/usr/include/ola/io/MemoryBuffer.h is in libola-dev 0.9.1-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | /*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* MemoryBuffer.h
* An derrived class of InputBuffer that wraps a memory buffer.
* Copyright (C) 2012 Simon Newton
*/
#ifndef INCLUDE_OLA_IO_MEMORYBUFFER_H_
#define INCLUDE_OLA_IO_MEMORYBUFFER_H_
#include <ola/io/InputBuffer.h>
#include <stdint.h>
#include <string.h>
#include <algorithm>
#include <string>
namespace ola {
namespace io {
/**
* Wraps a block of memory and presents the InputBuffer interface. This does
* not free the memory when the object is destroyed.
*/
class MemoryBuffer: public InputBufferInterface {
public:
explicit MemoryBuffer(const uint8_t *data, unsigned int size)
: m_data(data),
m_size(size),
m_cursor(0) {
}
~MemoryBuffer() {}
unsigned int Read(uint8_t *data, unsigned int length) {
unsigned int data_size = std::min(m_size - m_cursor, length);
memcpy(data, m_data + m_cursor, data_size);
m_cursor += data_size;
return data_size;
}
unsigned int Read(std::string *output, unsigned int length) {
unsigned int data_size = std::min(m_size - m_cursor, length);
output->append(reinterpret_cast<const char*>(m_data + m_cursor),
data_size);
m_cursor += data_size;
return data_size;
}
private:
const uint8_t *m_data;
const unsigned int m_size;
unsigned int m_cursor;
MemoryBuffer(const MemoryBuffer&);
MemoryBuffer& operator=(const MemoryBuffer&);
};
} // namespace io
} // namespace ola
#endif // INCLUDE_OLA_IO_MEMORYBUFFER_H_
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