new upstream release

1 files changed, 876 insertions, 0 deletions

diff --git a/src/regenc.c b/src/regenc.c
new file mode 100644
index 0000000..01bfd1d
--- /dev/null
+++ b/src/regenc.c
@@ -0,0 +1,876 @@
+/**********************************************************************
+  regenc.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 "regint.h"
+
+OnigEncoding OnigEncDefaultCharEncoding = ONIG_ENCODING_INIT_DEFAULT;
+
+extern int
+onigenc_init(void)
+{
+  return 0;
+}
+
+extern int
+onig_initialize_encoding(OnigEncoding enc)
+{
+  if (enc->init != 0 && (enc->is_initialized() == 0)) {
+    int r = (enc->init)();
+    return r;
+  }
+
+  return 0;
+}
+
+extern OnigEncoding
+onigenc_get_default_encoding(void)
+{
+  return OnigEncDefaultCharEncoding;
+}
+
+extern int
+onigenc_set_default_encoding(OnigEncoding enc)
+{
+  OnigEncDefaultCharEncoding = enc;
+  return 0;
+}
+
+extern UChar*
+onigenc_get_right_adjust_char_head(OnigEncoding enc, const UChar* start, const UChar* s)
+{
+  UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
+  if (p < s) {
+    p += enclen(enc, p);
+  }
+  return p;
+}
+
+extern UChar*
+onigenc_get_right_adjust_char_head_with_prev(OnigEncoding enc,
+				   const UChar* start, const UChar* s, const UChar** prev)
+{
+  UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
+
+  if (p < s) {
+    if (prev) *prev = (const UChar* )p;
+    p += enclen(enc, p);
+  }
+  else {
+    if (prev) *prev = (const UChar* )NULL; /* Sorry */
+  }
+  return p;
+}
+
+extern UChar*
+onigenc_get_prev_char_head(OnigEncoding enc, const UChar* start, const UChar* s)
+{
+  if (s <= start)
+    return (UChar* )NULL;
+
+  return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1);
+}
+
+extern UChar*
+onigenc_step_back(OnigEncoding enc, const UChar* start, const UChar* s, int n)
+{
+  while (ONIG_IS_NOT_NULL(s) && n-- > 0) {
+    if (s <= start)
+      return (UChar* )NULL;
+
+    s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1);
+  }
+  return (UChar* )s;
+}
+
+extern UChar*
+onigenc_step(OnigEncoding enc, const UChar* p, const UChar* end, int n)
+{
+  UChar* q = (UChar* )p;
+  while (n-- > 0) {
+    q += ONIGENC_MBC_ENC_LEN(enc, q);
+  }
+  return (q <= end ? q : NULL);
+}
+
+extern int
+onigenc_strlen(OnigEncoding enc, const UChar* p, const UChar* end)
+{
+  int n = 0;
+  UChar* q = (UChar* )p;
+  
+  while (q < end) {
+    q += ONIGENC_MBC_ENC_LEN(enc, q);
+    n++;
+  }
+  return n;
+}
+
+extern int
+onigenc_strlen_null(OnigEncoding enc, const UChar* s)
+{
+  int n = 0;
+  UChar* p = (UChar* )s;
+  
+  while (1) {
+    if (*p == '\0') {
+      UChar* q;
+      int len = ONIGENC_MBC_MINLEN(enc);
+
+      if (len == 1) return n;
+      q = p + 1;
+      while (len > 1) {
+        if (*q != '\0') break;
+        q++;
+        len--;
+      }
+      if (len == 1) return n;
+    }
+    p += ONIGENC_MBC_ENC_LEN(enc, p);
+    n++;
+  }
+}
+
+extern int
+onigenc_str_bytelen_null(OnigEncoding enc, const UChar* s)
+{
+  UChar* start = (UChar* )s;
+  UChar* p = (UChar* )s;
+
+  while (1) {
+    if (*p == '\0') {
+      UChar* q;
+      int len = ONIGENC_MBC_MINLEN(enc);
+
+      if (len == 1) return (int )(p - start);
+      q = p + 1;
+      while (len > 1) {
+        if (*q != '\0') break;
+        q++;
+        len--;
+      }
+      if (len == 1) return (int )(p - start);
+    }
+    p += ONIGENC_MBC_ENC_LEN(enc, p);
+  }
+}
+
+const UChar OnigEncAsciiToLowerCaseTable[] = {
+  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+  '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+  '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+  '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+  '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+  '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+  '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+  '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+  '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+  '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+  '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+  '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+  '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
