From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Fri, 15 Dec 2017 09:38:53 -0500
Subject: Import newlib and create makefile

---
 newlib/libc/stdlib/mblen.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 newlib/libc/stdlib/mblen.c

(limited to 'newlib/libc/stdlib/mblen.c')

diff --git a/newlib/libc/stdlib/mblen.c b/newlib/libc/stdlib/mblen.c
new file mode 100644
index 0000000..d9f048c
--- /dev/null
+++ b/newlib/libc/stdlib/mblen.c
@@ -0,0 +1,63 @@
+/*
+FUNCTION
+<<mblen>>---minimal multibyte length function
+
+INDEX
+	mblen
+
+ANSI_SYNOPSIS
+	#include <stdlib.h>
+	int mblen(const char *<[s]>, size_t <[n]>);
+
+TRAD_SYNOPSIS
+	#include <stdlib.h>
+	int mblen(<[s]>, <[n]>)
+	const char *<[s]>;
+	size_t <[n]>;
+
+DESCRIPTION
+When MB_CAPABLE is not defined, this is a minimal ANSI-conforming 
+implementation of <<mblen>>.  In this case, the
+only ``multi-byte character sequences'' recognized are single bytes,
+and thus <<1>> is returned unless <[s]> is the null pointer or
+has a length of 0 or is the empty string.
+
+When MB_CAPABLE is defined, this routine calls <<_mbtowc_r>> to perform
+the conversion, passing a state variable to allow state dependent
+decoding.  The result is based on the locale setting which may
+be restricted to a defined set of locales.
+
+RETURNS
+This implementation of <<mblen>> returns <<0>> if
+<[s]> is <<NULL>> or the empty string; it returns <<1>> if not MB_CAPABLE or
+the character is a single-byte character; it returns <<-1>>
+if the multi-byte character is invalid; otherwise it returns
+the number of bytes in the multibyte character.
+
+PORTABILITY
+<<mblen>> is required in the ANSI C standard.  However, the precise
+effects vary with the locale.
+
+<<mblen>> requires no supporting OS subroutines.
+*/
+
+#include <stdlib.h>
+
+int
+_DEFUN (mblen, (s, n), 
+        const char *s _AND
+        size_t n)
+{
+#ifdef MB_CAPABLE
+        static int state;
+
+        return _mbtowc_r (_REENT, NULL, s, n, &state);
+#else /* not MB_CAPABLE */
+        if (s == NULL || *s == '\0')
+                return 0;
+        if (n == 0)
+                return -1;
+        return 1;
+#endif /* not MB_CAPABLE */
+}
+
-- 
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