SBSPSS/Utils/Libs/GinLib/ginio.cpp

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2000-12-02 19:55:49 +01:00
/*=========================================================================
FILENAME.CPP
Author: Gary Liddon @
Created:
Project:
Purpose:
Copyright (c) 1998 G R Liddon
===========================================================================*/
/*----------------------------------------------------------------------
Includes
-------- */
/* Std Lib
------- */
/* Glib
---- */
/* Local
----- */
#include "ginio.h"
/*----------------------------------------------------------------------
Tyepdefs && Defines
------------------- */
using namespace std;
/*----------------------------------------------------------------------
Structure defintions
-------------------- */
/*----------------------------------------------------------------------
Function Prototypes
------------------- */
/*----------------------------------------------------------------------
Vars
---- */
/*----------------------------------------------------------------------
Data
---- */
vector<GinChunk *> GinFile::ChunkHandlers;
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
GinChunk::GinChunk(void)
{
Size=0;
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
GinChunk::~GinChunk(void)
{
DumpData();
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void GinChunk::Load(Gifstream & In)
{
Data.resize(Size);
In.read((char *)(&Data[0]),Size);
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void GinFile::AddHandler(GinChunk * New)
{
ChunkHandlers.push_back(New);
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
GinChunk * GinFile::GetHandler(char const * Name)
{
GString ChunkName(Name);
GinChunk * RetChunk;
RetChunk=NULL;
for (int f=0;f<ChunkHandlers.size() && !RetChunk;f++)
{
if (ChunkName==GString(ChunkHandlers[f]->GetName()))
RetChunk=ChunkHandlers[f]->MakeNew();
}
return(RetChunk);
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
bool GinFile::GinHdr::ReadHdr(Gifstream & In)
{
vector<char> Str;
bool Done;
GString RetStr;
Done=false;
Str.reserve(1000);
while (In && !In.eof() && !Done)
{
char c=In.get();
if (!c)
Done=true;
Str.push_back(c);
}
if (Done)
{
Name=&Str[0];
In.Align(4);
if (In)
{
Size=In.Get32();
}
else
Done=false;
}
return(Done);
}
/*----------------------------------------------------------------------
Function:
Purpose:
Params:
Returns:
---------------------------------------------------------------------- */
void GinChunk::DumpData(void)
{
Size=0;
Data.resize(0);
}
/*===========================================================================
end */