RichTextMarkupProcessing.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
#include "SlateGlobals.h"
#include "Framework/Text/ITextDecorator.h"
#include "Internationalization/Regex.h"
#include "Framework/Text/IRichTextMarkupParser.h"
#include "Framework/Text/IRichTextMarkupWriter.h"
 
#if WITH_FANCY_TEXT
 
class FDefaultRichTextMarkupParser : public IRichTextMarkupParser
{
public:
    static SLATE_API TSharedRef< FDefaultRichTextMarkupParser > Create();
    static SLATE_API TSharedRef< FDefaultRichTextMarkupParser > GetStaticInstance();
 
public:
    SLATE_API virtual void Process(TArray<FTextLineParseResults>& Results, const FString& Input, FString& Output) override;
 
private:
    FDefaultRichTextMarkupParser();
 
    void ParseLineRanges(const FString& Input, const TArray<FTextRange>& LineRanges, TArray<FTextLineParseResults>& LineParseResultsArray) const;
    void HandleEscapeSequences(const FString& Input, TArray<FTextLineParseResults>& LineParseResultsArray, FString& ConcatenatedUnescapedLines) const;
 
    FRegexPattern EscapeSequenceRegexPattern;
    FRegexPattern ElementRegexPattern;
    FRegexPattern AttributeRegexPattern;
};
 
class FDefaultRichTextMarkupWriter : public IRichTextMarkupWriter
{
public:
    static SLATE_API TSharedRef< FDefaultRichTextMarkupWriter > Create();
    static SLATE_API TSharedRef< FDefaultRichTextMarkupWriter > GetStaticInstance();
 
public:
    SLATE_API virtual void Write(const TArray<FRichTextLine>& InLines, FString& Output) override;
 
private:
    FDefaultRichTextMarkupWriter() {}
    static void EscapeText(FString& TextToEscape);
};
 
#endif //WITH_FANCY_TEXT