xdefaults.c

rxvt经典的linux下的终端.小巧实用

# endif				/* KEYSYM_RESOURCE */

# ifndef USE_XGETDEFAULT
/*{{{ rxvt_get_xdefaults() */
/*
 * the matching algorithm used for memory-save fake resources
 */
/* INTPROTO */
void
rxvt_get_xdefaults(rxvt_t *r, FILE *stream, const char *name)
{
    unsigned int    len;
    char           *str, buffer[256];

    if (stream == NULL)
	return;
    len = STRLEN(name);
    while ((str = fgets(buffer, sizeof(buffer), stream)) != NULL) {
	unsigned int    entry, n;

	while (*str && isspace(*str))
	    str++;		/* leading whitespace */

	if ((str[len] != '*' && str[len] != '.')
	    || (len && STRNCMP(str, name, len)))
	    continue;
	str += (len + 1);	/* skip `name*' or `name.' */

# ifdef KEYSYM_RESOURCE
	if (!rxvt_parse_keysym(r, str, NULL))
# endif				/* KEYSYM_RESOURCE */
	    for (entry = 0; entry < optList_size(); entry++) {
		const char     *kw = optList[entry].kw;

		if (kw == NULL)
		    continue;
		n = STRLEN(kw);
		if (str[n] == ':' && rxvt_Str_match(str, kw)) {
		    /* skip `keyword:' */
		    str += (n + 1);
		    rxvt_Str_trim(str);
		    n = STRLEN(str);
		    if (n && r->h->rs[optList[entry].doff] == NULL) {
			/* not already set */
			int             s;
			char           *p = rxvt_malloc((n + 1) * sizeof(char));

			STRCPY(p, str);
			r->h->rs[optList[entry].doff] = p;
			if (optList_isBool(entry)) {
			    s = STRCASECMP(str, "TRUE") == 0
				|| STRCASECMP(str, "YES") == 0
				|| STRCASECMP(str, "ON") == 0
				|| STRCASECMP(str, "1") == 0;
			    if (optList_isReverse(entry))
				s = !s;
			    if (s)
				r->Options |= (optList[entry].flag);
			    else
				r->Options &= ~(optList[entry].flag);
			}
		    }
		    break;
		}
	    }
    }
    rewind(stream);
}

/*}}} */
# endif				/* ! USE_XGETDEFAULT */
#endif				/* NO_RESOURCES */

/*{{{ read the resources files */
/*
 * using XGetDefault() or the hand-rolled replacement
 */
/* ARGSUSED */
/* EXTPROTO */
void
rxvt_extract_resources(rxvt_t *r, Display *display __attribute__((unused)), const char *name)
{
#ifndef NO_RESOURCES

# if defined XAPPLOADDIR
#  if defined(HAVE_XSETLOCALE) || defined(HAVE_SETLOCALE)
    /* Compute the path of the possibly available localized Rxvt file */ 
    char           *localepath = NULL;

    if (r->h->locale != NULL) {	/* XXX: must limit length of string */
	localepath = rxvt_malloc(256); 
	sprintf(localepath, XAPPLOADDIRLOCALE "/" APL_SUBCLASS,
		(int)(258 - sizeof(XAPPLOADDIRLOCALE) - sizeof(APL_SUBCLASS)),
		r->h->locale);	/* 258 = 255 + 4 (-.*s) - 1 (/) */
    }

    {
#  endif
# endif

# ifdef USE_XGETDEFAULT
/*
 * get resources using the X library function
 */
    int             entry;

#  ifdef XrmEnumOneLevel
    int             i;
    char           *displayResource, *xe;
    XrmName         name_prefix[3];
    XrmClass        class_prefix[3];
    XrmDatabase     database, rdb1;
    char            fname[1024];

    XrmInitialize();
    database = NULL;

/* Get any Xserver defaults */

    displayResource = XResourceManagerString(display);
    if (displayResource != NULL)
	database = XrmGetStringDatabase(displayResource);

