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[Emacs-diffs] Changes to emacs/src/xrdb.c [lexbind]
From: |
Miles Bader |
Subject: |
[Emacs-diffs] Changes to emacs/src/xrdb.c [lexbind] |
Date: |
Tue, 14 Oct 2003 19:23:34 -0400 |
Index: emacs/src/xrdb.c
diff -c /dev/null emacs/src/xrdb.c:1.48.2.1
*** /dev/null Tue Oct 14 19:23:34 2003
--- emacs/src/xrdb.c Tue Oct 14 19:22:51 2003
***************
*** 0 ****
--- 1,817 ----
+ /* 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 <config.h>
+ #endif
+
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
+
+ #include <epaths.h>
+
+ #include <stdio.h>
+
+ #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 <X11/Xlib.h>
+ #include <X11/Xatom.h>
+ #if 0
+ #include <X11/Xos.h>
+ #endif
+ #include <X11/X.h>
+ #include <X11/Xutil.h>
+ #include <X11/Xresource.h>
+ #ifdef VMS
+ #include "vms-pwd.h"
+ #else
+ #include <pwd.h>
+ #endif
+ #include <sys/stat.h>
+
+ #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 (filename)
+ char *filename;
+ {
+ struct stat status;
+
+ return (access (filename, 4) == 0 /* exists and is readable */
+ && stat (filename, &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
+ /* address@hidden 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 */
+
+ /* arch-tag: 37e6fbab-ed05-4363-9e76-6c4109ed511f
+ (do not change this comment) */
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- [Emacs-diffs] Changes to emacs/src/xrdb.c [lexbind],
Miles Bader <=