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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* This file is part of the libsw602 project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <cstdio>
#include "libsw602_utils.h"
namespace libsw602
{
uint8_t readU8(librevenge::RVNGInputStream &input, bool /* bigEndian */)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input.read(sizeof(uint8_t), numBytesRead);
if (p && numBytesRead == sizeof(uint8_t))
return *(uint8_t const *)(p);
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint16_t readU16(librevenge::RVNGInputStream &input, bool bigEndian)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input.read(sizeof(uint16_t), numBytesRead);
if (p && numBytesRead == sizeof(uint16_t))
{
if (bigEndian)
return static_cast<uint16_t>((uint16_t)p[1]|((uint16_t)p[0]<<8));
return static_cast<uint16_t>((uint16_t)p[0]|((uint16_t)p[1]<<8));
}
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint32_t readU32(librevenge::RVNGInputStream &input, bool bigEndian)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input.read(sizeof(uint32_t), numBytesRead);
if (p && numBytesRead == sizeof(uint32_t))
{
if (bigEndian)
return (uint32_t)p[3]|((uint32_t)p[2]<<8)|((uint32_t)p[1]<<16)|((uint32_t)p[0]<<24);
return (uint32_t)p[0]|((uint32_t)p[1]<<8)|((uint32_t)p[2]<<16)|((uint32_t)p[3]<<24);
}
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint64_t readU64(librevenge::RVNGInputStream &input, bool bigEndian)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input.read(sizeof(uint64_t), numBytesRead);
if (p && numBytesRead == sizeof(uint64_t))
{
if (bigEndian)
return (uint64_t)p[7]|((uint64_t)p[6]<<8)|((uint64_t)p[5]<<16)|((uint64_t)p[4]<<24)|((uint64_t)p[3]<<32)|((uint64_t)p[2]<<40)|((uint64_t)p[1]<<48)|((uint64_t)p[0]<<56);
return (uint64_t)p[0]|((uint64_t)p[1]<<8)|((uint64_t)p[2]<<16)|((uint64_t)p[3]<<24)|((uint64_t)p[4]<<32)|((uint64_t)p[5]<<40)|((uint64_t)p[6]<<48)|((uint64_t)p[7]<<56);
}
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
const unsigned char *readNBytes(librevenge::RVNGInputStream &input, const unsigned long numBytes)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long readBytes = 0;
const unsigned char *const s = input.read(numBytes, readBytes);
if (numBytes != readBytes)
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
return s;
}
void skip(librevenge::RVNGInputStream &input, unsigned long numBytes)
{
if (input.isEnd())
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
if (0 != input.seek(static_cast<long>(numBytes), librevenge::RVNG_SEEK_CUR))
{
SW602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
}
}
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
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