Index: icu46/source/common/unifilt.cpp |
=================================================================== |
--- icu46/source/common/unifilt.cpp (revision 0) |
+++ icu46/source/common/unifilt.cpp (revision 0) |
@@ -0,0 +1,68 @@ |
+/* |
+********************************************************************** |
+* Copyright (c) 2001-2004, International Business Machines |
+* Corporation and others. All Rights Reserved. |
+********************************************************************** |
+* Date Name Description |
+* 07/18/01 aliu Creation. |
+********************************************************************** |
+*/ |
+ |
+#include "unicode/unifilt.h" |
+#include "unicode/rep.h" |
+ |
+U_NAMESPACE_BEGIN |
+UOBJECT_DEFINE_ABSTRACT_RTTI_IMPLEMENTATION(UnicodeFilter) |
+ |
+ |
+/* Define this here due to the lack of another file. |
+ It can't be defined in the header */ |
+UnicodeMatcher::~UnicodeMatcher() {} |
+ |
+UnicodeFilter::~UnicodeFilter() {} |
+ |
+/** |
+ * UnicodeFunctor API. Cast 'this' to a UnicodeMatcher* pointer |
+ * and return the pointer. |
+ */ |
+UnicodeMatcher* UnicodeFilter::toMatcher() const { |
+ return (UnicodeMatcher*) this; |
+} |
+ |
+void UnicodeFilter::setData(const TransliterationRuleData*) {} |
+ |
+/** |
+ * Default implementation of UnicodeMatcher::matches() for Unicode |
+ * filters. Matches a single code point at offset (either one or |
+ * two 16-bit code units). |
+ */ |
+UMatchDegree UnicodeFilter::matches(const Replaceable& text, |
+ int32_t& offset, |
+ int32_t limit, |
+ UBool incremental) { |
+ UChar32 c; |
+ if (offset < limit && |
+ contains(c = text.char32At(offset))) { |
+ offset += UTF_CHAR_LENGTH(c); |
+ return U_MATCH; |
+ } |
+ if (offset > limit && |
+ contains(c = text.char32At(offset))) { |
+ // Backup offset by 1, unless the preceding character is a |
+ // surrogate pair -- then backup by 2 (keep offset pointing at |
+ // the lead surrogate). |
+ --offset; |
+ if (offset >= 0) { |
+ offset -= UTF_CHAR_LENGTH(text.char32At(offset)) - 1; |
+ } |
+ return U_MATCH; |
+ } |
+ if (incremental && offset == limit) { |
+ return U_PARTIAL_MATCH; |
+ } |
+ return U_MISMATCH; |
+} |
+ |
+U_NAMESPACE_END |
+ |
+//eof |
Property changes on: icu46/source/common/unifilt.cpp |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |