| 74 | #endif |
| 75 | |
| 76 | #ifdef DECLARE_GETPWUID_WITH_UID_T |
| 77 | extern struct passwd *getpwuid (uid_t); |
| 78 | extern struct passwd *getpwnam (const char *); |
| 79 | #else |
| 80 | extern struct passwd *getpwuid (); |
| 81 | extern struct passwd *getpwnam (); |
| 82 | #endif |
| 83 | |
| 84 | extern char *get_system_name (); |
| 85 | |
| 86 | /* Make sure not to #include anything after these definitions. Let's |
| 87 | not step on anyone's prototypes. */ |
| 88 | #ifdef emacs |
| 89 | #define malloc xmalloc |
| 90 | #define realloc xrealloc |
| 91 | #define free xfree |
| 92 | #endif |
| 93 | |
| 94 | char *x_get_string_resource (); |
| 95 | static int file_p (); |
| 96 | |
| 97 | \f |
| 98 | /* X file search path processing. */ |
| 99 | |
| 100 | |
| 101 | /* The string which gets substituted for the %C escape in XFILESEARCHPATH |
| 102 | and friends, or zero if none was specified. */ |
| 103 | char *x_customization_string; |
| 104 | |
| 105 | |
| 106 | /* Return the value of the emacs.customization (Emacs.Customization) |
| 107 | resource, for later use in search path decoding. If we find no |
| 108 | such resource, return zero. */ |
| 109 | char * |
| 110 | x_get_customization_string (db, name, class) |
| 111 | XrmDatabase db; |
| 112 | char *name, *class; |
| 113 | { |
| 114 | char *full_name |
| 115 | = (char *) alloca (strlen (name) + sizeof ("customization") + 3); |
| 116 | char *full_class |
| 117 | = (char *) alloca (strlen (class) + sizeof ("Customization") + 3); |
| 118 | char *result; |
| 119 | |
| 120 | sprintf (full_name, "%s.%s", name, "customization"); |
| 121 | sprintf (full_class, "%s.%s", class, "Customization"); |
| 122 | |
| 123 | result = x_get_string_resource (db, full_name, full_class); |
| 124 | |
| 125 | if (result) |
| 126 | { |
| 127 | char *copy = (char *) malloc (strlen (result) + 1); |
| 128 | strcpy (copy, result); |
| 129 | return copy; |
| 130 | } |
| 131 | else |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | |
| 136 | /* Expand all the Xt-style %-escapes in STRING, whose length is given |
| 137 | by STRING_LEN. Here are the escapes we're supposed to recognize: |
| 138 | |
| 139 | %N The value of the application's class name |
| 140 | %T The value of the type parameter ("app-defaults" in this |
| 141 | context) |
| 142 | %S The value of the suffix parameter ("" in this context) |
| 143 | %L The language string associated with the specified display |
| 144 | (We use the "LANG" environment variable here, if it's set.) |
| 145 | %l The language part of the display's language string |
| 146 | (We treat this just like %L. If someone can tell us what |
| 147 | we're really supposed to do, dandy.) |
| 148 | %t The territory part of the display's language string |
| 149 | (This never gets used.) |
| 150 | %c The codeset part of the display's language string |
| 151 | (This never gets used either.) |
| 152 | %C The customization string retrieved from the resource |
| 153 | database associated with display. |
| 154 | (This is x_customization_string.) |
| 155 | |
| 156 | Return the expanded file name if it exists and is readable, and |
| 157 | refers to %L only when the LANG environment variable is set, or |
| 158 | otherwise provided by X. |
| 159 | |
