Last change
on this file since 6099cac 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:
1.2 KB
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[3ae31e9] | 1 | /*
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| 2 | =============================================================================
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| 3 | rdline.c -- read a line into a buffer
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| 4 | Version 1 -- 1988-12-29 -- 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 | /*
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| 12 | =============================================================================
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| 13 | rdline(fp, buf, maxc) -- read a line from a file into a buffer
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| 14 |
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| 15 | fp FILE pointer
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| 16 | buf buffer pointer
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| 17 | maxc maximum line length (not counting the terminating zero)
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| 18 |
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| 19 | The buffer must have room for maxc + 1 bytes. The final byte will be
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| 20 | a terminating zero.
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| 21 |
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| 22 | returns:
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| 23 | 0 success line read - complete with LF
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| 24 | -1 failure immediate EOF - no data read
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| 25 | 1 failure read to EOF - missing LF at end
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| 26 | 2 failure buffer full - missing LF at end
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| 27 | =============================================================================
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| 28 | */
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| 29 |
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| 30 | short
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| 31 | rdline(fp, buf, maxc)
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| 32 | register FILE *fp;
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| 33 | register char *buf;
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| 34 | register short maxc;
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| 35 | {
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| 36 | register short c, i;
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| 37 |
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| 38 | *buf = '\0';
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| 39 |
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| 40 | for (i = 0; i < maxc; i++) {
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| 41 |
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| 42 | if (EOF EQ (c = fgetc(fp)))
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| 43 | return(i ? 1 : -1);
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| 44 |
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| 45 | *buf++ = c;
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| 46 | *buf = '\0';
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| 47 |
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| 48 | if (c EQ '\n')
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| 49 | return(0);
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| 50 | }
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| 51 |
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| 52 | return(2);
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| 53 | }
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