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root/radiance/ray/src/common/fgetline.c
Revision: 2.7
Committed: Tue Sep 14 02:53:50 2004 UTC (19 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9
Changes since 2.6: +2 -1 lines
Log Message:
Added #undef for getc/putc where they were being replaced

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: fgetline.c,v 2.6 2004/04/29 14:36:49 greg Exp $";
3 #endif
4 /*
5 * fgetline.c - read line with escaped newlines.
6 *
7 * External symbols declared in rtio.h
8 */
9
10 #include "copyright.h"
11
12 #include "rtio.h"
13
14 #ifdef getc_unlocked /* avoid horrendous overhead of flockfile */
15 #undef getc
16 #define getc getc_unlocked
17 #endif
18
19
20 char *
21 fgetline(s, n, fp) /* read in line with escapes, elide final newline */
22 char *s;
23 int n;
24 register FILE *fp;
25 {
26 register char *cp = s;
27 register int c = EOF;
28
29 while (--n > 0 && (c = getc(fp)) != EOF) {
30 if (c == '\r' && (c = getc(fp)) != '\n') {
31 ungetc(c, fp); /* must be Apple file */
32 c = '\n';
33 }
34 if (c == '\n' && (cp == s || cp[-1] != '\\'))
35 break;
36 *cp++ = c;
37 }
38 if (cp == s && c == EOF)
39 return(NULL);
40 *cp = '\0';
41 return(s);
42 }