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/* xscreensaver, Copyright (c) 1992, 1997, 1998
* Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
/* 1999-Nov-21 Modified by Jim Knoble <jmknoble@jmknoble.cx>.
* Modifications:
*
* - Made get_boolean_resource() accept a third parameter, default_value,
* which determines the result of get_boolean_resource if either (a)
* no such resource exists, or (b) the resource value does not conform
* to the syntax of a boolean resource.
*
* - Same for get_integer_resource(), get_pixel_resource().
*
* - 1999-Dec-24 Moved header includes from utils.h to here.
* Trimmed unused functions.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <X11/Xlib.h>
#include <X11/Xos.h>
#include <X11/Xresource.h>
#include "resources.h"
/* Resource functions. Assumes: */
extern char *progname;
extern char *progclass;
extern XrmDatabase db;
#ifndef isupper
# define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#endif
#ifndef _tolower
# define _tolower(c) ((c) - 'A' + 'a')
#endif
char *
get_string_resource (char *res_name, char *res_class)
{
XrmValue value;
char *type;
char full_name [1024], full_class [1024];
int result;
result = snprintf(full_name, sizeof(full_name), "%s.%s",
progname, res_name);
if (result == -1 || result >= sizeof(full_name)) {
fprintf(stderr, "%s: resource name too long: %s.%s\n", progname,
progname, res_name);
return 0;
}
result = snprintf(full_class, sizeof(full_class), "%s.%s",
progclass, res_class);
if (result == -1 || result >= sizeof(full_class)) {
fprintf(stderr, "%s: resource name too long: %s.%s\n", progname,
progclass, res_class);
return 0;
}
if (XrmGetResource (db, full_name, full_class, &type, &value))
{
char *str = (char *) malloc (value.size + 1);
strncpy (str, (char *) value.addr, value.size);
str [value.size] = 0;
return str;
}
return 0;
}
Bool
get_boolean_resource (char *res_name, char *res_class, Bool default_value)
{
char *tmp, buf [100];
char *s = get_string_resource (res_name, res_class);
char *os = s;
if (! s) return default_value;
for (tmp = buf; *s; s++)
*tmp++ = isupper (*s) ? _tolower (*s) : *s;
*tmp = 0;
free (os);
while (*buf &&
(buf[strlen(buf)-1] == ' ' ||
buf[strlen(buf)-1] == '\t'))
buf[strlen(buf)-1] = 0;
if (!strcmp (buf, "on") || !strcmp (buf, "true") || !strcmp (buf, "yes"))
return 1;
if (!strcmp (buf,"off") || !strcmp (buf, "false") || !strcmp (buf,"no"))
return 0;
fprintf (stderr, "%s: %s must be boolean, not %s.\n",
progname, res_name, buf);
return default_value;
}
int
get_integer_resource (char *res_name, char *res_class, int default_value)
{
int val;
char c, *s = get_string_resource (res_name, res_class);
char *ss = s;
if (!s) return default_value;
while (*ss && *ss <= ' ') ss++; /* skip whitespace */
if (ss[0] == '0' && (ss[1] == 'x' || ss[1] == 'X')) /* 0x: parse as hex */
{
if (1 == sscanf (ss+2, "%x %c", &val, &c))
{
free (s);
return val;
}
}
else /* else parse as dec */
{
if (1 == sscanf (ss, "%d %c", &val, &c))
{
free (s);
return val;
}
}
fprintf (stderr, "%s: %s must be an integer, not %s.\n",
progname, res_name, s);
free (s);
return default_value;
}
double
get_float_resource (char *res_name, char *res_class)
{
double val;
char c, *s = get_string_resource (res_name, res_class);
if (! s) return 0.0;
if (1 == sscanf (s, " %lf %c", &val, &c))
{
free (s);
return val;
}
fprintf (stderr, "%s: %s must be a float, not %s.\n",
progname, res_name, s);
free (s);
return 0.0;
}
unsigned int
get_pixel_resource (char *res_name, char *res_class,
Display *dpy, Colormap cmap, unsigned int default_value)
{
XColor color;
char *s = get_string_resource (res_name, res_class);
char *s2;
if (!s) goto DEFAULT;
for (s2 = s + strlen(s) - 1; s2 > s; s2--)
if (*s2 == ' ' || *s2 == '\t')
*s2 = 0;
else
break;
if (! XParseColor (dpy, cmap, s, &color))
{
fprintf (stderr, "%s: can't parse color %s\n", progname, s);
goto DEFAULT;
}
if (! XAllocColor (dpy, cmap, &color))
{
fprintf (stderr, "%s: couldn't allocate color %s\n", progname, s);
goto DEFAULT;
}
free (s);
return color.pixel;
DEFAULT:
if (s) free (s);
return default_value;
}
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