src/xrdb.c

   1 /* Deal with the X Resource Manager.
   2    Copyright (C) 1990, 1993, 1994, 2000, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   4
   5 Author: Joseph Arceneaux
   6 Created: 4/90
   7
   8 This file is part of GNU Emacs.
   9
  10 GNU Emacs is free software: you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation, either version 3 of the License, or
  13 (at your option) any later version.
  14
  15 GNU Emacs is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  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 <errno.h>
  32 #include <epaths.h>
  33
  34 #include <stdio.h>
  35 #include <setjmp.h>
  36
  37 #include <X11/Xlib.h>
  38 #include <X11/Xatom.h>
  39 #include <X11/X.h>
  40 #include <X11/Xutil.h>
  41 #include <X11/Xresource.h>
  42 #ifdef HAVE_PWD_H
  43 #include <pwd.h>
  44 #endif
  45 #include <sys/stat.h>
  46
  47 #if !defined(S_ISDIR) && defined(S_IFDIR)
  48 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  49 #endif
  50
  51 #include "lisp.h"
  52
  53 extern char *getenv ();
  54
  55 /* This does cause trouble on AIX.  I'm going to take the comment at
  56    face value.  */
  57 #if 0
  58 extern short getuid ();         /* If this causes portability problems,
  59                                    I think we should just delete it; it'll
  60                                    default to `int' anyway.  */
  61 #endif
  62
  63 #ifdef DECLARE_GETPWUID_WITH_UID_T
  64 extern struct passwd *getpwuid (uid_t);
  65 extern struct passwd *getpwnam (const char *);
  66 #else
  67 extern struct passwd *getpwuid ();
  68 extern struct passwd *getpwnam ();
  69 #endif
  70
  71 extern char *get_system_name ();
  72
  73 /* Make sure not to #include anything after these definitions.  Let's
  74    not step on anyone's prototypes.  */
  75 #ifdef emacs
  76 /* darwin.h may have already defined these.  */
  77 #undef malloc
  78 #undef realloc
  79 #undef free
  80 #define malloc xmalloc
  81 #define realloc xrealloc
  82 #define free xfree
  83 #endif
  84
  85 char *x_get_string_resource ();
  86 static int file_p ();
  87
  88 \f
  89 /* X file search path processing.  */
  90
  91
  92 /* The string which gets substituted for the %C escape in XFILESEARCHPATH
  93    and friends, or zero if none was specified.  */
  94 char *x_customization_string;
  95
  96
  97 /* Return the value of the emacs.customization (Emacs.Customization)
  98    resource, for later use in search path decoding.  If we find no
  99    such resource, return zero.  */
 100 char *
 101 x_get_customization_string (db, name, class)
 102      XrmDatabase db;
 103      char *name, *class;
 104 {
 105   char *full_name
 106     = (char *) alloca (strlen (name) + sizeof ("customization") + 3);
 107   char *full_class
 108     = (char *) alloca (strlen (class) + sizeof ("Customization") + 3);
 109   char *result;
 110
 111   sprintf (full_name,  "%s.%s", name,  "customization");
 112   sprintf (full_class, "%s.%s", class, "Customization");
 113
 114   result = x_get_string_resource (db, full_name, full_class);
 115
 116   if (result)
 117     {
 118       char *copy = (char *) malloc (strlen (result) + 1);
 119       strcpy (copy, result);
 120       return copy;
 121     }
 122   else
 123     return 0;
 124 }
 125
 126
 127 /* Expand all the Xt-style %-escapes in STRING, whose length is given
 128    by STRING_LEN.  Here are the escapes we're supposed to recognize:
 129
 130         %N      The value of the application's class name
 131         %T      The value of the type parameter ("app-defaults" in this
 132                 context)
 133         %S      The value of the suffix parameter ("" in this context)
 134         %L      The language string associated with the specified display
 135                 (We use the "LANG" environment variable here, if it's set.)
 136         %l      The language part of the display's language string
 137                 (We treat this just like %L.  If someone can tell us what
 138                  we're really supposed to do, dandy.)
 139         %t      The territory part of the display's language string
 140                 (This never gets used.)
 141         %c      The codeset part of the display's language string
 142                 (This never gets used either.)
 143         %C      The customization string retrieved from the resource
 144                 database associated with display.
