From 470fbe5f7a00c96ac4567f5c22bb27969c906fba Mon Sep 17 00:00:00 2001
From: duerst <duerst@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 13 Jul 2016 00:02:34 +0000
Subject: * enc/iso_8859_3.c, test/ruby/enc/test_case_comprehensive.rb:  
 Implement non-ASCII case conversion for ISO-8859-3, by Takuya Miyamoto. *
 test/ruby/enc/test_case_comprehensive.rb: Extend special treatment   for
 Turkic. * enc/iso_8859_3.c: Exclude dotless i/I with dot from
 case-insensitive   matching because they are not a case pair.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 enc/iso_8859_3.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

(limited to 'enc/iso_8859_3.c')

diff --git a/enc/iso_8859_3.c b/enc/iso_8859_3.c
index e6dee1042a..a37a3cf0a7 100644
--- a/enc/iso_8859_3.c
+++ b/enc/iso_8859_3.c
@@ -56,7 +56,7 @@ static const UChar EncISO_8859_3_ToLowerCaseTable[256] = {
   '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
   '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
   '\240', '\261', '\242', '\243', '\244', '\245', '\266', '\247',
-  '\250', '\271', '\272', '\273', '\274', '\255', '\256', '\277',
+  '\250', '\151', '\272', '\273', '\274', '\255', '\256', '\277',
   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
   '\340', '\341', '\342', '\303', '\344', '\345', '\346', '\347',
@@ -161,7 +161,7 @@ is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSE
 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
  { 0xa1, 0xb1 },
  { 0xa6, 0xb6 },
- { 0xa9, 0xb9 },
+ /*{ 0xa9, 0xb9 }, exclude dotless i/I with dot; not a case pair */
  { 0xaa, 0xba },
  { 0xab, 0xbb },
  { 0xac, 0xbc },
@@ -220,6 +220,64 @@ get_case_fold_codes_by_str(OnigCaseFoldType flag,
 	     flag, p, end, items);
 }
 
+#ifdef ONIG_CASE_MAPPING
+#define DOTLESS_i        (0xB9)
+#define I_WITH_DOT_ABOVE (0xA9)
+static int
+case_map (OnigCaseFoldType* flagP, const OnigUChar** pp,
+					 const OnigUChar* end, OnigUChar* to, OnigUChar* to_end,
+					 const struct OnigEncodingTypeST* enc)
+{
+  OnigCodePoint code;
+  OnigUChar *to_start = to;
+  OnigCaseFoldType flags = *flagP;
+
+  while (*pp<end && to<to_end) {
+    code = *(*pp)++;
+    if (code==SHARP_s) {
+      if (flags&ONIGENC_CASE_UPCASE) {
+	flags |= ONIGENC_CASE_MODIFIED;
+	*to++ = 'S';
+	code = (flags&ONIGENC_CASE_TITLECASE) ? 's' : 'S';
+      }
+      else if (flags&ONIGENC_CASE_FOLD) {
+	flags |= ONIGENC_CASE_MODIFIED;
+	*to++ = 's';
+	code = 's';
+      }
+    }
+    else if (code==0xB5) ;
+    else if ((EncISO_8859_3_CtypeTable[code] & BIT_CTYPE_UPPER)
+	     && (flags & (ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_FOLD))) {
+      flags |= ONIGENC_CASE_MODIFIED;
+      if (code=='I')
+        code = flags&ONIGENC_CASE_FOLD_TURKISH_AZERI ? DOTLESS_i : 'i';
+      else
+	code = ENC_ISO_8859_3_TO_LOWER_CASE(code);
+    }
+    else if ((EncISO_8859_3_CtypeTable[code]&BIT_CTYPE_LOWER)
+	     && (flags&ONIGENC_CASE_UPCASE)) {
+      flags |= ONIGENC_CASE_MODIFIED;
+      if (code=='i')
+        code = flags&ONIGENC_CASE_FOLD_TURKISH_AZERI ? I_WITH_DOT_ABOVE : 'I';
+      else if (code==DOTLESS_i)
+        code = 'I';
+      else if (code>=0xB0 && code<=0xBF ) {
+	code -= 0x10;
+      }
+      else {
+	code -= 0x20;
+      }
+    }
+    *to++ = code;
+    if (flags&ONIGENC_CASE_TITLECASE)  /* switch from titlecase to lowercase for capitalize */
+      flags ^= (ONIGENC_CASE_UPCASE|ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_TITLECASE);
+  }
+  *flagP = flags;
+  return (int)(to-to_start);
+}
+#endif   /* ONIG_CASE_MAPPING */
+
 OnigEncodingDefine(iso_8859_3, ISO_8859_3) = {
   onigenc_single_byte_mbc_enc_len,
   "ISO-8859-3",  /* name */
@@ -240,7 +298,7 @@ OnigEncodingDefine(iso_8859_3, ISO_8859_3) = {
   0,
   ONIGENC_FLAG_NONE,
 #ifdef ONIG_CASE_MAPPING
-  onigenc_single_byte_ascii_only_case_map,
+  case_map,
 #endif   /* ONIG_CASE_MAPPING */
 };
 ENC_ALIAS("ISO8859-3", "ISO-8859-3")
-- 
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