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major fix, detect skippable frames in .zst files

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This commit is contained in:
Tino Reichardt
2016-09-29 21:53:48 +02:00
parent beca06c5da
commit b7d966ecb3
1 changed files with 4 additions and 3 deletions
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7
CPP/7zip/Archive/ZstdHandler.cpp
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@@ -107,12 +107,13 @@ API_FUNC_static_IsArc IsArc_zstd(const Byte *p, size_t size)
if (size < 4) if (size < 4)
return k_IsArc_Res_NEED_MORE; return k_IsArc_Res_NEED_MORE;
// 0xFD2FB525 = 0.5
// ..
// 0xFD2FB528 = 0.8
UInt32 magic = GetUi32(p); UInt32 magic = GetUi32(p);
// zstd magic's
if (magic >= 0xFD2FB525 && magic <= 0xFD2FB528) if (magic >= 0xFD2FB525 && magic <= 0xFD2FB528)
return k_IsArc_Res_YES; return k_IsArc_Res_YES;
// skippable frames
if (magic >= 0x184D2A50 && magic <= 0x184D2A5F)
return k_IsArc_Res_YES;
return k_IsArc_Res_NO; return k_IsArc_Res_NO;
} }