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/*
* $Author: cck $ $Date: 88/02/22 09:33:24 $
* $Header: abpp.c,v 1.5 88/02/22 09:33:24 cck Rel $
* $Revision: 1.5 $
*/
/*
* abpp - Unix Printer Access Protocol calls
*
* A set of routines which emulate the unix read/write calls.
* The calls are always synchronous.
*
* Note: these aren't much use unless you fork off since
* a blocking read will pretty much kill you
*
*
* AppleTalk package for UNIX (4.2 BSD).
*
* Copyright (c) 1986, 1987 by The Trustees of Columbia University in the
* City of New York.
*
* Edit History:
*
* July 5, 1986 CCKim Created.
*
*/
#include <stdio.h>
#include <sys/types.h>
#include <netat/appletalk.h>
/*
* ppopen
*
* open pap socket
*
* note: does not return until connection is opened.
*
*/
int
ppopen(cno, lwname, flowq, pstatus)
int *cno;
char *lwname;
int flowq;
int (*pstatus)();
{
int err;
PAPStatusRec statusbuff;
int rcomp;
while ((err = PAPOpen(cno, lwname, flowq, &statusbuff, &rcomp)) != noErr) {
(*pstatus)(&statusbuff.StatusStr[1]);
sleep(5); /* wait five seconds */
}
do {
abSleep(4*5, TRUE); /* wait 2 seconds */
(*pstatus)(&statusbuff.StatusStr[1]);
} while (rcomp > 0);
return(rcomp);
}
/*
* ppread
*
* Read from the LaserWriter
*
* Note: buf is assume to be PAPSegSize * flowquantum returned by the
* laserWriter. To be safe, use 512 (PAPSegSize) * 8 (the maximum flow
* quantum)
*
* returns number of bytes or zero to indicate eof
*
*/
ppread(cno, buf)
int cno;
char *buf;
{
int rcomp;
int rlen;
static int eof = 0;
int err;
if (eof) /* check for eof on previous call */
return(0);
do {
if ((err = PAPRead(cno, buf, &rlen, &eof, &rcomp)) != noErr)
return(err);
do { abSleep(4, TRUE); } while (rcomp > 0);
if (rcomp > 0)
return(rcomp);
} while (rlen == 0 && !eof);
if (eof && rlen == 0)
return(0); /* zero length indicates eof */
return(rlen);
}
/*
* ppwrite - write to laserWriter
*
* eof - true if we are to send eof to the laserwriter
*
*/
ppwrite(cno, buf, blen, eof)
int cno;
char *buf;
int blen;
{
int wcomp;
int err;
err = PAPWrite(cno, buf, blen, eof, &wcomp); /* send eof */
if (err != noErr)
return(err);
do { abSleep(4, TRUE); } while (wcomp > 0);
return(err);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.