The ada-url/ada library is a C++ library implementing the to_ascii and to_unicode functions from the Unicode Technical Standard supporting a wide range of systems. It is suitable for URL parsing.
According to our benchmarks, it can be faster than ICU.
- A recent C++ compiler supporting C++17. We test GCC 9 or better, LLVM 10 or better and Microsoft Visual Studio 2022.
std::string_view input = u8"meßagefactory.ca";// non-empty UTF-8 string, must be percent decoded
std::string idna_ascii = ada::idna::to_ascii(input);
if(idna_ascii.empty()) {
// There was an error.
}
std::cout << idna_ascii << std::endl;
// outputs 'xn--meagefactory-m9a.ca' if the input is u8"meßagefactory.ca"You may build a benchmarking tool with the library as follows under macOS and Linux:
cmake -D ADA_IDNA_BENCHMARKS=ON -B build
cmake --build build
./build/benchmarks/to_asciiThe commands for users of Visual Studio are slightly different.
Sample result (LLVM 14, Apple M1 Max processor):
---------------------------------------------------------------------
Benchmark Time CPU Iterations UserCounters...
---------------------------------------------------------------------
Ada 1504 ns 1504 ns 440984 speed=48.5371M/s time/byte=20.6028ns time/domain=250.667ns url/s=3.98935M/s
Icu 1898 ns 1897 ns 369967 speed=38.4721M/s time/byte=25.9928ns time/url=316.246ns url/s=3.16209M/s
This code is made available under the Apache License 2.0 as well as the MIT license.
Our tests include third-party code and data. The benchmarking code includes third-party code: it is provided for research purposes only and not part of the library.