| 160 | ESCAPED_SUFFIX and SUFFIX are postpended to STRING if they are |
| 161 | non-zero. %-escapes in ESCAPED_SUFFIX are expanded; STRING is left |
| 162 | alone. |
| 163 | |
| 164 | Return NULL otherwise. */ |
| 165 | |
| 166 | static char * |
| 167 | magic_file_p (string, string_len, class, escaped_suffix, suffix) |
| 168 | char *string; |
| 169 | int string_len; |
| 170 | char *class, *escaped_suffix, *suffix; |
| 171 | { |
| 172 | char *lang = getenv ("LANG"); |
| 173 | |
| 174 | int path_size = 100; |
| 175 | char *path = (char *) malloc (path_size); |
| 176 | int path_len = 0; |
| 177 | |
| 178 | char *p = string; |
| 179 | |
| 180 | while (p < string + string_len) |
| 181 | { |
| 182 | /* The chunk we're about to stick on the end of result. */ |
| 183 | char *next = NULL; |
| 184 | int next_len; |
| 185 | |
| 186 | if (*p == '%') |
| 187 | { |
| 188 | p++; |
| 189 | |
| 190 | if (p >= string + string_len) |
| 191 | next_len = 0; |
| 192 | else |
| 193 | switch (*p) |
| 194 | { |
| 195 | case '%': |
| 196 | next = "%"; |
| 197 | next_len = 1; |
| 198 | break; |
| 199 | |
| 200 | case 'C': |
| 201 | next = (x_customization_string |
| 202 | ? x_customization_string |
| 203 | : ""); |
| 204 | next_len = strlen (next); |
| 205 | break; |
| 206 | |
| 207 | case 'N': |
| 208 | next = class; |
| 209 | next_len = strlen (class); |
| 210 | break; |
| 211 | |
| 212 | case 'T': |
| 213 | next = "app-defaults"; |
| 214 | next_len = strlen (next); |
| 215 | break; |
| 216 | |
| 217 | default: |
| 218 | case 'S': |
| 219 | next_len = 0; |
| 220 | break; |
| 221 | |
| 222 | case 'L': |
| 223 | case 'l': |
| 224 | if (! lang) |
| 225 | { |
| 226 | free (path); |
| 227 | return NULL; |
| 228 | } |
| 229 | |
| 230 | next = lang; |
| 231 | next_len = strlen (next); |
| 232 | break; |
| 233 | |
| 234 | case 't': |
| 235 | case 'c': |
| 236 | free (path); |
| 237 | return NULL; |
| 238 | } |
| 239 | } |
| 240 | else |
| 241 | next = p, next_len = 1; |
| 242 | |
| 243 | /* Do we have room for this component followed by a '\0' ? */ |
| 244 | if (path_len + next_len + 1 > path_size) |
| 245 | { |
| 246 | path_size = (path_len + next_len + 1) * 2; |
| 247 | path = (char *) realloc (path, path_size); |
| 248 | } |
| 249 | |
| 250 | bcopy (next, path + path_len, next_len); |
| 251 | path_len += next_len; |
| 252 | |
| 253 | p++; |
| 254 | |
| 255 | /* If we've reached the end of the string, append ESCAPED_SUFFIX. */ |
| 256 | if (p >= string + string_len && escaped_suffix) |
| 257 | { |
| 258 | string = escaped_suffix; |
| 259 | string_len = strlen (string); |
| 260 | p = string; |
| 261 | escaped_suffix = NULL; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | /* Perhaps we should add the SUFFIX now. */ |
| 266 | if (suffix) |
| 267 | { |
| 268 | int suffix_len = strlen (suffix); |
| 269 | |
| 270 | if (path_len + suffix_len + 1 > path_size) |
| 271 | { |
| 272 | path_size = (path_len + suffix_len + 1); |
| 273 | path = (char *) realloc (path, path_size); |
| 274 | } |
| 275 | |
| 276 | bcopy (suffix, path + path_len, suffix_len); |
| 277 | path_len += suffix_len; |
| 278 | } |
| 279 | |
| 280 | path[path_len] = '\0'; |
| 281 | |
| 282 | if (! file_p (path)) |
| 283 | { |
| 284 | free (path); |
| 285 | return NULL; |
| 286 | } |
| 287 | |
| 288 | return path; |
| 289 | } |
| 290 | |
