src/common/fgetline.c

#ifndef lint
static const char       RCSid[] = "$Id: fgetline.c,v 2.9 2016/03/04 00:21:21 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';
#if defined(_WIN32) || defined(_WIN64)
                                                /* remove escaped newlines */
        for (cp = s; (cp = strchr(cp, '\\')) != NULL && cp[1] == '\n'; )
                memmove(cp, cp+2, strlen(cp+2)+1);
#endif
        return(s);
}
Revision:	2.10
Committed:	Wed Jul 29 18:19:31 2020 UTC (3 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+6 -1 lines
Log Message:	fix: Removed escaped newlines for Windows (popen call, mostly)
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.10	static const char RCSid[] = "$Id: fgetline.c,v 2.9 2016/03/04 00:21:21 greg Exp $";
3	greg	1.1	#endif
4			/*
5	greg	1.2	* fgetline.c - read line with escaped newlines.
6	greg	1.1	*
7	greg	2.4	* External symbols declared in rtio.h
8	greg	2.2	*/
9
10	greg	2.3	#include "copyright.h"
11	greg	1.1
12	greg	2.4	#include "rtio.h"
13	greg	1.1
14
15			char *
16	greg	2.8	fgetline( /* read in line with escapes, elide final newline */
17			char *s,
18			int n,
19			FILE *fp
20			)
21	greg	1.1	{
22	greg	2.8	char *cp = s;
23			int c = EOF;
24	greg	1.1
25	greg	1.2	while (--n > 0 && (c = getc(fp)) != EOF) {
26	greg	2.5	if (c == '\r' && (c = getc(fp)) != '\n') {
27			ungetc(c, fp); /* must be Apple file */
28			c = '\n';
29			}
30	greg	1.2	if (c == '\n' && (cp == s \|\| cp[-1] != '\\'))
31			break;
32	greg	1.1	*cp++ = c;
33			}
34	greg	2.8	if ((cp == s) & (c == EOF))
35	greg	1.1	return(NULL);
36	greg	1.2	*cp = '\0';
37	greg	2.10	#if defined(_WIN32) \|\| defined(_WIN64)
38			/* remove escaped newlines */
39			for (cp = s; (cp = strchr(cp, '\\')) != NULL && cp[1] == '\n'; )
40			memmove(cp, cp+2, strlen(cp+2)+1);
41			#endif
42	greg	1.1	return(s);
43			}