#   ifdef HAVE_EXTRA_XRESOURCE_FILES
/* Add in ~/.Xdefaults or ~/.Xresources */
    {
	char           *ptr;

	if ((ptr = (char *)getenv("HOME")) == NULL)
	    ptr = ".";

	for (i = 0; i < (sizeof(xnames) / sizeof(xnames[0])); i++) {
	    sprintf(fname, "%-.*s/%s", sizeof(fname) - STRLEN(xnames[i]) - 2,
		    ptr, xnames[i]);
	    if ((rdb1 = XrmGetFileDatabase(fname)) != NULL) {
		XrmMergeDatabases(rdb1, &database);
#    ifndef HAVE_BOTH_XRESOURCE_FILES
		break;
#    endif
	    }
	}
    }
#   endif

/* Add in XENVIRONMENT file */

    if ((xe = (char *)getenv("XENVIRONMENT")) != NULL
	&& (rdb1 = XrmGetFileDatabase(xe)) != NULL)
	XrmMergeDatabases(rdb1, &database);

/* Add in Rxvt file */
#   if defined(HAVE_XSETLOCALE) || defined(HAVE_SETLOCALE)
    if (localepath == NULL || (rdb1 = XrmGetFileDatabase(localepath)) == NULL)
#   endif
    rdb1 = XrmGetFileDatabase(XAPPLOADDIR "/" APL_SUBCLASS);
    if (rdb1 != NULL)
        XrmMergeDatabases(rdb1, &database);

/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
    if ((xe = (char *)getenv("XAPPLRESDIR")) != NULL) {
	sprintf(fname, "%-.*s/" APL_SUBCLASS, sizeof(fname)
		- sizeof(APL_SUBCLASS) - 2, xe);
	if ((rdb1 = XrmGetFileDatabase(fname)) != NULL)
	    XrmMergeDatabases(rdb1, &database);
    }

    XrmSetDatabase(display, database);
#  endif

/*
 * Query resources for options that affect us
 */
    for (entry = 0; entry < optList_size(); entry++) {
	int             s;
	char           *p, *p0;
	const char     *kw = optList[entry].kw;

	if (kw == NULL || r->h->rs[optList[entry].doff] != NULL)
	    continue;		/* previously set */

	p = XGetDefault(display, name, kw);
	p0 = XGetDefault(display, "!INVALIDPROGRAMMENAMEDONTMATCH!", kw);
	if (p == NULL || (p0 && STRCMP(p, p0) == 0)) {
	    p = XGetDefault(display, APL_SUBCLASS, kw);
	    if (p == NULL || (p0 && STRCMP(p, p0) == 0))
		p = XGetDefault(display, APL_CLASS, kw);
	}
	if (p == NULL && p0)
	    p = p0;
	if (p) {
	    r->h->rs[optList[entry].doff] = p;

	    if (optList_isBool(entry)) {
		s = STRCASECMP(p, "TRUE") == 0
		    || STRCASECMP(p, "YES") == 0
		    || STRCASECMP(p, "ON") == 0
		    || STRCASECMP(p, "1") == 0;
		if (optList_isReverse(entry))
		    s = !s;
		if (s)
		    r->Options |= (optList[entry].flag);
		else
		    r->Options &= ~(optList[entry].flag);
	    }
	}
    }

/*
 * [R5 or later]: enumerate the resource database
 */
#  ifdef XrmEnumOneLevel
#   ifdef KEYSYM_RESOURCE
    name_prefix[0] = XrmStringToName(name);
    name_prefix[1] = XrmStringToName("keysym");
    name_prefix[2] = NULLQUARK;
    class_prefix[0] = XrmStringToName(APL_SUBCLASS);
    class_prefix[1] = XrmStringToName("Keysym");
    class_prefix[2] = NULLQUARK;
/* XXX: Need to check sizeof(rxvt_t) == sizeof(XPointer) */
    XrmEnumerateDatabase(XrmGetDatabase(display), name_prefix, class_prefix,
			 XrmEnumOneLevel, rxvt_define_key, NULL);
    name_prefix[0] = XrmStringToName(APL_CLASS);
    name_prefix[1] = XrmStringToName("keysym");
    class_prefix[0] = XrmStringToName(APL_CLASS);
    class_prefix[1] = XrmStringToName("Keysym");
/* XXX: Need to check sizeof(rxvt_t) == sizeof(XPointer) */
    XrmEnumerateDatabase(XrmGetDatabase(display), name_prefix, class_prefix,
			 XrmEnumOneLevel, rxvt_define_key, NULL);
#   endif
#  endif

