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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /other-licenses/7zstub/src/Common/CRC.h | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'other-licenses/7zstub/src/Common/CRC.h')
| -rw-r--r-- | other-licenses/7zstub/src/Common/CRC.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/Common/CRC.h b/other-licenses/7zstub/src/Common/CRC.h new file mode 100644 index 000000000..c9d43d005 --- /dev/null +++ b/other-licenses/7zstub/src/Common/CRC.h @@ -0,0 +1,36 @@ +// Common/CRC.h
+
+#ifndef __COMMON_CRC_H
+#define __COMMON_CRC_H
+
+#include <stddef.h>
+#include "Types.h"
+
+class CCRC
+{
+ UInt32 _value;
+public:
+ static UInt32 Table[256];
+ static void InitTable();
+
+ CCRC(): _value(0xFFFFFFFF){};
+ void Init() { _value = 0xFFFFFFFF; }
+ void UpdateByte(Byte v);
+ void UpdateUInt16(UInt16 v);
+ void UpdateUInt32(UInt32 v);
+ void UpdateUInt64(UInt64 v);
+ void Update(const void *data, size_t size);
+ UInt32 GetDigest() const { return _value ^ 0xFFFFFFFF; }
+ static UInt32 CalculateDigest(const void *data, size_t size)
+ {
+ CCRC crc;
+ crc.Update(data, size);
+ return crc.GetDigest();
+ }
+ static bool VerifyDigest(UInt32 digest, const void *data, size_t size)
+ {
+ return (CalculateDigest(data, size) == digest);
+ }
+};
+
+#endif
|