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Switch ImgFile to using uint64_t explicitly

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size_t and off_t are 32-bit values in Emscripten, which causes issues
with disk images larger than 4GB. Use the explicit type (which is more
consistent with the rest of the codebase anyway).
This commit is contained in:
Mihai Parparita 2024-07-22 21:45:31 -07:00
parent 211f8adc0e
commit 38669fd83b
2 changed files with 6 additions and 6 deletions
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6
utils/imgfile.h
View File

@ -37,10 +37,10 @@ public:
bool open(const std::string& img_path);
void close();
size_t size() const;
uint64_t size() const;
size_t read(void* buf, off_t offset, size_t length) const;
size_t write(const void* buf, off_t offset, size_t length);
uint64_t read(void* buf, uint64_t offset, uint64_t length) const;
uint64_t write(const void* buf, uint64_t offset, uint64_t length);
private:
class Impl; // Holds private fields
std::unique_ptr<Impl> impl;

6
utils/imgfile_sdl.cpp
View File

@ -46,20 +46,20 @@ void ImgFile::close()
impl->stream.close();
}
size_t ImgFile::size() const
uint64_t ImgFile::size() const
{
impl->stream.seekg(0, impl->stream.end);
return impl->stream.tellg();
}
size_t ImgFile::read(void* buf, off_t offset, size_t length) const
uint64_t ImgFile::read(void* buf, uint64_t offset, uint64_t length) const
{
impl->stream.seekg(offset, std::ios::beg);
impl->stream.read((char *)buf, length);
return impl->stream.gcount();
}
size_t ImgFile::write(const void* buf, off_t offset, size_t length)
uint64_t ImgFile::write(const void* buf, uint64_t offset, uint64_t length)
{
impl->stream.seekg(offset, std::ios::beg);
impl->stream.write((const char *)buf, length);