+  '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
+  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+
+#ifdef USE_UPPER_CASE_TABLE
+const UChar OnigEncAsciiToUpperCaseTable[256] = {
+  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+  '\100', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
+  '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
+  '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
+  '\130', '\131', '\132', '\133', '\134', '\135', '\136', '\137',
+  '\140', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
+  '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
+  '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
+  '\130', '\131', '\132', '\173', '\174', '\175', '\176', '\177',
+  '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+  '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+  '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+  '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+  '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+  '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+  '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+  '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
+  '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
+  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+#endif
+
+const unsigned short OnigEncAsciiCtypeTable[256] = {
+  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
+  0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
+  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
+  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
+  0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
+  0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
+  0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
+  0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
+  0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
+  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
+  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
+  0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
+  0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
+  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
+  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
+  0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+  0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+};
+
+const UChar OnigEncISO_8859_1_ToLowerCaseTable[256] = {
+  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+  '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+  '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+  '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+  '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+  '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+  '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+  '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+  '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+  '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\327',
+  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
+  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
+};
+
+#ifdef USE_UPPER_CASE_TABLE
+const UChar OnigEncISO_8859_1_ToUpperCaseTable[256] = {
+  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+  '\100', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
+  '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
+  '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
+  '\130', '\131', '\132', '\133', '\134', '\135', '\136', '\137',
+  '\140', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
+  '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
+  '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
+  '\130', '\131', '\132', '\173', '\174', '\175', '\176', '\177',
+  '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+  '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+  '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+  '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+  '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+  '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+  '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+  '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