 145                 (This is x_customization_string.)
 146
 147    Return the expanded file name if it exists and is readable, and
 148    refers to %L only when the LANG environment variable is set, or
 149    otherwise provided by X.
 150
 151    ESCAPED_SUFFIX and SUFFIX are postpended to STRING if they are
 152    non-zero.  %-escapes in ESCAPED_SUFFIX are expanded; STRING is left
 153    alone.
 154
 155    Return NULL otherwise.  */
 156
 157 static char *
 158 magic_file_p (string, string_len, class, escaped_suffix, suffix)
 159      char *string;
 160      int string_len;
 161      char *class, *escaped_suffix, *suffix;
 162 {
 163   char *lang = getenv ("LANG");
 164
 165   int path_size = 100;
 166   char *path = (char *) malloc (path_size);
 167   int path_len = 0;
 168
 169   char *p = string;
 170
 171   while (p < string + string_len)
 172     {
 173       /* The chunk we're about to stick on the end of result.  */
 174       char *next = NULL;
 175       int next_len;
 176
 177       if (*p == '%')
 178         {
 179           p++;
 180
 181           if (p >= string + string_len)
 182             next_len = 0;
 183           else
 184             switch (*p)
 185               {
 186               case '%':
 187                 next = "%";
 188                 next_len = 1;
 189                 break;
 190
 191               case 'C':
 192                 next = (x_customization_string
 193                         ? x_customization_string
 194                         : "");
 195                 next_len = strlen (next);
 196                 break;
 197
 198               case 'N':
 199                 next = class;
 200                 next_len = strlen (class);
 201                 break;
 202
 203               case 'T':
 204                 next = "app-defaults";
 205                 next_len = strlen (next);
 206                 break;
 207
 208               default:
 209               case 'S':
 210                 next_len = 0;
 211                 break;
 212
 213               case 'L':
 214               case 'l':
 215                 if (! lang)
 216                   {
 217                     free (path);
 218                     return NULL;
 219                   }
 220
 221                 next = lang;
 222                 next_len = strlen (next);
 223                 break;
 224
 225               case 't':
 226               case 'c':
 227                 free (path);
 228                 return NULL;
 229               }
 230         }
 231       else
 232         next = p, next_len = 1;
 233
 234       /* Do we have room for this component followed by a '\0' ?  */
 235       if (path_len + next_len + 1 > path_size)
 236         {
 237           path_size = (path_len + next_len + 1) * 2;
 238           path = (char *) realloc (path, path_size);
 239         }
 240
 241       bcopy (next, path + path_len, next_len);
 242       path_len += next_len;
 243
 244       p++;
 245
 246       /* If we've reached the end of the string, append ESCAPED_SUFFIX.  */
 247       if (p >= string + string_len && escaped_suffix)
 248         {
 249           string = escaped_suffix;
 250           string_len = strlen (string);
 251           p = string;
 252           escaped_suffix = NULL;
 253         }
 254     }
 255
 256   /* Perhaps we should add the SUFFIX now.  */
 257   if (suffix)
 258     {
 259       int suffix_len = strlen (suffix);
 260
 261       if (path_len + suffix_len + 1 > path_size)
 262         {
 263           path_size = (path_len + suffix_len + 1);
 264           path = (char *) realloc (path, path_size);
 265         }
 266
 267       bcopy (suffix, path + path_len, suffix_len);
 268       path_len += suffix_len;
 269     }
 270
 271   path[path_len] = '\0';
 272
 273   if (! file_p (path))
 274     {
 275       free (path);
 276       return NULL;
 277     }
 278
