53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#include <memory>
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#include <mbgl/text/bidi.hpp>
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#include <QString>
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namespace mbgl {
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class BiDiImpl {
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public:
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QString string;
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};
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std::u16string applyArabicShaping(const std::u16string& input) {
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QString utf16string = QString::fromStdU16String(input);
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return utf16string.toStdU16String();
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}
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void BiDi::mergeParagraphLineBreaks(std::set<std::size_t>& lineBreakPoints) {
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lineBreakPoints.insert(static_cast<std::size_t>(bidi.impl->string.length()));
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}
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std::vector<std::u16string>
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BiDi::applyLineBreaking(std::set<std::size_t> lineBreakPoints) {
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mergeParagraphLineBreaks(lineBreakPoints);
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std::vector<std::u16string> transformedLines;
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std::size_t start = 0;
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for (std::size_t lineBreakPoint : lineBreakPoints) {
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transformedLines.push_back(bidi.getLine(start, lineBreakPoint));
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start = lineBreakPoint;
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}
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return transformedLines;
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}
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BiDi::BiDi() : impl(std::make_unique<BiDiImpl>())
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{
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}
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BiDi::~BiDi() = default;
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std::vector<std::u16string> BiDi::processText(const std::u16string& input, std::set<std::size_t> lineBreakPoints) {
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impl->string = QString::fromStdU16String(input);
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return applyLineBreaking(lineBreakPoints);
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}
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std::u16string BiDi::getLine(std::size_t start, std::size_t end) {
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return impl->string.mid(static_cast<int32_t>(start), static_cast<int32_t>(end - start)).toStdU16String();
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}
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} // end namespace mbgl
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