442 lines
9.9 KiB
C
442 lines
9.9 KiB
C
/*
|
|
* Derived from
|
|
* mapscrn.c - version 0.92
|
|
*
|
|
* Was taken from console-tools and adapted by
|
|
* Peter Novodvorsky <petya@logic.ru>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <memory.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/kd.h>
|
|
|
|
typedef unsigned short unicode;
|
|
|
|
static long int ctoi(unsigned char *s, int *is_unicode);
|
|
int old_screen_map_read_ascii(FILE *fp, unsigned char buf[]);
|
|
int uni_screen_map_read_ascii(FILE *fp, unicode buf[], int* is_unicode);
|
|
unicode utf8_to_ucs2 (char* buf);
|
|
int screen_map_load(int fd, FILE *fp);
|
|
|
|
int loadacm_main(int argc, char **argv)
|
|
{
|
|
int fd;
|
|
|
|
fd = open("/dev/tty", O_RDWR);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Error opening /dev/tty1: %s\n", strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
if (screen_map_load(fd, stdin))
|
|
{
|
|
fprintf(stderr, "Error loading acm: %s\n", strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
write(fd, "\033(K", 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int screen_map_load(int fd, FILE *fp)
|
|
{
|
|
struct stat stbuf;
|
|
unicode wbuf[E_TABSZ];
|
|
unsigned char buf[E_TABSZ];
|
|
int parse_failed = 0;
|
|
int is_unicode;
|
|
|
|
if (fstat(fp->_fileno, &stbuf))
|
|
perror("Cannot stat map file"), exit(1);
|
|
|
|
/* first try a UTF screen-map: either ASCII (no restriction) or binary (regular file) */
|
|
if (!(parse_failed = (-1 == uni_screen_map_read_ascii(fp,wbuf,&is_unicode))) ||
|
|
(S_ISREG(stbuf.st_mode) &&
|
|
(stbuf.st_size == (sizeof(unicode) * E_TABSZ)))) /* test for binary UTF map by size */
|
|
{
|
|
if (parse_failed)
|
|
{
|
|
if (-1 == fseek (fp, 0, SEEK_SET))
|
|
{
|
|
if (errno == ESPIPE)
|
|
fprintf (stderr, "16bit screen-map MUST be a regular file.\n"), exit (1);
|
|
else
|
|
perror ("fseek failed reading binary 16bit screen-map"), exit (1);
|
|
}
|
|
|
|
if (fread(wbuf, sizeof(unicode) * E_TABSZ, 1, fp) != 1)
|
|
perror("Cannot read [new] map from file"), exit(1);
|
|
#if 0
|
|
else
|
|
fprintf(stderr, "Input screen-map is binary.\n");
|
|
#endif
|
|
}
|
|
|
|
/* if it was effectively a 16-bit ASCII, OK, else try to read as 8-bit map */
|
|
/* same if it was binary, ie. if parse_failed */
|
|
if (parse_failed || is_unicode)
|
|
{
|
|
if (ioctl(fd,PIO_UNISCRNMAP,wbuf))
|
|
perror("PIO_UNISCRNMAP ioctl"), exit(1);
|
|
else
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* rewind... */
|
|
if (-1 == fseek (fp, 0, SEEK_SET))
|
|
{
|
|
if (errno == ESPIPE)
|
|
fprintf (stderr, "Assuming 8bit screen-map - MUST be a regular file.\n"), exit (1);
|
|
else
|
|
perror ("fseek failed assuming 8bit screen-map"), exit (1);
|
|
}
|
|
|
|
/* ... and try an old 8-bit screen-map */
|
|
if (!(parse_failed = (-1 == old_screen_map_read_ascii(fp,buf))) ||
|
|
(S_ISREG(stbuf.st_mode) &&
|
|
(stbuf.st_size == E_TABSZ))) /* test for binary old 8-bit map by size */
|
|
{
|
|
if (parse_failed)
|
|
{
|
|
if (-1 == fseek (fp, 0, SEEK_SET))
|
|
{
|
|
if (errno == ESPIPE)
|
|
/* should not - it succedeed above */
|
|
fprintf (stderr, "fseek() returned ESPIPE !\n"), exit (1);
|
|
else
|
|
perror ("fseek for binary 8bit screen-map"), exit (1);
|
|
}
|
|
|
|
if (fread(buf,E_TABSZ,1,fp) != 1)
|
|
perror("Cannot read [old] map from file"), exit(1);
|
|
#if 0
|
|
else
|
|
fprintf(stderr, "Input screen-map is binary.\n");
|
|
#endif
|
|
}
|
|
|
|
if (ioctl(fd,PIO_SCRNMAP,buf))
|
|
perror("PIO_SCRNMAP ioctl"), exit(1);
|
|
else
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "Error parsing symbolic map\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* - reads `fp' as a 16-bit ASCII SFM file.
|
|
* - returns -1 on error.
|
|
* - returns it in `unicode' in an E_TABSZ-elements array.
