From 14dd8a17e84e123299dab248ef4060d817e0d7d6 Mon Sep 17 00:00:00 2001
From: duerst <duerst@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 26 Jul 2016 07:19:43 +0000
Subject: * enc/windows_1250.c, test/ruby/enc/test_case_comprehensive.rb:  
 Implement non-ASCII case conversion for Windows-1250, by Sho Koike. *
 ChangeLog: Fixed order of previous two entries.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55751 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 enc/windows_1250.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 52 insertions(+), 3 deletions(-)

(limited to 'enc')

diff --git a/enc/windows_1250.c b/enc/windows_1250.c
index aed293b4ed..47317ddaf6 100644
--- a/enc/windows_1250.c
+++ b/enc/windows_1250.c
@@ -29,6 +29,7 @@
  */
 
 #include "regenc.h"
+#include "iso_8859.h"
 
 #define ENC_CP1250_TO_LOWER_CASE(c) EncCP1250_ToLowerCaseTable[c]
 #define ENC_IS_CP1250_CTYPE(code,ctype) \
@@ -101,7 +102,7 @@ static const unsigned short EncCP1250_CtypeTable[256] = {
   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,/* E */
   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,/* F */
-  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
+  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,
 };
 
 static int
@@ -189,6 +190,55 @@ cp1250_get_case_fold_codes_by_str(OnigCaseFoldType flag,
 	     flag, p, end, items);
 }
 
+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 ((EncCP1250_CtypeTable[code] & BIT_CTYPE_UPPER)
+	     && (flags & (ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_FOLD))) {
+      flags |= ONIGENC_CASE_MODIFIED;
+      code = ENC_CP1250_TO_LOWER_CASE(code);
+    }
+    else if (code==0xB5)  ;
+    else if ((EncCP1250_CtypeTable[code]&BIT_CTYPE_LOWER)
+	     && (flags&ONIGENC_CASE_UPCASE)) {
+      flags |= ONIGENC_CASE_MODIFIED;
+      if (code==0xB9)
+	code = 0xA5;
+      else if (code==0xBE)
+	code = 0xBC;
+      else if (code >= 0x8A && code <= 0xBF && code!=0xB9)
+	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);
+}
+
 OnigEncodingDefine(windows_1250, Windows_1250) = {
   onigenc_single_byte_mbc_enc_len,
   "Windows-1250",      /* name */
@@ -208,7 +258,7 @@ OnigEncodingDefine(windows_1250, Windows_1250) = {
   onigenc_always_true_is_allowed_reverse_match,
   0,
   ONIGENC_FLAG_NONE,
-  onigenc_single_byte_ascii_only_case_map,
+  case_map,
 };
 /*
  * Name: windows-1250
@@ -218,4 +268,3 @@ OnigEncodingDefine(windows_1250, Windows_1250) = {
  * Link: http://en.wikipedia.org/wiki/Windows-1250
  */
 ENC_ALIAS("CP1250", "Windows-1250")
-
-- 
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