kernel: Fix bitcoin-chainstate for windows

And turn it on in the CI.

Author: TheCharlatan

.github/workflows/ci.yml

@@ -175,7 +175,7 @@ jobs:
         job-type: [standard, fuzz]
         include:
           - job-type: standard
-            generate-options: '-DBUILD_GUI=ON -DWITH_ZMQ=ON -DBUILD_BENCH=ON -DBUILD_KERNEL_LIB=ON -DWERROR=ON'
+            generate-options: '-DBUILD_GUI=ON -DWITH_ZMQ=ON -DBUILD_BENCH=ON -DBUILD_KERNEL_LIB=ON -DBUILD_UTIL_CHAINSTATE=ON -DBUILD_KERNEL_TEST=OFF -DWERROR=ON'
             job-name: 'Windows native, VS 2022'
           - job-type: fuzz
             generate-options: '-DVCPKG_MANIFEST_NO_DEFAULT_FEATURES=ON -DVCPKG_MANIFEST_FEATURES="wallet" -DBUILD_GUI=OFF -DBUILD_FOR_FUZZING=ON -DWERROR=ON'
@@ -263,6 +263,7 @@ jobs:
           BITCOINTX: '${{ github.workspace }}\build\bin\Release\bitcoin-tx.exe'
           BITCOINUTIL: '${{ github.workspace }}\build\bin\Release\bitcoin-util.exe'
           BITCOINWALLET: '${{ github.workspace }}\build\bin\Release\bitcoin-wallet.exe'
+          BITCOINCHAINSTATE: '${{ github.workspace }}\build\bin\Release\bitcoin-chainstate.exe'
           TEST_RUNNER_EXTRA: ${{ github.event_name != 'pull_request' && '--extended' || '' }}
         run: py -3 test/functional/test_runner.py --jobs $NUMBER_OF_PROCESSORS --ci --quiet --tmpdirprefix="${RUNNER_TEMP}" --combinedlogslen=99999999 --timeout-factor=${TEST_RUNNER_TIMEOUT_FACTOR} ${TEST_RUNNER_EXTRA}
 

src/bitcoin-chainstate.cpp

@@ -9,6 +9,15 @@
 #include <string_view>
 #include <vector>
 
+#ifdef WIN32
+// clang-format off
+#include <windows.h>
+// clang-format on
+#include <codecvt>
+#include <locale>
+#include <shellapi.h>
+#endif
+
 using namespace btck;
 
 std::vector<std::byte> hex_string_to_byte_vec(std::string_view hex)
@@ -140,6 +149,22 @@ int main(int argc, char* argv[])
             << "           BREAK IN FUTURE VERSIONS. DO NOT USE ON YOUR ACTUAL DATADIR." << std::endl;
         return 1;
     }
+
+#ifdef WIN32
+    int win_argc;
+    wchar_t** wargv = CommandLineToArgvW(GetCommandLineW(), &win_argc);
+    std::vector<std::string> utf8_args(win_argc);
+    std::vector<char*> win_argv(win_argc);
+    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t> utf8_cvt;
+    for (int i = 0; i < win_argc; i++) {
+        utf8_args[i] = utf8_cvt.to_bytes(wargv[i]);
+        win_argv[i] = &utf8_args[i][0];
+    }
+    LocalFree(wargv);
+    argc = win_argc;
+    argv = win_argv.data();
+#endif
+
     std::filesystem::path abs_datadir{std::filesystem::absolute(argv[1])};
     std::filesystem::create_directories(abs_datadir);