zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/busybox/src/libbb/trim.c b/ap/app/busybox/src/libbb/trim.c
new file mode 100644
index 0000000..16cb4fb
--- /dev/null
+++ b/ap/app/busybox/src/libbb/trim.c
@@ -0,0 +1,30 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) many different people.
+ * If you wrote this, please acknowledge your work.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include "libbb.h"
+
+void FAST_FUNC trim(char *s)
+{
+ size_t len = strlen(s);
+
+ /* trim trailing whitespace */
+ while (len && isspace(s[len-1]))
+ --len;
+
+ /* trim leading whitespace */
+ if (len) {
+ char *nws = skip_whitespace(s);
+ if ((nws - s) != 0) {
+ len -= (nws - s);
+ memmove(s, nws, len);
+ }
+ }
+ s[len] = '\0';
+}