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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include <cstring>
#include "Core/precomp.h"
#include <API/Core/System/cl_assert.h>
#include <API/Core/System/clanstring.h>
#include <API/Core/IOData/inputsource_memory.h>
CL_InputSource_Memory::CL_InputSource_Memory(const std::string &_data) : pos(0), str_data(_data)
{
data = (unsigned char *) str_data.c_str();
data_size = str_data.size();
}
CL_InputSource_Memory::CL_InputSource_Memory(void *_data, int size, bool copy_data) : data((unsigned char *) _data), data_size(size), pos(0)
{
if (copy_data)
{
str_data = std::string((char *) data, size);
data = (unsigned char *) str_data.c_str();
}
}
CL_InputSource_Memory::~CL_InputSource_Memory()
{
}
int CL_InputSource_Memory::read(void *dest_data, int size)
{
if (size < 0)
return 0;
if (pos + size > data_size)
{
size = data_size - pos;
if (size <= 0)
return 0;
}
memcpy(dest_data, data + pos, size);
pos += size;
return size;
}
void CL_InputSource_Memory::open()
{
pos = 0;
}
void CL_InputSource_Memory::close()
{
}
CL_InputSource *CL_InputSource_Memory::clone() const
{
return new CL_InputSource_Memory(data, data_size, true);
}
int CL_InputSource_Memory::tell() const
{
return pos;
}
void CL_InputSource_Memory::seek(int new_pos, SeekEnum seek_type)
{
switch (seek_type)
{
case seek_set:
pos = new_pos;
break;
case seek_cur:
pos += new_pos;
break;
case seek_end:
pos = data_size + new_pos;
break;
default: // invalid seek type!
cl_assert(false);
}
}
int CL_InputSource_Memory::size() const
{
return data_size;
}
void CL_InputSource_Memory::push_position()
{
cl_assert(false); // not implemented yet.
}
void CL_InputSource_Memory::pop_position()
{
cl_assert(false); // not implemented yet.
}
std::string CL_InputSource_Memory::get_data() const
{
return str_data;
}
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