new file mode 100644
--- /dev/null
+++ b/font/codeconv.cc
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2000 Yuki Sawada
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "codeconv.h"
+#include "codeconv_tbl.h"
+
+static unsigned int
+codeconv_euc_to_jis(unsigned int euc)
+{
+  unsigned int hi, low;
+
+  hi = (euc >> 8) & 0xff;
+  low = euc & 0xff;
+
+  if (hi < 0x81) {
+    hi = 0;
+  } else if (low == 0x8e)
+    hi = 0;
+  else {
+    hi -= 0x80;
+    low -= 0x80;
+  }
+
+  return (hi << 8) | low;
+}
+
+static unsigned int
+codeconv_jis_to_unicode(unsigned int jis)
+{
+  int k0, k1;
+
+  if (jis < 0x80) return jis; // ASCII
+  k0 = (jis >> 8) - 0x20;
+  if (k0 < 1 || k0 > 92)
+    return 0;
+
+  k1 = (jis % 0x100) - 0x20;
+  if (k1 < 1 || k1 > 94)
+    return 0;
+
+  return unicode_tbl[k0 - 1][k1 - 1];
+}
+
+unsigned int
+codeconv_euc_to_unicode(unsigned int euc)
+{
+  unsigned int jis, unicode;
+
+  jis = codeconv_euc_to_jis(euc);
+  unicode = codeconv_jis_to_unicode(jis);
+
+  return unicode;
+}
+
+static unsigned int
+codeconv_unicode_to_jis(unsigned int unicode)
+{
+  int k0, k1;
+  unsigned int jis;
+
+  k0 = (unicode >> 8) & 0xff;
+  k1 = unicode & 0xff;
+  jis = unicode_rev_table[k0][k1];
+    
+  return jis;
+}
+
+static unsigned int
+codeconv_jis_to_euc(unsigned int jis)
+{
+  unsigned int hi, low;
+
+  hi = (jis >> 8) & 0x7f | 0x80;
+  low = jis & 0x7f | 0x80;
+
+  return (hi << 8) | low;
+}
+
+unsigned int
+codeconv_unicode_to_euc(unsigned int unicode)
+{
+  unsigned int jis, euc;
+
+  if (unicode >= 0xff61 && unicode <= 0xff9f)
+    return unicode - 0xff61 + 0x8ea1;
+
+  jis = codeconv_unicode_to_jis(unicode);
+  if (jis == 0)
+    return 0x7878;
+  euc = codeconv_jis_to_euc(jis);
+
+  return euc;
+}
+
+static unsigned int
+codeconv_jis_to_sjis(unsigned int jis)
+{
+  unsigned int hi, low;
+
+  hi = (jis >> 8) & 0xff;
+  low = jis & 0xff;
+
+  low += (hi & 0x01) ? 0x1f : 0x7d;
+  if (low >= 0x7f)
+    low++;
+  hi = ((hi - 0x21) >> 1) + 0x81;
+  if (hi > 0x9f)
+    hi += 0x40;
+
+  return (hi << 8) | low;
+}
+
+unsigned int
+codeconv_euc_to_sjis(unsigned int euc)
+{
+  unsigned int jis, sjis;
+
+  jis = codeconv_euc_to_jis(euc);
+  sjis = codeconv_jis_to_sjis(jis);
+
+  return sjis;
+}
+
+static unsigned int
+codeconv_sjis_to_jis(unsigned int sjis)
+{
+  unsigned int hi, low;
+
+  hi = (sjis >> 8) & 0xff;
+  low = sjis & 0xff;
+
+  hi -= (hi <= 0x9f) ? 0x71 : 0xb1;
+  hi = (hi << 1) + 1;
+  if (low > 0x7f)
+    low--;
+  if (low >= 0x9e) {
+    low -= 0x7d;
+    hi++;
+  } else
+    low -= 0x1f;
+  
+  return (hi << 8) | low;
+}
+
+unsigned int
+codeconv_sjis_to_euc(unsigned int sjis)
+{
+  unsigned int jis, euc;
+
+  jis = codeconv_sjis_to_jis(sjis);
+  euc = codeconv_jis_to_euc(jis);
+
+  return euc;
+}
+
+unsigned int
+codeconv_euc_to_latin1(unsigned int euc)
+{
+	int high = (euc>>8) & 0xff;
+	if (high) return 0;
+	return euc & 0xff;
+}