Work/browse/HOLD/MEDIAPAK.CPP

#include <browse/mediapak.hpp>

MediaPak::MediaPak(void)
: mEntries(0), mOffsetEntries(0)
{
}

MediaPak::MediaPak(const MediaPak &mediaPak)
{
  *this=mediaPak;
}

MediaPak::~MediaPak()
{
  close();
}

MediaPak &MediaPak::operator=(const MediaPak &/*mediaPak*/)
{ // private implementation
  return *this;
}

BOOL MediaPak::open(const String &pathFileName,BOOL creationFlag)
{
  DWORD magic;

	mPakFile.close();
	mEntries=0;
  if(creationFlag)
	{
    mPakFile.open(pathFileName,FileHandle::ReadWrite,FileHandle::ShareRead,FileHandle::Overwrite);
		magic=HeaderMagic;
		mEntries=0;
		mPakFile.write((unsigned char*)&magic,sizeof(magic));
		mOffsetEntries=mPakFile.tell();
		mPakFile.write((unsigned char*)&mEntries,sizeof(mEntries));
	}
	else
	{
    mPakFile.open(pathFileName,FileHandle::ReadWrite,FileHandle::ShareRead,FileHandle::Open);
	  if(!mPakFile.isOkay())return FALSE;
	  mPakFile.read((unsigned char*)&magic,sizeof(magic));
		mOffsetEntries=mPakFile.tell();
		if(magic!=HeaderMagic){mPakFile.close();return FALSE;}
		mPakFile.read((unsigned char*)&mEntries,sizeof(mEntries));
	}
	return TRUE;
}

void MediaPak::close(void)
{
  if(!mPakFile.isOkay())return;
	mPakFile.close();
}

BOOL MediaPak::add(const PakEntry &pakEntry)
{
  DWORD entryLength;

  if(!isOkay())return FALSE;
	mPakFile.seek(mOffsetEntries,FileHandle::SeekBegin);
	mPakFile.read((unsigned char*)&mEntries,sizeof(mEntries));
	for(int index=0;index<mEntries;index++)
	{
	  mPakFile.read((unsigned char*)&entryLength,sizeof(entryLength));
		mPakFile.seek(entryLength,FileHandle::SeekCurrent);
	}
	entryLength=sizeof(int)+sizeof(int)+sizeof(int)+sizeof(int)+pakEntry.name().length()+((PakEntry&)pakEntry).rawData().size();  // sizeof(int)+
	mPakFile.write((unsigned char*)&entryLength,sizeof(entryLength));
	mPakFile.write((DWORD)pakEntry.type());
  mPakFile.write((DWORD)pakEntry.id());
	mPakFile.write((DWORD)pakEntry.name().length());
	mPakFile.write((unsigned char*)(char*)pakEntry.name(),pakEntry.name().length());
	mPakFile.write(((PakEntry&)pakEntry).rawData().size());
	mPakFile.write((unsigned char*)(BYTE*)&(((PakEntry&)pakEntry).rawData()[0]),((PakEntry&)pakEntry).rawData().size());
	mEntries++;
	mPakFile.seek(mOffsetEntries,FileHandle::SeekBegin);
	mPakFile.write(mEntries);
	return TRUE;
}

DWORD MediaPak::entries(void)const
{
  return mEntries;
}

BOOL MediaPak::getEntry(PakEntry &pakEntry,DWORD entryIndex)
{
  String entryName;
  int entryLength;
	int workData;

  if(!mPakFile.isOkay())return FALSE;
	mPakFile.seek(mOffsetEntries,FileHandle::SeekBegin);
	mPakFile.read((unsigned char*)&mEntries,sizeof(mEntries));
	if(entryIndex>=mEntries)return FALSE;
	for(int index=0;index<entryIndex;index++)
	{
	  mPakFile.read((unsigned char*)&entryLength,sizeof(entryLength));
		mPakFile.seek(entryLength,FileHandle::SeekCurrent);
	}
	if(!mEntries)return FALSE;
	mPakFile.read((unsigned char*)&entryLength,sizeof(entryLength));
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.type(PakEntry::EntryType(workData));
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.id(workData);
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	entryName.reserve(workData+1);
	mPakFile.read((unsigned char *)(char*)entryName,workData);
	pakEntry.name(entryName);
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.rawData().size(workData);
	mPakFile.read((unsigned char*)(BYTE*)&(pakEntry.rawData()[0]),workData);
  return TRUE;
}

BOOL MediaPak::getEntry(WaveForm &waveForm,DWORD entryIndex)
{
  PakEntry pakEntry;
  String entryName;
  int entryLength;
	int workData;

  if(!mPakFile.isOkay())return FALSE;
	mPakFile.seek(mOffsetEntries,FileHandle::SeekBegin);
	mPakFile.read((unsigned char*)&mEntries,sizeof(mEntries));
	if(entryIndex>=mEntries)return FALSE;
	for(int index=0;index<entryIndex;index++)
	{
	  mPakFile.read((unsigned char*)&entryLength,sizeof(entryLength));
		mPakFile.seek(entryLength,FileHandle::SeekCurrent);
	}
	if(!mEntries)return FALSE;
	mPakFile.read((unsigned char*)&entryLength,sizeof(entryLength));
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.type(PakEntry::EntryType(workData));
	if(PakEntry::Sound!=pakEntry.type())return FALSE;
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.id(workData);
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	entryName.reserve(workData+1);
	mPakFile.read((unsigned char *)(char*)entryName,workData);
	pakEntry.name(entryName);
	mPakFile.read((unsigned char*)&workData,sizeof(workData));
	pakEntry.rawData().size(workData);
	return waveForm<<mPakFile;
}

BOOL MediaPak::isOkay(void)const
{
  return mPakFile.isOkay();
}

//  "MPAK0100"  40h,50h,41h,4Bh
//  ENTRIES DD
//  SIZE	 DD   { THIS IS SIZEOF(TYPE)+SIZEOF(OFFSET)+SIZEOF(NAME)+SIZEOF(DATA)
//  TYPE	 DD   {SOUND=0}
//  OFFSET DD
//  NAME   { LENGTH DD, NAMEBYTES DB }
//  DATA