|
|
* - sets `*is_unicode' flagiff there were any non-8-bit
|
|
* (ie. real 16-bit) mapping.
|
|
*
|
|
* FIXME: ignores everything after second word
|
|
*/
|
|
int uni_screen_map_read_ascii(FILE *fp, unicode buf[], int *is_unicode)
|
|
{
|
|
char buffer[256]; /* line buffer reading file */
|
|
char *p, *q; /* 1st + 2nd words in line */
|
|
int in, on; /* the same, as numbers */
|
|
int tmp_is_unicode; /* tmp for is_unicode calculation */
|
|
int i; /* loop index - result holder */
|
|
int ret_code = 0; /* return code */
|
|
sigset_t sigset, old_sigset;
|
|
|
|
assert (is_unicode);
|
|
|
|
*is_unicode = 0;
|
|
|
|
/* first 128 codes defaults to ASCII */
|
|
for (i=0; i<128; i++) buf[i] = i;
|
|
/* remaining defaults to replacement char (usually E_TABSZ = 256) */
|
|
for ( ; i<E_TABSZ; i++) buf[i] = 0xfffd;
|
|
|
|
/* block SIGCHLD */
|
|
sigemptyset (&sigset);
|
|
sigaddset (&sigset, SIGCHLD);
|
|
sigprocmask (SIG_BLOCK, &sigset, &old_sigset);
|
|
|
|
do
|
|
{
|
|
if (NULL == fgets(buffer, sizeof(buffer),fp))
|
|
{
|
|
if (feof (fp))
|
|
break;
|
|
else
|
|
{
|
|
perror ("uni_screen_map_read_ascii() can't read line");
|
|
exit (2);
|
|
}
|
|
}
|
|
|
|
/* get "charset-relative charcode", stripping leading spaces */
|
|
p = strtok(buffer," \t\n");
|
|
|
|
/* skip empty lines and comments */
|
|
if (!p || *p == '#')
|
|
continue;
|
|
|
|
/* get unicode mapping */
|
|
q = strtok(NULL," \t\n");
|
|
if (q)
|
|
{
|
|
in = ctoi(p, NULL);
|
|
if (in < 0 || in > 255)
|
|
{
|
|
ret_code = -1;
|
|
break;
|
|
}
|
|
|
|
on = ctoi(q, &tmp_is_unicode);
|
|
if (in < 0 && on > 65535)
|
|
{
|
|
ret_code = -1;
|
|
break;
|
|
}
|
|
|
|
*is_unicode |= tmp_is_unicode;
|
|
buf[in] = on;
|
|
}
|
|
else
|
|
{
|
|
ret_code = -1;
|
|
break;
|
|
}
|
|
}
|
|
while (1); /* terminated by break on feof() */
|
|
|
|
/* restore sig mask */
|
|
sigprocmask (SIG_SETMASK, &old_sigset, NULL);
|
|
|
|
return ret_code;
|
|
}
|
|
|
|
|
|
int old_screen_map_read_ascii(FILE *fp, unsigned char buf[])
|
|
{
|
|
char buffer[256];
|
|
int in, on;
|
|
char *p, *q;
|
|
|
|
for (in=0; in<256; in++) buf[in]=in;
|
|
|
|
while (fgets(buffer,sizeof(buffer)-1,fp))
|
|
{
|
|
p = strtok(buffer," \t\n");
|
|
|
|
if (!p || *p == '#')
|
|
continue;
|
|
|
|
q = strtok(NULL," \t\n#");
|
|
if (q)
|
|
{
|
|
in = ctoi(p, NULL);
|
|
if (in < 0 || in > 255) return -1;
|
|
|
|
on = ctoi(q, NULL);
|
|
if (in < 0 && on > 255) return -1;
|
|
|
|
buf[in] = on;
|
|
}
|
|
else return -1;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
|
|
/*
|
|
* - converts a string into an int.
|
|
* - supports dec and hex bytes, hex UCS2, single-quoted byte and UTF8 chars.
|
|
* - returns the converted value
|
|
* - if `is_unicode != NULL', use it to tell whether it was unicode
|
|
*
|
|
* CAVEAT: will report valid UTF mappings using only 1 byte as 8-bit ones.
