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- #include "DiskDevice.h"
- DiskDevice::DiskDevice()
- {
- }
- DiskDevice::~DiskDevice()
- {
- }
- bool DiskDevice::read(DiskOffset offset, unsigned length, byte* out) const
- {
- ASSERT((offset % block_size()) == 0);
- ASSERT((length % block_size()) == 0);
- dword first_block = offset / block_size();
- dword end_block = (offset + length) / block_size();
- byte* outptr = out;
- for (unsigned bi = first_block; bi < end_block; ++bi) {
- if (!read_block(bi, outptr))
- return false;
- outptr += block_size();
- }
- return true;
- }
- bool DiskDevice::write(DiskOffset offset, unsigned length, const byte* in)
- {
- ASSERT((offset % block_size()) == 0);
- ASSERT((length % block_size()) == 0);
- dword first_block = offset / block_size();
- dword end_block = (offset + length) / block_size();
- ASSERT(first_block <= 0xffffffff);
- ASSERT(end_block <= 0xffffffff);
- const byte* inptr = in;
- for (unsigned bi = first_block; bi < end_block; ++bi) {
- if (!write_block(bi, inptr))
- return false;
- inptr += block_size();
- }
- return true;
- }
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