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Adds just enough to list all the blocks in an IPF.

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This commit is contained in:
Thomas Harte 2021-12-25 17:27:50 -05:00
parent dba3a3d942
commit c118dd8afe
1 changed files with 22 additions and 0 deletions
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22
Storage/Disk/DiskImage/Formats/IPF.cpp
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@ -12,6 +12,28 @@ using namespace Storage::Disk;
IPF::IPF(const std::string &file_name) : file_(file_name) {
while(true) {
const auto start_of_block = file_.tell();
const uint32_t type = file_.get32be();
uint32_t length = file_.get32be(); // Can't be const because of the dumb encoding of DATA blocks.
[[maybe_unused]] const uint32_t crc = file_.get32be();
if(file_.eof()) break;
#define BLOCK(a, b, c, d) (a << 24) | (b << 16) | (c << 8) | d
switch(type) {
default:
printf("Ignoring %c%c%c%c, starting at %ld of length %d\n", (type >> 24), (type >> 16) & 0xff, (type >> 8) & 0xff, type & 0xff, start_of_block, length);
break;
case BLOCK('D', 'A', 'T', 'A'): {
length += file_.get32be();
printf("Handling DATA block at %ld of length %d\n", start_of_block, length);
} break;
}
#undef BLOCK
file_.seek(start_of_block + length, SEEK_SET);
}
}
HeadPosition IPF::get_maximum_head_position() {