* 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, 500 insertions, 0 deletions

diff --git a/enc/gb18030.c b/enc/gb18030.c
new file mode 100644
index 0000000000..e3b72f264a
--- /dev/null
+++ b/enc/gb18030.c
@@ -0,0 +1,500 @@
+/**********************************************************************
+  gb18030.c -  Oniguruma (regular expression library)
+**********************************************************************/
+/*-
+ * Copyright (c) 2005-2007  KUBO Takehiro <kubo AT jiubao DOT org>
+ *                          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(GB18030);
+
+#if 1
+#define DEBUG_GB18030(arg)
+#else
+#define DEBUG_GB18030(arg) printf arg
+#endif
+
+enum {
+  C1, /* one-byte char */
+  C2, /* one-byte or second of two-byte char */
+  C4, /* one-byte or second or fourth of four-byte char */
+  CM  /* first of two- or four-byte char or second of two-byte char */
+};
+
+static const char GB18030_MAP[] = {
+  C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
+  C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
+  C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
+  C4, C4, C4, C4, C4, C4, C4, C4, C4, C4, C1, C1, C1, C1, C1, C1,
+  C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2,
+  C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2,
+  C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2,
+  C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C1,
+  C2, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM,
+  CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, CM, C1
+};
+
+static int
+gb18030_mbc_enc_len(const UChar* p, const UChar* end, OnigEncoding enc)
+{
+  if (GB18030_MAP[*p] != CM)
+    return 1;
+  p++;
+  if (GB18030_MAP[*p] == C4)
+    return 4;
+  if (GB18030_MAP[*p] == C1)
+    return 1; /* illegal sequence */
+  return 2;
+}
+
+static OnigCodePoint
+gb18030_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc)
+{
+  return onigenc_mbn_mbc_to_code(&OnigEncodingName(GB18030), p, end);
+}
+
+static int
+gb18030_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc)
+{
+  return onigenc_mb4_code_to_mbc(&OnigEncodingName(GB18030), code, buf);
+}
+
+static int
+gb18030_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end,
+                      UChar* lower, OnigEncoding enc)
+{
+  return onigenc_mbn_mbc_case_fold(&OnigEncodingName(GB18030), flag,
+                                   pp, end, lower);
+}
+
+#if 0
+static int
+gb18030_is_mbc_ambiguous(OnigCaseFoldType flag,
+			 const UChar** pp, const UChar* end, OnigEncoding enc)
+{
+  return onigenc_mbn_is_mbc_ambiguous(&OnigEncodingName(GB18030), flag, pp, end);
+}
+#endif
+
+static int
+gb18030_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc)
+{
+  return onigenc_mb4_is_code_ctype(&OnigEncodingName(GB18030), code, ctype);
+}
+
+enum state {
+  S_START,
+  S_one_C2,
+  S_one_C4,
+  S_one_CM,
+
+  S_odd_CM_one_CX,
+  S_even_CM_one_CX,
+
+  /* CMC4 : pair of "CM C4" */
+  S_one_CMC4,
+  S_odd_CMC4,
+  S_one_C4_odd_CMC4,
+  S_even_CMC4,
+  S_one_C4_even_CMC4,
+
+  S_odd_CM_odd_CMC4,
+  S_even_CM_odd_CMC4,
+
+  S_odd_CM_even_CMC4,
+  S_even_CM_even_CMC4,
+
+  /* C4CM : pair of "C4 CM" */
+  S_odd_C4CM,
+  S_one_CM_odd_C4CM,
+  S_even_C4CM,
+  S_one_CM_even_C4CM,
+
+  S_even_CM_odd_C4CM,
+  S_odd_CM_odd_C4CM,
+  S_even_CM_even_C4CM,
+  S_odd_CM_even_C4CM,
+};
+
+static UChar*
+gb18030_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc)
+{
+  const UChar *p;
+  enum state state = S_START;
+
+  DEBUG_GB18030(("----------------\n"));
