uisimulator/x11/resources.c

   1 /* xscreensaver, Copyright (c) 1992, 1997, 1998
   2  *  Jamie Zawinski <jwz@jwz.org>
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation.  No representations are made about the suitability of this
   9  * software for any purpose.  It is provided "as is" without express or
  10  * implied warranty.
  11  */
  12
  13 #include "utils.h"
  14 #include "resources.h"
  15 #include <X11/Xresource.h>
  16
  17
  18 /* Resource functions.  Assumes: */
  19
  20 extern char *progname;
  21 extern char *progclass;
  22 extern XrmDatabase db;
  23
  24 static unsigned int get_time_resource (char *res_name, char *res_class,
  25                                        Bool sec_p);
  26
  27 #ifndef isupper
  28 # define isupper(c)  ((c) >= 'A' && (c) <= 'Z')
  29 #endif
  30 #ifndef _tolower
  31 # define _tolower(c)  ((c) - 'A' + 'a')
  32 #endif
  33
  34 char *
  35 get_string_resource (char *res_name, char *res_class)
  36 {
  37   XrmValue value;
  38   char  *type;
  39   char full_name [1024], full_class [1024];
  40   strcpy (full_name, progname);
  41   strcat (full_name, ".");
  42   strcat (full_name, res_name);
  43   strcpy (full_class, progclass);
  44   strcat (full_class, ".");
  45   strcat (full_class, res_class);
  46   if (XrmGetResource (db, full_name, full_class, &type, &value))
  47     {
  48       char *str = (char *) malloc (value.size + 1);
  49       strncpy (str, (char *) value.addr, value.size);
  50       str [value.size] = 0;
  51       return str;
  52     }
  53   return 0;
  54 }
  55
  56 Bool
  57 get_boolean_resource (char *res_name, char *res_class)
  58 {
  59   char *tmp, buf [100];
  60   char *s = get_string_resource (res_name, res_class);
  61   char *os = s;
  62   if (! s) return 0;
  63   for (tmp = buf; *s; s++)
  64     *tmp++ = isupper (*s) ? _tolower (*s) : *s;
  65   *tmp = 0;
  66   free (os);
  67
  68   while (*buf &&
  69          (buf[strlen(buf)-1] == ' ' ||
  70           buf[strlen(buf)-1] == '\t'))
  71     buf[strlen(buf)-1] = 0;
  72
  73   if (!strcmp (buf, "on") || !strcmp (buf, "true") || !strcmp (buf, "yes"))
  74     return 1;
  75   if (!strcmp (buf,"off") || !strcmp (buf, "false") || !strcmp (buf,"no"))
  76     return 0;
  77   fprintf (stderr, "%s: %s must be boolean, not %s.\n",
  78            progname, res_name, buf);
  79   return 0;
  80 }
  81
  82 int
  83 get_integer_resource (char *res_name, char *res_class)
  84 {
  85   int val;
  86   char c, *s = get_string_resource (res_name, res_class);
  87   char *ss = s;
  88   if (!s) return 0;
  89
  90   while (*ss && *ss <= ' ') ss++;                       /* skip whitespace */
  91
  92   if (ss[0] == '0' && (ss[1] == 'x' || ss[1] == 'X'))   /* 0x: parse as hex */
  93     {
  94       if (1 == sscanf (ss+2, "%x %c", &val, &c))
  95         {
  96           free (s);
  97           return val;
  98         }
  99     }
 100   else                                                  /* else parse as dec */
 101     {
 102       if (1 == sscanf (ss, "%d %c", &val, &c))
 103         {
 104           free (s);
 105           return val;
 106         }
 107     }
 108
 109   fprintf (stderr, "%s: %s must be an integer, not %s.\n",
 110            progname, res_name, s);
 111   free (s);
 112   return 0;
 113 }
 114
 115 double
 116 get_float_resource (char *res_name, char *res_class)
 117 {