 279   return path;
 280 }
 281
 282
 283 static char *
 284 gethomedir ()
 285 {
 286   struct passwd *pw;
 287   char *ptr;
 288   char *copy;
 289
 290   if ((ptr = getenv ("HOME")) == NULL)
 291     {
 292       if ((ptr = getenv ("LOGNAME")) != NULL
 293           || (ptr = getenv ("USER")) != NULL)
 294         pw = getpwnam (ptr);
 295       else
 296         pw = getpwuid (getuid ());
 297
 298       if (pw)
 299         ptr = pw->pw_dir;
 300     }
 301
 302   if (ptr == NULL)
 303     return xstrdup ("/");
 304
 305   copy = (char *) malloc (strlen (ptr) + 2);
 306   strcpy (copy, ptr);
 307   strcat (copy, "/");
 308
 309   return copy;
 310 }
 311
 312
 313 static int
 314 file_p (filename)
 315      char *filename;
 316 {
 317   struct stat status;
 318
 319   return (access (filename, 4) == 0             /* exists and is readable */
 320           && stat (filename, &status) == 0      /* get the status */
 321           && (S_ISDIR (status.st_mode)) == 0);  /* not a directory */
 322 }
 323
 324
 325 /* Find the first element of SEARCH_PATH which exists and is readable,
 326    after expanding the %-escapes.  Return 0 if we didn't find any, and
 327    the path name of the one we found otherwise.  */
 328
 329 static char *
 330 search_magic_path (search_path, class, escaped_suffix, suffix)
 331      char *search_path, *class, *escaped_suffix, *suffix;
 332 {
 333   register char *s, *p;
 334
 335   for (s = search_path; *s; s = p)
 336     {
 337       for (p = s; *p && *p != ':'; p++)
 338         ;
 339
 340       if (p > s)
 341         {
 342           char *path = magic_file_p (s, p - s, class, escaped_suffix, suffix);
 343           if (path)
 344             return path;
 345         }
 346       else if (*p == ':')
 347         {
 348           char *path;
 349
 350           s = "%N%S";
 351           path = magic_file_p (s, strlen (s), class, escaped_suffix, suffix);
 352           if (path)
 353             return path;
 354         }
 355
 356       if (*p == ':')
 357         p++;
 358     }
 359
 360   return 0;
 361 }
 362 \f
 363 /* Producing databases for individual sources.  */
 364
 365 static XrmDatabase
 366 get_system_app (class)
 367      char *class;
 368 {
 369   XrmDatabase db = NULL;
 370   char *path;
 371
 372   path = getenv ("XFILESEARCHPATH");
 373   if (! path) path = PATH_X_DEFAULTS;
 374
 375   path = search_magic_path (path, class, 0, 0);
 376   if (path)
 377     {
 378       db = XrmGetFileDatabase (path);
 379       free (path);
 380     }
 381
 382   return db;
 383 }
 384
 385
 386 static XrmDatabase
 387 get_fallback (display)
 388      Display *display;
 389 {
 390   return NULL;
 391 }
 392
 393
 394 static XrmDatabase
 395 get_user_app (class)
 396      char *class;
 397 {
 398   char *path;
 399   char *file = 0;
 400   char *free_it = 0;
 401
 402   /* Check for XUSERFILESEARCHPATH.  It is a path of complete file
 403      names, not directories.  */
 404   if (((path = getenv ("XUSERFILESEARCHPATH"))
 405        && (file = search_magic_path (path, class, 0, 0)))
 406
 407       /* Check for APPLRESDIR; it is a path of directories.  In each,
 408          we have to search for LANG/CLASS and then CLASS.  */
 409       || ((path = getenv ("XAPPLRESDIR"))
 410           && ((file = search_magic_path (path, class, "/%L/%N", 0))
 411               || (file = search_magic_path (path, class, "/%N", 0))))
 412
 413       /* Check in the home directory.  This is a bit of a hack; let's
 414          hope one's home directory doesn't contain any %-escapes.  */
 415       || (free_it = gethomedir (),
 416           ((file = search_magic_path (free_it, class, "%L/%N", 0))
 417            || (file = search_magic_path (free_it, class, "%N", 0)))))
 418     {
 419       XrmDatabase db = XrmGetFileDatabase (file);
 420       free (file);
 421       free (free_it);