+  for (p = s; p >= start; p--) {
+    DEBUG_GB18030(("state %d --(%02x)-->\n", state, *p));
+    switch (state) {
+    case S_START:
+      switch (GB18030_MAP[*p]) {
+      case C1:
+	return (UChar *)s;
+      case C2:
+	state = S_one_C2; /* C2 */
+	break;
+      case C4:
+	state = S_one_C4; /* C4 */
+	break;
+      case CM:
+	state = S_one_CM; /* CM */
+	break;
+      }
+      break;
+    case S_one_C2: /* C2 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)s;
+      case CM:
+	state = S_odd_CM_one_CX; /* CM C2 */
+	break;
+      }
+      break;
+    case S_one_C4: /* C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)s;
+      case CM:
+	state = S_one_CMC4;
+	break;
+      }
+      break;
+    case S_one_CM: /* CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)s;
+      case C4:
+	state = S_odd_C4CM;
+	break;
+      case CM:
+	state = S_odd_CM_one_CX; /* CM CM */
+	break;
+      }
+      break;
+
+    case S_odd_CM_one_CX: /* CM C2 */ /* CM CM */ /* CM CM CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 1);
+      case CM:
+	state = S_even_CM_one_CX;
+	break;
+      }
+      break;
+    case S_even_CM_one_CX: /* CM CM C2 */ /* CM CM CM */ /* CM CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)s;
+      case CM:
+	state = S_odd_CM_one_CX;
+	break;
+      }
+      break;
+
+    case S_one_CMC4: /* CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)(s - 1);
+      case C4:
+	state = S_one_C4_odd_CMC4; /* C4 CM C4 */
+	break;
+      case CM:
+	state = S_even_CM_one_CX; /* CM CM C4 */
+	break;
+      }
+      break;
+    case S_odd_CMC4: /* CM C4 CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)(s - 1);
+      case C4:
+	state = S_one_C4_odd_CMC4;
+	break;
+      case CM:
+	state = S_odd_CM_odd_CMC4;
+	break;
+      }
+      break;
+    case S_one_C4_odd_CMC4: /* C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 1);
+      case CM:
+	state = S_even_CMC4; /* CM C4 CM C4 */
+	break;
+      }
+      break;
+    case S_even_CMC4: /* CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)(s - 3);
+      case C4:
+	state = S_one_C4_even_CMC4;
+	break;
+      case CM:
+	state = S_odd_CM_even_CMC4;
+	break;
+      }
+      break;
+    case S_one_C4_even_CMC4: /* C4 CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 3);
+      case CM:
+	state = S_odd_CMC4;
+	break;
+      }
+      break;
+
+    case S_odd_CM_odd_CMC4: /* CM CM C4 CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 3);
+      case CM:
+	state = S_even_CM_odd_CMC4;
+	break;
+      }
+      break;
+    case S_even_CM_odd_CMC4: /* CM CM CM C4 CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 1);
+      case CM:
+	state = S_odd_CM_odd_CMC4;
+	break;
+      }
+      break;
+
+    case S_odd_CM_even_CMC4: /* CM CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 1);
+      case CM:
+	state = S_even_CM_even_CMC4;
+	break;
+      }
+      break;
+    case S_even_CM_even_CMC4: /* CM CM CM C4 CM C4 */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 3);
+      case CM:
+	state = S_odd_CM_even_CMC4;
+	break;
+      }
+      break;
+
+    case S_odd_C4CM: /* C4 CM */  /* C4 CM C4 CM C4 CM*/
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)s;
+      case CM:
+	state = S_one_CM_odd_C4CM; /* CM C4 CM */
+	break;
+      }
+      break;
+    case S_one_CM_odd_C4CM: /* CM C4 CM */ /* CM C4 CM C4 CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)(s - 2); /* |CM C4 CM */
+      case C4:
+	state = S_even_C4CM;
+	break;
+      case CM:
+	state = S_even_CM_odd_C4CM;
+	break;
+      }
+      break;
