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keymap tool: support scancode/keycode pair arguments 

This avoids having to create and parse an entire keymap file for cases where
just one or two keys have to be remapped.
This commit is contained in:
Martin Pitt 2009-07-18 14:52:45 +02:00
parent b02c9fa19b
commit d03a6f20df
1 changed files with 51 additions and 5 deletions
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56
extras/keymap/keymap.c
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@ -153,6 +153,34 @@ fail:
return r;
}
static void set_key(int fd, const char* scancode_str, const char* keyname)
{
unsigned scancode;
char *endptr;
char t[105] = "KEY_UNKNOWN";
const struct key *k;
scancode = (unsigned) strtol(scancode_str, &endptr, 0);
if (*endptr != '\0') {
fprintf(stderr, "ERROR: Invalid scancode\n");
exit(1);
}
snprintf(t, sizeof(t), "KEY_%s", keyname);
if (!(k = lookup_key(t, strlen(t)))) {
fprintf(stderr, "ERROR: Unknown key name '%s'\n", keyname);
exit(1);
}
if (evdev_set_keycode(fd, scancode, k->id) < 0)
fprintf(stderr, "setting scancode 0x%2X to key code %i failed\n",
scancode, k->id);
else
printf("setting scancode 0x%2X to key code %i\n",
scancode, k->id);
}
static int merge_table(int fd, const char *filename) {
int r = 0;
int line = 0;
@ -275,6 +303,7 @@ static void interactive(int fd)
static void help(int error)
{
const char* h = "Usage: keymap <event device> [<map file>]\n"
" keymap <event device> scancode keyname [...]\n"
" keymap -i <event device>\n";
if (error) {
fputs(h, stderr);
@ -294,6 +323,7 @@ int main(int argc, char **argv)
};
int fd = -1;
int opt_interactive = 0;
int i;
while (1) {
int option;
@ -314,19 +344,35 @@ int main(int argc, char **argv)
}
}
if (argc < optind+1 || argc > optind+2)
if (argc < optind+1)
help (1);
if ((fd = evdev_open(argv[optind])) < 0)
return 3;
if (argc == optind+2)
merge_table(fd, default_keymap_path(argv[optind+1]));
else {
/* one argument (device): dump or interactive */
if (argc == optind+1) {
if (opt_interactive)
interactive(fd);
else
dump_table(fd);
return 0;
}
return 0;
/* two arguments (device, mapfile): set map file */
if (argc == optind+2) {
merge_table(fd, default_keymap_path(argv[optind+1]));
return 0;
}
/* more arguments (device, scancode/keyname pairs): set keys directly */
if ((argc - optind - 1) % 2 == 0) {
for (i = optind+1; i < argc; i += 2)
set_key(fd, argv[i], argv[i+1]);
return 0;
}
/* invalid number of arguments */
help(1);
return 1; /* not reached */
}