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SoOutput.h

/**************************************************************************\
 *
 *  This file is part of the Coin 3D visualization library.
 *  Copyright (C) 1998-2002 by Systems in Motion. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  version 2.1 as published by the Free Software Foundation. See the
 *  file LICENSE.LGPL at the root directory of the distribution for
 *  more details.
 *
 *  If you want to use Coin for applications not compatible with the
 *  LGPL, please contact SIM to acquire a Professional Edition license.
 *
 *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
 *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
 *
\**************************************************************************/

#ifndef COIN_SOOUTPUT_H
#define COIN_SOOUTPUT_H

#include <Inventor/system/inttypes.h>
#include <Inventor/SbBasic.h>
#include <Inventor/SbString.h>
#include <stdio.h>

class SbDict;
class SbName;
class SoBase;

typedef void * SoOutputReallocCB(void * ptr, size_t newSize);

class COIN_DLL_API SoOutput {
public:
  enum Stage { COUNT_REFS, WRITE };
  // Bitwise flags for the annotations.
  enum Annotations { ADDRESSES = 0x01, REF_COUNTS = 0x02 };

  SoOutput(void);
  SoOutput(SoOutput * dictOut);
  virtual ~SoOutput();

  virtual void setFilePointer(FILE * newFP);
  virtual FILE * getFilePointer(void) const;
  virtual SbBool openFile(const char * const fileName);
  virtual void closeFile(void);

  virtual void setBuffer(void * bufPointer, size_t initSize,
                         SoOutputReallocCB * reallocFunc, int32_t offset = 0);
  virtual SbBool getBuffer(void * & bufPointer, size_t & nBytes) const;
  virtual size_t getBufferSize(void) const;
  virtual void resetBuffer(void);
  virtual void setBinary(const SbBool flag);
  virtual SbBool isBinary(void) const;
  virtual void setHeaderString(const SbString & str);
  virtual void resetHeaderString(void);
  virtual void setFloatPrecision(const int precision);

  void setStage(Stage stage);
  Stage getStage(void) const;

  void incrementIndent(const int levels = 1);
  void decrementIndent(const int levels = 1);

  virtual void write(const char c);
  virtual void write(const char * s);
  virtual void write(const SbString & s);
  virtual void write(const SbName & n);
  virtual void write(const int i);
  virtual void write(const unsigned int i);
  virtual void write(const short s);
  virtual void write(const unsigned short s);
  virtual void write(const float f);
  virtual void write(const double d);
  virtual void writeBinaryArray(const unsigned char * c, const int length);
  virtual void writeBinaryArray(const int32_t * const l, const int length);
  virtual void writeBinaryArray(const float * const f, const int length);
  virtual void writeBinaryArray(const double * const d, const int length);

  virtual void indent(void);
  virtual void reset(void);
  void setCompact(SbBool flag);
  SbBool isCompact(void) const;
  void setAnnotation(uint32_t bits);
  uint32_t getAnnotation(void);

  static SbString getDefaultASCIIHeader(void);
  static SbString getDefaultBinaryHeader(void);

  int addReference(const SoBase * base);
  int findReference(const SoBase * base) const;

protected:
  SbBool isToBuffer(void) const;
  size_t bytesInBuf(void) const;
  SbBool makeRoomInBuf(size_t nBytes);
  void convertShort(short s, char * to);
  void convertInt32(int32_t l, char * to);
  void convertFloat(float f, char * to);
  void convertDouble(double d, char * to);
  void convertShortArray(short * from, char * to, int len);
  void convertInt32Array(int32_t * from, char * to, int len);
  void convertFloatArray(float * from, char * to, int len);
  void convertDoubleArray(double * from, char * to, int len);

  static SbString padHeader(const SbString & inString);

  SbBool wroteHeader;

private:
  int precision;
  int indentlevel;
  SbBool usersetfp, binarystream, writecompact;
  SbBool disabledwriting, memorybuffer;
  FILE * filep;
  SbString * headerstring;
  void * buffer;
  size_t buffersize;
  SoOutputReallocCB * reallocfunc;
  int32_t bufferoffset;
  Stage stage;
  SbDict * sobase2id;
  int nextreferenceid;
  uint32_t annotationbits;

  void constructorCommon(void);

  void checkHeader(void);
  void writeBytesWithPadding(const char * const p, const size_t nr);

  friend class SoBase; // Need to be able to remove items from dict.
};

#endif // !COIN_SOOUTPUT_H

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