1 /****************************************************************************
2 * Copyright 2019-2022,2023 Thomas E. Dickey *
3 * Copyright 1999-2013,2017 Free Software Foundation, Inc. *
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14 * in all copies or substantial portions of the Software. *
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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28 ****************************************************************************/
29
30 /*
31 * Author: Thomas E. Dickey <dickey@clark.net> 1999
32 *
33 * $Id: dots.c,v 1.45 2023/01/07 17:21:48 tom Exp $
34 *
35 * A simple demo of the terminfo interface.
36 */
37 #define USE_TINFO
38 #include <test.priv.h>
39
40 #if HAVE_SETUPTERM
41
42 #include <time.h>
43
44 static bool interrupted = FALSE;
45 static long total_chars = 0;
46 static time_t started;
47
48 static
TPUTS_PROTO(outc,c)49 TPUTS_PROTO(outc, c)
50 {
51 int rc = c;
52
53 if (interrupted) {
54 char tmp = (char) c;
55 if (write(STDOUT_FILENO, &tmp, (size_t) 1) == -1)
56 rc = EOF;
57 } else {
58 rc = putc(c, stdout);
59 }
60 TPUTS_RETURN(rc);
61 }
62
63 static bool
outs(const char * s)64 outs(const char *s)
65 {
66 if (VALID_STRING(s)) {
67 tputs(s, 1, outc);
68 return TRUE;
69 }
70 return FALSE;
71 }
72
73 static void
cleanup(void)74 cleanup(void)
75 {
76 outs(exit_attribute_mode);
77 if (!outs(orig_colors))
78 outs(orig_pair);
79 outs(clear_screen);
80 outs(cursor_normal);
81
82 fflush(stdout);
83 fprintf(stderr, "\n\n%ld total cells, rate %.2f/sec\n",
84 total_chars,
85 ((double) (total_chars) / (double) (time((time_t *) 0) - started)));
86 }
87
88 static void
onsig(int n GCC_UNUSED)89 onsig(int n GCC_UNUSED)
90 {
91 interrupted = TRUE;
92 }
93
94 static double
ranf(void)95 ranf(void)
96 {
97 long r = (rand() & 077777);
98 return ((double) r / 32768.);
99 }
100
101 static int
get_number(NCURSES_CONST char * cap,int map)102 get_number(NCURSES_CONST char *cap, int map)
103 {
104 int result = map;
105 if (cap != 0) {
106 int check = tigetnum(cap);
107 if (check > 0)
108 result = check;
109 }
110 return result;
111 }
112
113 static void
usage(int ok)114 usage(int ok)
115 {
116 static const char *msg[] =
117 {
118 "Usage: dots [options]"
119 ,""
120 ,USAGE_COMMON
121 ,"Options:"
122 ," -T TERM override $TERM"
123 #if HAVE_USE_ENV
124 ," -e allow environment $LINES / $COLUMNS"
125 #endif
126 ," -f use tigetnum rather than <term.h> mapping"
127 ," -m SIZE set margin (default: 2)"
128 ," -r SECS self-interrupt/exit after specified number of seconds"
129 ," -s MSECS delay 1% of the time (default: 1 msecs)"
130 };
131 size_t n;
132
133 for (n = 0; n < SIZEOF(msg); n++)
134 fprintf(stderr, "%s\n", msg[n]);
135
136 ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE);
137 }
138 /* *INDENT-OFF* */
VERSION_COMMON()139 VERSION_COMMON()
140 /* *INDENT-ON* */
141
142 int
143 main(int argc, char *argv[])
144 {
145 int ch;
146 double r;
147 double c;
148 int my_colors;
149 int f_option = 0;
150 int m_option = 2;
151 int r_option = 0;
152 int s_option = 1;
153 size_t need;
154 char *my_env;
155
156 while ((ch = getopt(argc, argv, OPTS_COMMON "T:efm:r:s:")) != -1) {
157 switch (ch) {
158 case 'T':
159 need = 6 + strlen(optarg);
160 if ((my_env = malloc(need)) != NULL) {
161 _nc_SPRINTF(my_env, _nc_SLIMIT(need) "TERM=%s", optarg);
162 putenv(my_env);
163 }
164 break;
165 #if HAVE_USE_ENV
166 case 'e':
167 use_env(TRUE);
168 break;
169 #endif
170 case 'f':
171 f_option = 1;
172 break;
173 case 'm':
174 m_option = atoi(optarg);
175 break;
176 case 'r':
177 r_option = atoi(optarg);
178 break;
179 case 's':
180 s_option = atoi(optarg);
181 break;
182 case OPTS_VERSION:
183 show_version(argv);
184 ExitProgram(EXIT_SUCCESS);
185 default:
186 usage(ch == OPTS_USAGE);
187 /* NOTREACHED */
188 }
189 }
190
191 SetupAlarm(r_option);
192 InitAndCatch(setupterm((char *) 0, 1, (int *) 0), onsig);
193
194 srand((unsigned) time(0));
195
196 outs(clear_screen);
197 outs(cursor_invisible);
198
199 #define GetNumber(ln,sn) get_number(f_option ? #sn : 0, ln)
200 my_colors = GetNumber(max_colors, colors);
201 if (my_colors > 1) {
202 if (!VALID_STRING(set_a_foreground)
203 || !VALID_STRING(set_a_background)
204 || (!VALID_STRING(orig_colors) && !VALID_STRING(orig_pair)))
205 my_colors = -1;
206 }
207
208 r = (double) (GetNumber(lines, lines) - (m_option * 2));
209 c = (double) (GetNumber(columns, cols) - (m_option * 2));
210 started = time((time_t *) 0);
211
212 while (!interrupted) {
213 int x = (int) (c * ranf()) + m_option;
214 int y = (int) (r * ranf()) + m_option;
215 int p = (ranf() > 0.9) ? '*' : ' ';
216
217 tputs(tparm3(cursor_address, y, x), 1, outc);
218 if (my_colors > 0) {
219 int z = (int) (ranf() * my_colors);
220 if (ranf() > 0.01) {
221 tputs(tparm2(set_a_foreground, z), 1, outc);
222 } else {
223 tputs(tparm2(set_a_background, z), 1, outc);
224 if (s_option)
225 napms(s_option);
226 }
227 } else if (VALID_STRING(exit_attribute_mode)
228 && VALID_STRING(enter_reverse_mode)) {
229 if (ranf() <= 0.01) {
230 outs((ranf() > 0.6)
231 ? enter_reverse_mode
232 : exit_attribute_mode);
233 if (s_option)
234 napms(s_option);
235 }
236 }
237 outc(p);
238 fflush(stdout);
239 ++total_chars;
240 }
241 cleanup();
242 ExitProgram(EXIT_SUCCESS);
243 }
244 #else
245 int
main(void)246 main(void)
247 {
248 fprintf(stderr, "This program requires terminfo\n");
249 exit(EXIT_FAILURE);
250 }
251 #endif
252