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#include <cstdio>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include "libplatform/libplatform.h"
#include "node_internals.h"
#include "node_snapshot_builder.h"
#include "util-inl.h"
#include "v8.h"
int BuildSnapshot(int argc, char* argv[]);
#ifdef _WIN32
#include <windows.h>
int wmain(int argc, wchar_t* wargv[]) {
// Windows needs conversion from wchar_t to char.
// Convert argv to UTF8.
char** argv = new char*[argc + 1];
for (int i = 0; i < argc; i++) {
// Compute the size of the required buffer
DWORD size = WideCharToMultiByte(
CP_UTF8, 0, wargv[i], -1, nullptr, 0, nullptr, nullptr);
if (size == 0) {
// This should never happen.
fprintf(stderr, "Could not convert arguments to utf8.");
exit(1);
}
// Do the actual conversion
argv[i] = new char[size];
DWORD result = WideCharToMultiByte(
CP_UTF8, 0, wargv[i], -1, argv[i], size, nullptr, nullptr);
if (result == 0) {
// This should never happen.
fprintf(stderr, "Could not convert arguments to utf8.");
exit(1);
}
}
argv[argc] = nullptr;
#else // UNIX
int main(int argc, char* argv[]) {
argv = uv_setup_args(argc, argv);
// Disable stdio buffering, it interacts poorly with printf()
// calls elsewhere in the program (e.g., any logging from V8.)
setvbuf(stdout, nullptr, _IONBF, 0);
setvbuf(stderr, nullptr, _IONBF, 0);
#endif // _WIN32
return BuildSnapshot(argc, argv);
}
int BuildSnapshot(int argc, char* argv[]) {
if (argc < 2) {
std::cerr << "Usage: " << argv[0] << " <path/to/output.cc>\n";
std::cerr << " " << argv[0] << " --build-snapshot "
<< "<path/to/script.js> <path/to/output.cc>\n";
return 1;
}
std::shared_ptr<node::InitializationResult> result =
node::InitializeOncePerProcess(
std::vector<std::string>(argv, argv + argc),
node::ProcessInitializationFlags::kGeneratePredictableSnapshot);
CHECK(!result->early_return());
CHECK_EQ(result->exit_code(), 0);
std::string out_path;
std::optional<std::string_view> builder_script_path = std::nullopt;
if (node::per_process::cli_options->per_isolate->build_snapshot) {
builder_script_path = result->args()[1];
out_path = result->args()[2];
} else {
out_path = result->args()[1];
}
#ifdef NODE_MKSNAPSHOT_USE_ARRAY_LITERALS
bool use_array_literals = true;
#else
bool use_array_literals = false;
#endif
node::SnapshotConfig snapshot_config;
snapshot_config.builder_script_path = builder_script_path;
#ifdef NODE_USE_NODE_CODE_CACHE
snapshot_config.flags = node::SnapshotFlags::kDefault;
#else
snapshot_config.flags = node::SnapshotFlags::kWithoutCodeCache;
#endif
node::ExitCode exit_code =
node::SnapshotBuilder::GenerateAsSource(out_path.c_str(),
result->args(),
result->exec_args(),
snapshot_config,
use_array_literals);
node::TearDownOncePerProcess();
return static_cast<int>(exit_code);
}
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