91 lines
1.5 KiB
C
Executable file
91 lines
1.5 KiB
C
Executable file
/* loadkeys - load national keyboard map Author: Marcus Hampel
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <minix/keymap.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#if __minix_vmd
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#define KBD_DEVICE "/dev/kbd"
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#else
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#define KBD_DEVICE "/dev/console"
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#endif
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u16_t keymap[NR_SCAN_CODES * MAP_COLS];
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u8_t comprmap[4 + NR_SCAN_CODES * MAP_COLS * 9/8 * 2 + 1];
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void tell(char *s)
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{
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write(2, s, strlen(s));
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}
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void fatal(char *say)
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{
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int err = errno;
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tell("loadkeys: ");
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if (say != NULL) {
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tell(say);
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tell(": ");
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}
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tell(strerror(err));
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tell("\n");
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exit(1);
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}
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void usage(void)
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{
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tell("Usage: loadkeys mapfile\n");
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exit(1);
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}
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int main(int argc, char *argv[])
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{
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u8_t *cm;
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u16_t *km;
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int fd, n, fb;
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if (argc != 2)
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usage();
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if ((fd = open(argv[1], O_RDONLY)) < 0) fatal(argv[1]);
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if (read(fd, comprmap, sizeof(comprmap)) < 0) fatal(argv[1]);
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if (memcmp(comprmap, KEY_MAGIC, 4) != 0) {
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tell("loadkeys: ");
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tell(argv[1]);
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tell(": not a keymap file\n");
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exit(1);
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}
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close(fd);
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/* Decompress the keymap data. */
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cm = comprmap + 4;
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n = 8;
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for (km = keymap; km < keymap + NR_SCAN_CODES * MAP_COLS; km++) {
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if (n == 8) {
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/* Need a new flag byte. */
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fb = *cm++;
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n = 0;
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}
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*km = *cm++; /* Low byte. */
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if (fb & (1 << n)) {
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*km |= (*cm++ << 8); /* One of the few special keys. */
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}
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n++;
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}
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if ((fd = open(KBD_DEVICE, O_WRONLY)) < 0) fatal(KBD_DEVICE);
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if (ioctl(fd, KIOCSMAP, keymap) < 0) fatal(KBD_DEVICE);
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return 0;
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}
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