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/*
* Seven Kingdoms: Ancient Adversaries
*
* Copyright 2010 Unavowed <unavowed@vexillium.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef INPUT_STREAM_H
#define INPUT_STREAM_H
#include <stdint.h>
#include <stdio.h>
class InputStream
{
public:
virtual ~InputStream() {}
virtual long read(void *buffer, long length) = 0;
virtual bool seek(long offset, int whence) = 0;
virtual long tell() = 0;
virtual void close() = 0;
};
/* Reads a little-endian integer */
template <typename T>
bool read_le_integer(InputStream *is, T *valp)
{
T val = T();
unsigned char c;
for (int n = 0; n < static_cast<int>(sizeof(T)); n++)
{
if (is->read(&c, 1) != 1)
return false;
val |= static_cast<T>(c) << (8 * n);
}
*valp = val;
return true;
}
template <typename T>
bool read_le(InputStream *is, T *valp)
{
return read_le_integer<T>(is, valp);
}
template <> bool read_le<float>(InputStream *is, float *valp);
template <> bool read_le<double>(InputStream *is, double *valp);
/* vim: set ts=8 sw=3: */
#endif
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