 118   double val;
 119   char c, *s = get_string_resource (res_name, res_class);
 120   if (! s) return 0.0;
 121   if (1 == sscanf (s, " %lf %c", &val, &c))
 122     {
 123       free (s);
 124       return val;
 125     }
 126   fprintf (stderr, "%s: %s must be a float, not %s.\n",
 127            progname, res_name, s);
 128   free (s);
 129   return 0.0;
 130 }
 131
 132
 133 unsigned int
 134 get_pixel_resource (char *res_name, char *res_class,
 135                     Display *dpy, Colormap cmap)
 136 {
 137   XColor color;
 138   char *s = get_string_resource (res_name, res_class);
 139   char *s2;
 140   if (!s) goto DEFAULT;
 141
 142   for (s2 = s + strlen(s) - 1; s2 > s; s2--)
 143     if (*s2 == ' ' || *s2 == '\t')
 144       *s2 = 0;
 145     else
 146       break;
 147
 148   if (! XParseColor (dpy, cmap, s, &color))
 149     {
 150       fprintf (stderr, "%s: can't parse color %s\n", progname, s);
 151       goto DEFAULT;
 152     }
 153   if (! XAllocColor (dpy, cmap, &color))
 154     {
 155       fprintf (stderr, "%s: couldn't allocate color %s\n", progname, s);
 156       goto DEFAULT;
 157     }
 158   free (s);
 159   return color.pixel;
 160  DEFAULT:
 161   if (s) free (s);
 162   return ((strlen(res_class) >= 10 &&
 163            !strcmp ("Background", res_class + strlen(res_class) - 10))
 164           ? BlackPixel (dpy, DefaultScreen (dpy))
 165           : WhitePixel (dpy, DefaultScreen (dpy)));
 166 }
 167
 168
 169 int
 170 parse_time (const char *string, Bool seconds_default_p, Bool silent_p)
 171 {
 172   unsigned int h, m, s;
 173   char c;
 174   if (3 == sscanf (string,   " %u : %2u : %2u %c", &h, &m, &s, &c))
 175     ;
 176   else if (2 == sscanf (string, " : %2u : %2u %c", &m, &s, &c) ||
 177            2 == sscanf (string,    " %u : %2u %c", &m, &s, &c))
 178     h = 0;
 179   else if (1 == sscanf (string,       " : %2u %c", &s, &c))
 180     h = m = 0;
 181   else if (1 == sscanf (string,          " %u %c",
 182                         (seconds_default_p ? &s : &m), &c))
 183     {
 184       h = 0;
 185       if (seconds_default_p) m = 0;
 186       else s = 0;
 187     }
 188   else
 189     {
 190       if (! silent_p)
 191         fprintf (stderr, "%s: invalid time interval specification \"%s\".\n",
 192                  progname, string);
 193       return -1;
 194     }
 195   if (s >= 60 && (h != 0 || m != 0))
 196     {
 197       if (! silent_p)
 198         fprintf (stderr, "%s: seconds > 59 in \"%s\".\n", progname, string);
 199       return -1;
 200     }
 201   if (m >= 60 && h > 0)
 202     {
 203       if (! silent_p)
 204         fprintf (stderr, "%s: minutes > 59 in \"%s\".\n", progname, string);
 205       return -1;
 206     }
 207   return ((h * 60 * 60) + (m * 60) + s);
 208 }
 209
 210 static unsigned int
 211 get_time_resource (char *res_name, char *res_class, Bool sec_p)
 212 {
 213   int val;
 214   char *s = get_string_resource (res_name, res_class);
 215   if (!s) return 0;
 216   val = parse_time (s, sec_p, False);
 217   free (s);
 218   return (val < 0 ? 0 : val);
 219 }
 220
 221 unsigned int
 222 get_seconds_resource (char *res_name, char *res_class)
 223 {
 224   return get_time_resource (res_name, res_class, True);
 225 }
 226
 227 unsigned int
 228 get_minutes_resource (char *res_name, char *res_class)
 229 {
 230   return get_time_resource (res_name, res_class, False);
 231 }