vtextiostream.h

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/*
Copyright c1997-2014 Trygve Isaacson. All rights reserved.
This file is part of the Code Vault version 4.1
http://www.bombaydigital.com/
License: MIT. See LICENSE.md in the Vault top level directory.
*/

#ifndef vtextiostream_h
#define vtextiostream_h

#include "viostream.h"
#include "vstring.h"

class VTextIOStream : public VIOStream {
    public:

        enum {
            kLineEndingsUnknown,    
            kLineEndingsUnix,        
            kLineEndingsDOS,        
            kLineEndingsMac,        
            kLineEndingsMixed,        

            kNumLineEndingsReadKinds
        };

        enum {
            kUseUnixLineEndings,        
            kUseDOSLineEndings,            
            kUseMacLineEndings,            
            kUseSuppliedLineEndings,    
            kUseNativeLineEndings,        

            kNumLineEndingsWriteKinds
        };

        VTextIOStream(VStream& rawStream, int lineEndingsWriteKind = kUseNativeLineEndings);
        virtual ~VTextIOStream() {}

        void readLine(VString& s, bool includeLineEnding = false);

        VCodePoint readUTF8CodePoint();
        VChar readCharacterByte();

        void readAll(VString& s, bool includeLineEndings = true);
        void readAll(VStringVector& lines);

        void writeLine(const VString& s);

        void writeString(const VString& s);

        void writeLineEnd();

        int getLineEndingsReadKind() const { return mLineEndingsReadKind; }
        int getLineEndingsReadKindForWrite() const;
        int getLineEndingsWriteKind() const { return mLineEndingsWriteKind; }
        void setLineEndingsKind(int kind);

    private:

        void _updateLineEndingsReadKind(int lineEndingKind);

        int         mLineEndingsReadKind;   
        int         mLineEndingsWriteKind;  
        VCodePoint  mPendingCharacter;      
        int         mReadState;             
        VString     mLineBuffer;            
        Vu8         mLineEndingChars[2];    
        int         mLineEndingCharsLength; 

        enum {
            kReadStateReady,    
            kReadStateGot0x0D,  

            kNumReadStates
        };

};

#endif /* vtextiostream_h */