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30 * Author: Thomas E. Dickey
32 * $Id: demo_termcap.c,v 1.17 2012/03/01 01:09:30 tom Exp $
34 * A simple demo of the termcap interface.
37 #include <test.priv.h>
41 #if defined(HAVE_CURSES_DATA_BOOLNAMES) || defined(DECL_CURSES_DATA_BOOLNAMES)
42 #define USE_CODE_LISTS 1
44 #define USE_CODE_LISTS 0
48 #define FNAME(type) "%s %-*s = ", #type, FCOLS
51 static bool b_opt = FALSE;
52 static bool n_opt = FALSE;
53 static bool s_opt = FALSE;
56 #define isCapName(c) (isgraph(c) && strchr("^#=:\\", c) == 0)
58 #if NO_LEAKS && USE_CODE_LISTS
60 #define MYSCR struct _myscr
66 static MYSCR *my_screens;
71 MYSCR *obj = malloc(sizeof(MYSCR));
72 obj->next = my_screens;
77 #define save_screen() /* nothing */
81 dumpit(NCURSES_CONST char *cap)
84 * One of the limitations of the termcap interface is that the library
85 * cannot determine the size of the buffer passed via tgetstr(), nor the
86 * amount of space remaining. This demo simply reuses the whole buffer
87 * for each call; a normal termcap application would try to use the buffer
88 * to hold all of the strings extracted from the terminal entry.
90 char area[1024], *ap = area;
94 if ((str = tgetstr(cap, &ap)) != 0) {
96 * Note that the strings returned are mostly terminfo format, since
97 * ncurses does not convert except for a handful of special cases.
99 printf(FNAME(str), cap);
101 int ch = UChar(*str++);
107 fputs("\\E", stdout);
110 fputs("\\b", stdout);
113 fputs("\\f", stdout);
116 fputs("\\n", stdout);
119 fputs("\\r", stdout);
122 fputs("\\s", stdout);
125 fputs("\\t", stdout);
128 fputs("\\^", stdout);
131 fputs("\\072", stdout);
134 fputs("\\\\", stdout);
140 printf("^%c", ch + '@');
142 printf("\\%03o", ch);
147 } else if ((num = tgetnum(cap)) >= 0) {
148 printf(FNAME(num), cap);
149 printf(" %d\n", num);
150 } else if (tgetflag(cap) > 0) {
151 printf(FNAME(flg), cap);
152 printf("%s\n", "true");
158 brute_force(const char *name)
162 printf("Terminal type %s\n", name);
163 if (tgetent(buffer, name) >= 0) {
168 for (c1 = 0; c1 < 256; ++c1) {
171 for (c2 = 0; c2 < 256; ++c2) {
184 demo_termcap(NCURSES_CONST char *name)
187 NCURSES_CONST char *cap;
189 printf("Terminal type \"%s\"\n", name);
191 setupterm(name, 1, (int *) 0);
228 static const char *msg[] =
230 "Usage: demo_termcap [options] [terminal]",
232 "If no options are given, print all (boolean, numeric, string)",
233 "capabilities for the given terminal, using short names.",
236 " -a try all names, print capabilities found",
237 " -b print boolean-capabilities",
238 " -n print numeric-capabilities",
239 " -r COUNT repeat for given count",
240 " -s print string-capabilities",
243 for (n = 0; n < SIZEOF(msg); ++n) {
244 fprintf(stderr, "%s\n", msg[n]);
246 ExitProgram(EXIT_FAILURE);
251 main(int argc, char *argv[])
261 while ((n = getopt(argc, argv, "abnr:s")) != -1) {
273 if ((r_opt = atoi(optarg)) <= 0)
285 if (!(b_opt || n_opt || s_opt)) {
296 for (n = optind; n < argc; ++n) {
297 brute_force(argv[n]);
299 } else if ((name = getenv("TERM")) != 0) {
302 static char dumb[] = "dumb";
308 for (repeat = 0; repeat < r_opt; ++repeat) {
310 for (n = optind; n < argc; ++n) {
311 demo_termcap(argv[n]);
313 } else if ((name = getenv("TERM")) != 0) {
316 static char dumb[] = "dumb";
322 * ncurses' tgetent() interface caches some entries and its no-leaks
323 * code discards those. The calls to setupterm() on the other hand
324 * are not cached, and each call allocates a chunk of memory, even
325 * if the same terminal type is requested repeatedly.
327 while (my_screens != 0) {
328 MYSCR *next = my_screens->next;
329 del_curterm(my_screens->term);
335 #endif /* USE_CODE_LISTS */
337 ExitProgram(EXIT_SUCCESS);
342 main(int argc GCC_UNUSED,
343 char *argv[]GCC_UNUSED)
345 printf("This program requires termcap\n");