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MACUNPACK
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mcb.c
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C/C++ Source or Header
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1995-09-18
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3KB
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138 lines
#include "globals.h"
#include "../fileio/machdr.h"
#include "../fileio/wrfile.h"
#include "../util/masks.h"
#include "../util/util.h"
static int mcb_read;
static void mcb_wrfile();
void mcb(hdr, rsrcLength, dataLength, toread)
char *hdr;
unsigned long rsrcLength, dataLength;
int toread;
{
register int i;
int n;
char ftype[5], fauth[5];
mcb_read = toread;
for(i = 0; i < INFOBYTES; i++) {
info[i] = hdr[i];
}
n = hdr[I_NAMEOFF] & BYTEMASK;
if(n > F_NAMELEN) {
n = F_NAMELEN;
}
info[I_NAMEOFF] = n;
transname(hdr + I_NAMEOFF + 1, text, n);
if(hdr[I_LOCKOFF] & 1) {
hdr[I_FLAGOFF + 1] = PROTCT_MASK;
hdr[I_LOCKOFF] &= ~1;
}
write_it = 1;
if(list) {
transname(hdr + I_TYPEOFF, ftype, 4);
transname(hdr + I_AUTHOFF, fauth, 4);
do_indent(indent);
(void)fprintf(stderr,
"name=\"%s\", type=%4.4s, author=%4.4s, data=%ld, rsrc=%ld",
text, ftype, fauth, (long)dataLength, (long)rsrcLength);
if(info_only) {
write_it = 0;
}
if(query) {
write_it = do_query();
} else {
(void)fputc('\n', stderr);
}
}
if(write_it) {
define_name(text);
}
if(write_it) {
start_info(info, rsrcLength, dataLength);
}
if(verbose) {
(void)fprintf(stderr, "\tData: ");
}
if(write_it) {
start_data();
}
mcb_wrfile(dataLength);
if(verbose) {
(void)fprintf(stderr, ", Rsrc: ");
}
if(write_it) {
start_rsrc();
}
mcb_wrfile(rsrcLength);
if(write_it) {
end_file();
}
if(verbose) {
(void)fprintf(stderr, ".\n");
}
}
static void mcb_wrfile(ibytes)
unsigned long ibytes;
{
int n;
if(ibytes == 0) {
if(verbose) {
(void)fprintf(stderr, "empty");
}
return;
}
if(verbose) {
(void)fprintf(stderr, "No compression");
}
if(write_it) {
n = fread(out_buffer, 1, (int)ibytes, infp);
if(n != ibytes) {
(void)fprintf(stderr, "Premature EOF\n");
#ifdef SCAN
do_error("macunpack: Premature EOF");
#endif /* SCAN */
exit(1);
}
mcb_read -= n;
n = ((n + 127) / 128) * 128 - n;
if(n > mcb_read) {
n = mcb_read;
}
mcb_read -= n;
while(n-- > 0) {
if(getc(infp) == EOF) {
(void)fprintf(stderr, "Premature EOF\n");
#ifdef SCAN
do_error("macunpack: Premature EOF");
#endif /* SCAN */
exit(1);
}
}
} else {
n = ((ibytes + 127) / 128) * 128;
if(n > mcb_read) {
n = mcb_read;
}
mcb_read -= n;
while(n-- > 0) {
if(getc(infp) == EOF) {
(void)fprintf(stderr, "Premature EOF\n");
#ifdef SCAN
do_error("macunpack: Premature EOF");
#endif /* SCAN */
exit(1);
}
}
}
}