home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
rtsi.com
/
2014.01.www.rtsi.com.tar
/
www.rtsi.com
/
OS9
/
OSK
/
APPS
/
macutils.lzh
/
MACUTILS
/
COMM
/
xm_to.c
< prev
next >
Wrap
C/C++ Source or Header
|
1995-09-18
|
2KB
|
99 lines
#include "comm.h"
#ifdef XM
#include "../fileio/machdr.h"
#include "../fileio/rdfile.h"
#include "../util/masks.h"
#include "globals.h"
#include "protocol.h"
extern int tgetc();
extern void tputc();
extern void tputrec();
static void send_part();
static int send_sync();
static void send_rec();
void xm_to()
{
if(send_sync() == ACK) {
send_part(file_info, DATABYTES, 1);
send_part(data_fork, data_size, 1);
send_part(rsrc_fork, rsrc_size, 0);
}
}
static void send_part(info, size, more)
char *info;
int size, more;
{
int recno = 1, i, status;
while(size > 0) {
for(i = 0; i < RETRIES; i++) {
send_rec(info, DATABYTES, recno);
status = tgetc(ACKTIMO);
if(status != NAK) {
break;
}
}
if(status == NAK || status == CAN) {
cleanup(-1);
}
size -= DATABYTES;
info += DATABYTES;
recno = (recno + 1) & MAXRECNO;
}
tputc(EOT);
if(!pre_beta) {
status = tgetc(ACKTIMO);
}
if(more) {
status = tgetc(ACKTIMO);
}
}
static int send_sync()
{
int c, i;
for(i = 0; i < 3; i++) {
tputc(ESC);
tputc('a');
while((c = tgetc(ACKTIMO)) != TMO) {
switch(c) {
case CAN:
case EOT:
case ACK:
return c;
default:
continue;
}
}
}
return CAN;
}
static void send_rec(buf, bufsize, recno)
char *buf;
int bufsize, recno;
{
int i, cksum;
char *bp;
cksum = 0;
bp = buf;
for(i = 0; i < bufsize; i++) {
cksum += *bp++ & BYTEMASK;
}
tputc(SOH);
tputc((unsigned char)recno);
tputc((unsigned char)(MAXRECNO - recno));
tputrec(buf, bufsize);
tputc((char)(cksum & BYTEMASK));
}
#else /* XM */
int xm_to; /* Keep lint and some compilers happy */
#endif /* XM */