| 291 | |
| 292 | static char * |
| 293 | gethomedir () |
| 294 | { |
| 295 | struct passwd *pw; |
| 296 | char *ptr; |
| 297 | char *copy; |
| 298 | |
| 299 | if ((ptr = getenv ("HOME")) == NULL) |
| 300 | { |
| 301 | if ((ptr = getenv ("LOGNAME")) != NULL |
| 302 | || (ptr = getenv ("USER")) != NULL) |
| 303 | pw = getpwnam (ptr); |
| 304 | else |
| 305 | pw = getpwuid (getuid ()); |
| 306 | |
| 307 | if (pw) |
| 308 | ptr = pw->pw_dir; |
| 309 | } |
| 310 | |
| 311 | if (ptr == NULL) |
| 312 | return "/"; |
| 313 | |
| 314 | copy = (char *) malloc (strlen (ptr) + 2); |
| 315 | strcpy (copy, ptr); |
| 316 | strcat (copy, "/"); |
| 317 | |
| 318 | return copy; |
| 319 | } |
| 320 | |
| 321 | |
| 322 | static int |
| 323 | file_p (path) |
| 324 | char *path; |
| 325 | { |
| 326 | struct stat status; |
| 327 | |
| 328 | return (access (path, 4) == 0 /* exists and is readable */ |
| 329 | && stat (path, &status) == 0 /* get the status */ |
| 330 | && (S_ISDIR (status.st_mode)) == 0); /* not a directory */ |
| 331 | } |
| 332 | |
| 333 | |
| 334 | /* Find the first element of SEARCH_PATH which exists and is readable, |
| 335 | after expanding the %-escapes. Return 0 if we didn't find any, and |
| 336 | the path name of the one we found otherwise. */ |
| 337 | |
| 338 | static char * |
| 339 | search_magic_path (search_path, class, escaped_suffix, suffix) |
| 340 | char *search_path, *class, *escaped_suffix, *suffix; |
| 341 | { |
| 342 | register char *s, *p; |
| 343 | |
| 344 | for (s = search_path; *s; s = p) |
| 345 | { |
| 346 | for (p = s; *p && *p != ':'; p++) |
| 347 | ; |
| 348 | |
| 349 | if (p > s) |
| 350 | { |
| 351 | char *path = magic_file_p (s, p - s, class, escaped_suffix, suffix); |
| 352 | if (path) |
| 353 | return path; |
| 354 | } |
| 355 | else if (*p == ':') |
| 356 | { |
| 357 | char *path; |
| 358 | |
| 359 | s = "%N%S"; |
| 360 | path = magic_file_p (s, strlen (s), class, escaped_suffix, suffix); |
| 361 | if (path) |
| 362 | return path; |
| 363 | } |
| 364 | |
| 365 | if (*p == ':') |
| 366 | p++; |
| 367 | } |
| 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | \f |
| 372 | /* Producing databases for individual sources. */ |
| 373 | |
| 374 | static XrmDatabase |
| 375 | get_system_app (class) |
| 376 | char *class; |
| 377 | { |
| 378 | XrmDatabase db = NULL; |
| 379 | char *path; |
| 380 | |
| 381 | path = getenv ("XFILESEARCHPATH"); |
| 382 | if (! path) path = PATH_X_DEFAULTS; |
| 383 | |
| 384 | path = search_magic_path (path, class, 0, 0); |
| 385 | if (path) |
| 386 | { |
| 387 | db = XrmGetFileDatabase (path); |
| 388 | free (path); |
| 389 | } |
| 390 | |
| 391 | return db; |
| 392 | } |
| 393 | |
| 394 | |
| 395 | static XrmDatabase |
| 396 | get_fallback (display) |
| 397 | Display *display; |
| 398 | { |
| 399 | return NULL; |
| 400 | } |
| 401 | |
| 402 | |
| 403 | static XrmDatabase |
| 404 | get_user_app (class) |
| 405 | char *class; |
| 406 | { |
| 407 | char *path; |
| 408 | char *file = 0; |
| 409 | char *free_it = 0; |
| 410 | |
| 411 | /* Check for XUSERFILESEARCHPATH. It is a path of complete file |
| 412 | names, not directories. */ |
| 413 | if (((path = getenv ("XUSERFILESEARCHPATH")) |
| 414 | && (file = search_magic_path (path, class, 0, 0))) |
| 415 | |
