src/common/fgetline.c

#ifndef lint
static const char       RCSid[] = "$Id: fgetline.c,v 2.8 2014/07/09 22:46:51 greg Exp $";
#endif
/*
 * fgetline.c - read line with escaped newlines.
 *
 *  External symbols declared in rtio.h
 */

#include "copyright.h"

#include  "rtio.h"


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

        while (--n > 0 && (c = getc(fp)) != EOF) {
                if (c == '\r' && (c = getc(fp)) != '\n') {
                        ungetc(c, fp);          /* must be Apple file */
                        c = '\n';
                }
                if (c == '\n' && (cp == s || cp[-1] != '\\'))
                        break;
                *cp++ = c;
        }
        if ((cp == s) & (c == EOF))
                return(NULL);
        *cp = '\0';
        return(s);
}
Revision:	2.9
Committed:	Fri Mar 4 00:21:21 2016 UTC (8 years, 1 month ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R2, rad5R1
Changes since 2.8:	+1 -6 lines
Log Message:	Eliminated redundant #define's for getc and putc
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: fgetline.c,v 2.8 2014/07/09 22:46:51 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
15	char *
16	fgetline( /* read in line with escapes, elide final newline */
17	char *s,
18	int n,
19	FILE *fp
20	)
21	{
22	char *cp = s;
23	int c = EOF;
24
25	while (--n > 0 && (c = getc(fp)) != EOF) {
26	if (c == '\r' && (c = getc(fp)) != '\n') {
27	ungetc(c, fp); /* must be Apple file */
28	c = '\n';
29	}
30	if (c == '\n' && (cp == s \|\| cp[-1] != '\\'))
31	break;
32	*cp++ = c;
33	}
34	if ((cp == s) & (c == EOF))
35	return(NULL);
36	*cp = '\0';
37	return(s);
38	}