src/common/fgetline.c

/* Copyright (c) 1989 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 * fgetline.c - read line with escaped newlines.
 *
 *      10/4/89
 */

#include  <stdio.h>


char *
fgetline(s, n, fp)      /* read in line with escapes, elide final newline */
char  *s;
int  n;
register FILE  *fp;
{
        register char  *cp = s;
        register int  c = EOF;

        while (--n > 0 && (c = getc(fp)) != EOF) {
                if (c == '\n' && (cp == s || cp[-1] != '\\'))
                        break;
                *cp++ = c;
        }
        if (cp == s && c == EOF)
                return(NULL);
        *cp = '\0';
        return(s);
}
Revision:	2.1
Committed:	Tue Nov 12 16:55:18 1991 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+0 -0 lines
Log Message:	updated revision number for release 2.0
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1989 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8	greg	1.2	* fgetline.c - read line with escaped newlines.
9	greg	1.1	*
10			* 10/4/89
11			*/
12
13			#include <stdio.h>
14
15
16			char *
17			fgetline(s, n, fp) /* read in line with escapes, elide final newline */
18			char *s;
19	greg	1.2	int n;
20			register FILE *fp;
21	greg	1.1	{
22	greg	1.2	register char *cp = s;
23			register int c = EOF;
24	greg	1.1
25	greg	1.2	while (--n > 0 && (c = getc(fp)) != EOF) {
26			if (c == '\n' && (cp == s \|\| cp[-1] != '\\'))
27			break;
28	greg	1.1	*cp++ = c;
29			}
30	greg	1.2	if (cp == s && c == EOF)
31	greg	1.1	return(NULL);
32	greg	1.2	*cp = '\0';
33	greg	1.1	return(s);
34			}