source: buchla-68k/orig/GP/RDLINE.C@ 2340de6

Last change on this file since 2340de6 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Imported original source code.

  • Property mode set to 100755
File size: 1.2 KB
Line 
1/*
2 =============================================================================
3 rdline.c -- read a line into a buffer
4 Version 1 -- 1988-12-29 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "stdio.h"
9#include "stddefs.h"
10
11/*
12 =============================================================================
13 rdline(fp, buf, maxc) -- read a line from a file into a buffer
14
15 fp FILE pointer
16 buf buffer pointer
17 maxc maximum line length (not counting the terminating zero)
18
19 The buffer must have room for maxc + 1 bytes. The final byte will be
20 a terminating zero.
21
22 returns:
23 0 success line read - complete with LF
24 -1 failure immediate EOF - no data read
25 1 failure read to EOF - missing LF at end
26 2 failure buffer full - missing LF at end
27 =============================================================================
28*/
29
30short
31rdline(fp, buf, maxc)
32register FILE *fp;
33register char *buf;
34register short maxc;
35{
36 register short c, i;
37
38 *buf = '\0';
39
40 for (i = 0; i < maxc; i++) {
41
42 if (EOF EQ (c = fgetc(fp)))
43 return(i ? 1 : -1);
44
45 *buf++ = c;
46 *buf = '\0';
47
48 if (c EQ '\n')
49 return(0);
50 }
51
52 return(2);
53}
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