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xkey.c
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C/C++ Source or Header
|
1992-03-15
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2KB
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142 lines
#include <stdio.h>
#include <ioctl.h>
#include <string.h>
#define MAXKEY 32
#ifndef TIOCGXKEY
#define TIOCGXKEY (('T'<< 8) | 13)
#define TIOCSXKEY (('T'<< 8) | 14)
#endif
struct xkey {
short xk_num;
char xk_def[8];
} xk;
char *kname[MAXKEY] = {
"f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10",
"F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10",
"up", "down", "right", "left", "help", "undo", "insert", "home",
"UP", "DOWN", "RIGHT", "LEFT"
};
char buf[80];
char *unescape(char *string)
{
char *u = buf;
char c;
while (c = *string++) {
if (c == '\\') {
c = *string++;
if (!c) break;
}
else if (c == '^') {
c = *string++;
if (!c) break;
else if (c == '?') c = 127;
else c &= 0x1f;
}
*u++ = c;
}
*u++ = 0;
return buf;
}
char *escape(char *string)
{
char *e, c;
e = buf;
while ( c = *string++ ) {
if (c < ' ' && c > 0) {
*e++ = '^';
c += '@';
}
else if (c == 127) {
*e++ = '^';
c = '?';
}
else if (c == '\\' || c == '^')
*e++ = '\\';
*e++ = c;
}
*e++ = 0;
return buf;
}
void
displaykeys()
{
int i, r;
int col = 0, maxcol;
char *e;
maxcol = 80; /* really should do ioctl to get this */
for (i = 0; i < MAXKEY; i++) {
xk.xk_num = i;
r = ioctl(0, TIOCGXKEY, &xk);
if (r) {
perror("ioctl");
exit(1);
}
e = escape(xk.xk_def);
col += (r = strlen(kname[i]) + strlen(e) + 2);
if (col >= maxcol) {
printf("\n");
col = r;
}
printf("%s %s ", kname[i], e);
}
printf("\n");
}
void
definekey(char *key, char *def)
{
int i;
for (i = 0; i < MAXKEY; i++)
if (!strcmp(kname[i], key)) break;
if (i >= MAXKEY) {
fprintf(stderr, "Unknown key: %s\n", key);
return;
}
strncpy(xk.xk_def, unescape(def), 7);
xk.xk_num = i;
xk.xk_def[7] = 0;
i = ioctl(0, TIOCSXKEY, &xk);
if (i) {
perror("ioctl");
}
}
int
main(int argc, char **argv)
{
char *progname;
char *key, *def;
progname = *argv++;
if (!isatty(0)) {
fprintf(stderr, "%s must be run on a terminal\n", progname);
return 1;
}
if (!*argv) {
displaykeys();
return 0;
}
while (*argv) {
key = *argv++;
def = *argv++;
if (!def) {
fprintf(stderr, "Usage: %s [key def]...\n", progname);
return 2;
}
definekey(key, def);
}
return 0;
}