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#include "cru/common/io/Stream.h"
#include "cru/common/Exception.h"
#include "cru/common/Format.h"
#include <utility>
namespace cru::io {
StreamOperationNotSupportedException::StreamOperationNotSupportedException(
String operation)
: operation_(std::move(operation)) {
SetMessage(Format(u"Stream operation {} not supported.", operation_));
}
void StreamOperationNotSupportedException::CheckSeek(bool seekable) {
if (!seekable) throw StreamOperationNotSupportedException(u"seek");
}
void StreamOperationNotSupportedException::CheckRead(bool readable) {
if (!readable) throw StreamOperationNotSupportedException(u"read");
}
void StreamOperationNotSupportedException::CheckWrite(bool writable) {
if (!writable) throw StreamOperationNotSupportedException(u"write");
}
StreamAlreadyClosedException::StreamAlreadyClosedException()
: Exception(u"Stream is already closed.") {}
void StreamAlreadyClosedException::Check(bool closed) {
if (closed) throw StreamAlreadyClosedException();
}
Index Stream::Tell() { return Seek(0, SeekOrigin::Current); }
void Stream::Rewind() { Seek(0, SeekOrigin::Begin); }
Index Stream::GetSize() {
Index current_position = Tell();
Seek(0, SeekOrigin::End);
Index size = Tell();
Seek(current_position, SeekOrigin::Begin);
return size;
}
Index Stream::Read(std::byte* buffer, Index size) {
return Read(buffer, 0, size);
}
Index Stream::Write(const std::byte* buffer, Index size) {
return Write(buffer, 0, size);
}
Index Stream::Write(const char* buffer, Index offset, Index size) {
return Write(reinterpret_cast<const std::byte*>(buffer), offset, size);
}
Index Stream::Write(const char* buffer, Index size) {
return Write(reinterpret_cast<const std::byte*>(buffer), size);
}
Buffer Stream::ReadToEnd(Index grow_size) {
Buffer buffer(grow_size);
while (true) {
auto read = Read(buffer.GetUsedEndPtr(), buffer.GetBackFree());
if (read == 0) {
break;
}
if (buffer.IsUsedReachEnd()) {
buffer.ResizeBuffer(buffer.GetBufferSize() + grow_size, true);
}
}
return buffer;
}
String Stream::ReadToEndAsUtf8String() {
auto buffer = ReadToEnd();
return String::FromUtf8(buffer);
}
void Stream::Flush() {}
void Stream::Close() {}
} // namespace cru::io
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