1 files changed, 110 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/wctomb_r.c b/newlib/libc/stdlib/wctomb_r.c
new file mode 100644
index 00000000000..8fa6e16db63
--- /dev/null
+++ b/newlib/libc/stdlib/wctomb_r.c
@@ -0,0 +1,110 @@
+#include <stdlib.h>
+#include <locale.h>
+#include "mbctype.h"
+
+int
+_DEFUN (_wctomb_r, (r, s, wchar, state),
+        struct _reent *r     _AND 
+        char          *s     _AND
+        wchar_t        wchar _AND
+        int           *state)
+{
+  if (strlen (r->_current_locale) <= 1)
+    { /* fall-through */ }
+  else if (!strcmp (r->_current_locale, "C-SJIS"))
+    {
+      unsigned char char2 = (unsigned char)wchar;
+      unsigned char char1 = (unsigned char)(wchar >> 8);
+
+      if (s == NULL)
+        return 0;  /* not state-dependent */
+
+      if (char1 != 0x00)
+        {
+        /* first byte is non-zero..validate multi-byte char */
+          if (_issjis1(char1) && _issjis2(char2)) 
+            {
+              *s++ = (char)char1;
+              *s = (char)char2;
+              return 2;
+            }
+          else
+            return -1;
+        }
+    }
+  else if (!strcmp (r->_current_locale, "C-EUCJP"))
+    {
+      unsigned char char2 = (unsigned char)wchar;
+      unsigned char char1 = (unsigned char)(wchar >> 8);
+
+      if (s == NULL)
+        return 0;  /* not state-dependent */
+
+      if (char1 != 0x00)
+        {
+        /* first byte is non-zero..validate multi-byte char */
+          if (_iseucjp (char1) && _iseucjp (char2)) 
+            {
+              *s++ = (char)char1;
+              *s = (char)char2;
+              return 2;
+            }
+          else
+            return -1;
+        }
+    }
+  else if (!strcmp (r->_current_locale, "C-JIS"))
+    {
+      int cnt = 0; 
+      unsigned char char2 = (unsigned char)wchar;
+      unsigned char char1 = (unsigned char)(wchar >> 8);
+
+      if (s == NULL)
+        return 1;  /* state-dependent */
+
+      if (char1 != 0x00)
+        {
+        /* first byte is non-zero..validate multi-byte char */
+          if (_isjis (char1) && _isjis (char2)) 
+            {
+              if (*state == 0)
+                {
+                  /* must switch from ASCII to JIS state */
+                  *state = 1;
+                  *s++ = ESC_CHAR;
+                  *s++ = '$';
+                  *s++ = 'B';
+                  cnt = 3;
+                }
+              *s++ = (char)char1;
+              *s = (char)char2;
+              return cnt + 2;
+            }
+          else
+            return -1;
+        }
+      else
+        {
+          if (*state != 0)
+            {
+              /* must switch from JIS to ASCII state */
+              *state = 0;
+              *s++ = ESC_CHAR;
+              *s++ = '(';
+              *s++ = 'B';
+              cnt = 3;
+            }
+          *s = (char)char2;
+          return cnt + 1;
+        }
+    }
+
+  if (s == NULL)
+    return 0;
+ 
+  /* otherwise we are dealing with a single byte character */
+  *s = (char) wchar;
+  return 1;
+}
+    
+