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| 1 | /* $Header: /cvsup/minix/src/lib/ack/libp/incpt.c,v 1.1 2005/10/10 15:27:47 beng Exp $ */
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| 2 | /*
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| 3 | * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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| 4 | *
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| 5 | * This product is part of the Amsterdam Compiler Kit.
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| 6 | *
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| 7 | * Permission to use, sell, duplicate or disclose this software must be
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| 8 | * obtained in writing. Requests for such permissions may be sent to
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| 9 | *
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| 10 | * Dr. Andrew S. Tanenbaum
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| 11 | * Wiskundig Seminarium
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| 12 | * Vrije Universiteit
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| 13 | * Postbox 7161
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| 14 | * 1007 MC Amsterdam
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| 15 | * The Netherlands
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| 16 | *
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| 17 | */
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| 18 |
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| 19 | /* Author: J.W. Stevenson */
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| 20 |
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| 21 | #include <pc_file.h>
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| 22 | #include <pc_err.h>
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| 23 |
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| 24 | #define EINTR 4
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| 25 |
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| 26 | extern int errno;
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| 27 | extern _trp();
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| 28 | extern int _read();
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| 29 |
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| 30 | _incpt(f) struct file *f; {
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| 31 |
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| 32 | if (f->flags & EOFBIT)
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| 33 | _trp(EEOF);
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| 34 | f->flags |= WINDOW;
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| 35 | f->flags &= ~ELNBIT;
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| 36 | #ifdef CPM
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| 37 | do {
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| 38 | #endif
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| 39 | f->ptr += f->size;
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| 40 | if (f->count == 0) {
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| 41 | f->ptr = f->bufadr;
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| 42 | for(;;) {
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| 43 | f->count=_read(f->ufd,f->bufadr,f->buflen);
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| 44 | if ( f->count<0 ) {
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| 45 | if (errno != EINTR) _trp(EREAD) ;
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| 46 | continue ;
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| 47 | }
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| 48 | break ;
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| 49 | }
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| 50 | if (f->count == 0) {
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| 51 | f->flags |= EOFBIT;
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| 52 | *f->ptr = '\0';
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| 53 | return;
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| 54 | }
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| 55 | }
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| 56 | if ((f->count -= f->size) < 0)
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| 57 | _trp(EFTRUNC);
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| 58 | #ifdef CPM
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| 59 | } while ((f->flags&TXTBIT) && *f->ptr == '\r');
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| 60 | #endif
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| 61 | if (f->flags & TXTBIT) {
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| 62 | if (*f->ptr & 0200)
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| 63 | _trp(EASCII);
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| 64 | if (*f->ptr == '\n') {
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| 65 | f->flags |= ELNBIT;
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| 66 | *f->ptr = ' ';
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| 67 | }
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| 68 | #ifdef CPM
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| 69 | if (*f->ptr == 26) {
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| 70 | f->flags |= EOFBIT;
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| 71 | *f->ptr = 0;
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| 72 | }
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| 73 | #endif
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| 74 | }
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| 75 | }
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