readonlytextfilestream.h

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//
// Copyright [2010] Autodesk, Inc.  All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.  
//
//

#pragma once

#include "streams.h"

invisible_class (ReadonlyTextFileStream)


class ReadonlyTextFileStream : public CharStream
{
public:
    ScripterExport ReadonlyTextFileStream();
    ScripterExport ~ReadonlyTextFileStream();

    ScripterExport ReadonlyTextFileStream* open(const MCHAR* ifile_name);

    /* internal char stream protocol */
    MCHAR   get_char();
    void    unget_char(MCHAR c);
    MCHAR   peek_char();
    int     at_eos();
    unsigned int    pos();
    void    seek(int pos);
    void    rewind();
    void    flush_to_eol();
    MCHAR   putch(MCHAR c);
    const MCHAR*    puts(const MCHAR* str);
    int     printf(const MCHAR *format, ...);

    void    collect();
    void    close();

    void    gc_trace();
    void    log_to(CharStream* log);
    void    close_log();
    CharStream* get_log();
private:
    void VerifyFileOpen() const;
    MCHAR CharAtPos(size_t pos);
    int mUngetcharCount;
    MCHAR mUngetcharBuf[8];
    char* mFileBuf;
    size_t mCharCount;
    size_t mCharPos;
    CharStream* mLog;
};