 422       return db;
 423     }
 424
 425   free (free_it);
 426   return NULL;
 427 }
 428
 429
 430 static XrmDatabase
 431 get_user_db (display)
 432      Display *display;
 433 {
 434   XrmDatabase db;
 435   char *xdefs;
 436
 437 #ifdef PBaseSize                /* Cheap way to test for X11R4 or later.  */
 438   xdefs = XResourceManagerString (display);
 439 #else
 440   xdefs = display->xdefaults;
 441 #endif
 442
 443   if (xdefs != NULL)
 444     db = XrmGetStringDatabase (xdefs);
 445   else
 446     {
 447       char *home;
 448       char *xdefault;
 449
 450       home = gethomedir ();
 451       xdefault = (char *) malloc (strlen (home) + sizeof (".Xdefaults"));
 452       strcpy (xdefault, home);
 453       strcat (xdefault, ".Xdefaults");
 454       db = XrmGetFileDatabase (xdefault);
 455       free (home);
 456       free (xdefault);
 457     }
 458
 459 #ifdef HAVE_XSCREENRESOURCESTRING
 460   /* Get the screen-specific resources too.  */
 461   xdefs = XScreenResourceString (DefaultScreenOfDisplay (display));
 462   if (xdefs != NULL)
 463     {
 464       XrmMergeDatabases (XrmGetStringDatabase (xdefs), &db);
 465       XFree (xdefs);
 466     }
 467 #endif
 468
 469   return db;
 470 }
 471
 472 static XrmDatabase
 473 get_environ_db ()
 474 {
 475   XrmDatabase db;
 476   char *p;
 477   char *path = 0, *home = 0, *host;
 478
 479   if ((p = getenv ("XENVIRONMENT")) == NULL)
 480     {
 481       home = gethomedir ();
 482       host = get_system_name ();
 483       path = (char *) malloc (strlen (home)
 484                               + sizeof (".Xdefaults-")
 485                               + strlen (host));
 486       sprintf (path, "%s%s%s", home, ".Xdefaults-", host);
 487       p = path;
 488     }
 489
 490   db = XrmGetFileDatabase (p);
 491
 492   free (path);
 493   free (home);
 494
 495   return db;
 496 }
 497 \f
 498 /* External interface.  */
 499
 500 /* Types of values that we can find in a database */
 501
 502 #define XrmStringType "String"  /* String representation */
 503 XrmRepresentation x_rm_string;  /* Quark representation */
 504
 505 /* Load X resources based on the display and a possible -xrm option. */
 506
 507 XrmDatabase
 508 x_load_resources (display, xrm_string, myname, myclass)
 509      Display *display;
 510      char *xrm_string, *myname, *myclass;
 511 {
 512   XrmDatabase user_database;
 513   XrmDatabase rdb;
 514   XrmDatabase db;
 515   char line[256];
 516
 517   char *helv = "-*-helvetica-medium-r-*--*-120-*-*-*-*-iso8859-1";
 518
 519 #ifdef USE_MOTIF
 520   char *courier = "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1";
 521   extern Lisp_Object Vdouble_click_time;
 522 #endif
 523
 524   x_rm_string = XrmStringToQuark (XrmStringType);
 525 #ifndef USE_X_TOOLKIT
 526   /* pmr@osf.org says this shouldn't be done if USE_X_TOOLKIT.
 527      I suspect it's because the toolkit version does this elsewhere.  */
 528   XrmInitialize ();
 529 #endif
 530   rdb = XrmGetStringDatabase ("");
 531
 532   /* Add some font defaults.  If the font `helv' doesn't exist, widgets
 533      will use some other default font.  */
 534 #ifdef USE_MOTIF
 535
 536   sprintf (line, "%s.pane.background: grey75", myclass);
 537   XrmPutLineResource (&rdb, line);
 538   sprintf (line, "%s*fontList: %s", myclass, helv);
 539   XrmPutLineResource (&rdb, line);
 540   sprintf (line, "%s*menu*background: grey75", myclass);
 541   XrmPutLineResource (&rdb, line);
 542   sprintf (line, "%s*menubar*background: grey75", myclass);
 543   XrmPutLineResource (&rdb, line);
 544   sprintf (line, "%s*verticalScrollBar.background: grey75", myclass);
 545   XrmPutLineResource (&rdb, line);
 546   sprintf (line, "%s*verticalScrollBar.troughColor: grey75", myclass);
 547   XrmPutLineResource (&rdb, line);
 548   sprintf (line, "%s.dialog*.background: grey75", myclass);