# else				/* USE_XGETDEFAULT */
/* get resources the hard way, but save lots of memory */
    FILE           *fd = NULL;
    char           *home;

    if ((home = getenv("HOME")) != NULL) {
	unsigned int    i, len = STRLEN(home) + 2;
	char           *f = NULL;

	for (i = 0; i < (sizeof(xnames) / sizeof(xnames[0])); i++) {
	    f = rxvt_realloc(f, (len + STRLEN(xnames[i])) * sizeof(char));

	    sprintf(f, "%s/%s", home, xnames[i]);

	    if ((fd = fopen(f, "r")) != NULL)
		break;
	}
	free(f);
    }
/*
 * The normal order to match resources is the following:
 * @ global resources (partial match, ~/.Xdefaults)
 * @ application file resources (XAPPLOADDIR/Rxvt)
 * @ class resources (~/.Xdefaults)
 * @ private resources (~/.Xdefaults)
 *
 * However, for the hand-rolled resources, the matching algorithm
 * checks if a resource string value has already been allocated
 * and won't overwrite it with (in this case) a less specific
 * resource value.
 *
 * This avoids multiple allocation.  Also, when we've called this
 * routine command-line string options have already been applied so we
 * needn't to allocate for those resources.
 *
 * So, search in resources from most to least specific.
 *
 * Also, use a special sub-class so that we can use either or both of
 * "XTerm" and "Rxvt" as class names.
 */

    rxvt_get_xdefaults(r, fd, name);
    rxvt_get_xdefaults(r, fd, APL_SUBCLASS);

#  if defined(XAPPLOADDIR) && defined(USE_XAPPLOADDIR)
    {
	FILE           *ad = NULL;

#   if defined(HAVE_XSETLOCALE) || defined(HAVE_SETLOCALE)
	if (localepath == NULL || (ad = fopen(localepath, "r")) == NULL)
#   endif
	ad = fopen(XAPPLOADDIR "/" APL_SUBCLASS, "r");
	if (ad != NULL) {
	    rxvt_get_xdefaults(r, ad, APL_SUBCLASS);
	    rxvt_get_xdefaults(r, ad, "");
	    fclose(ad);
	}
    }
#  endif			/* XAPPLOADDIR */

    rxvt_get_xdefaults(r, fd, APL_CLASS);
    rxvt_get_xdefaults(r, fd, "");	/* partial match */
    if (fd != NULL)
	fclose(fd);
# endif				/* USE_XGETDEFAULT */

# if defined XAPPLOADDIR
#  if defined(HAVE_XSETLOCALE) || defined(HAVE_SETLOCALE)
    }

    /* Free the path of the possibly available localized Rxvt file */ 
    free(localepath);
#  endif
# endif

#endif				/* NO_RESOURCES */

/*
 * even without resources, at least do this setup for command-line
 * options and command-line long options
 */
#ifdef MULTICHAR_SET
    rxvt_set_multichar_encoding(r, r->h->rs[Rs_multichar_encoding]);
#endif
#ifdef GREEK_SUPPORT
/* this could be a function in grkelot.c */
/* void set_greek_keyboard (const char * str); */
    if (r->h->rs[Rs_greek_keyboard]) {
	if (!STRCMP(r->h->rs[Rs_greek_keyboard], "iso"))
	    greek_setmode(GREEK_ELOT928);	/* former -grk9 */
	else if (!STRCMP(r->h->rs[Rs_greek_keyboard], "ibm"))
	    greek_setmode(GREEK_IBM437);	/* former -grk4 */
    }
    {
	KeySym          sym;

	if (r->h->rs[Rs_greektoggle_key]
	    && ((sym = XStringToKeysym(r->h->rs[Rs_greektoggle_key])) != 0))
	    r->h->ks_greekmodeswith = sym;
    }
#endif				/* GREEK_SUPPORT */

#if defined (HOTKEY_CTRL) || defined (HOTKEY_META)
    {
	KeySym          sym;

	if (r->h->rs[Rs_bigfont_key]
	    && ((sym = XStringToKeysym(r->h->rs[Rs_bigfont_key])) != 0))
	    r->h->ks_bigfont = sym;
	if (r->h->rs[Rs_smallfont_key]
	    && ((sym = XStringToKeysym(r->h->rs[Rs_smallfont_key])) != 0))
	    r->h->ks_smallfont = sym;
    }
#endif
}

/*}}} */
/*----------------------- end-of-file (C source) -----------------------*/