Index: icu46/source/i18n/esctrn.cpp |
=================================================================== |
--- icu46/source/i18n/esctrn.cpp (revision 0) |
+++ icu46/source/i18n/esctrn.cpp (revision 0) |
@@ -0,0 +1,179 @@ |
+/* |
+********************************************************************** |
+* Copyright (c) 2001-2006, International Business Machines |
+* Corporation and others. All Rights Reserved. |
+********************************************************************** |
+* Date Name Description |
+* 11/19/2001 aliu Creation. |
+********************************************************************** |
+*/ |
+ |
+#include "unicode/utypes.h" |
+ |
+#if !UCONFIG_NO_TRANSLITERATION |
+ |
+#include "esctrn.h" |
+#include "util.h" |
+ |
+U_NAMESPACE_BEGIN |
+ |
+static const UChar UNIPRE[] = {85,43,0}; // "U+" |
+static const UChar BS_u[] = {92,117,0}; // "\\u" |
+static const UChar BS_U[] = {92,85,0}; // "\\U" |
+static const UChar XMLPRE[] = {38,35,120,0}; // "&#x" |
+static const UChar XML10PRE[] = {38,35,0}; // "&#" |
+static const UChar PERLPRE[] = {92,120,123,0}; // "\\x{" |
+static const UChar SEMI[] = {59,0}; // ";" |
+static const UChar RBRACE[] = {125,0}; // "}" |
+static const UChar EMPTY[] = {0}; // "" |
+ |
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EscapeTransliterator) |
+ |
+/** |
+ * Factory methods |
+ */ |
+static Transliterator* _createEscUnicode(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // Unicode: "U+10FFFF" hex, min=4, max=6 |
+ return new EscapeTransliterator(ID, UNIPRE, EMPTY, 16, 4, TRUE, NULL); |
+} |
+static Transliterator* _createEscJava(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // Java: "\\uFFFF" hex, min=4, max=4 |
+ return new EscapeTransliterator(ID, BS_u, EMPTY, 16, 4, FALSE, NULL); |
+} |
+static Transliterator* _createEscC(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // C: "\\uFFFF" hex, min=4, max=4; \\U0010FFFF hex, min=8, max=8 |
+ return new EscapeTransliterator(ID, BS_u, EMPTY, 16, 4, TRUE, |
+ new EscapeTransliterator(EMPTY, BS_U, EMPTY, 16, 8, TRUE, NULL)); |
+} |
+static Transliterator* _createEscXML(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // XML: "" hex, min=1, max=6 |
+ return new EscapeTransliterator(ID, XMLPRE, SEMI, 16, 1, TRUE, NULL); |
+} |
+static Transliterator* _createEscXML10(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // XML10: "&1114111;" dec, min=1, max=7 (not really "Any-Hex") |
+ return new EscapeTransliterator(ID, XML10PRE, SEMI, 10, 1, TRUE, NULL); |
+} |
+static Transliterator* _createEscPerl(const UnicodeString& ID, Transliterator::Token /*context*/) { |
+ // Perl: "\\x{263A}" hex, min=1, max=6 |
+ return new EscapeTransliterator(ID, PERLPRE, RBRACE, 16, 1, TRUE, NULL); |
+} |
+ |
+/** |
+ * Registers standard variants with the system. Called by |
+ * Transliterator during initialization. |
+ */ |
+void EscapeTransliterator::registerIDs() { |
+ Token t = integerToken(0); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/Unicode"), _createEscUnicode, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/Java"), _createEscJava, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/C"), _createEscC, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/XML"), _createEscXML, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/XML10"), _createEscXML10, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex/Perl"), _createEscPerl, t); |
+ |
+ Transliterator::_registerFactory(UNICODE_STRING_SIMPLE("Any-Hex"), _createEscJava, t); |
+} |
+ |
+/** |
+ * Constructs an escape transliterator with the given ID and |
+ * parameters. See the class member documentation for details. |
+ */ |
+EscapeTransliterator::EscapeTransliterator(const UnicodeString& newID, |
+ const UnicodeString& _prefix, const UnicodeString& _suffix, |
+ int32_t _radix, int32_t _minDigits, |
+ UBool _grokSupplementals, |
+ EscapeTransliterator* adoptedSupplementalHandler) : |
+ Transliterator(newID, NULL) |
+{ |
+ this->prefix = _prefix; |
+ this->suffix = _suffix; |
+ this->radix = _radix; |
+ this->minDigits = _minDigits; |
+ this->grokSupplementals = _grokSupplementals; |
+ this->supplementalHandler = adoptedSupplementalHandler; |
+} |
+ |
+/** |
+ * Copy constructor. |
+ */ |
+EscapeTransliterator::EscapeTransliterator(const EscapeTransliterator& o) : |
+ Transliterator(o), |
+ prefix(o.prefix), |
+ suffix(o.suffix), |
+ radix(o.radix), |
+ minDigits(o.minDigits), |
+ grokSupplementals(o.grokSupplementals) { |
+ supplementalHandler = (o.supplementalHandler != 0) ? |
+ new EscapeTransliterator(*o.supplementalHandler) : NULL; |
+} |
+ |
+EscapeTransliterator::~EscapeTransliterator() { |
+ delete supplementalHandler; |
+} |
+ |
+/** |
+ * Transliterator API. |
+ */ |
+Transliterator* EscapeTransliterator::clone() const { |
+ return new EscapeTransliterator(*this); |
+} |
+ |
+/** |
+ * Implements {@link Transliterator#handleTransliterate}. |
+ */ |
+void EscapeTransliterator::handleTransliterate(Replaceable& text, |
+ UTransPosition& pos, |
+ UBool /*isIncremental*/) const |
+{ |
+ /* TODO: Verify that isIncremental can be ignored */ |
+ int32_t start = pos.start; |
+ int32_t limit = pos.limit; |
+ |
+ UnicodeString buf(prefix); |
+ int32_t prefixLen = prefix.length(); |
+ UBool redoPrefix = FALSE; |
+ |
+ while (start < limit) { |
+ int32_t c = grokSupplementals ? text.char32At(start) : text.charAt(start); |
+ int32_t charLen = grokSupplementals ? UTF_CHAR_LENGTH(c) : 1; |
+ |
+ if ((c & 0xFFFF0000) != 0 && supplementalHandler != NULL) { |
+ buf.truncate(0); |
+ buf.append(supplementalHandler->prefix); |
+ ICU_Utility::appendNumber(buf, c, supplementalHandler->radix, |
+ supplementalHandler->minDigits); |
+ buf.append(supplementalHandler->suffix); |
+ redoPrefix = TRUE; |
+ } else { |
+ if (redoPrefix) { |
+ buf.truncate(0); |
+ buf.append(prefix); |
+ redoPrefix = FALSE; |
+ } else { |
+ buf.truncate(prefixLen); |
+ } |
+ ICU_Utility::appendNumber(buf, c, radix, minDigits); |
+ buf.append(suffix); |
+ } |
+ |
+ text.handleReplaceBetween(start, start + charLen, buf); |
+ start += buf.length(); |
+ limit += buf.length() - charLen; |
+ } |
+ |
+ pos.contextLimit += limit - pos.limit; |
+ pos.limit = limit; |
+ pos.start = start; |
+} |
+ |
+U_NAMESPACE_END |
+ |
+#endif /* #if !UCONFIG_NO_TRANSLITERATION */ |
+ |
+//eof |
Property changes on: icu46/source/i18n/esctrn.cpp |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |