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authorGravatar Eric Andersen <andersen@codepoet.org>1999-10-19 06:02:44 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>1999-10-19 06:02:44 +0000
commit3e0fbae15eca940c70075c8eade3f2c735fa34b6 (patch)
tree4ce22d21a451f695eaf1ea8ef446438414984ef3 /console-tools
parentabc7d597cb78a0ee3e92ecaeb73f6cbb2a3412bf (diff)
downloadbusybox-3e0fbae15eca940c70075c8eade3f2c735fa34b6.tar.gz
busybox-3e0fbae15eca940c70075c8eade3f2c735fa34b6.tar.bz2
fixes grep, added loadfont from debian bootfloppies.
-Erik
Diffstat (limited to 'console-tools')
-rw-r--r--console-tools/loadfont.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/console-tools/loadfont.c b/console-tools/loadfont.c
new file mode 100644
index 000000000..a10fa8a69
--- /dev/null
+++ b/console-tools/loadfont.c
@@ -0,0 +1,234 @@
+/*
+ * loadfont.c - Eugene Crosser & Andries Brouwer
+ *
+ * Version 0.96bb
+ *
+ * Loads the console font, and possibly the corresponding screen map(s).
+ * (Adapted for busybox by Matej Vela.)
+ */
+#include "internal.h"
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <memory.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/kd.h>
+#include <endian.h>
+
+#define PSF_MAGIC1 0x36
+#define PSF_MAGIC2 0x04
+
+#define PSF_MODE512 0x01
+#define PSF_MODEHASTAB 0x02
+#define PSF_MAXMODE 0x03
+#define PSF_SEPARATOR 0xFFFF
+
+static const char loadfont_usage[] = "loadfont\n"
+"\n"
+"\tLoad a console font from standard input.\n"
+"\n";
+
+struct psf_header
+{
+ unsigned char magic1, magic2; /* Magic number */
+ unsigned char mode; /* PSF font mode */
+ unsigned char charsize; /* Character size */
+};
+
+#define PSF_MAGIC_OK(x) ((x).magic1 == PSF_MAGIC1 && (x).magic2 == PSF_MAGIC2)
+
+static void loadnewfont(int fd);
+
+extern int
+loadfont_main(int argc, char **argv)
+{
+ int fd;
+
+ fd = open("/dev/tty0", O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
+ return 1;
+ }
+ loadnewfont(fd);
+
+ return 0;
+}
+
+static void
+do_loadfont(int fd, char *inbuf, int unit, int fontsize) {
+ char buf[16384];
+ int i;
+
+ memset(buf,0,sizeof(buf));
+
+ if (unit < 1 || unit > 32) {
+ fprintf(stderr, "Bad character size %d\n", unit);
+ exit(1);
+ }
+
+ for (i = 0; i < fontsize; i++)
+ memcpy(buf+(32*i), inbuf+(unit*i), unit);
+
+#if defined( PIO_FONTX ) && !defined( sparc )
+ {
+ struct consolefontdesc cfd;
+
+ cfd.charcount = fontsize;
+ cfd.charheight = unit;
+ cfd.chardata = buf;
+
+ if (ioctl(fd, PIO_FONTX, &cfd) == 0)
+ return; /* success */
+ perror("PIO_FONTX ioctl error (trying PIO_FONT)");
+ }
+#endif
+ if (ioctl(fd, PIO_FONT, buf)) {
+ perror("PIO_FONT ioctl error");
+ exit(1);
+ }
+}
+
+static void
+do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize) {
+ struct unimapinit advice;
+ struct unimapdesc ud;
+ struct unipair *up;
+ int ct = 0, maxct;
+ int glyph;
+ u_short unicode;
+
+ maxct = tailsz; /* more than enough */
