1 files changed, 42 insertions, 0 deletions
diff --git a/newlib/libc/argz/buf_findstr.c b/newlib/libc/argz/buf_findstr.c
new file mode 100644
index 000000000..792706e88
--- /dev/null
+++ b/newlib/libc/argz/buf_findstr.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+
+/* Find string str in buffer buf of length buf_len.  Point buf to character after string,
+   or set it to NULL if end of buffer is reached.  Return 1 if found, 0 if not. */
+int
+buf_findstr(const char *str, const char **buf, size_t *buf_len)
+{
+  int i = 0;
+  int j = 0;
+
+  for (i = 0; i < *buf_len; i++)
+    {
+      if (str[0] == (*buf)[i])
+        {
+          j = i;
+          while (str[j - i] && (str[j - i] == (*buf)[j])) j++;
+          if(str[j - i] == '\0')
+            {
+              *buf += j;
+              *buf_len -= j;
+              return 1;
+            }
+        }
+    }
+
+  if (i == *buf_len)
+    {
+      *buf += *buf_len;
+      *buf_len = 0;
+    }
+
+  return 0;
+}