1 files changed, 57 insertions, 0 deletions
diff --git a/libmisc/next_line.c b/libmisc/next_line.c
new file mode 100644
index 0000000..0566d7a
--- /dev/null
+++ b/libmisc/next_line.c
@@ -0,0 +1,57 @@
+/*
+  Copyright (C) 2009  Andreas Gruenbacher <agruen@suse.de>
+
+  This program is free software: you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation, either version 2.1 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include "misc.h"
+
+#define LINE_SIZE getpagesize()
+
+char *next_line(FILE *file)
+{
+	static char *line;
+	static size_t line_size;
+	char *c;
+	int eol = 0;
+
+	if (!line) {
+		if (high_water_alloc((void **)&line, &line_size, LINE_SIZE))
+			return NULL;
+	}
+	c = line;
+	do {
+		if (!fgets(c, line_size - (c - line), file))
+			return NULL;
+		c = strrchr(c, '\0');
+		while (c > line && (*(c-1) == '\n' || *(c-1) == '\r')) {
+			c--;
+			*c = '\0';
+			eol = 1;
+		}
+		if (feof(file))
+			break;
+		if (!eol) {
+			if (high_water_alloc((void **)&line, &line_size,
+					     2 * line_size))
+				return NULL;
+			c = strrchr(line, '\0');
+		}
+	} while (!eol);
+	return line;
+}