add windows-1252 caseMap

jruby · Apr 19, 2018 · bf2a941 · bf2a941
1 parent e296af2
commit bf2a941
Showing 1 changed file with 42 additions and 0 deletions.
diff --git a/src/org/jcodings/specific/Windows_1252Encoding.java b/src/org/jcodings/specific/Windows_1252Encoding.java
@@ -20,14 +20,56 @@
 package org.jcodings.specific;
 
 import org.jcodings.CaseFoldMapEncoding;
+import org.jcodings.Config;
+import org.jcodings.ISOEncoding;
 import org.jcodings.IntHolder;
+import org.jcodings.constants.CharacterType;
 
 final public class Windows_1252Encoding extends CaseFoldMapEncoding {
 
     protected Windows_1252Encoding() {
         super("Windows-1252", CP1252_CtypeTable, CP1252_ToLowerCaseTable, CP1252_CaseFoldMap, true);
     }
 
+    @Override
+    public int caseMap(IntHolder flagP, byte[] bytes, IntHolder pp, int end, byte[] to, int toP, int toEnd) {
+        int toStart = toP;
+        int flags = flagP.value;
+
+        while (pp.value < end && toP < toEnd) {
+            int code = bytes[pp.value++] & 0xff;
+            if (code == ISOEncoding.SHARP_s) {
+                if ((flags & Config.CASE_UPCASE) != 0) {
+                    flags |= Config.CASE_MODIFIED;
+                    to[toP++] = 'S';
+                    code = (flags & Config.CASE_TITLECASE) != 0 ? 's' : 'S';
+                } else if ((flags & Config.CASE_FOLD) != 0) {
+                    flags |= Config.CASE_MODIFIED;
+                    to[toP++] = 's';
+                    code = 's';
+                }
+            } else if ((CP1252_CtypeTable[code] & CharacterType.BIT_UPPER) != 0 && (flags & (Config.CASE_DOWNCASE | Config.CASE_FOLD)) != 0) {
+                flags |= Config.CASE_MODIFIED;
+                code = LowerCaseTable[code];
+            } else if (code == 0x83 || code == 0xAA || code == 0xBA || code == 0xB5) {
+            } else if ((CP1252_CtypeTable[code] & CharacterType.BIT_LOWER) != 0 && (flags & Config.CASE_UPCASE) != 0) {
+                flags |= Config.CASE_MODIFIED;
+                if (code == 0x9A || code == 0x9C || code == 0x9E)
+                    code -= 0x10;
+                else if (code == 0xFF)
+                    code -= 0x60;
+                else
+                    code -= 0x20;
+            }
+            to[toP++] = (byte)code;
+            if ((flags & Config.CASE_TITLECASE) != 0) {
+                flags ^= (Config.CASE_UPCASE | Config.CASE_DOWNCASE | Config.CASE_TITLECASE);
+            }
+        }
+        flagP.value = flags;
+        return toP - toStart;
+    }
+
     @Override
     public int mbcCaseFold(int flag, byte[]bytes, IntHolder pp, int end, byte[]lower) {
         int p = pp.value;