1 files changed, 52 insertions, 0 deletions
diff --git a/ubi-utils/src/common.c b/ubi-utils/src/common.c
new file mode 100644
index 0000000..4a56128
--- /dev/null
+++ b/ubi-utils/src/common.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) Artem Bityutskiy, 2007
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * This file contains various common stuff used by UBI utilities.
+ */
+
+#include <string.h>
+
+/**
+ * ubiutils_bytes_multiplier - convert size specifier to an integer
+ *                             multiplier.
+ *
+ * @str: the size specifier string
+ *
+ * This function parses the @str size specifier, which may be one of
+ * 'KiB', 'MiB', or 'GiB' into an integer multiplier. Returns positive
+ * size multiplier in case of success and %-1 in case of failure.
+ */
+int ubiutils_get_multiplier(const char *str)
+{
+	if (!str)
+		return 1;
+
+	/* Remove spaces before the specifier */
+	while (*str == ' ' || *str == '\t')
+		str += 1;
+
+	if (!strcmp(str, "KiB"))
+		return 1024;
+	if (!strcmp(str, "MiB"))
+		return 1024 * 1024;
+	if (!strcmp(str, "GiB"))
+		return 1024 * 1024 * 1024;
+
+	return -1;
+}