| 416 | /* Check for APPLRESDIR; it is a path of directories. In each, |
| 417 | we have to search for LANG/CLASS and then CLASS. */ |
| 418 | || ((path = getenv ("XAPPLRESDIR")) |
| 419 | && ((file = search_magic_path (path, class, "/%L/%N", 0)) |
| 420 | || (file = search_magic_path (path, class, "/%N", 0)))) |
| 421 | |
| 422 | /* Check in the home directory. This is a bit of a hack; let's |
| 423 | hope one's home directory doesn't contain any %-escapes. */ |
| 424 | || (free_it = gethomedir (), |
| 425 | ((file = search_magic_path (free_it, class, "%L/%N", 0)) |
| 426 | || (file = search_magic_path (free_it, class, "%N", 0))))) |
| 427 | { |
| 428 | XrmDatabase db = XrmGetFileDatabase (file); |
| 429 | free (file); |
| 430 | if (free_it) |
| 431 | free (free_it); |
| 432 | return db; |
| 433 | } |
| 434 | |
| 435 | if (free_it) |
| 436 | free (free_it); |
| 437 | return NULL; |
| 438 | } |
| 439 | |
| 440 | |
| 441 | static XrmDatabase |
| 442 | get_user_db (display) |
| 443 | Display *display; |
| 444 | { |
| 445 | XrmDatabase db; |
| 446 | char *xdefs; |
| 447 | |
| 448 | #ifdef PBaseSize /* Cheap way to test for X11R4 or later. */ |
| 449 | xdefs = XResourceManagerString (display); |
| 450 | #else |
| 451 | xdefs = display->xdefaults; |
| 452 | #endif |
| 453 | |
| 454 | if (xdefs != NULL) |
| 455 | db = XrmGetStringDatabase (xdefs); |
| 456 | else |
| 457 | { |
| 458 | char *home; |
| 459 | char *xdefault; |
| 460 | |
| 461 | home = gethomedir (); |
| 462 | xdefault = (char *) malloc (strlen (home) + sizeof (".Xdefaults")); |
| 463 | strcpy (xdefault, home); |
| 464 | strcat (xdefault, ".Xdefaults"); |
| 465 | db = XrmGetFileDatabase (xdefault); |
| 466 | free (home); |
| 467 | free (xdefault); |
| 468 | } |
| 469 | |
| 470 | #ifdef HAVE_XSCREENRESOURCESTRING |
| 471 | /* Get the screen-specific resources too. */ |
| 472 | xdefs = XScreenResourceString (DefaultScreenOfDisplay (display)); |
| 473 | if (xdefs != NULL) |
| 474 | { |
| 475 | XrmMergeDatabases (XrmGetStringDatabase (xdefs), &db); |
| 476 | XFree (xdefs); |
| 477 | } |
| 478 | #endif |
| 479 | |
| 480 | return db; |
| 481 | } |
| 482 | |
| 483 | static XrmDatabase |
| 484 | get_environ_db () |
| 485 | { |
| 486 | XrmDatabase db; |
| 487 | char *p; |
| 488 | char *path = 0, *home = 0, *host; |
| 489 | |
| 490 | if ((p = getenv ("XENVIRONMENT")) == NULL) |
| 491 | { |
| 492 | home = gethomedir (); |
| 493 | host = get_system_name (); |
| 494 | path = (char *) malloc (strlen (home) |
| 495 | + sizeof (".Xdefaults-") |
| 496 | + strlen (host)); |
| 497 | sprintf (path, "%s%s%s", home, ".Xdefaults-", host); |
| 498 | p = path; |
| 499 | } |
| 500 | |
| 501 | db = XrmGetFileDatabase (p); |
| 502 | |
| 503 | if (path) free (path); |
| 504 | if (home) free (home); |
| 505 | |
| 506 | return db; |
| 507 | } |
| 508 | \f |
| 509 | /* External interface. */ |
| 510 | |
| 511 | /* Types of values that we can find in a database */ |
| 512 | |
| 513 | #define XrmStringType "String" /* String representation */ |
| 514 | XrmRepresentation x_rm_string; /* Quark representation */ |
| 515 | |
| 516 | /* Load X resources based on the display and a possible -xrm option. */ |
| 517 | |
| 518 | XrmDatabase |
| 519 | x_load_resources (display, xrm_string, myname, myclass) |
| 520 | Display *display; |
| 521 | char *xrm_string, *myname, *myclass; |
| 522 | { |
| 523 | XrmDatabase user_database; |
| 524 | XrmDatabase rdb; |
| 525 | XrmDatabase db; |
| 526 | char line[256]; |
| 527 | char *helv = "-*-helvetica-medium-r-*--*-120-*-*-*-*-iso8859-1"; |
| 528 | #ifdef USE_MOTIF |
| 529 | char *courier = "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1"; |
| 530 | extern Lisp_Object Vdouble_click_time; |
| 531 | #endif |
| 532 | |
| 533 | x_rm_string = XrmStringToQuark (XrmStringType); |
| 534 | #ifndef USE_X_TOOLKIT |
| 535 | /* pmr@osf.org says this shouldn't be done if USE_X_TOOLKIT. |
| 536 | I suspect it's because the toolkit version does this elsewhere. */ |
| 537 | XrmInitialize (); |
| 538 | #endif |
| 539 | rdb = XrmGetStringDatabase (""); |
| 540 | |
| 541 | /* Add some font defaults. If the font `helv' doesn't exist, widgets |
| 542 | will use some other default font. */ |
| 543 | #ifdef USE_MOTIF |
| 544 | |
| 545 | sprintf (line, "%s.pane.background: grey75", myname); |
| 546 | XrmPutLineResource (&rdb, line); |
| 547 | sprintf (line, "%s*fontList: %s", myname, helv); |
| 548 | XrmPutLineResource (&rdb, line); |
| 549 | sprintf (line, "%s*menu*background: grey75", myname); |
| 550 | XrmPutLineResource (&rdb, line); |
| 551 | sprintf (line, "%s*menubar*background: grey75", myname, helv); |
| 552 | XrmPutLineResource (&rdb, line); |
| 553 | sprintf (line, "%s*verticalScrollBar.background: grey75", myname); |
| 554 | XrmPutLineResource (&rdb, line); |
| 555 | sprintf (line, "%s*verticalScrollBar.troughColor: grey75", myname); |
| 556 | XrmPutLineResource (&rdb, line); |
| 557 | sprintf (line, "%s.dialog*.background: grey75", myname); |
| 558 | XrmPutLineResource (&rdb, line); |
| 559 | sprintf (line, "%s*fsb.Text.background: white", myname); |
| 560 | XrmPutLineResource (&rdb, line); |
| 561 | sprintf (line, "%s*fsb.FilterText.background: white", myname); |
| 562 | XrmPutLineResource (&rdb, line); |
| 563 | sprintf (line, "%s*fsb*DirList.background: white", myname); |
| 564 | XrmPutLineResource (&rdb, line); |
| 565 | sprintf (line, "%s*fsb*ItemsList.background: white", myname); |
| 566 | XrmPutLineResource (&rdb, line); |
| 567 | sprintf (line, "%s*fsb*background: grey75", myname); |
| 568 | XrmPutLineResource (&rdb, line); |
| 569 | sprintf (line, "%s*fsb.Text.fontList: %s", myname, courier); |
| 570 | XrmPutLineResource (&rdb, line); |
| 571 | sprintf (line, "%s*fsb.FilterText.fontList: %s", myname, courier); |
| 572 | XrmPutLineResource (&rdb, line); |
| 573 | sprintf (line, "%s*fsb*ItemsList.fontList: %s", myname, courier); |
| 574 | XrmPutLineResource (&rdb, line); |
| 575 | sprintf (line, "%s*fsb*DirList.fontList: %s", myname, courier); |
| 576 | XrmPutLineResource (&rdb, line); |
| 577 | |
| 578 | /* Set double click time of list boxes in the file selection |
| 579 | dialog from `double-click-time'. */ |
| 580 | if (INTEGERP (Vdouble_click_time) && XINT (Vdouble_click_time) > 0) |
| 581 | { |
| 582 | sprintf (line, "%s*fsb*DirList.doubleClickInterval: %d", |
| 583 | myname, XFASTINT (Vdouble_click_time)); |
| 584 | XrmPutLineResource (&rdb, line); |
| 585 | sprintf (line, "%s*fsb*ItemsList.doubleClickInterval: %d", |
| 586 | myname, XFASTINT (Vdouble_click_time)); |
| 587 | XrmPutLineResource (&rdb, line); |
| 588 | } |
| 589 | |
| 590 | #else /* not USE_MOTIF */ |
| 591 | |
| 592 | sprintf (line, "Emacs.dialog*.font: %s", helv); |
| 593 | XrmPutLineResource (&rdb, line); |
| 594 | sprintf (line, "Emacs.dialog*.background: grey75"); |
| 595 | XrmPutLineResource (&rdb, line); |
| 596 | sprintf (line, "*XlwMenu*font: %s", helv); |
| 597 | XrmPutLineResource (&rdb, line); |
| 598 | sprintf (line, "*XlwMenu*background: grey75"); |
| 599 | XrmPutLineResource (&rdb, line); |
| 600 | sprintf (line, "Emacs*verticalScrollBar.background: grey75"); |
| 601 | XrmPutLineResource (&rdb, line); |
| 602 | |
| 603 | #endif /* not USE_MOTIF */ |
| 604 | |
| 605 | user_database = get_user_db (display); |
| 606 | |
| 607 | /* Figure out what the "customization string" is, so we can use it |
| 608 | to decode paths. */ |
| 609 | if (x_customization_string) |
| 610 | free (x_customization_string); |
| 611 | x_customization_string |
| 612 | = x_get_customization_string (user_database, myname, myclass); |
| 613 | |
| 614 | /* Get application system defaults */ |
| 615 | db = get_system_app (myclass); |
| 616 | if (db != NULL) |
| 617 | XrmMergeDatabases (db, &rdb); |
| 618 | |
| 619 | /* Get Fallback resources */ |
| 620 | db = get_fallback (display); |
| 621 | if (db != NULL) |
| 622 | XrmMergeDatabases (db, &rdb); |
| 623 | |
| 624 | /* Get application user defaults */ |
| 625 | db = get_user_app (myclass); |
| 626 | if (db != NULL) |
| 627 | XrmMergeDatabases (db, &rdb); |
| 628 | |
| 629 | /* get User defaults */ |
| 630 | if (user_database != NULL) |
| 631 | XrmMergeDatabases (user_database, &rdb); |
| 632 | |
| 633 | /* Get Environment defaults. */ |
| 634 | db = get_environ_db (); |
| 635 | if (db != NULL) |
| 636 | XrmMergeDatabases (db, &rdb); |
| 637 | |
| 638 | /* Last, merge in any specification from the command line. */ |
| 639 | if (xrm_string != NULL) |
| 640 | { |
| 641 | db = XrmGetStringDatabase (xrm_string); |
| 642 | if (db != NULL) |
| 643 | XrmMergeDatabases (db, &rdb); |
| 644 | } |
| 645 | |
| 646 | return rdb; |
| 647 | } |
| 648 | |
| 649 | |
| 650 | /* Retrieve the value of the resource specified by NAME with class CLASS |
| 651 | and of type TYPE from database RDB. The value is returned in RET_VALUE. */ |
| 652 | |
| 653 | int |
| 654 | x_get_resource (rdb, name, class, expected_type, ret_value) |
| 655 | XrmDatabase rdb; |
| 656 | char *name, *class; |
| 657 | XrmRepresentation expected_type; |
| 658 | XrmValue *ret_value; |
| 659 | { |
| 660 | XrmValue value; |
| 661 | XrmName namelist[100]; |
| 662 | XrmClass classlist[100]; |
| 663 | XrmRepresentation type; |
| 664 | |
| 665 | XrmStringToNameList(name, namelist); |
| 666 | XrmStringToClassList(class, classlist); |
| 667 | |
| 668 | if (XrmQGetResource (rdb, namelist, classlist, &type, &value) == True |
| 669 | && (type == expected_type)) |
| 670 | { |
| 671 | if (type == x_rm_string) |
| 672 | ret_value->addr = (char *) value.addr; |
| 673 | else |
| 674 | bcopy (value.addr, ret_value->addr, ret_value->size); |
| 675 | |
| 676 | return value.size; |
| 677 | } |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | /* Retrieve the string resource specified by NAME with CLASS from |
| 683 | database RDB. */ |
| 684 | |
| 685 | char * |
| 686 | x_get_string_resource (rdb, name, class) |