+  '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
+  '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+  '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+  '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\367',
+  '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\377',
+};
+#endif
+
+extern void
+onigenc_set_default_caseconv_table(const UChar* table ARG_UNUSED)
+{
+  /* nothing */
+  /* obsoleted. */
+}
+
+extern UChar*
+onigenc_get_left_adjust_char_head(OnigEncoding enc, const UChar* start, const UChar* s)
+{
+  return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
+}
+
+const OnigPairCaseFoldCodes OnigAsciiLowerMap[] = {
+  { 0x41, 0x61 },
+  { 0x42, 0x62 },
+  { 0x43, 0x63 },
+  { 0x44, 0x64 },
+  { 0x45, 0x65 },
+  { 0x46, 0x66 },
+  { 0x47, 0x67 },
+  { 0x48, 0x68 },
+  { 0x49, 0x69 },
+  { 0x4a, 0x6a },
+  { 0x4b, 0x6b },
+  { 0x4c, 0x6c },
+  { 0x4d, 0x6d },
+  { 0x4e, 0x6e },
+  { 0x4f, 0x6f },
+  { 0x50, 0x70 },
+  { 0x51, 0x71 },
+  { 0x52, 0x72 },
+  { 0x53, 0x73 },
+  { 0x54, 0x74 },
+  { 0x55, 0x75 },
+  { 0x56, 0x76 },
+  { 0x57, 0x77 },
+  { 0x58, 0x78 },
+  { 0x59, 0x79 },
+  { 0x5a, 0x7a }
+};
+
+extern int
+onigenc_ascii_apply_all_case_fold(OnigCaseFoldType flag ARG_UNUSED,
+				  OnigApplyAllCaseFoldFunc f, void* arg)
+{
+  OnigCodePoint code;
+  int i, r;
+
+  for (i = 0;
+       i < (int )(sizeof(OnigAsciiLowerMap)/sizeof(OnigPairCaseFoldCodes));
+       i++) {
+    code = OnigAsciiLowerMap[i].to;
+    r = (*f)(OnigAsciiLowerMap[i].from, &code, 1, arg);
+    if (r != 0) return r;
+
+    code = OnigAsciiLowerMap[i].from;
+    r = (*f)(OnigAsciiLowerMap[i].to, &code, 1, arg);
+    if (r != 0) return r;
+  }
+
+  return 0;
+}
+
+extern int
+onigenc_ascii_get_case_fold_codes_by_str(OnigCaseFoldType flag ARG_UNUSED,
+	 const OnigUChar* p, const OnigUChar* end ARG_UNUSED,
+	 OnigCaseFoldCodeItem items[])
+{
+  if (0x41 <= *p && *p <= 0x5a) {
+    items[0].byte_len = 1;
+    items[0].code_len = 1;
+    items[0].code[0] = (OnigCodePoint )(*p + 0x20);
+    return 1;
+  }
+  else if (0x61 <= *p && *p <= 0x7a) {
+    items[0].byte_len = 1;
+    items[0].code_len = 1;
+    items[0].code[0] = (OnigCodePoint )(*p - 0x20);
+    return 1;
+  }
+  else
+    return 0;
+}
+
+static int
+ss_apply_all_case_fold(OnigCaseFoldType flag ARG_UNUSED,
+		       OnigApplyAllCaseFoldFunc f, void* arg)
+{
+  static OnigCodePoint ss[] = { 0x73, 0x73 };
+
+  return (*f)((OnigCodePoint )0xdf, ss, 2, arg);
+}
+
+extern int
+onigenc_apply_all_case_fold_with_map(int map_size,
+    const OnigPairCaseFoldCodes map[],
+    int ess_tsett_flag, OnigCaseFoldType flag,
+    OnigApplyAllCaseFoldFunc f, void* arg)
+{
+  OnigCodePoint code;
+  int i, r;
+
+  r = onigenc_ascii_apply_all_case_fold(flag, f, arg);
+  if (r != 0) return r;
+
+  for (i = 0; i < map_size; i++) {
+    code = map[i].to;
+    r = (*f)(map[i].from, &code, 1, arg);
+    if (r != 0) return r;
+
+    code = map[i].from;
+    r = (*f)(map[i].to, &code, 1, arg);
+    if (r != 0) return r;
+  }
+
+  if (ess_tsett_flag != 0)
+    return ss_apply_all_case_fold(flag, f, arg);
+
+  return 0;
+}
+
+extern int
+onigenc_get_case_fold_codes_by_str_with_map(int map_size,
+    const OnigPairCaseFoldCodes map[],
+    int ess_tsett_flag, OnigCaseFoldType flag ARG_UNUSED,
+    const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
+{
+  if (0x41 <= *p && *p <= 0x5a) {
+    items[0].byte_len = 1;
+    items[0].code_len = 1;
+    items[0].code[0] = (OnigCodePoint )(*p + 0x20);
+    if (*p == 0x53 && ess_tsett_flag != 0 && end > p + 1
+	&& (*(p+1) == 0x53 || *(p+1) == 0x73)) {
+      /* SS */
+      items[1].byte_len = 2;
+      items[1].code_len = 1;
+      items[1].code[0] = (OnigCodePoint )0xdf;
+      return 2;
+    }
+    else
+      return 1;
+  }
+  else if (0x61 <= *p && *p <= 0x7a) {
+    items[0].byte_len = 1;
+    items[0].code_len = 1;
+    items[0].code[0] = (OnigCodePoint )(*p - 0x20);
+    if (*p == 0x73 && ess_tsett_flag != 0 && end > p + 1
+	&& (*(p+1) == 0x73 || *(p+1) == 0x53)) {
+      /* ss */
+      items[1].byte_len = 2;
+      items[1].code_len = 1;
