/
IO.cpp
58 lines (49 loc) · 1.29 KB
/
IO.cpp
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#include <Gosu/IO.hpp>
#include <cassert>
#include <cstring>
void Gosu::Reader::read(void* dest, std::size_t length)
{
res->read(pos, length, dest);
seek(length);
}
void Gosu::Writer::write(const void* source, std::size_t length)
{
// Try to resize the source if necessary.
if (pos + length > res->size())
res->resize(pos + length);
res->write(pos, length, source);
seek(length);
}
std::size_t Gosu::Buffer::size() const
{
return buf.size();
}
void Gosu::Buffer::resize(std::size_t newSize)
{
buf.resize(newSize);
}
void Gosu::Buffer::read(std::size_t offset, std::size_t length,
void* destBuffer) const
{
assert(offset + length <= size());
if (length)
std::memcpy(destBuffer, &buf[offset], length);
}
void Gosu::Buffer::write(std::size_t offset, std::size_t length,
const void* sourceBuffer)
{
assert(offset + length <= size());
if (length)
std::memcpy(&buf[offset], sourceBuffer, length);
}
void Gosu::loadFile(Buffer& buffer, const std::wstring& filename)
{
File file(filename);
buffer.resize(file.size());
file.read(0, buffer.size(), buffer.data());
}
void Gosu::saveFile(const Buffer& buffer, const std::wstring& filename)
{
File file(filename, fmReplace);
file.write(0, buffer.size(), buffer.data());
}