+    case S_even_C4CM: /* C4 CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 2);  /* C4|CM C4 CM */
+      case CM:
+	state = S_one_CM_even_C4CM;
+	break;
+      }
+      break;
+    case S_one_CM_even_C4CM: /* CM C4 CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+	return (UChar *)(s - 0);  /*|CM C4 CM C4|CM */
+      case C4:
+	state = S_odd_C4CM;
+	break;
+      case CM:
+	state = S_even_CM_even_C4CM;
+	break;
+      }
+      break;
+
+    case S_even_CM_odd_C4CM: /* CM CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 0); /* |CM CM|C4|CM */
+      case CM:
+	state = S_odd_CM_odd_C4CM;
+	break;
+      }
+      break;
+    case S_odd_CM_odd_C4CM: /* CM CM CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 2); /* |CM CM|CM C4 CM */
+      case CM:
+	state = S_even_CM_odd_C4CM;
+	break;
+      }
+      break;
+
+    case S_even_CM_even_C4CM: /* CM CM C4 CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 2); /* |CM CM|C4|CM C4 CM */
+      case CM:
+	state = S_odd_CM_even_C4CM;
+	break;
+      }
+      break;
+    case S_odd_CM_even_C4CM: /* CM CM CM C4 CM C4 CM */
+      switch (GB18030_MAP[*p]) {
+      case C1:
+      case C2:
+      case C4:
+	return (UChar *)(s - 0);  /* |CM CM|CM C4 CM C4|CM */
+      case CM:
+	state = S_even_CM_even_C4CM;
+	break;
+      }
+      break;
+    }
+  }
+
+  DEBUG_GB18030(("state %d\n", state));
+  switch (state) {
+  case S_START:             return (UChar *)(s - 0);
+  case S_one_C2:            return (UChar *)(s - 0);
+  case S_one_C4:            return (UChar *)(s - 0);
+  case S_one_CM:            return (UChar *)(s - 0);
+
+  case S_odd_CM_one_CX:     return (UChar *)(s - 1);
+  case S_even_CM_one_CX:    return (UChar *)(s - 0);
+
+  case S_one_CMC4:          return (UChar *)(s - 1);
+  case S_odd_CMC4:          return (UChar *)(s - 1);
+  case S_one_C4_odd_CMC4:   return (UChar *)(s - 1);
+  case S_even_CMC4:         return (UChar *)(s - 3);
+  case S_one_C4_even_CMC4:  return (UChar *)(s - 3);
+
+  case S_odd_CM_odd_CMC4:   return (UChar *)(s - 3);
+  case S_even_CM_odd_CMC4:  return (UChar *)(s - 1);
+
+  case S_odd_CM_even_CMC4:  return (UChar *)(s - 1);
+  case S_even_CM_even_CMC4: return (UChar *)(s - 3);
+
+  case S_odd_C4CM:          return (UChar *)(s - 0);
+  case S_one_CM_odd_C4CM:   return (UChar *)(s - 2);
+  case S_even_C4CM:         return (UChar *)(s - 2);
+  case S_one_CM_even_C4CM:  return (UChar *)(s - 0);
+
+  case S_even_CM_odd_C4CM:  return (UChar *)(s - 0);
+  case S_odd_CM_odd_C4CM:   return (UChar *)(s - 2);
+  case S_even_CM_even_C4CM: return (UChar *)(s - 2);
+  case S_odd_CM_even_C4CM:  return (UChar *)(s - 0);
+  }
+
+  return (UChar* )s;  /* never come here. (escape warning) */
+}
+
+static int
+gb18030_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED, OnigEncoding enc)
+{
+  return GB18030_MAP[*s] == C1 ? TRUE : FALSE;
+}
+
+OnigEncodingDefine(gb18030, GB18030) = {
+  gb18030_mbc_enc_len,
+  "GB18030",   /* name */
+  4,          /* max enc length */
+  1,          /* min enc length */
+  onigenc_is_mbc_newline_0x0a,
+  gb18030_mbc_to_code,
+  onigenc_mb4_code_to_mbclen,
+  gb18030_code_to_mbc,
+  gb18030_mbc_case_fold,
+  onigenc_ascii_apply_all_case_fold,
+  onigenc_ascii_get_case_fold_codes_by_str,
+  onigenc_minimum_property_name_to_ctype,
+  gb18030_is_code_ctype,
+  onigenc_not_support_get_ctype_code_range,
+  gb18030_left_adjust_char_head,
+  gb18030_is_allowed_reverse_match
+};
+ENC_REPLICATE("GBK", "GB18030");
+ENC_ALIAS("CP936", "GBK");
+ENC_ALIAS("Windows-936", "GBK");