libblkid: move string trim function to strutils.h

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/include/strutils.h b/include/strutils.h
index 3883b4288..cfe8a9560 100644
--- a/include/strutils.h
+++ b/include/strutils.h
@@ -161,4 +161,41 @@ static inline const char *skip_blank(const char *p)
 	return p;
 }
 
+
+/* Removes whitespace from the right-hand side of a string (trailing
+ * whitespace).
+ *
+ * Returns size of the new string (without \0).
+ */
+static inline size_t rtrim_whitespace(unsigned char *str)
+{
+	size_t i = strlen((char *) str);
+
+	while (i--) {
+		if (!isspace(str[i]))
+			break;
+	}
+	str[++i] = '\0';
+	return i;
+}
+
+/* Removes whitespace from the left-hand side of a string.
+ *
+ * Returns size of the new string (without \0).
+ */
+static inline size_t ltrim_whitespace(unsigned char *str)
+{
+	size_t len;
+	unsigned char *p;
+
+	for (p = str; p && isspace(*p); p++);
+
+	len = strlen((char *) p);
+
+	if (len && p > str)
+		memmove(str, p, len + 1);
+
+	return len;
+}
+
 #endif