Last change
on this file since 5f1d169 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 8 years ago |
Imported original source code.
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Property mode
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100755
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File size:
1.0 KB
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[3ae31e9] | 1 | /*
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| 2 | ============================================================================
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| 3 | flread.c -- read a long buffer
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| 4 | Version 2 -- 1987-07-09 -- 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 | #define CHUNK 32256 /* largest practical sized chunk of data */
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| 12 |
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| 13 | /*
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| 14 | ============================================================================
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| 15 | flread(buff, len, fp) -- Reads 'len' bytes into 'buff' from file 'fp'.
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| 16 |
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| 17 | Returns SUCCESS (0) if OK, EOF (-1) on end of file.
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| 18 | ============================================================================
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| 19 | */
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| 20 |
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| 21 | int
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| 22 | flread(buff, len, fp)
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| 23 | register char *buff;
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| 24 | register long len;
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| 25 | FILE *fp;
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| 26 | {
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| 27 | register int ilen;
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| 28 |
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| 29 | while (len > 0L) {
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| 30 |
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| 31 | if (len GE (long)CHUNK) {
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| 32 |
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| 33 | if (1 NE fread(buff, CHUNK, 1, fp))
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| 34 | return(EOF);
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| 35 |
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| 36 | buff += (long)CHUNK;
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| 37 | len -= (long)CHUNK;
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| 38 |
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| 39 | } else {
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| 40 |
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| 41 | ilen = len;
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| 42 |
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| 43 | if (1 NE fread(buff, ilen, 1, fp))
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| 44 | return(EOF);
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| 45 |
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| 46 | len = 0L;
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| 47 | }
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| 48 | }
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| 49 |
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| 50 | return(SUCCESS);
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| 51 | }
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| 52 |
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