Updated next_line fix from AndreasG

Merge of master-melb:xfs-cmds:21594a by kenmcd.

1 files changed, 37 insertions, 0 deletions

diff --git a/libmisc/next_line.c b/libmisc/next_line.c
new file mode 100644
index 0000000..4b5c56a
--- /dev/null
+++ b/libmisc/next_line.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include "misc.h"
+
+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, PATH_MAX))
+			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;
+}