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Merge pull request #934 from TomHarte/OricTapes

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Relaxes Oric .tap signature check.
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Thomas Harte 2021-04-29 18:14:36 -04:00 committed by GitHub
commit 96ac86a757
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 3 deletions
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16
Storage/Tape/Formats/OricTAP.cpp
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@ -15,9 +15,19 @@ using namespace Storage::Tape;
OricTAP::OricTAP(const std::string &file_name) :
file_(file_name)
{
// check the file signature
if(!file_.check_signature("\x16\x16\x16\x24", 4))
throw ErrorNotOricTAP;
// Check for a sequence of at least three 0x16s followed by a 0x24.
while(true) {
const uint8_t next = file_.get8();
if(next != 0x16 && next != 0x24) {
throw ErrorNotOricTAP;
}
if(next == 0x24) {
if(file_.tell() < 4) {
throw ErrorNotOricTAP;
}
break;
}
}
// then rewind and start again
virtual_reset();