75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
/* $Header$ */
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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/* Author: J.W. Stevenson */
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#include <pc_file.h>
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#include <pc_err.h>
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#define EINTR 4
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extern int errno;
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extern _trp();
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extern int read();
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_incpt(f) struct file *f; {
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if (f->flags & EOFBIT)
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_trp(EEOF);
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f->flags |= WINDOW;
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f->flags &= ~ELNBIT;
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#ifdef CPM
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do {
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#endif
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f->ptr += f->size;
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if (f->count == 0) {
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f->ptr = f->bufadr;
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for(;;) {
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f->count=read(f->ufd,f->bufadr,f->buflen);
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if ( f->count<0 ) {
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if (errno != EINTR) _trp(EREAD) ;
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continue ;
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}
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break ;
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}
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if (f->count == 0) {
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f->flags |= EOFBIT;
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*f->ptr = '\0';
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return;
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}
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}
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if ((f->count -= f->size) < 0)
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_trp(EFTRUNC);
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#ifdef CPM
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} while ((f->flags&TXTBIT) && *f->ptr == '\r');
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#endif
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if (f->flags & TXTBIT) {
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if (*f->ptr & 0200)
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_trp(EASCII);
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if (*f->ptr == '\n') {
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f->flags |= ELNBIT;
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*f->ptr = ' ';
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}
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#ifdef CPM
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if (*f->ptr == 26) {
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f->flags |= EOFBIT;
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*f->ptr = 0;
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}
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#endif
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}
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}
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