macutils/hexbin/dl.c

135 lines
2.7 KiB
C

#include "hexbin.h"
#ifdef DL
#include "globals.h"
#include "crc.h"
#include "readline.h"
#include "../fileio/machdr.h"
#include "../fileio/wrfile.h"
#include "../util/util.h"
#include "buffer.h"
#include "printhdr.h"
extern void exit();
static long dl_fork();
static int nchar();
static int nextc();
static char *icp = &line[0];
/* oldest format -- process .dl files */
void dl(macname, filename)
char *macname, *filename;
{
int n;
if(listmode) {
(void)fprintf(stderr, "This file is in \"dl\" format.\n");
}
for(n = 0; n < INFOBYTES; n++) {
info[n] = 0;
}
/* set up for Mac name */
if(macname[0] == '\0') {
/* strip directories */
macname = search_last(filename, '/');
if(macname == NULL) {
macname = filename;
} else {
macname++;
}
/* strip extension */
n = strlen(macname);
if(n > 3) {
n -= 3;
if(!strncmp(macname + n, ".dl", 3)) {
macname[n] = '\0';
}
}
}
n = strlen(macname);
if(n > F_NAMELEN) {
n = F_NAMELEN;
}
(void)strncpy(mh.m_name, macname, n);
(void)strncpy(mh.m_type, "APPL", 4);
(void)strncpy(mh.m_author, "????", 4);
mh.m_name[n] = '\0';
transname(mh.m_name, trname, n);
define_name(trname);
print_header0(0);
print_header1(0, 0);
set_put(1);
mh.m_datalen = 0;
set_put(0);
mh.m_rsrclen = dl_fork();
info[I_NAMEOFF] = n;
(void)strncpy(info + I_NAMEOFF + 1, mh.m_name, n);
(void)strncpy(info + I_TYPEOFF, mh.m_type, 4);
(void)strncpy(info + I_AUTHOFF, mh.m_author, 4);
put4(info + I_DLENOFF, (unsigned long)mh.m_datalen);
put4(info + I_RLENOFF, (unsigned long)mh.m_rsrclen);
put4(info + I_CTIMOFF, (unsigned long)mh.m_createtime);
put4(info + I_MTIMOFF, (unsigned long)mh.m_modifytime);
print_header2(0);
end_put();
}
static long dl_fork()
{
register unsigned long i, v, c;
register unsigned long n, bytes;
n = 0;
bytes = 0;
v = 0;
crc = 0;
while((i = nchar()) != '|') {
if(i < '@' || i > 'O') {
continue;
}
v = (v << 4) | (i & 0xF);
if((++n & 1) == 0) {
put_byte((char)v);
crc += v;
v = 0;
bytes++;
}
}
c = 0;
for(i = 0 ; i < 8 ; i++) {
c = (c << 4) | (nchar() & 0xF);
}
verify_crc(bytes + crc, c);
return bytes;
}
static int nchar()
{
int i;
if((i = nextc()) == EOF) {
(void)fprintf(stderr, "Premature EOF\n");
#ifdef SCAN
do_error("hexbin: Premature EOF");
#endif /* SCAN */
exit(1);
}
return i & 0177;
}
static int nextc()
{
while(*icp == 0) {
if(readline() == 0) {
return EOF;
}
icp = &line[0];
}
return *icp++;
}
#else /* DL */
int dl; /* keep lint and some compilers happy */
#endif /* DL */