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Refactor FILEIO

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This commit is contained in:
kichikuou
2024-12-08 15:06:00 +09:00
parent 48d780add6
commit 8303f7c770
11 changed files with 229 additions and 313 deletions
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src/sys/dri.cpp
+13 -17
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@@ -16,18 +16,16 @@ void Dri::open(const char* file_name)
fname = file_name;
fname[0] = 'A';
auto fio = std::make_unique<FILEIO>();
if (!fio->Fopen(fname.c_str(), FILEIO_READ_BINARY))
auto fio = FILEIO::open(fname.c_str(), FILEIO_READ_BINARY);
if (!fio)
return;
int link_sector = fio->Fgetc();
link_sector |= fio->Fgetc() << 8;
int data_sector = fio->Fgetc();
data_sector |= fio->Fgetc() << 8;
int link_sector = fio->getw();
int data_sector = fio->getw();
link_table.resize((data_sector - link_sector) * 256);
fio->Fseek((link_sector - 1) * 256, FILEIO_SEEK_SET);
fio->Fread(link_table.data(), 256, data_sector - link_sector);
fio->seek((link_sector - 1) * 256, SEEK_SET);
fio->read(link_table.data(), 256 * (data_sector - link_sector));
}
std::vector<uint8> Dri::load(int page)
@@ -40,22 +38,20 @@ std::vector<uint8> Dri::load(int page)
if (disk_index == 0 || disk_index == 0x1a)
return {};
auto fio = std::make_unique<FILEIO>();
fname[0] = 'A' + disk_index - 1;
if (!fio->Fopen(fname.c_str(), FILEIO_READ_BINARY))
auto fio = FILEIO::open(fname.c_str(), FILEIO_READ_BINARY);
if (!fio)
return {};
fio->Fseek(link_index * 2, FILEIO_SEEK_SET);
int start_sector = fio->Fgetc();
start_sector |= fio->Fgetc() << 8;
int end_sector = fio->Fgetc();
end_sector |= fio->Fgetc() << 8;
fio->seek(link_index * 2, SEEK_SET);
int start_sector = fio->getw();
int end_sector = fio->getw();
if (end_sector <= start_sector)
return {};
std::vector<uint8_t> buffer((end_sector - start_sector) * 256);
fio->Fseek((start_sector - 1) * 256, FILEIO_SEEK_SET);
fio->Fread(buffer.data(), 256, end_sector - start_sector);
fio->seek((start_sector - 1) * 256, SEEK_SET);
fio->read(buffer.data(), 256 * (end_sector - start_sector));
return buffer;
}