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/*
* Author: Thomas E. Dickey
*
* $Id: demo_termcap.c,v 1.23 2013/01/19 19:30:52 tom Exp $
*
* A simple demo of the termcap interface.
*/
#define USE_TINFO
#include <test.priv.h>
#if HAVE_TGETENT
#if defined(HAVE_CURSES_DATA_BOOLNAMES) || defined(DECL_CURSES_DATA_BOOLNAMES)
#define USE_CODE_LISTS 1
#else
#define USE_CODE_LISTS 0
#endif
#define FCOLS 8
#define FNAME(type) "%s %-*s = ", #type, FCOLS
#if USE_CODE_LISTS
static bool b_opt = FALSE;
static bool n_opt = FALSE;
static bool q_opt = FALSE;
static bool s_opt = FALSE;
#endif
static char *d_opt;
static char *e_opt;
static char **db_list;
static int db_item;
static long total_values;
#define isCapName(c) (isgraph(c) && strchr("^#=:\\", c) == 0)
#if NO_LEAKS && USE_CODE_LISTS
#define MYSCR struct _myscr
MYSCR {
MYSCR *next;
TERMINAL *term;
};
static MYSCR *my_screens;
static void
save_screen(void)
{
MYSCR *obj = malloc(sizeof(MYSCR));
obj->next = my_screens;
obj->term = cur_term;
my_screens = obj;
}
#else
#define save_screen() /* nothing */
#endif
static char *
make_dbitem(char *p, char *q)
{
char *result = malloc(strlen(e_opt) + 2 + (size_t) (p - q));
sprintf(result, "%s=%.*s", e_opt, (int) (p - q), q);
return result;
}
static void
make_dblist(void)
{
if (d_opt && e_opt) {
int pass;
for (pass = 0; pass < 2; ++pass) {
char *p, *q;
size_t count = 0;
for (p = q = d_opt; *p != '\0'; ++p) {
if (*p == ':') {
if (p != q + 1) {
if (pass) {
db_list[count] = make_dbitem(p, q);
}
count++;
}
q = p + 1;
}
}
if (p != q + 1) {
if (pass) {
db_list[count] = make_dbitem(p, q);
}
count++;
}
if (!pass) {
db_list = typeCalloc(char *, count + 1);
}
}
}
}
static char *
next_dbitem(void)
{
char *result = 0;
if (db_list) {
if ((result = db_list[db_item]) == 0) {
db_item = 0;
result = db_list[0];
} else {
db_item++;
}
}
printf("** %s\n", result);
return result;
}
static void
free_dblist(void)
{
if (db_list) {
int n;
for (n = 0; db_list[n]; ++n)
free(db_list[n]);
free(db_list);
db_list = 0;
}
}
static void
dumpit(NCURSES_CONST char *cap)
{
/*
* One of the limitations of the termcap interface is that the library
* cannot determine the size of the buffer passed via tgetstr(), nor the
* amount of space remaining. This demo simply reuses the whole buffer
* for each call; a normal termcap application would try to use the buffer
* to hold all of the strings extracted from the terminal entry.
*/
char area[1024], *ap = area;
char *str;
int num;
if ((str = tgetstr(cap, &ap)) != 0) {
total_values++;
if (!q_opt) {
/*
* Note that the strings returned are mostly terminfo format, since
* ncurses does not convert except for a handful of special cases.
