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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* libtext602
* Version: MPL 2.0 / LGPLv2.1+
*
* 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/.
*
* Alternatively, the contents of this file may be used under the terms
* of the GNU Lesser General Public License Version 2.1 or later
* (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
* applicable instead of those above.
*
* For further information visit http://libtext602.sourceforge.net
*/
#include <cstdio>
#include "libtext602_utils.h"
uint8_t libtext602::readU8(librevenge::RVNGInputStream *input, bool /* bigEndian */)
{
if (!input || input->isEnd())
{
TEXT602_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);
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint16_t libtext602::readU16(librevenge::RVNGInputStream *input, bool bigEndian)
{
if (!input || input->isEnd())
{
TEXT602_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));
}
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint32_t libtext602::readU32(librevenge::RVNGInputStream *input, bool bigEndian)
{
if (!input || input->isEnd())
{
TEXT602_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);
}
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint64_t libtext602::readU64(librevenge::RVNGInputStream *input, bool bigEndian)
{
if (!input || input->isEnd())
{
TEXT602_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);
}
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
const unsigned char *libtext602::readNBytes(librevenge::RVNGInputStream *const input, const unsigned long numBytes)
{
if (!input || input->isEnd())
{
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long readBytes = 0;
const unsigned char *const s = input->read(numBytes, readBytes);
if (numBytes != readBytes)
{
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
return s;
}
void libtext602::skip(librevenge::RVNGInputStream *input, unsigned long numBytes)
{
if (!input || input->isEnd())
{
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
if (0 != input->seek(static_cast<long>(numBytes), librevenge::RVNG_SEEK_CUR))
{
TEXT602_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
}
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
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