###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Crossbar.io Technologies GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
import os
from cffi import FFI
ffi = FFI()
ffi.cdef("""
void* nvx_utf8vld_new ();
void nvx_utf8vld_reset (void* utf8vld);
int nvx_utf8vld_validate (void* utf8vld, const uint8_t* data, size_t length);
void nvx_utf8vld_free (void* utf8vld);
int nvx_utf8vld_set_impl(void* utf8vld, int impl);
int nvx_utf8vld_get_impl(void* utf8vld);
""")
optional = True
if 'AUTOBAHN_USE_NVX' in os.environ and os.environ['AUTOBAHN_USE_NVX'] in ['1', 'true']:
optional = False
with open(os.path.join(os.path.dirname(__file__), '_utf8validator.c')) as fd:
c_source = fd.read()
ffi.set_source(
"_nvx_utf8validator",
c_source,
libraries=[],
extra_compile_args=['-std=c99', '-Wall', '-Wno-strict-prototypes', '-O3', '-march=native'],
optional=optional
)
[docs]class Utf8Validator:
def __init__(self):
self.ffi = ffi
from _nvx_utf8validator import lib
self.lib = lib
self._vld = self.ffi.gc(self.lib.nvx_utf8vld_new(), self.lib.nvx_utf8vld_free)
# print(self.lib.nvx_utf8vld_get_impl(self._vld))
[docs] def reset(self):
self.lib.nvx_utf8vld_reset(self._vld)
[docs] def validate(self, ba):
res = self.lib.nvx_utf8vld_validate(self._vld, ba, len(ba))
return (res >= 0, res == 0, None, None)
if __name__ == "__main__":
ffi.compile()