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📄 Makefile(3.09 KB)
📄 Makefile.depend(274 B)
📄 _secure_path.3(2.52 KB)
📄 _secure_path.c(2.33 KB)
📄 auth.c(1.66 KB)
📄 expand_number.3(2.61 KB)
📄 expand_number.c(2.45 KB)
📄 flopen.3(3.35 KB)
📄 flopen.c(3.69 KB)
📄 fparseln.3(4.53 KB)
📄 fparseln.c(5.27 KB)
📄 getlocalbase.3(3.82 KB)
📄 getlocalbase.c(2.62 KB)
📄 gr_util.c(14.2 KB)
📄 hexdump.3(3.01 KB)
📄 hexdump.c(2.98 KB)
📄 humanize_number.3(5.65 KB)
📄 humanize_number.c(5.35 KB)
📄 kinfo_getallproc.3(2.47 KB)
📄 kinfo_getallproc.c(2.67 KB)
📄 kinfo_getfile.3(2.59 KB)
📄 kinfo_getfile.c(1.46 KB)
📄 kinfo_getproc.3(2.44 KB)
📄 kinfo_getproc.c(2.13 KB)
📄 kinfo_getvmmap.3(2.85 KB)
📄 kinfo_getvmmap.c(1.47 KB)
📄 kinfo_getvmobject.3(2.46 KB)
📄 kinfo_getvmobject.c(2.58 KB)
📄 kld.3(2.69 KB)
📄 kld.c(2.5 KB)
📄 libutil.h(8.04 KB)
📄 login.conf.5(16.41 KB)
📄 login_auth.3(2.3 KB)
📄 login_auth.c(3.01 KB)
📄 login_cap.3(16.04 KB)
📄 login_cap.c(19.22 KB)
📄 login_cap.h(6.25 KB)
📄 login_class.3(6.83 KB)
📄 login_class.c(14 KB)
📄 login_crypt.c(1.92 KB)
📄 login_ok.3(4.27 KB)
📄 login_ok.c(5.76 KB)
📄 login_times.3(5.28 KB)
📄 login_times.c(3.72 KB)
📄 login_tty.3(2.25 KB)
📄 login_tty.c(2.03 KB)
📄 pidfile.3(6.75 KB)
📄 pidfile.c(7.22 KB)
📄 property.3(2.91 KB)
📄 property.c(5.85 KB)
📄 pty.3(4.17 KB)
📄 pty.c(2.99 KB)
📄 pw_util.3(6.88 KB)
📄 pw_util.c(15.18 KB)
📄 quotafile.3(7.32 KB)
📄 quotafile.c(14.98 KB)
📄 realhostname.3(2.97 KB)
📄 realhostname.c(5.59 KB)
📄 realhostname_sa.3(4.56 KB)
📄 stub.c(1.73 KB)
📁 tests
📄 trimdomain.3(2.72 KB)
📄 trimdomain.c(3.39 KB)
📄 uucplock.3(4.94 KB)
📄 uucplock.c(5.5 KB)

Editing: fparseln.c

/*	$NetBSD: fparseln.c,v 1.7 2007/03/08 19:57:53 drochner Exp $	*/

/*-
 * SPDX-License-Identifier: BSD-4-Clause
 *
 * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Christos Zoulas.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libutil.h>

static int isescaped(const char *, const char *, int);

/* isescaped():
 *	Return true if the character in *p that belongs to a string
 *	that starts in *sp, is escaped by the escape character esc.
 */
static int
isescaped(const char *sp, const char *p, int esc)
{
	const char     *cp;
	size_t		ne;

#if 0
	_DIAGASSERT(sp != NULL);
	_DIAGASSERT(p != NULL);
#endif

/* No escape character */
	if (esc == '\0')
		return 0;

/* Count the number of escape characters that precede ours */
	for (ne = 0, cp = p; --cp >= sp && *cp == esc; ne++)
		continue;

/* Return true if odd number of escape characters */
	return (ne & 1) != 0;
}

/* fparseln():
 *	Read a line from a file parsing continuations ending in \
 *	and eliminating trailing newlines, or comments starting with
 *	the comment char.
 */
char *
fparseln(FILE *fp, size_t *size, size_t *lineno, const char str[3], int flags)
{
	static const char dstr[3] = { '\\', '\\', '#' };

size_t	s, len;
	char   *buf;
	char   *ptr, *cp;
	int	cnt;
	char	esc, con, nl, com;

#if 0
	_DIAGASSERT(fp != NULL);
#endif

len = 0;
	buf = NULL;
	cnt = 1;

if (str == NULL)
		str = dstr;

esc = str[0];
	con = str[1];
	com = str[2];
	/*
	 * XXX: it would be cool to be able to specify the newline character,
	 * but unfortunately, fgetln does not let us
	 */
	nl  = '\n';

while (cnt) {
		cnt = 0;

if (lineno)
			(*lineno)++;

if ((ptr = fgetln(fp, &s)) == NULL)
			break;

if (s && com) {		/* Check and eliminate comments */
			for (cp = ptr; cp < ptr + s; cp++)
				if (*cp == com && !isescaped(ptr, cp, esc)) {
					s = cp - ptr;
					cnt = s == 0 && buf == NULL;
					break;
				}
		}

if (s && nl) { 		/* Check and eliminate newlines */
			cp = &ptr[s - 1];

if (*cp == nl)
				s--;	/* forget newline */
		}

if (s && con) {		/* Check and eliminate continuations */
			cp = &ptr[s - 1];

if (*cp == con && !isescaped(ptr, cp, esc)) {
				s--;	/* forget continuation char */
				cnt = 1;
			}
		}

if (s == 0) {
			/*
			 * nothing to add, skip realloc except in case
			 * we need a minimal buf to return an empty line
			 */
			if (cnt || buf != NULL)
				continue;
		}

if ((cp = realloc(buf, len + s + 1)) == NULL) {
			free(buf);
			return NULL;
		}
		buf = cp;

(void) memcpy(buf + len, ptr, s);
		len += s;
		buf[len] = '\0';
	}

if ((flags & FPARSELN_UNESCALL) != 0 && esc && buf != NULL &&
	    strchr(buf, esc) != NULL) {
		ptr = cp = buf;
		while (cp[0] != '\0') {
			int skipesc;

while (cp[0] != '\0' && cp[0] != esc)
				*ptr++ = *cp++;
			if (cp[0] == '\0' || cp[1] == '\0')
				break;

skipesc = 0;
			if (cp[1] == com)
				skipesc += (flags & FPARSELN_UNESCCOMM);
			if (cp[1] == con)
				skipesc += (flags & FPARSELN_UNESCCONT);
			if (cp[1] == esc)
				skipesc += (flags & FPARSELN_UNESCESC);
			if (cp[1] != com && cp[1] != con && cp[1] != esc)
				skipesc = (flags & FPARSELN_UNESCREST);

if (skipesc)
				cp++;
			else
				*ptr++ = *cp++;
			*ptr++ = *cp++;
		}
		*ptr = '\0';
		len = strlen(buf);
	}

if (size)
		*size = len;
	return buf;
}

#ifdef TEST

int
main(int argc, char *argv[])
{
	char   *ptr;
	size_t	size, line;

line = 0;
	while ((ptr = fparseln(stdin, &size, &line, NULL,
	    FPARSELN_UNESCALL)) != NULL)
		printf("line %d (%d) |%s|\n", line, size, ptr);
	return 0;
}

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Editing: fparseln.c

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