/* Deal with the X Resource Manager. Copyright (C) 1990, 1993, 1994, 2000, 2001 Free Software Foundation. This file is part of GNU Emacs. GNU Emacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Written by jla, 4/90 */ #ifdef emacs #include #endif #ifdef HAVE_UNISTD_H #include #endif #include #include #if 1 /* I'd really appreciate it if this code could go away... -JimB */ /* This avoids lossage in the `dual-universe' headers on AT&T SysV X11. Don't do it on Solaris, because it breaks compilation with XFree86 4.0.3 (and probably many other X11R6 releases) on Solaris 2 */ #if defined(USG5) && !defined(SOLARIS2) #ifndef SYSV #define SYSV #endif #endif /* USG5 && !SOLARIS2 */ #endif /* 1 */ #include #include #if 0 #include #endif #include #include #include #ifdef VMS #include "vms-pwd.h" #else #include #endif #include #if !defined(S_ISDIR) && defined(S_IFDIR) #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) #endif #include "lisp.h" extern char *getenv (); /* This does cause trouble on AIX. I'm going to take the comment at face value. */ #if 0 extern short getuid (); /* If this causes portability problems, I think we should just delete it; it'll default to `int' anyway. */ #endif #ifdef DECLARE_GETPWUID_WITH_UID_T extern struct passwd *getpwuid (uid_t); extern struct passwd *getpwnam (const char *); #else extern struct passwd *getpwuid (); extern struct passwd *getpwnam (); #endif extern char *get_system_name (); /* Make sure not to #include anything after these definitions. Let's not step on anyone's prototypes. */ #ifdef emacs #define malloc xmalloc #define realloc xrealloc #define free xfree #endif char *x_get_string_resource (); static int file_p (); /* X file search path processing. */ /* The string which gets substituted for the %C escape in XFILESEARCHPATH and friends, or zero if none was specified. */ char *x_customization_string; /* Return the value of the emacs.customization (Emacs.Customization) resource, for later use in search path decoding. If we find no such resource, return zero. */ char * x_get_customization_string (db, name, class) XrmDatabase db; char *name, *class; { char *full_name = (char *) alloca (strlen (name) + sizeof ("customization") + 3); char *full_class = (char *) alloca (strlen (class) + sizeof ("Customization") + 3); char *result; sprintf (full_name, "%s.%s", name, "customization"); sprintf (full_class, "%s.%s", class, "Customization"); result = x_get_string_resource (db, full_name, full_class); if (result) { char *copy = (char *) malloc (strlen (result) + 1); strcpy (copy, result); return copy; } else return 0; } /* Expand all the Xt-style %-escapes in STRING, whose length is given by STRING_LEN. Here are the escapes we're supposed to recognize: %N The value of the application's class name %T The value of the type parameter ("app-defaults" in this context) %S The value of the suffix parameter ("" in this context) %L The language string associated with the specified display (We use the "LANG" environment variable here, if it's set.) %l The language part of the display's language string (We treat this just like %L. If someone can tell us what we're really supposed to do, dandy.) %t The territory part of the display's language string (This never gets used.) %c The codeset part of the display's language string (This never gets used either.) %C The customization string retrieved from the resource database associated with display. (This is x_customization_string.) Return the expanded file name if it exists and is readable, and refers to %L only when the LANG environment variable is set, or otherwise provided by X. ESCAPED_SUFFIX and SUFFIX are postpended to STRING if they are non-zero. %-escapes in ESCAPED_SUFFIX are expanded; STRING is left alone. Return NULL otherwise. */ static char * magic_file_p (string, string_len, class, escaped_suffix, suffix) char *string; int string_len; char *class, *escaped_suffix, *suffix; { char *lang = getenv ("LANG"); int path_size = 100; char *path = (char *) malloc (path_size); int path_len = 0; char *p = string; while (p < string + string_len) { /* The chunk we're about to stick on the end of result. */ char *next = NULL; int