 549   XrmPutLineResource (&rdb, line);
 550   sprintf (line, "%s*fsb.Text.background: white", myclass);
 551   XrmPutLineResource (&rdb, line);
 552   sprintf (line, "%s*fsb.FilterText.background: white", myclass);
 553   XrmPutLineResource (&rdb, line);
 554   sprintf (line, "%s*fsb*DirList.background: white", myclass);
 555   XrmPutLineResource (&rdb, line);
 556   sprintf (line, "%s*fsb*ItemsList.background: white", myclass);
 557   XrmPutLineResource (&rdb, line);
 558   sprintf (line, "%s*fsb*background: grey75", myclass);
 559   XrmPutLineResource (&rdb, line);
 560   sprintf (line, "%s*fsb.Text.fontList: %s", myclass, courier);
 561   XrmPutLineResource (&rdb, line);
 562   sprintf (line, "%s*fsb.FilterText.fontList: %s", myclass, courier);
 563   XrmPutLineResource (&rdb, line);
 564   sprintf (line, "%s*fsb*ItemsList.fontList: %s", myclass, courier);
 565   XrmPutLineResource (&rdb, line);
 566   sprintf (line, "%s*fsb*DirList.fontList: %s", myclass, courier);
 567   XrmPutLineResource (&rdb, line);
 568
 569   /* Set double click time of list boxes in the file selection
 570      dialog from `double-click-time'.  */
 571   if (INTEGERP (Vdouble_click_time) && XINT (Vdouble_click_time) > 0)
 572     {
 573       sprintf (line, "%s*fsb*DirList.doubleClickInterval: %d",
 574                myclass, XFASTINT (Vdouble_click_time));
 575       XrmPutLineResource (&rdb, line);
 576       sprintf (line, "%s*fsb*ItemsList.doubleClickInterval: %d",
 577                myclass, XFASTINT (Vdouble_click_time));
 578       XrmPutLineResource (&rdb, line);
 579     }
 580
 581 #else /* not USE_MOTIF */
 582
 583   sprintf (line, "Emacs.dialog*.font: %s", helv);
 584   XrmPutLineResource (&rdb, line);
 585   sprintf (line, "Emacs.dialog*.background: grey75");
 586   XrmPutLineResource (&rdb, line);
 587   sprintf (line, "*XlwMenu*font: %s", helv);
 588   XrmPutLineResource (&rdb, line);
 589   sprintf (line, "*XlwMenu*background: grey75");
 590   XrmPutLineResource (&rdb, line);
 591   sprintf (line, "Emacs*verticalScrollBar.background: grey75");
 592   XrmPutLineResource (&rdb, line);
 593
 594 #endif /* not USE_MOTIF */
 595
 596   user_database = get_user_db (display);
 597
 598   /* Figure out what the "customization string" is, so we can use it
 599      to decode paths.  */
 600   free (x_customization_string);
 601   x_customization_string
 602     = x_get_customization_string (user_database, myname, myclass);
 603
 604   /* Get application system defaults */
 605   db = get_system_app (myclass);
 606   if (db != NULL)
 607     XrmMergeDatabases (db, &rdb);
 608
 609   /* Get Fallback resources */
 610   db = get_fallback (display);
 611   if (db != NULL)
 612     XrmMergeDatabases (db, &rdb);
 613
 614   /* Get application user defaults */
 615   db = get_user_app (myclass);
 616   if (db != NULL)
 617     XrmMergeDatabases (db, &rdb);
 618
 619   /* get User defaults */
 620   if (user_database != NULL)
 621     XrmMergeDatabases (user_database, &rdb);
 622
 623   /* Get Environment defaults. */
 624   db = get_environ_db ();
 625   if (db != NULL)
 626     XrmMergeDatabases (db, &rdb);
 627
 628   /* Last, merge in any specification from the command line. */
 629   if (xrm_string != NULL)
 630     {
 631       db = XrmGetStringDatabase (xrm_string);
 632       if (db != NULL)
 633         XrmMergeDatabases (db, &rdb);
 634     }
 635
 636   return rdb;
 637 }
 638
 639
 640 /* Retrieve the value of the resource specified by NAME with class CLASS
 641    and of type TYPE from database RDB.  The value is returned in RET_VALUE. */
 642
 643 int
 644 x_get_resource (rdb, name, class, expected_type, ret_value)
 645      XrmDatabase rdb;
 646      char *name, *class;
 647      XrmRepresentation expected_type;
 648      XrmValue *ret_value;
 649 {
 650   XrmValue value;
 651   XrmName namelist[100];
