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/* showfont.c - aeb, 940207 - updated 2001-02-06 */
/* renamed to showconsolefont.c to avoid clash with the X showfont */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/kd.h>
#include "nls.h"
#include "getfd.h"
#include "version.h"
#include "kdmapop.h"
#include "kdfontop.h"
#include "kbd_error.h"
#include "xmalloc.h"
/*
* Showing the font is nontrivial mostly because testing whether
* we are in utf8 mode cannot be done in an easy and clean way.
* So, we set up things here in such a way that it does not matter
* whether we are in utf8 mode.
*/
unsigned short obuf[E_TABSZ], nbuf[E_TABSZ];
struct unimapdesc ounimap, nunimap;
int fd = 0;
int have_obuf = 0;
int have_ounimap = 0;
static void __attribute__ ((noreturn))
leave(int n) {
if (have_obuf && loaduniscrnmap(fd,obuf)) {
kbd_warning(0, _("failed to restore original translation table\n"));
n = EXIT_FAILURE;
}
if (have_ounimap && loadunimap(fd,NULL,&ounimap)) {
kbd_warning(0, _("failed to restore original unimap\n"));
n = EXIT_FAILURE;
}
exit(n);
}
static void
settrivialscreenmap(void) {
int i;
if (getuniscrnmap(fd,obuf))
exit(1);
have_obuf = 1;
for(i=0; i<E_TABSZ; i++)
nbuf[i] = i;
if (loaduniscrnmap(fd,nbuf)) {
kbd_error(EXIT_FAILURE, 0, _("cannot change translation table\n"));
}
}
static void
getoldunicodemap(void) {
struct unimapdesc descr;
if (getunimap(fd, &descr))
leave(EXIT_FAILURE);
ounimap = descr;
have_ounimap = 1;
}
#define BASE 041 /* ' '+1 */
static void
setnewunicodemap(int *list, int cnt) {
int i;
if (!nunimap.entry_ct) {
nunimap.entry_ct = 512;
nunimap.entries = (struct unipair *) xmalloc(nunimap.entry_ct * sizeof(struct unipair));
}
for (i=0; i<512; i++) {
nunimap.entries[i].fontpos = i;
nunimap.entries[i].unicode = 0;
}
for (i=0; i<cnt; i++)
nunimap.entries[list[i]].unicode = BASE+i;
if (loadunimap(fd, NULL, &nunimap))
leave(EXIT_FAILURE);
}
static void __attribute__ ((noreturn))
usage(void) {
fprintf(stderr,
_("usage: showconsolefont -V|--version\n"
" showconsolefont [-C tty] [-v] [-i]\n"
"(probably after loading a font with `setfont font')\n"
"\n"
"Valid options are:\n"
" -C tty Device to read the font from. Default: current tty.\n"
" -v Be more verbose.\n"
" -i Don't print out the font table, just show\n"
" ROWSxCOLSxCOUNT and exit.\n"));
exit(EXIT_FAILURE);
}
int
main (int argc, char **argv) {
int c, n, cols, rows, nr, i, j, k;
int mode;
char *space, *sep, *console = NULL;
int list[64], lth, info = 0, verbose = 0;
set_progname(argv[0]);
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE_NAME, LOCALEDIR);
textdomain(PACKAGE_NAME);
if (argc == 2 &&
(!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")))
print_version_and_exit();
while ((c = getopt(argc, argv, "ivC:")) != EOF) {
switch (c) {
case 'i':
info = 1;
break;
case 'v':
verbose = 1;
break;
case 'C':
console = optarg;
break;
default:
usage();
}
}
if (optind != argc)
usage();
fd = getfd(console);
if (ioctl(fd, KDGKBMODE, &mode)) {
kbd_warning(errno, "ioctl KDGKBMODE");
leave(EXIT_FAILURE);
}
if (mode == K_UNICODE)
space = "\xef\x80\xa0"; /* U+F020 (direct-to-font space) */
else
space = " ";
if (info) {
nr = rows = cols = 0;
n = getfont(fd, NULL, &nr, &rows, &cols);
if (n != 0)
leave(EXIT_FAILURE);
if (verbose) {
printf(_("Character count: %d\n"), nr);
printf(_("Font width : %d\n"), rows);
printf(_("Font height : %d\n"), cols);
}
else
printf("%dx%dx%d\n", rows, cols, nr);
leave(EXIT_SUCCESS);
}
settrivialscreenmap();
getoldunicodemap();
n = getfontsize(fd);
if (verbose)
printf(_("Showing %d-char font\n\n"), n);
cols = ((n > 256) ? 32 : 16);
nr = 64/cols;
rows = (n+cols-1)/cols;
sep = ((cols == 16) ? "%1$s%1$s" : "%1$s");
for (i=0; i<rows; i++) {
if (i % nr == 0) {
lth = 0;
for (k=i; k<i+nr; k++)
for (j=0; j < cols; j++)
list[lth++] = k+j*rows;
setnewunicodemap(list, lth);
}
printf("%1$s%1$s%1$s%1$s", space);
for(j=0; j < cols && i+j*rows < n; j++) {
putchar(BASE + (i%nr)*cols+j);
printf(sep, space);
if (j%8 == 7)
printf(sep, space);
}
putchar('\n');
if (i%8 == 7)
putchar('\n');
fflush(stdout);
}
leave(EXIT_SUCCESS);
return EXIT_SUCCESS;
}
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