next_len; if (*p == '%') { p++; if (p >= string + string_len) next_len = 0; else switch (*p) { case '%': next = "%"; next_len = 1; break; case 'C': next = (x_customization_string ? x_customization_string : ""); next_len = strlen (next); break; case 'N': next = class; next_len = strlen (class); break; case 'T': next = "app-defaults"; next_len = strlen (next); break; default: case 'S': next_len = 0; break; case 'L': case 'l': if (! lang) { free (path); return NULL; } next = lang; next_len = strlen (next); break; case 't': case 'c': free (path); return NULL; } } else next = p, next_len = 1; /* Do we have room for this component followed by a '\0' ? */ if (path_len + next_len + 1 > path_size) { path_size = (path_len + next_len + 1) * 2; path = (char *) realloc (path, path_size); } bcopy (next, path + path_len, next_len); path_len += next_len; p++; /* If we've reached the end of the string, append ESCAPED_SUFFIX. */ if (p >= string + string_len && escaped_suffix) { string = escaped_suffix; string_len = strlen (string); p = string; escaped_suffix = NULL; } } /* Perhaps we should add the SUFFIX now. */ if (suffix) { int suffix_len = strlen (suffix); if (path_len + suffix_len + 1 > path_size) { path_size = (path_len + suffix_len + 1); path = (char *) realloc (path, path_size); } bcopy (suffix, path + path_len, suffix_len); path_len += suffix_len; } path[path_len] = '\0'; if (! file_p (path)) { free (path); return NULL; } return path; } static char * gethomedir () { struct passwd *pw; char *ptr; char *copy; if ((ptr = getenv ("HOME")) == NULL) { if ((ptr = getenv ("LOGNAME")) != NULL || (ptr = getenv ("USER")) != NULL) pw = getpwnam (ptr); else pw = getpwuid (getuid ()); if (pw) ptr = pw->pw_dir; } if (ptr == NULL) return "/"; copy = (char *) malloc (strlen (ptr) + 2); strcpy (copy, ptr); strcat (copy, "/"); return copy; } static int file_p (path) char *path; { struct stat status; return (access (path, 4) == 0 /* exists and is readable */ && stat (path, &status) == 0 /* get the status */ && (S_ISDIR (status.st_mode)) == 0); /* not a directory */ } /* Find the first element of SEARCH_PATH which exists and is readable, after expanding the %-escapes. Return 0 if we didn't find any, and the path name of the one we found otherwise. */ static char * search_magic_path (search_path, class, escaped_suffix, suffix) char *search_path, *class, *escaped_suffix, *suffix; { register char *s, *p; for (s = search_path; *s; s = p) { for (p = s; *p && *p != ':'; p++) ; if (p > s) { char *path = magic_file_p (s, p - s, class, escaped_suffix, suffix); if (path) return path; } else if (*p == ':') { char *path; s = "%N%S"; path = magic_file_p (s, strlen (s), class, escaped_suffix, suffix); if (path) return path; } if (*p == ':') p++; } return 0; } /* Producing databases for individual sources. */ static XrmDatabase get_system_app (class) char *class; { XrmDatabase db = NULL; char *path; path = getenv ("XFILESEARCHPATH"); if (! path) path = PATH_X_DEFAULTS; path = search_magic_path (path, class, 0, 0); if (path) { db = XrmGetFileDatabase (path); free (path); } return db; } static XrmDatabase get_fallback (display) Display *display; { return NULL; } static XrmDatabase get_user_app (class) char *class; { char *path; char *file = 0; char *free_it = 0; /* Check for XUSERFILESEARCHPATH. It is a path of complete file names, not directories. */ if (((path = getenv ("XUSERFILESEARCHPATH")) && (file = search_magic_path (path, class, 0, 0))) /* Check for APPLRESDIR; it is a path of directories. In each, we have to search for LANG/CLASS and then CLASS. */ || ((path = getenv ("XAPPLRESDIR")) && ((file = search_magic_path (path, class, "/%L/%N", 0)) || (file = search_magic_path (path, class, "/%N", 0)))) /* Check in the home directory. This is a bit of a hack; let's hope one's home directory doesn't contain any %-escapes. */ || (free_it = gethomedir (), ((file = search_magic_path (free_it, class, "%L/%N", 0)) || (file = search_magic_path (free_it, class, "%N", 0))))) { XrmDatabase db = XrmGetFileDatabase (file); free (file); if (free_it) free (free_it); return db; } if (free_it) free (free_it); return NULL; } static XrmDatabase get_user_db (display) Display *display; { XrmDatabase db; char *xdefs; #ifdef PBaseSize /* Cheap way to test for X11R4 or later. */ xdefs = XResourceManagerString (display); #else xdefs = display->xdefaults; #endif if (xdefs != NULL) db = XrmGetStringDatabase (xdefs); else { char *home; char *xdefault; home = gethomedir (); xdefault = (char *) malloc (strlen (home) + sizeof (".Xdefaults")); strcpy (xdefault, home); strcat (xdefault, ".Xdefaults"); db = XrmGetFileDatabase (xdefault); free (home); free (xdefault); } #ifdef HAVE_XSCREENRESOURCESTRING /* Get the screen-specific resources too. */ xdefs = XScreenResourceString (DefaultScreenOfDisplay (display)); if (xdefs != NULL) { XrmMergeDatabases (XrmGetStringDatabase (xdefs), &db); XFree (xdefs); } #endif return db; } static XrmDatabase get_environ_db () { XrmDatabase db; char *p; char *path = 0, *home = 0, *host; if ((p = getenv ("XENVIRONMENT")) == NULL) { home = gethomedir (); host = get_system_name (); path = (char *) malloc (strlen (home) + sizeof (".Xdefaults-") + strlen (host)); sprintf (path, "%s%s%s", home, ".Xdefaults-", host); p = path; } db = XrmGetFileDatabase (p); if (path) free (path); if (home) free (home); return db; } /* External interface. */ /* Types of values that we can find in a database */ #define XrmStringType "String" /* String representation */ XrmRepresentation x_rm_string; /* Quark representation */ /* Load X resources based on the display and a possible -xrm option. */ XrmDatabase x_load_resources (display, xrm_string, myname, myclass) Display *display; char *xrm_string, *myname, *myclass; { XrmDatabase user_database; XrmDatabase rdb; XrmDatabase db; char line[256]; char *helv = "-*-helvetica-medium-r-*--*-120-*-*-*-*-iso8859-1"; #ifdef USE_MOTIF char *courier = "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1"; extern Lisp_Object Vdouble_click_time; #endif x_rm_string = XrmStringToQuark (XrmStringType); #ifndef USE_X_TOOLKIT /* pmr@osf.org says this shouldn't be done if USE_X_TOOLKIT. I suspect it's because the toolkit version does this elsewhere. */ XrmInitialize (); #endif rdb = XrmGetStringDatabase (""); /* Add some font defaults. If the font `helv' doesn't exist, widgets will use some other default font. */ #ifdef USE_MOTIF sprintf (line, "%s.pane.background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fontList: %s", myclass, helv); XrmPutLineResource (&rdb, line); sprintf (line, "%s*menu*background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*menubar*background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*verticalScrollBar.background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*verticalScrollBar.troughColor: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s.dialog*.background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb.Text.background: white", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb.FilterText.background: white", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*DirList.background: white", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*ItemsList.background: white", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*background: grey75", myclass); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb.Text.fontList: %s", myclass, courier); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb.FilterText.fontList: %s", myclass, courier); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*ItemsList.fontList: %s", myclass, courier); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*DirList.fontList: %s", myclass, courier); XrmPutLineResource (&rdb, line); /* Set double click time of list boxes in the file selection dialog from `double-click-time'. */ if (INTEGERP (Vdouble_click_time) && XINT (Vdouble_click_time) > 0) { sprintf (line, "%s*fsb*DirList.doubleClickInterval: %d", myclass, XFASTINT (Vdouble_click_time)); XrmPutLineResource (&rdb, line); sprintf (line, "%s*fsb*ItemsList.doubleClickInterval: %d", myclass, XFASTINT (Vdouble_click_time)); XrmPutLineResource (&rdb, line); } #else /* not USE_MOTIF */ sprintf (line, "Emacs.dialog*.font: %s", helv); XrmPutLineResource (&rdb, line); sprintf (line, "Emacs.dialog*.background: grey75"); XrmPutLineResource (&rdb, line); sprintf (line, "*XlwMenu*font: %s", helv); XrmPutLineResource (&rdb, line); sprintf (line, "*XlwMenu*background: grey75"); XrmPutLineResource (&rdb, line); sprintf (line, "Emacs*verticalScrollBar.background: grey75"); XrmPutLineResource (&rdb, line); #endif /* not USE_MOTIF */ user_database = get_user_db (display); /* Figure out what the "customization string" is, so we can use it to decode paths. */ if (x_customization_string) free (x_customization_string); x_customization_string = x_get_customization_string (user_database, myname, myclass); /* Get application system defaults */ db = get_system_app (myclass); if (db != NULL) XrmMergeDatabases (db, &rdb); /* Get Fallback resources */ db = get_fallback (display); if (db != NULL) XrmMergeDatabases (db, &rdb); /* Get application user defaults */ db = get_user_app (myclass); if (db != NULL) XrmMergeDatabases (db, &rdb); /* get User defaults */ if (user_database != NULL) XrmMergeDatabases (user_database, &rdb); /* Get Environment defaults. */ db = get_environ_db (); if (db != NULL) XrmMergeDatabases (db, &rdb); /* Last, merge in any specification from the command line. */ if (xrm_string != NULL) { db = XrmGetStringDatabase (xrm_string); if (db != NULL) XrmMergeDatabases (db, &rdb); } return rdb; } /* Retrieve the value of the resource specified by NAME with class CLASS and of type TYPE from database RDB. The value is returned in RET_VALUE. */ int x_get_resource (rdb, name, class, expected_type, ret_value) XrmDatabase rdb; char *name, *class; XrmRepresentation expected_type; XrmValue *ret_value; { XrmValue value; XrmName namelist[100]; XrmClass classlist[100]; XrmRepresentation type; XrmStringToNameList(name, namelist); XrmStringToClassList(class, classlist); if (XrmQGetResource (rdb, namelist, classlist, &type, &value) == True && (type == expected_type)) { if (type == x_rm_string) ret_value->addr = (char *) value.addr; else bcopy (value.addr, ret_value->addr, ret_value->size); return value.size; } return 0; } /* Retrieve the string resource specified by NAME with CLASS from database RDB. */ char * x_get_string_resource (rdb, name, class) XrmDatabase rdb; char *name, *class; { XrmValue value; if (x_get_resource (rdb, name, class, x_rm_string, &value)) return (char *) value.addr; return (char *) 0; } /* Stand-alone test facilities. */ #ifdef TESTRM typedef char **List; #define arg_listify(len, list) (list) #define car(list) (*(list)) #define cdr(list) (list + 1) #define NIL(list) (! *(list)) #define free_arglist(list) static List member (elt, list) char *elt; List list; { List p; for (p = list; ! NIL (p); p = cdr (p)) if (! strcmp (elt, car (p))) return p; return p; } static void fatal (msg, prog, x1, x2, x3, x4, x5) char *msg, *prog; int x1, x2, x3, x4, x5; { extern int errno; if (errno) perror (prog); (void) fprintf (stderr, msg, prog, x1, x2, x3, x4, x5); exit (1); } main (argc, argv) int argc; char **argv; { Display *display; char *displayname, *resource_string, *class, *name; XrmDatabase xdb; List arg_list, lp; arg_list = arg_listify (argc, argv); lp = member ("-d", arg_list); if (!NIL (lp)) displayname = car (cdr (lp)); else displayname = "localhost:0.0"; lp = member ("-xrm", arg_list); if (! NIL (lp)) resource_string = car (cdr (lp)); else resource_string = (char *) 0; lp = member ("-c", arg_list); if (! NIL (lp)) class = car (cdr (lp)); else class = "Emacs"; lp = member ("-n", arg_list); if (! NIL (lp)) name = car (cdr (lp)); else name = "emacs"; free_arglist (arg_list); if (!(display = XOpenDisplay (displayname))) fatal ("Can't open display '%s'\n", XDisplayName (displayname)); xdb = x_load_resources (display, resource_string, name, class); /* In a real program, you'd want to also do this: */ display->db = xdb; while (1) { char query_name[90]; char query_class[90]; printf ("Name: "); gets (query_name); if (strlen (query_name)) { char *value; printf ("Class: "); gets (query_class); value = x_get_string_resource (xdb, query_name, query_class); if (value != NULL) printf ("\t%s(%s): %s\n\n", query_name, query_class, value); else printf ("\tNo Value.\n\n"); } else break; } printf ("\tExit.\n\n"); XCloseDisplay (display); } #endif /* TESTRM */