+      items[1].code[0] = (OnigCodePoint )0xdf;
+      return 2;
+    }
+    else
+      return 1;
+  }
+  else if (*p == 0xdf && ess_tsett_flag != 0) {
+    items[0].byte_len = 1;
+    items[0].code_len = 2;
+    items[0].code[0] = (OnigCodePoint )'s';
+    items[0].code[1] = (OnigCodePoint )'s';
+
+    items[1].byte_len = 1;
+    items[1].code_len = 2;
+    items[1].code[0] = (OnigCodePoint )'S';
+    items[1].code[1] = (OnigCodePoint )'S';
+
+    items[2].byte_len = 1;
+    items[2].code_len = 2;
+    items[2].code[0] = (OnigCodePoint )'s';
+    items[2].code[1] = (OnigCodePoint )'S';
+
+    items[3].byte_len = 1;
+    items[3].code_len = 2;
+    items[3].code[0] = (OnigCodePoint )'S';
+    items[3].code[1] = (OnigCodePoint )'s';
+
+    return 4;
+  }
+  else {
+    int i;
+
+    for (i = 0; i < map_size; i++) {
+      if (*p == map[i].from) {
+	items[0].byte_len = 1;
+	items[0].code_len = 1;
+	items[0].code[0] = map[i].to;
+	return 1;
+      }
+      else if (*p == map[i].to) {
+	items[0].byte_len = 1;
+	items[0].code_len = 1;
+	items[0].code[0] = map[i].from;
+	return 1;
+      }
+    }
+  }
+
+  return 0;
+}
+
+
+extern int
+onigenc_not_support_get_ctype_code_range(OnigCtype ctype ARG_UNUSED,
+	 OnigCodePoint* sb_out ARG_UNUSED,
+	 const OnigCodePoint* ranges[] ARG_UNUSED)
+{
+  return ONIG_NO_SUPPORT_CONFIG;
+}
+
+extern int
+onigenc_is_mbc_newline_0x0a(const UChar* p, const UChar* end)
+{
+  if (p < end) {
+    if (*p == 0x0a) return 1;
+  }
+  return 0;
+}
+
+/* for single byte encodings */
+extern int
+onigenc_ascii_mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED, const UChar** p,
+	    const UChar*end ARG_UNUSED, UChar* lower)
+{
+  *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(**p);
+
+  (*p)++;
+  return 1; /* return byte length of converted char to lower */
+}
+
+#if 0
+extern int
+onigenc_ascii_is_mbc_ambiguous(OnigCaseFoldType flag,
+			       const UChar** pp, const UChar* end)
+{
+  const UChar* p = *pp;
+
+  (*pp)++;
+  return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
+}
+#endif
+
+extern int
+onigenc_single_byte_mbc_enc_len(const UChar* p ARG_UNUSED)
+{
+  return 1;
+}
+
+extern OnigCodePoint
+onigenc_single_byte_mbc_to_code(const UChar* p, const UChar* end ARG_UNUSED)
+{
+  return (OnigCodePoint )(*p);
+}
+
+extern int
+onigenc_single_byte_code_to_mbclen(OnigCodePoint code ARG_UNUSED)
+{
+  return (code < 0x100 ? 1 : ONIGERR_INVALID_CODE_POINT_VALUE);
+}
+
+extern int
+onigenc_single_byte_code_to_mbc(OnigCodePoint code, UChar *buf)
+{
+  *buf = (UChar )(code & 0xff);
+  return 1;
+}
+
+extern UChar*
+onigenc_single_byte_left_adjust_char_head(const UChar* start ARG_UNUSED,
+					  const UChar* s)
+{
+  return (UChar* )s;
+}
+
+extern int
+onigenc_always_true_is_allowed_reverse_match(const UChar* s   ARG_UNUSED,
+					     const UChar* end ARG_UNUSED)
+{
+  return TRUE;
+}
+
+extern int
+onigenc_always_false_is_allowed_reverse_match(const UChar* s   ARG_UNUSED,
+					      const UChar* end ARG_UNUSED)
+{
+  return FALSE;
+}
+
+extern OnigCodePoint
+onigenc_mbn_mbc_to_code(OnigEncoding enc, const UChar* p, const UChar* end)
+{
+  int c, i, len;
+  OnigCodePoint n;
+
+  len = enclen(enc, p);
+  n = (OnigCodePoint )(*p++);
+  if (len == 1) return n;
+
+  for (i = 1; i < len; i++) {
+    if (p >= end) break;
+    c = *p++;
+    n <<= 8;  n += c;
+  }
+  return n;
+}
+
+extern int
+onigenc_mbn_mbc_case_fold(OnigEncoding enc, OnigCaseFoldType flag ARG_UNUSED,
+                          const UChar** pp, const UChar* end ARG_UNUSED,
+			  UChar* lower)
+{
+  int len;
+  const UChar *p = *pp;
+
+  if (ONIGENC_IS_MBC_ASCII(p)) {
+    *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
+    (*pp)++;
+    return 1;
+  }
+  else {
+    int i;
+
+    len = enclen(enc, p);
+    for (i = 0; i < len; i++) {
+      *lower++ = *p++;
+    }
+    (*pp) += len;
+    return len; /* return byte length of converted to lower char */
+  }
+}
+
+#if 0
+extern int
+onigenc_mbn_is_mbc_ambiguous(OnigEncoding enc, OnigCaseFoldType flag,
+                             const UChar** pp, const UChar* end)
+{
+  const UChar* p = *pp;
+
+  if (ONIGENC_IS_MBC_ASCII(p)) {
