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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'intl/icu/source/i18n/esctrn.cpp')
-rw-r--r--intl/icu/source/i18n/esctrn.cpp181
1 files changed, 181 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/esctrn.cpp b/intl/icu/source/i18n/esctrn.cpp
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+++ b/intl/icu/source/i18n/esctrn.cpp
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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (c) 2001-2011, 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 "unicode/utf16.h"
+#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}; // "}"
+
+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, UnicodeString(TRUE, UNIPRE, 2), UnicodeString(), 16, 4, TRUE, NULL);
+}
+static Transliterator* _createEscJava(const UnicodeString& ID, Transliterator::Token /*context*/) {
+ // Java: "\\uFFFF" hex, min=4, max=4
+ return new EscapeTransliterator(ID, UnicodeString(TRUE, BS_u, 2), UnicodeString(), 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, UnicodeString(TRUE, BS_u, 2), UnicodeString(), 16, 4, TRUE,
+ new EscapeTransliterator(UnicodeString(), UnicodeString(TRUE, BS_U, 2), UnicodeString(), 16, 8, TRUE, NULL));
+}
+static Transliterator* _createEscXML(const UnicodeString& ID, Transliterator::Token /*context*/) {
+ // XML: "&#x10FFFF;" hex, min=1, max=6
+ return new EscapeTransliterator(ID, UnicodeString(TRUE, XMLPRE, 3), UnicodeString(SEMI[0]), 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, UnicodeString(TRUE, XML10PRE, 2), UnicodeString(SEMI[0]), 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, UnicodeString(TRUE, PERLPRE, 3), UnicodeString(RBRACE[0]), 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 ? U16_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