| 687 | XrmDatabase rdb; |
| 688 | char *name, *class; |
| 689 | { |
| 690 | XrmValue value; |
| 691 | |
| 692 | if (x_get_resource (rdb, name, class, x_rm_string, &value)) |
| 693 | return (char *) value.addr; |
| 694 | |
| 695 | return (char *) 0; |
| 696 | } |
| 697 | \f |
| 698 | /* Stand-alone test facilities. */ |
| 699 | |
| 700 | #ifdef TESTRM |
| 701 | |
| 702 | typedef char **List; |
| 703 | #define arg_listify(len, list) (list) |
| 704 | #define car(list) (*(list)) |
| 705 | #define cdr(list) (list + 1) |
| 706 | #define NIL(list) (! *(list)) |
| 707 | #define free_arglist(list) |
| 708 | |
| 709 | static List |
| 710 | member (elt, list) |
| 711 | char *elt; |
| 712 | List list; |
| 713 | { |
| 714 | List p; |
| 715 | |
| 716 | for (p = list; ! NIL (p); p = cdr (p)) |
| 717 | if (! strcmp (elt, car (p))) |
| 718 | return p; |
| 719 | |
| 720 | return p; |
| 721 | } |
| 722 | |
| 723 | static void |
| 724 | fatal (msg, prog, x1, x2, x3, x4, x5) |
| 725 | char *msg, *prog; |
| 726 | int x1, x2, x3, x4, x5; |
| 727 | { |
| 728 | extern int errno; |
| 729 | |
| 730 | if (errno) |
| 731 | perror (prog); |
| 732 | |
| 733 | (void) fprintf (stderr, msg, prog, x1, x2, x3, x4, x5); |
| 734 | exit (1); |
| 735 | } |
| 736 | |
| 737 | main (argc, argv) |
| 738 | int argc; |
| 739 | char **argv; |
| 740 | { |
| 741 | Display *display; |
| 742 | char *displayname, *resource_string, *class, *name; |
| 743 | XrmDatabase xdb; |
| 744 | List arg_list, lp; |
| 745 | |
| 746 | arg_list = arg_listify (argc, argv); |
| 747 | |
| 748 | lp = member ("-d", arg_list); |
| 749 | if (!NIL (lp)) |
| 750 | displayname = car (cdr (lp)); |
| 751 | else |
| 752 | displayname = "localhost:0.0"; |
| 753 | |
| 754 | lp = member ("-xrm", arg_list); |
| 755 | if (! NIL (lp)) |
| 756 | resource_string = car (cdr (lp)); |
| 757 | else |
| 758 | resource_string = (char *) 0; |
| 759 | |
| 760 | lp = member ("-c", arg_list); |
| 761 | if (! NIL (lp)) |
| 762 | class = car (cdr (lp)); |
| 763 | else |
| 764 | class = "Emacs"; |
| 765 | |
| 766 | lp = member ("-n", arg_list); |
| 767 | if (! NIL (lp)) |
| 768 | name = car (cdr (lp)); |
| 769 | else |
| 770 | name = "emacs"; |
| 771 | |
| 772 | free_arglist (arg_list); |
| 773 | |
| 774 | if (!(display = XOpenDisplay (displayname))) |
| 775 | fatal ("Can't open display '%s'\n", XDisplayName (displayname)); |
| 776 | |
| 777 | xdb = x_load_resources (display, resource_string, name, class); |
| 778 | |
| 779 | /* In a real program, you'd want to also do this: */ |
| 780 | display->db = xdb; |
| 781 | |
| 782 | while (1) |
| 783 | { |
| 784 | char query_name[90]; |
| 785 | char query_class[90]; |
| 786 | |
| 787 | printf ("Name: "); |
| 788 | gets (query_name); |
| 789 | |
| 790 | if (strlen (query_name)) |
| 791 | { |
| 792 | char *value; |
| 793 | |
| 794 | printf ("Class: "); |
| 795 | gets (query_class); |
| 796 | |
| 797 | value = x_get_string_resource (xdb, query_name, query_class); |
| 798 | |
| 799 | if (value != NULL) |
| 800 | printf ("\t%s(%s): %s\n\n", query_name, query_class, value); |
| 801 | else |
| 802 | printf ("\tNo Value.\n\n"); |
| 803 | } |
| 804 | else |
| 805 | break; |
| 806 | } |
| 807 | printf ("\tExit.\n\n"); |
| 808 | |
| 809 | XCloseDisplay (display); |
| 810 | } |
| 811 | #endif /* TESTRM */ |