 652   XrmClass classlist[100];
 653   XrmRepresentation type;
 654
 655   XrmStringToNameList(name, namelist);
 656   XrmStringToClassList(class, classlist);
 657
 658   if (XrmQGetResource (rdb, namelist, classlist, &type, &value) == True
 659       && (type == expected_type))
 660     {
 661       if (type == x_rm_string)
 662         ret_value->addr = (char *) value.addr;
 663       else
 664         bcopy (value.addr, ret_value->addr, ret_value->size);
 665
 666       return value.size;
 667     }
 668
 669   return 0;
 670 }
 671
 672 /* Retrieve the string resource specified by NAME with CLASS from
 673    database RDB. */
 674
 675 char *
 676 x_get_string_resource (rdb, name, class)
 677      XrmDatabase rdb;
 678      char *name, *class;
 679 {
 680   XrmValue value;
 681
 682   if (inhibit_x_resources)
 683     /* --quick was passed, so this is a no-op.  */
 684     return NULL;
 685
 686   if (x_get_resource (rdb, name, class, x_rm_string, &value))
 687     return (char *) value.addr;
 688
 689   return (char *) 0;
 690 }
 691 \f
 692 /* Stand-alone test facilities.  */
 693
 694 #ifdef TESTRM
 695
 696 typedef char **List;
 697 #define arg_listify(len, list) (list)
 698 #define car(list) (*(list))
 699 #define cdr(list) (list + 1)
 700 #define NIL(list) (! *(list))
 701 #define free_arglist(list)
 702
 703 static List
 704 member (elt, list)
 705      char *elt;
 706      List list;
 707 {
 708   List p;
 709
 710   for (p = list; ! NIL (p); p = cdr (p))
 711     if (! strcmp (elt, car (p)))
 712       return p;
 713
 714   return p;
 715 }
 716
 717 static void
 718 fatal (msg, prog, x1, x2, x3, x4, x5)
 719     char *msg, *prog;
 720     int x1, x2, x3, x4, x5;
 721 {
 722     if (errno)
 723       perror (prog);
 724
 725     (void) fprintf (stderr, msg, prog, x1, x2, x3, x4, x5);
 726     exit (1);
 727 }
 728
 729 main (argc, argv)
 730     int argc;
 731     char **argv;
 732 {
 733   Display *display;
 734   char *displayname, *resource_string, *class, *name;
 735   XrmDatabase xdb;
 736   List arg_list, lp;
 737
 738   arg_list = arg_listify (argc, argv);
 739
 740   lp = member ("-d", arg_list);
 741   if (!NIL (lp))
 742     displayname = car (cdr (lp));
 743   else
 744     displayname = "localhost:0.0";
 745
 746   lp = member ("-xrm", arg_list);
 747   if (! NIL (lp))
 748     resource_string = car (cdr (lp));
 749   else
 750     resource_string = (char *) 0;
 751
 752   lp = member ("-c", arg_list);
 753   if (! NIL (lp))
 754     class = car (cdr (lp));
 755   else
 756     class = "Emacs";
 757
 758   lp = member ("-n", arg_list);
 759   if (! NIL (lp))
 760     name = car (cdr (lp));
 761   else
 762     name = "emacs";
 763
 764   free_arglist (arg_list);
 765
 766   if (!(display = XOpenDisplay (displayname)))
 767     fatal ("Can't open display '%s'\n", XDisplayName (displayname));
 768
 769   xdb = x_load_resources (display, resource_string, name, class);
 770
 771   /* In a real program, you'd want to also do this: */
 772   display->db = xdb;
 773
 774   while (1)
 775     {
 776       char query_name[90];
 777       char query_class[90];
 778
 779       printf ("Name: ");
 780       gets (query_name);
 781
 782       if (strlen (query_name))
 783         {
 784           char *value;
 785
 786           printf ("Class: ");
 787           gets (query_class);
 788
 789           value = x_get_string_resource (xdb, query_name, query_class);
 790
 791           if (value != NULL)
 792             printf ("\t%s(%s):  %s\n\n", query_name, query_class, value);
 793           else
 794             printf ("\tNo Value.\n\n");
 795         }
 796       else
 797         break;
 798     }
 799   printf ("\tExit.\n\n");
 800
 801   XCloseDisplay (display);
 802 }
 803 #endif /* TESTRM */
 804
 805 /* arch-tag: 37e6fbab-ed05-4363-9e76-6c4109ed511f
 806    (do not change this comment) */