|
|
*/
|
|
long int ctoi(unsigned char *s, int *is_unicode)
|
|
{
|
|
int i;
|
|
size_t ls;
|
|
|
|
ls = strlen(s);
|
|
if (is_unicode) *is_unicode = 0;
|
|
|
|
/* hex-specified UCS2 */
|
|
if ((strncmp(s,"U+",2) == 0) &&
|
|
(strspn(s+2,"0123456789abcdefABCDEF") == ls-2))
|
|
{
|
|
sscanf(s+2,"%x",&i);
|
|
if (is_unicode) *is_unicode = 1;
|
|
}
|
|
|
|
/* hex-specified byte */
|
|
else if ((ls <= 4) && (strncmp(s,"0x",2) == 0) &&
|
|
(strspn(s+2,"0123456789abcdefABCDEF") == ls-2))
|
|
sscanf(s+2,"%x",&i);
|
|
|
|
/* oct-specified number (byte) */
|
|
else if ((*s == '0') &&
|
|
(strspn(s,"01234567") == ls))
|
|
sscanf(s,"%o",&i);
|
|
|
|
/* dec-specified number (byte) */
|
|
else if (strspn(s,"0123456789") == ls)
|
|
sscanf(s,"%d",&i);
|
|
|
|
/* single-byte quoted char */
|
|
else if ((strlen(s) == 3) && (s[0] == '\'') && (s[2] == '\''))
|
|
i=s[1];
|
|
|
|
/* multi-byte UTF8 quoted char */
|
|
else if ((s[0] == '\'') && (s[ls-1] == '\''))
|
|
{
|
|
s[ls-1] = 0; /* ensure we'll not "parse UTF too far" */
|
|
i = utf8_to_ucs2(s+1);
|
|
if (is_unicode) *is_unicode = 1;
|
|
}
|
|
else
|
|
return(-1);
|
|
|
|
return(i);
|
|
}
|
|
|
|
|
|
void saveoldmap(int fd, char *omfil)
|
|
{
|
|
FILE *fp;
|
|
char buf[E_TABSZ];
|
|
#ifdef GIO_UNISCRNMAP
|
|
unicode xbuf[E_TABSZ];
|
|
int is_old_map = 0;
|
|
|
|
if (ioctl(fd,GIO_UNISCRNMAP,xbuf))
|
|
{
|
|
perror("GIO_UNISCRNMAP ioctl error");
|
|
#endif
|
|
if (ioctl(fd,GIO_SCRNMAP,buf))
|
|
{
|
|
perror("GIO_SCRNMAP ioctl error");
|
|
exit(1);
|
|
}
|
|
else
|
|
is_old_map = 1;
|
|
#ifdef GIO_UNISCRNMAP
|
|
}
|
|
#endif
|
|
|
|
if ((fp = fopen(omfil, "w")) == NULL)
|
|
{
|
|
perror(omfil);
|
|
exit(1);
|
|
}
|
|
|
|
#ifdef GIO_UNISCRNMAP
|
|
if (is_old_map)
|
|
{
|
|
#endif
|
|
if (fwrite(buf,E_TABSZ,1,fp) != 1)
|
|
{
|
|
perror("Error writing map to file");
|
|
exit(1);
|
|
}
|
|
#ifdef GIO_UNISCRNMAP
|
|
}
|
|
else
|
|
if (fwrite(xbuf, sizeof(unicode) * E_TABSZ,1,fp) != 1)
|
|
{
|
|
perror("Error writing map to file");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
|
|
fclose(fp);
|
|
}
|
|
|
|
unicode utf8_to_ucs2 (char* buf)
|
|
{
|
|
int utf_count = 0;
|
|
long utf_char;
|
|
unicode tc;
|
|
unsigned char c;
|
|
|
|
do
|
|
{
|
|
c = *buf;
|
|
buf++;
|
|
|
|
/* if byte should be part of multi-byte sequence */
|
|
if(c & 0x80)
|
|
{
|
|
/* if we have already started to parse a UTF8 sequence */
|
|
if (utf_count > 0 && (c & 0xc0) == 0x80)
|
|
{
|
|
utf_char = (utf_char << 6) | (c & 0x3f);
|
|
utf_count--;
|
|
if (utf_count == 0)
|
|
tc = utf_char;
|
|
else
|
|
continue;
|
|
}
|
|
else /* Possibly 1st char of a UTF8 sequence */
|
|
{
|
|
if ((c & 0xe0) == 0xc0)
|
|
{
|
|
utf_count = 1;
|
|
utf_char = (c & 0x1f);
|
|
}
|
|
else if ((c & 0xf0) == 0xe0)
|
|
{
|
|
utf_count = 2;
|
|
utf_char = (c & 0x0f);
|
|
}
|
|
else if ((c & 0xf8) == 0xf0)
|
|
{
|
|
utf_count = 3;
|
|
utf_char = (c & 0x07);
|
|
}
|
|
else if ((c & 0xfc) == 0xf8)
|
|
{
|
|
utf_count = 4;
|
|
utf_char = (c & 0x03);
|
|
}
|
|
else if ((c & 0xfe) == 0xfc)
|
|
{
|
|
utf_count = 5;
|
|
utf_char = (c & 0x01);
|
|
}
|
|
else
|
|
utf_count = 0;
|
|
continue;
|
|
}
|
|
}
|
|
else /* not part of multi-byte sequence - treat as ASCII
|
|
* this makes incomplete sequences to be ignored
|
|
*/
|
|
{
|
|
tc = c;
|
|
utf_count = 0;
|
|
}
|
|
}
|
|
while (utf_count);
|
|
|
|
return tc;
|
|
}
|
|
|