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from libcpp.pair cimport pair
cdef extern from "util/system/types.h":
ctypedef unsigned long ui64
cdef extern from "util/digest/city.h":
ui64 CityHash64(const char* buf, size_t len) nogil
pair[ui64, ui64] CityHash128(const char* buf, size_t len) nogil
ui64 CityHash64WithSeed(const char* buf, size_t len, ui64 seed) nogil
cdef extern from "library/python/cityhash/hash.h":
ui64 FileCityHash128WithSeedHigh64(const char* fpath) nogil
ui64 FileCityHash64(const char* fpath) nogil
def hash64(content):
cdef const char* s = content
cdef size_t size = len(content)
cdef ui64 res = 0
if size > 128:
with nogil:
res = CityHash64(s, size)
else:
res = CityHash64(s, size)
return res
def hash128(content):
cdef const char* s = content
cdef size_t size = len(content)
cdef pair[ui64, ui64] res = pair[ui64, ui64](0, 0)
if size > 128:
with nogil:
res = CityHash128(s, size)
else:
res = CityHash128(s, size)
return res
def hash64seed(content, seed):
cdef const char* s = content
cdef size_t size = len(content)
cdef ui64 _seed = seed;
if size > 128:
with nogil:
res = CityHash64WithSeed(s, size, _seed)
else:
res = CityHash64WithSeed(s, size, _seed)
return res
def filehash64(path):
cdef const char* p = path
cdef ui64 res = 0
with nogil:
res = FileCityHash64(p)
return res
def filehash128high64(path):
cdef const char* p = path
cdef ui64 res = 0
with nogil:
res = FileCityHash128WithSeedHigh64(p)
return res
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