*/
printf(FNAME(str), cap);
while (*str != 0) {
int ch = UChar(*str++);
switch (ch) {
case '\177':
fputs("^?", stdout);
break;
case '\033':
fputs("\\E", stdout);
break;
case '\b':
fputs("\\b", stdout);
break;
case '\f':
fputs("\\f", stdout);
break;
case '\n':
fputs("\\n", stdout);
break;
case '\r':
fputs("\\r", stdout);
break;
case ' ':
fputs("\\s", stdout);
break;
case '\t':
fputs("\\t", stdout);
break;
case '^':
fputs("\\^", stdout);
break;
case ':':
fputs("\\072", stdout);
break;
case '\\':
fputs("\\\\", stdout);
break;
default:
if (isgraph(ch))
fputc(ch, stdout);
else if (ch < 32)
printf("^%c", ch + '@');
else
printf("\\%03o", ch);
break;
}
}
printf("\n");
}
} else if ((num = tgetnum(cap)) >= 0) {
total_values++;
if (!q_opt) {
printf(FNAME(num), cap);
printf(" %d\n", num);
}
} else if (tgetflag(cap) > 0) {
++total_values;
if (!q_opt) {
printf(FNAME(flg), cap);
printf("%s\n", "true");
}
}
if (!q_opt)
fflush(stdout);
}
static void
brute_force(const char *name)
{
char buffer[1024];
if (db_list) {
putenv(next_dbitem());
}
printf("Terminal type %s\n", name);
if (tgetent(buffer, name) >= 0) {
char cap[3];
int c1, c2;
cap[2] = 0;
for (c1 = 0; c1 < 256; ++c1) {
cap[0] = (char) c1;
if (isCapName(c1)) {
for (c2 = 0; c2 < 256; ++c2) {
cap[1] = (char) c2;
if (isCapName(c2)) {
dumpit(cap);
}
}
}
}
}
}
#if USE_CODE_LISTS
static void
demo_termcap(NCURSES_CONST char *name)
{
unsigned n;
NCURSES_CONST char *cap;
if (db_list) {
putenv(next_dbitem());
}
printf("Terminal type \"%s\"\n", name);
#if HAVE_SETUPTERM
setupterm(name, 1, (int *) 0);
#else
setterm(name);
#endif
save_screen();
if (b_opt) {
for (n = 0;; ++n) {
cap = boolcodes[n];
if (cap == 0)
break;
dumpit(cap);
}
}
if (n_opt) {
for (n = 0;; ++n) {
cap = numcodes[n];
if (cap == 0)
break;
dumpit(cap);
}
}
if (s_opt) {
for (n = 0;; ++n) {
cap = strcodes[n];
if (cap == 0)
break;
dumpit(cap);
}
}
}
static void
usage(void)
{
static const char *msg[] =
{
"Usage: demo_termcap [options] [terminal]",
"",
"If no options are given, print all (boolean, numeric, string)",
"capabilities for the given terminal, using short names.",
"",
"Options:",
" -a try all names, print capabilities found",
" -b print boolean-capabilities",
" -d LIST colon-separated list of databases to use",
" -e NAME environment variable to set with -d option",
" -n print numeric-capabilities",
" -q quiet (prints only counts)",
" -r COUNT repeat for given count",
" -s print string-capabilities",
#ifdef NCURSES_VERSION
" -y disable extended capabilities",
#endif
};
unsigned n;
for (n = 0; n < SIZEOF(msg); ++n) {
fprintf(stderr, "%s\n", msg[n]);
}
ExitProgram(EXIT_FAILURE);
}
#endif
int
main(int argc, char *argv[])
{
int n;
char *name;
bool a_opt = FALSE;
#if USE_CODE_LISTS
int repeat;
int r_opt = 1;
while ((n = getopt(argc, argv, "abd:e:nqr:sy")) != -1) {
switch (n) {
case 'a':
a_opt = TRUE;
break;
case 'b':
b_opt = TRUE;
break;
case 'd':
d_opt = optarg;
break;
case 'e':
e_opt = optarg;
break;
case 'n':
n_opt = TRUE;
break;
case 'q':
q_opt = TRUE;
break;
case 'r':
if ((r_opt = atoi(optarg)) <= 0)
usage();
break;
case 's':
s_opt = TRUE;
break;
#ifdef NCURSES_VERSION
case 'y':
use_extended_names(FALSE);
break;
#endif
default:
usage();
break;
}
}
if (!(b_opt || n_opt || s_opt)) {
b_opt = TRUE;
n_opt = TRUE;
s_opt = TRUE;
}
#else
a_opt = TRUE;
#endif
make_dblist();
if (a_opt) {
if (optind < argc) {
for (n = optind; n < argc; ++n) {
brute_force(argv[n]);
}
} else if ((name = getenv("TERM")) != 0) {
brute_force(name);
} else {
static char dumb[] = "dumb";
brute_force(dumb);
}
}
#if USE_CODE_LISTS
else {
for (repeat = 0; repeat < r_opt; ++repeat) {
if (optind < argc) {
for (n = optind; n < argc; ++n) {
demo_termcap(argv[n]);
}
} else if ((name = getenv("TERM")) != 0) {
demo_termcap(name);
} else {
static char dumb[] = "dumb";
demo_termcap(dumb);
}
}
#if NO_LEAKS
/*
* ncurses' tgetent() interface caches some entries and its no-leaks
* code discards those. The calls to setupterm() on the other hand
* are not cached, and each call allocates a chunk of memory, even
* if the same terminal type is requested repeatedly.
*/
while (my_screens != 0) {
MYSCR *next = my_screens->next;
del_curterm(my_screens->term);
free(my_screens);
my_screens = next;
}
#endif
}
#endif /* USE_CODE_LISTS */
printf("%ld values\n", total_values);
free_dblist();
ExitProgram(EXIT_SUCCESS);
}
#else
int
main(int argc GCC_UNUSED,
char *argv[]GCC_UNUSED)
{
printf("This program requires termcap\n");
ExitProgram(EXIT_FAILURE);
}
#endif