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Add support for adding the contents of a StringRef to the MD5 hash.

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llvm-svn: 183054
This commit is contained in:
Eric Christopher 2013-05-31 22:34:56 +00:00
parent 3b08ea0a4f
commit 67d642450e
3 changed files with 27 additions and 7 deletions
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5
include/llvm/Support/MD5.h
View File

@ -49,9 +49,12 @@ public:
MD5();
/// \brief Updates the hash for arguments provided.
/// \brief Updates the hash for the byte stream provided.
void update(ArrayRef<uint8_t> Data);
/// \brief Updates the hash for the StringRef provided.
void update(StringRef Str);
/// \brief Finishes off the hash and puts the result in result.
void final(MD5Result &result);

8
lib/Support/MD5.cpp
View File

@ -219,6 +219,14 @@ void MD5::update(ArrayRef<uint8_t> Data) {
memcpy(buffer, Ptr, Size);
}
/// Add the bytes in the StringRef \p Str to the hash.
// Note that this isn't a string and so this won't include any trailing NULL
// bytes.
void MD5::update(StringRef Str) {
ArrayRef<uint8_t> SVal((const uint8_t *)Str.data(), Str.size());
update(SVal);
}
/// \brief Finish the hash and place the resulting hash into \p result.
/// \param result is assumed to be a minimum of 16-bytes in size.
void MD5::final(MD5Result &result) {

21
unittests/Support/MD5Test.cpp
View File

@ -30,22 +30,31 @@ void TestMD5Sum(ArrayRef<uint8_t> Input, StringRef Final) {
EXPECT_EQ(Res, Final);
}
void TestMD5Sum(StringRef Input, StringRef Final) {
MD5 Hash;
Hash.update(Input);
MD5::MD5Result MD5Res;
Hash.final(MD5Res);
SmallString<32> Res;
MD5::stringifyResult(MD5Res, Res);
EXPECT_EQ(Res, Final);
}
TEST(MD5Test, MD5) {
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"", (size_t) 0),
"d41d8cd98f00b204e9800998ecf8427e");
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"a", (size_t) 1),
"0cc175b9c0f1b6a831c399e269772661");
TestMD5Sum(ArrayRef<uint8_t>(
(const uint8_t *)"abcdefghijklmnopqrstuvwxyz",
(size_t) 26),
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"abcdefghijklmnopqrstuvwxyz",
(size_t) 26),
"c3fcd3d76192e4007dfb496cca67e13b");
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"\0", (size_t) 1),
"93b885adfe0da089cdf634904fd59f71");
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"a\0", (size_t) 2),
"4144e195f46de78a3623da7364d04f11");
TestMD5Sum(ArrayRef<uint8_t>(
(const uint8_t *)"abcdefghijklmnopqrstuvwxyz\0",
(size_t) 27),
TestMD5Sum(ArrayRef<uint8_t>((const uint8_t *)"abcdefghijklmnopqrstuvwxyz\0",
(size_t) 27),
"81948d1f1554f58cd1a56ebb01f808cb");
TestMD5Sum("abcdefghijklmnopqrstuvwxyz", "c3fcd3d76192e4007dfb496cca67e13b");
}
}