* include/ruby/oniguruma.h: remove ONIG_ENCODING_* and OnigEncoding*

  which are not builtin.

* regenc.{c,h} (onigenc_mb2_code_to_mbclen, onigenc_mb4_code_to_mbclen):
  fix prototype.

* enc/big5.c, enc/euc_kr.c, enc/euc_tw.c, enc/gb18030.c,
  enc/koi8_r.c, enc/windows_1251.c: imported from Oniguruma.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15026 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 140 insertions, 0 deletions

diff --git a/enc/euc_tw.c b/enc/euc_tw.c
new file mode 100644
index 0000000000..cc3a3648f1
--- /dev/null
+++ b/enc/euc_tw.c
@@ -0,0 +1,140 @@
+/**********************************************************************
+  euc_tw.c -  Oniguruma (regular expression library)
+**********************************************************************/
+/*-
+ * Copyright (c) 2002-2007  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 "regenc.h"
+
+OnigEncodingDeclare(EUC_TW);
+
+static const int EncLen_EUCTW[] = {
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
+};
+
+static int
+euctw_mbc_enc_len(const UChar* p, const UChar* end, OnigEncoding enc)
+{
+  return EncLen_EUCTW[*p];
+}
+
+static OnigCodePoint
+euctw_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc)
+{
+  return onigenc_mbn_mbc_to_code(&OnigEncodingName(EUC_TW), p, end);
+}
+
+static int
+euctw_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc)
+{
+  return onigenc_mb4_code_to_mbc(&OnigEncodingName(EUC_TW), code, buf);
+}
+
+static int
+euctw_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end,
+                    UChar* lower, OnigEncoding enc)
+{
+  return onigenc_mbn_mbc_case_fold(&OnigEncodingName(EUC_TW), flag,
+                                   pp, end, lower);
+}
+
+#if 0
+static int
+euctw_is_mbc_ambiguous(OnigCaseFoldType flag,
+		       const UChar** pp, const UChar* end, OnigEncoding enc)
+{
+  return onigenc_mbn_is_mbc_ambiguous(&OnigEncodingName(EUC_TW), flag, pp, end);
+}
+#endif
+
+static int
+euctw_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc)
+{
+  return onigenc_mb4_is_code_ctype(&OnigEncodingName(EUC_TW), code, ctype);
+}
+
+#define euctw_islead(c)    (((c) < 0xa1 && (c) != 0x8e) || (c) == 0xff)
+
+static UChar*
+euctw_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc)
+{
+  /* Assumed in this encoding,
+     mb-trail bytes don't mix with single bytes.
+  */
+  const UChar *p;
+  int len;
+
+  if (s <= start) return (UChar* )s;
+  p = s;
+
+  while (!euctw_islead(*p) && p > start) p--;
+  len = enclen(&OnigEncodingName(EUC_TW), p, s);
+  if (p + len > s) return (UChar* )p;
+  p += len;
+  return (UChar* )(p + ((s - p) & ~1));
+}
+
+static int
+euctw_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED, OnigEncoding enc)
+{
+  const UChar c = *s;
+  if (c <= 0x7e) return TRUE;
+  else           return FALSE;
+}
+
+OnigEncodingDefine(euc_tw, EUC_TW) = {
+  euctw_mbc_enc_len,
+  "EUC-TW",   /* name */
+  4,          /* max enc length */
+  1,          /* min enc length */
+  onigenc_is_mbc_newline_0x0a,
+  euctw_mbc_to_code,
+  onigenc_mb4_code_to_mbclen,
+  euctw_code_to_mbc,
+  euctw_mbc_case_fold,
+  onigenc_ascii_apply_all_case_fold,
+  onigenc_ascii_get_case_fold_codes_by_str,
+  onigenc_minimum_property_name_to_ctype,
+  euctw_is_code_ctype,
+  onigenc_not_support_get_ctype_code_range,
+  euctw_left_adjust_char_head,
+  euctw_is_allowed_reverse_match
+};