1 files changed, 119 insertions, 0 deletions
diff --git a/grub-core/lib/posix_wrap/wchar.h b/grub-core/lib/posix_wrap/wchar.h
new file mode 100644
index 0000000..e0e04a6
--- /dev/null
+++ b/grub-core/lib/posix_wrap/wchar.h
@@ -0,0 +1,119 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009, 2010  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_POSIX_WCHAR_H
+#define GRUB_POSIX_WCHAR_H	1
+
+#include <grub/charset.h>
+
+#define wint_t grub_posix_wint_t
+#define wchar_t grub_posix_wchar_t
+#define mbstate_t grub_posix_mbstate_t
+
+/* UCS-4.  */
+typedef grub_int32_t wint_t;
+enum
+  {
+    WEOF = -1
+  };
+
+/* UCS-4.  */
+typedef grub_int32_t wchar_t;
+
+typedef struct mbstate {
+  grub_uint32_t code;
+  int count;
+} mbstate_t;
+
+/* UTF-8. */
+#define MB_CUR_MAX 4
+#define MB_LEN_MAX 4
+
+static inline size_t
+mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
+{
+  const char *ptr;
+  if (!s)
+    {
+      pwc = 0;
+      s = "";
+      n = 1;
+    }
+
+  if (pwc)
+    *pwc = 0;
+
+  for (ptr = s; ptr < s + n; ptr++)
+    {
+      if (!grub_utf8_process (*ptr, &ps->code, &ps->count))
+	return -1;
+      if (ps->count)
+	continue;
+      if (pwc)
+	*pwc = ps->code;
+      if (ps->code == 0)
+	return 0;
+      return ptr - s + 1;
+    }
+  return -2;
+}
+
+static inline int
+mbsinit(const mbstate_t *ps)
+{
+  return ps->count == 0;
+}
+
+static inline size_t
+wcrtomb (char *s, wchar_t wc, mbstate_t *ps __attribute__ ((unused)))
+{
+  if (s == 0)
+    return 1;
+  return grub_encode_utf8_character ((grub_uint8_t *) s,
+				     (grub_uint8_t *) s + MB_LEN_MAX,
+				     wc);
+}
+
+static inline wint_t btowc (int c)
+{
+  if (c & ~0x7f)
+    return WEOF;
+  return c;
+}
+
+
+static inline int
+wcscoll (const wchar_t *s1, const wchar_t *s2)
+{
+  while (*s1 && *s2)
+    {
+      if (*s1 != *s2)
+	break;
+
+      s1++;
+      s2++;
+    }
+
+  if (*s1 < *s2)
+    return -1;
+  if (*s1 > *s2)
+    return +1;
+  return 0;
+}
+
+#endif