Last change
on this file since 9519422 was 7258c6a, checked in by Thomas Lopatic <thomas@…>, 7 years ago |
Use standard integer types.
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Property mode
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100644
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File size:
837 bytes
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1 | /*
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2 | ============================================================================
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3 | getc.c -- get a character from a stream file
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4 | Version 3 -- 1987-09-22 -- D.N. Lynx Crowe
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5 | ============================================================================
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6 | */
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7 |
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8 | #include "stdio.h"
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9 | #include "stddefs.h"
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10 |
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11 | int16_t getc(FILE *ptr)
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12 | {
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13 | register int16_t len;
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14 |
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15 | if (ptr->_bp >= ptr->_bend) { /* see if the buffer is empty */
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16 |
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17 | if (ptr->_flags & _EOF) /* check EOF status */
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18 | return(EOF);
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19 |
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20 | ptr->_flags &= ~_DIRTY; /* reset the dirty buffer bit */
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21 |
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22 | if (ptr->_buff EQ NULL) /* get a buffer if none exists */
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23 | getbuff(ptr);
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24 |
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25 | if ((len = read(ptr->_unit, ptr->_buff, ptr->_buflen)) LE 0) {
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26 |
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27 | ptr->_flags |= ((len EQ 0) ? _EOF : _IOERR);
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28 | return(EOF);
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29 | }
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30 |
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31 | ptr->_bend = (ptr->_bp = ptr->_buff) + len;
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32 | }
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33 |
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34 | return(*ptr->_bp++ & 0xFF);
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35 | }
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