+ up = (struct unipair *) malloc(maxct * sizeof(struct unipair));
+ if (!up) {
+ fprintf(stderr, "Out of memory?\n");
+ exit(1);
+ }
+ for (glyph = 0; glyph < fontsize; glyph++) {
+ while (tailsz >= 2) {
+ unicode = (((u_short) inbuf[1]) << 8) + inbuf[0];
+ tailsz -= 2;
+ inbuf += 2;
+ if (unicode == PSF_SEPARATOR)
+ break;
+ up[ct].unicode = unicode;
+ up[ct].fontpos = glyph;
+ ct++;
+ }
+ }
+
+ /* Note: after PIO_UNIMAPCLR and before PIO_UNIMAP
+ this printf did not work on many kernels */
+
+ advice.advised_hashsize = 0;
+ advice.advised_hashstep = 0;
+ advice.advised_hashlevel = 0;
+ if(ioctl(fd, PIO_UNIMAPCLR, &advice)) {
+#ifdef ENOIOCTLCMD
+ if (errno == ENOIOCTLCMD) {
+ fprintf(stderr, "It seems this kernel is older than 1.1.92\n");
+ fprintf(stderr, "No Unicode mapping table loaded.\n");
+ } else
+#endif
+ perror("PIO_UNIMAPCLR");
+ exit(1);
+ }
+ ud.entry_ct = ct;
+ ud.entries = up;
+ if(ioctl(fd, PIO_UNIMAP, &ud)) {
+#if 0
+ if (errno == ENOMEM) {
+ /* change advice parameters */
+ }
+#endif
+ perror("PIO_UNIMAP");
+ exit(1);
+ }
+}
+
+static void
+loadnewfont(int fd) {
+ int unit;
+ char inbuf[32768]; /* primitive */
+ int inputlth, offset;
+
+ /*
+ * We used to look at the length of the input file
+ * with stat(); now that we accept compressed files,
+ * just read the entire file.
+ */
+ inputlth = fread(inbuf, 1, sizeof(inbuf), stdin);
+ if (ferror(stdin)) {
+ perror("Error reading input font");
+ exit(1);
+ }
+ /* use malloc/realloc in case of giant files;
+ maybe these do not occur: 16kB for the font,
+ and 16kB for the map leaves 32 unicode values
+ for each font position */
+ if (!feof(stdin)) {
+ perror("Font too large");
+ exit(1);
+ }
+
+ /* test for psf first */
+ {
+ struct psf_header psfhdr;
+ int fontsize;
+ int hastable;
+ int head0, head;
+
+ if (inputlth < sizeof(struct psf_header))
+ goto no_psf;
+
+ psfhdr = * (struct psf_header *) &inbuf[0];
+
+ if (!PSF_MAGIC_OK(psfhdr))
+ goto no_psf;
+
+ if (psfhdr.mode > PSF_MAXMODE) {
+ fprintf(stderr, "Unsupported psf file mode\n");
+ exit(1);
+ }
+ fontsize = ((psfhdr.mode & PSF_MODE512) ? 512 : 256);
+#if !defined( PIO_FONTX ) || defined( sparc )
+ if (fontsize != 256) {
+ fprintf(stderr, "Only fontsize 256 supported\n");
+ exit(1);
+ }
+#endif
+ hastable = (psfhdr.mode & PSF_MODEHASTAB);
+ unit = psfhdr.charsize;
+ head0 = sizeof(struct psf_header);
+ head = head0 + fontsize*unit;
+ if (head > inputlth || (!hastable && head != inputlth)) {
+ fprintf(stderr, "Input file: bad length\n");
+ exit(1);
+ }
+ do_loadfont(fd, inbuf + head0, unit, fontsize);
+ if (hastable)
+ do_loadtable(fd, inbuf + head, inputlth-head, fontsize);
+ return;
+ }
+ no_psf:
+
+ /* file with three code pages? */
+ if (inputlth == 9780) {
+ offset = 40;
+ unit = 16;
+ } else {
+ /* bare font */
+ if (inputlth & 0377) {
+ fprintf(stderr, "Bad input file size\n");
+ exit(1);
+ }
+ offset = 0;
+ unit = inputlth/256;
+ }
+ do_loadfont(fd, inbuf+offset, unit, 256);
+}