+    (*pp)++;
+    return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
+  }
+
+  (*pp) += enclen(enc, p);
+  return FALSE;
+}
+#endif
+
+extern int
+onigenc_mb2_code_to_mbclen(OnigCodePoint code)
+{
+  if ((code & 0xff00) != 0) return 2;
+  else return 1;
+}
+
+extern int
+onigenc_mb4_code_to_mbclen(OnigCodePoint code)
+{
+       if ((code & 0xff000000) != 0) return 4;
+  else if ((code & 0xff0000) != 0) return 3;
+  else if ((code & 0xff00) != 0) return 2;
+  else return 1;
+}
+
+extern int
+onigenc_mb2_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
+{
+  UChar *p = buf;
+
+  if ((code & 0xff00) != 0) {
+    *p++ = (UChar )((code >>  8) & 0xff);
+  }
+  *p++ = (UChar )(code & 0xff);
+
+#if 1
+  if (enclen(enc, buf) != (p - buf))
+    return ONIGERR_INVALID_CODE_POINT_VALUE;
+#endif
+  return p - buf;
+}
+
+extern int
+onigenc_mb4_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
+{
+  UChar *p = buf;
+
+  if ((code & 0xff000000) != 0) {
+    *p++ = (UChar )((code >> 24) & 0xff);
+  }
+  if ((code & 0xff0000) != 0 || p != buf) {
+    *p++ = (UChar )((code >> 16) & 0xff);
+  }
+  if ((code & 0xff00) != 0 || p != buf) {
+    *p++ = (UChar )((code >> 8) & 0xff);
+  }
+  *p++ = (UChar )(code & 0xff);
+
+#if 1
+  if (enclen(enc, buf) != (p - buf))
+    return ONIGERR_INVALID_CODE_POINT_VALUE;
+#endif
+  return p - buf;
+}
+
+extern int
+onigenc_minimum_property_name_to_ctype(OnigEncoding enc, UChar* p, UChar* end)
+{
+  static PosixBracketEntryType PBS[] = {
+    { (UChar* )"Alnum",  ONIGENC_CTYPE_ALNUM,  5 },
+    { (UChar* )"Alpha",  ONIGENC_CTYPE_ALPHA,  5 },
+    { (UChar* )"Blank",  ONIGENC_CTYPE_BLANK,  5 },
+    { (UChar* )"Cntrl",  ONIGENC_CTYPE_CNTRL,  5 },
+    { (UChar* )"Digit",  ONIGENC_CTYPE_DIGIT,  5 },
+    { (UChar* )"Graph",  ONIGENC_CTYPE_GRAPH,  5 },
+    { (UChar* )"Lower",  ONIGENC_CTYPE_LOWER,  5 },
+    { (UChar* )"Print",  ONIGENC_CTYPE_PRINT,  5 },
+    { (UChar* )"Punct",  ONIGENC_CTYPE_PUNCT,  5 },
+    { (UChar* )"Space",  ONIGENC_CTYPE_SPACE,  5 },
+    { (UChar* )"Upper",  ONIGENC_CTYPE_UPPER,  5 },
+    { (UChar* )"XDigit", ONIGENC_CTYPE_XDIGIT, 6 },
+    { (UChar* )"ASCII",  ONIGENC_CTYPE_ASCII,  5 },
+    { (UChar* )"Word",   ONIGENC_CTYPE_WORD,   4 },
+    { (UChar* )NULL, -1, 0 }
+  };
+
+  PosixBracketEntryType *pb;
+  int len;
+
+  len = onigenc_strlen(enc, p, end);
+  for (pb = PBS; IS_NOT_NULL(pb->name); pb++) {
+    if (len == pb->len &&
+        onigenc_with_ascii_strncmp(enc, p, end, pb->name, pb->len) == 0)
+      return pb->ctype;
+  }
+
+  return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
+}
+
+extern int
+onigenc_mb2_is_code_ctype(OnigEncoding enc, OnigCodePoint code,
+			  unsigned int ctype)
+{
+  if (code < 128)
+    return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
+  else {
+    if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) {
+      return (ONIGENC_CODE_TO_MBCLEN(enc, code) > 1 ? TRUE : FALSE);
+    }
+  }
+
+  return FALSE;
+}
+
+extern int
+onigenc_mb4_is_code_ctype(OnigEncoding enc, OnigCodePoint code,
+			  unsigned int ctype)
+{
+  if (code < 128)
+    return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
+  else {
+    if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) {
+      return (ONIGENC_CODE_TO_MBCLEN(enc, code) > 1 ? TRUE : FALSE);
+    }
+  }
+
+  return FALSE;
+}
+
+extern int
+onigenc_with_ascii_strncmp(OnigEncoding enc, const UChar* p, const UChar* end,
+                           const UChar* sascii /* ascii */, int n)
+{
+  int x, c;
+
+  while (n-- > 0) {
+    if (p >= end) return (int )(*sascii);
+
+    c = (int )ONIGENC_MBC_TO_CODE(enc, p, end);
+    x = *sascii - c;
+    if (x) return x;
+
+    sascii++;
+    p += enclen(enc, p);
+  }
+  return 0;
+}
+
+extern int
+onig_codes_cmp(OnigCodePoint a[], OnigCodePoint b[], int n)
+{
+  int i;
+
+  for (i = 0; i < n; i++) {
+    if (a[i] != b[i])
+      return -1;
+  }
+
+  return 0;
+}
+
+extern int
+onig_codes_byte_at(OnigCodePoint codes[], int at)
+{
+  int index;
+  int b;
+  OnigCodePoint code;
+
+  index = at / 3;
+  b     = at % 3;
+  code = codes[index];
+
+  return ((code >> ((2 - b) * 8)) & 0xff);
+}