Adding upstream version 3.3.4.upstream/3.3.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/contrib/getline.c b/src/contrib/getline.c
new file mode 100644
index 0000000..46cdff9
--- /dev/null
+++ b/src/contrib/getline.c
@@ -0,0 +1,60 @@
+/*  Copyright (C) 2011 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+// FreeBSD POSIX2008 getline
+#ifndef _WITH_GETLINE
+#define _WITH_GETLINE
+#endif
+
+#include "contrib/getline.h"
+
+#include <stdio.h>		// getline or fgetln
+#include <stdlib.h>		// free
+#include <string.h>		// memcpy
+
+ssize_t knot_getline(char **lineptr, size_t *n, FILE *stream)
+{
+#ifdef HAVE_GETLINE
+	return getline(lineptr, n, stream);
+#else
+#ifdef HAVE_FGETLN
+	size_t length = 0;
+	char *buffer = fgetln(stream, &length);
+	if (buffer == NULL) {
+		return -1;
+	}
+
+	/* NOTE: Function fgetln doesn't return terminated string!
+	 *       Output buffer from the fgetln can't be freed.
+	 */
+
+	// If the output buffer is not specified or is small, extend it.
+	if (*lineptr == NULL || *n <= length) {
+		char *tmp = realloc(*lineptr, length + 1);
+		if (tmp == NULL) {
+			return -1;
+		}
+		*lineptr = tmp;
+		*n = length + 1;
+	}
+
+	memcpy(*lineptr, buffer, length);
+	(*lineptr)[length] = '\0';
+
+	return length;
+#endif
+#endif
+}