[Complex Text Layouts] Add third-party TextServer dependencies (ICU, HarfBuzz, Graphite).

1 files changed, 119 insertions, 0 deletions

diff --git a/thirdparty/icu4c/common/schriter.cpp b/thirdparty/icu4c/common/schriter.cpp
new file mode 100644
index 0000000000..17b68aee9d
--- /dev/null
+++ b/thirdparty/icu4c/common/schriter.cpp
@@ -0,0 +1,119 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+******************************************************************************
+* Copyright (C) 1998-2012, International Business Machines Corporation and
+* others. All Rights Reserved.
+******************************************************************************
+*
+* File schriter.cpp
+*
+* Modification History:
+*
+*   Date        Name        Description
+*  05/05/99     stephen     Cleaned up.
+******************************************************************************
+*/
+
+#include "utypeinfo.h"  // for 'typeid' to work
+
+#include "unicode/chariter.h"
+#include "unicode/schriter.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(StringCharacterIterator)
+
+StringCharacterIterator::StringCharacterIterator()
+  : UCharCharacterIterator(),
+    text()
+{
+  // NEVER DEFAULT CONSTRUCT!
+}
+
+StringCharacterIterator::StringCharacterIterator(const UnicodeString& textStr)
+  : UCharCharacterIterator(textStr.getBuffer(), textStr.length()),
+    text(textStr)
+{
+    // we had set the input parameter's array, now we need to set our copy's array
+    UCharCharacterIterator::text = this->text.getBuffer();
+}
+
+StringCharacterIterator::StringCharacterIterator(const UnicodeString& textStr,
+                                                 int32_t textPos)
+  : UCharCharacterIterator(textStr.getBuffer(), textStr.length(), textPos),
+    text(textStr)
+{
+    // we had set the input parameter's array, now we need to set our copy's array
+    UCharCharacterIterator::text = this->text.getBuffer();
+}
+
+StringCharacterIterator::StringCharacterIterator(const UnicodeString& textStr,
+                                                 int32_t textBegin,
+                                                 int32_t textEnd,
+                                                 int32_t textPos)
+  : UCharCharacterIterator(textStr.getBuffer(), textStr.length(), textBegin, textEnd, textPos),
+    text(textStr)
+{
+    // we had set the input parameter's array, now we need to set our copy's array
+    UCharCharacterIterator::text = this->text.getBuffer();
+}
+
+StringCharacterIterator::StringCharacterIterator(const StringCharacterIterator& that)
+  : UCharCharacterIterator(that),
+    text(that.text)
+{
+    // we had set the input parameter's array, now we need to set our copy's array
+    UCharCharacterIterator::text = this->text.getBuffer();
+}
+
+StringCharacterIterator::~StringCharacterIterator() {
+}
+
+StringCharacterIterator&
+StringCharacterIterator::operator=(const StringCharacterIterator& that) {
+    UCharCharacterIterator::operator=(that);
+    text = that.text;
+    // we had set the input parameter's array, now we need to set our copy's array
+    UCharCharacterIterator::text = this->text.getBuffer();
+    return *this;
+}
+
+UBool
+StringCharacterIterator::operator==(const ForwardCharacterIterator& that) const {
+    if (this == &that) {
+        return TRUE;
+    }
+
+    // do not call UCharCharacterIterator::operator==()
+    // because that checks for array pointer equality
+    // while we compare UnicodeString objects
+
+    if (typeid(*this) != typeid(that)) {
+        return FALSE;
+    }
+
+    StringCharacterIterator&    realThat = (StringCharacterIterator&)that;
+
+    return text == realThat.text
+        && pos == realThat.pos
+        && begin == realThat.begin
+        && end == realThat.end;
+}
+
+StringCharacterIterator*
+StringCharacterIterator::clone() const {
+    return new StringCharacterIterator(*this);
+}
+
+void
+StringCharacterIterator::setText(const UnicodeString& newText) {
+    text = newText;
+    UCharCharacterIterator::setText(text.getBuffer(), text.length());
+}
+
+void
+StringCharacterIterator::getText(UnicodeString& result) {
+    result = text;
+}
+U_NAMESPACE_END