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/* libvisio
* Version: MPL 1.1 / GPLv2+ / LGPLv2+
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License or as specified alternatively below. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Major Contributor(s):
* Copyright (C) 2011 Fridrich Strba <fridrich.strba@bluewin.ch>
* Copyright (C) 2011 Eilidh McAdam <tibbylickle@gmail.com>
*
*
* All Rights Reserved.
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPLv2+"), or
* the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
* in which case the provisions of the GPLv2+ or the LGPLv2+ are applicable
* instead of those above.
*/
#include "libvisio_utils.h"
#define VSD_NUM_ELEMENTS(array) sizeof(array)/sizeof(array[0])
uint8_t libvisio::readU8(WPXInputStream *input)
{
if (!input || input->atEOS())
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);
throw EndOfStreamException();
}
uint16_t libvisio::readU16(WPXInputStream *input)
{
uint16_t p0 = (uint16_t)readU8(input);
uint16_t p1 = (uint16_t)readU8(input);
return (uint16_t)(p0|(p1<<8));
}
uint32_t libvisio::readU32(WPXInputStream *input)
{
uint32_t p0 = (uint32_t)readU8(input);
uint32_t p1 = (uint32_t)readU8(input);
uint32_t p2 = (uint32_t)readU8(input);
uint32_t p3 = (uint32_t)readU8(input);
return (uint32_t)(p0|(p1<<8)|(p2<<16)|(p3<<24));
}
uint64_t libvisio::readU64(WPXInputStream *input)
{
uint64_t p0 = (uint64_t)readU8(input);
uint64_t p1 = (uint64_t)readU8(input);
uint64_t p2 = (uint64_t)readU8(input);
uint64_t p3 = (uint64_t)readU8(input);
uint64_t p4 = (uint64_t)readU8(input);
uint64_t p5 = (uint64_t)readU8(input);
uint64_t p6 = (uint64_t)readU8(input);
uint64_t p7 = (uint64_t)readU8(input);
return (uint64_t)(p0|(p1<<8)|(p2<<16)|(p3<<24)|(p4<<32)|(p5<<40)|(p6<<48)|(p7<<56));
}
double libvisio::readDouble(WPXInputStream *input)
{
uint64_t value = readU64(input);
double *doublePointer = reinterpret_cast<double *>(&value);
return *doublePointer;
}
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