78 lines
1.4 KiB
C
78 lines
1.4 KiB
C
/* genmap - output binary keymap Author: Marcus Hampel
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*/
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#include <sys/types.h>
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#ifdef __minix
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#include <minix/keymap.h>
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#else
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#include "../../../include/minix/keymap.h"
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#endif
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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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/*
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* if we crosscompile those might not be defined,
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*/
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#ifndef u16_t
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#include <stdint.h>
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typedef uint16_t u16_t;
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#endif
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#ifndef u8_t
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#include <stdint.h>
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typedef uint8_t u8_t;
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#endif
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u16_t keymap[NR_SCAN_CODES * MAP_COLS] = {
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#include KEYSRC
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};
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u8_t comprmap[4 + NR_SCAN_CODES * MAP_COLS * 9/8 * 2 + 1];
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void tell(const char *s)
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{
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write(2, s, strlen(s));
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}
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int main(void)
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{
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u8_t *cm, *fb;
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u16_t *km;
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int n;
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/* Compress the keymap. */
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memcpy(comprmap, KEY_MAGIC, 4);
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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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/* Allocate a new flag byte. */
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fb = cm;
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*cm++ = 0;
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n= 0;
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}
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*cm++ = (*km & 0x00FF); /* Low byte. */
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if (*km & 0xFF00) {
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*cm++ = (*km >> 8); /* High byte only when set. */
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*fb |= (1 << n); /* Set a flag if so. */
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}
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n++;
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}
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/* Don't store trailing zeros. */
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while (cm > comprmap && cm[-1] == 0) cm--;
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/* Emit the compressed keymap. */
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if (write(1, comprmap, cm - comprmap) < 0) {
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int err = errno;
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tell("genmap: ");
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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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exit(0);
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}
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