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#include <util/folder/path.h>
#include <util/generic/scope.h>
#include <util/generic/string.h>
#include <util/stream/file.h>
#include <util/stream/output.h>
#include <Python.h>
#include <marshal.h>
#include <cstdio>
#include <system_error>
struct TPyObjDeleter {
static void Destroy(PyObject* o) noexcept {
Py_XDECREF(o);
}
};
using TPyObject = THolder<PyObject, TPyObjDeleter>;
constexpr TStringBuf modPrefix = "mod=";
int main(int argc, char** argv) {
if ((argc - 1) % 3 != 0) {
Cerr << "Usage:\n\t" << argv[0] << " (mod=SRC_PATH_X SRC OUT)+" << Endl;
return 1;
}
PyConfig cfg{};
PyConfig_InitIsolatedConfig(&cfg);
cfg._install_importlib = 0;
Y_SCOPE_EXIT(&cfg) {PyConfig_Clear(&cfg);};
for (int i = 0; i < (argc - 1)/3; ++i) {
const TString srcpath{TStringBuf{argv[3*i + 1]}.substr(modPrefix.size())};
const TFsPath inPath{argv[3*i + 2]};
const char* outPath = argv[3*i + 3];
const auto status = Py_InitializeFromConfig(&cfg);
if (PyStatus_Exception(status)) {
Py_ExitStatusException(status);
}
Y_SCOPE_EXIT() {Py_Finalize();};
TPyObject bytecode{Py_CompileString(
TFileInput{inPath}.ReadAll().c_str(),
srcpath.c_str(),
Py_file_input
)};
if (!bytecode) {
Cerr << "Failed to compile " << outPath << Endl;
PyErr_Print();
return 1;
}
if (FILE* out = fopen(outPath, "wb")) {
PyMarshal_WriteObjectToFile(bytecode.Get(), out, Py_MARSHAL_VERSION);
fclose(out);
if (PyErr_Occurred()) {
Cerr << "Failed to marshal " << outPath << Endl;
PyErr_Print();
return 1;
}
} else {
Cerr << "Failed to write " << outPath << ": " << std::error_code{errno, std::system_category()}.message() << Endl;
return 1;
}
}
return 0;
}
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