From 4e2e9df991e633cb70e1cb7f85ca678685d7a8e8 Mon Sep 17 00:00:00 2001 From: pfg Date: Sat, 16 Aug 2014 00:54:56 +0000 Subject: [PATCH] MFC r269015: fparseln(3): Update from NetBSD sources. -fix a condition so that fparseln() doesn't report spurious empty lines eg after 2 comment lines, or on EOF after a single comment line -no escape character means no escaped characters modify the previous fix so that no pointless realloc()s are done in the case of multiple empty continuation lines, and comment the code to make the logics obvious. fparseln is now part of libc in NetBSD so this changes the previous revision numbering. Obtained from: NetBSD (CVS Rev. 1.6-1.7) git-svn-id: svn://svn.freebsd.org/base/stable/10@270031 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- lib/libutil/fparseln.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/lib/libutil/fparseln.c b/lib/libutil/fparseln.c index 0624f0e4e..d03357eae 100644 --- a/lib/libutil/fparseln.c +++ b/lib/libutil/fparseln.c @@ -1,4 +1,4 @@ -/* $NetBSD: fparseln.c,v 1.9 1999/09/20 04:48:06 lukem Exp $ */ +/* $NetBSD: fparseln.c,v 1.7 2007/03/08 19:57:53 drochner Exp $ */ /* * Copyright (c) 1997 Christos Zoulas. All rights reserved. @@ -59,7 +59,7 @@ isescaped(const char *sp, const char *p, int esc) /* No escape character */ if (esc == '\0') - return 1; + return 0; /* Count the number of escape characters that precede ours */ for (ne = 0, cp = p; --cp >= sp && *cp == esc; ne++) @@ -135,13 +135,19 @@ fparseln(FILE *fp, size_t *size, size_t *lineno, const char str[3], int flags) cp = &ptr[s - 1]; if (*cp == con && !isescaped(ptr, cp, esc)) { - s--; /* forget escape */ + s--; /* forget continuation char */ cnt = 1; } } - if (s == 0 && buf != NULL) - continue; + 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); -- 2.45.0