release/src/router/libncurses/test/dots.c

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  28
  29 /*
  30  * Author: Thomas E. Dickey <dickey@clark.net> 1999
  31  *
  32  * $Id: dots.c,v 1.25 2013/09/28 22:12:09 tom Exp $
  33  *
  34  * A simple demo of the terminfo interface.
  35  */
  36 #define USE_TINFO
  37 #include <test.priv.h>
  38
  39 #if HAVE_SETUPTERM
  40
  41 #include <time.h>
  42
  43 #define valid(s) ((s != 0) && s != (char *)-1)
  44
  45 static bool interrupted = FALSE;
  46 static long total_chars = 0;
  47 static time_t started;
  48
  49 static
  50 TPUTS_PROTO(outc, c)
  51 {
  52     int rc = c;
  53
  54     if (interrupted) {
  55         char tmp = (char) c;
  56         if (write(STDOUT_FILENO, &tmp, (size_t) 1) == -1)
  57             rc = EOF;
  58     } else {
  59         rc = putc(c, stdout);
  60     }
  61     TPUTS_RETURN(rc);
  62 }
  63
  64 static bool
  65 outs(const char *s)
  66 {
  67     if (valid(s)) {
  68         tputs(s, 1, outc);
  69         return TRUE;
  70     }
  71     return FALSE;
  72 }
  73
  74 static void
  75 cleanup(void)
  76 {
  77     outs(exit_attribute_mode);
  78     if (!outs(orig_colors))
  79         outs(orig_pair);
  80     outs(clear_screen);
  81     outs(cursor_normal);
  82
  83     printf("\n\n%ld total chars, rate %.2f/sec\n",
  84            total_chars,
  85            ((double) (total_chars) / (double) (time((time_t *) 0) - started)));
  86 }
  87
  88 static void
  89 onsig(int n GCC_UNUSED)
  90 {
  91     interrupted = TRUE;
  92 }
  93
  94 static double
  95 ranf(void)
  96 {
  97     long r = (rand() & 077777);
  98     return ((double) r / 32768.);
  99 }
 100
 101 int
 102 main(int argc GCC_UNUSED,
 103      char *argv[]GCC_UNUSED)
 104 {
 105     int x, y, z, p;
 106     double r;
 107     double c;
 108     int my_colors;
 109
 110     CATCHALL(onsig);
 111
 112     srand((unsigned) time(0));
 113     setupterm((char *) 0, 1, (int *) 0);
 114     outs(clear_screen);
 115     outs(cursor_invisible);
 116     my_colors = max_colors;
 117     if (my_colors > 1) {
 118         if (!valid(set_a_foreground)
 119             || !valid(set_a_background)
 120             || (!valid(orig_colors) && !valid(orig_pair)))
 121             my_colors = -1;
 122     }
 123
 124     r = (double) (lines - 4);
 125     c = (double) (columns - 4);
 126     started = time((time_t *) 0);
 127
 128     while (!interrupted) {
 129         x = (int) (c * ranf()) + 2;
 130         y = (int) (r * ranf()) + 2;
 131         p = (ranf() > 0.9) ? '*' : ' ';
 132
 133         tputs(tparm3(cursor_address, y, x), 1, outc);
 134         if (my_colors > 0) {
 135             z = (int) (ranf() * my_colors);
 136             if (ranf() > 0.01) {
 137                 tputs(tparm2(set_a_foreground, z), 1, outc);
 138             } else {
 139                 tputs(tparm2(set_a_background, z), 1, outc);
 140                 napms(1);
 141             }
 142         } else if (valid(exit_attribute_mode)
 143                    && valid(enter_reverse_mode)) {
 144             if (ranf() <= 0.01) {
 145                 outs((ranf() > 0.6)
 146                      ? enter_reverse_mode
 147                      : exit_attribute_mode);
 148                 napms(1);
 149             }
 150         }
 151         outc(p);
 152         fflush(stdout);
 153         ++total_chars;
 154     }
 155     cleanup();
 156     ExitProgram(EXIT_SUCCESS);
 157 }
 158 #else
 159 int
 160 main(int argc GCC_UNUSED,
 161      char *argv[]GCC_UNUSED)
 162 {
 163     fprintf(stderr, "This program requires terminfo\n");
 164     exit(EXIT_FAILURE);
 165 }
 166 #endif