int main(int argc, const char **argv)
{
try {
JsonnetVm *vm = jsonnet_make();
JsonnetConfig config;
ArgStatus arg_status = process_args(argc, argv, &config, vm);
if (arg_status != ARG_CONTINUE) {
jsonnet_destroy(vm);
return arg_status == ARG_SUCCESS ? EXIT_SUCCESS : EXIT_FAILURE;
}
// Evaluate input Jsonnet and handle any errors from Jsonnet VM.
int error;
char *output;
switch (config.cmd) {
case EVAL: {
assert(config.inputFiles.size() == 1);
// Read input file.
std::string input;
if (!read_input(&config, &config.inputFiles[0], &input)) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
if (config.evalMulti) {
output = jsonnet_evaluate_snippet_multi(
vm, config.inputFiles[0].c_str(), input.c_str(), &error);
} else if (config.evalStream) {
output = jsonnet_evaluate_snippet_stream(
vm, config.inputFiles[0].c_str(), input.c_str(), &error);
} else {
output = jsonnet_evaluate_snippet(
vm, config.inputFiles[0].c_str(), input.c_str(), &error);
}
if (error) {
std::cerr << output;
jsonnet_realloc(vm, output, 0);
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
// Write output JSON.
if (config.evalMulti) {
if (!write_multi_output_files(
vm, output, config.evalMultiOutputDir, config.outputFile)) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
} else if (config.evalStream) {
if (!write_output_stream(vm, output, config.outputFile)) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
} else {
bool successful = write_output_file(output, config.outputFile);
jsonnet_realloc(vm, output, 0);
if (!successful) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
} break;
case FMT: {
std::string output_file = config.outputFile;
if (config.fmtInPlace || config.fmtTest) {
assert(config.inputFiles.size() >= 1);
for (std::string &inputFile : config.inputFiles) {
if (config.fmtInPlace) {
output_file = inputFile;
if (inputFile == "-") {
std::cerr << "ERROR: Cannot use --in-place with stdin" << std::endl;
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
if (config.filenameIsCode) {
std::cerr << "ERROR: Cannot use --in-place with --exec"
<< std::endl;
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
std::string input;
if (!read_input(&config, &inputFile, &input)) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
output = jsonnet_fmt_snippet(vm, inputFile.c_str(), input.c_str(), &error);
if (error) {
std::cerr << output;
jsonnet_realloc(vm, output, 0);
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
if (config.fmtTest) {
// Check the output matches the input.
bool ok = output == input;
jsonnet_realloc(vm, output, 0);
if (!ok) {
jsonnet_destroy(vm);
return 2;
}
} else {
// Write output Jsonnet.
bool successful = write_output_file(output, output_file);
jsonnet_realloc(vm, output, 0);
if (!successful) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
}
} else {
assert(config.inputFiles.size() == 1);
// Read input file.
std::string input;
if (!read_input(&config, &config.inputFiles[0], &input)) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
output = jsonnet_fmt_snippet(
vm, config.inputFiles[0].c_str(), input.c_str(), &error);
if (error) {
std::cerr << output;
jsonnet_realloc(vm, output, 0);
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
// Write output Jsonnet.
bool successful = write_output_file(output, output_file);
jsonnet_realloc(vm, output, 0);
if (!successful) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
} break;
}
jsonnet_destroy(vm);
return EXIT_SUCCESS;
} catch (const std::bad_alloc &) {
// Avoid further allocation attempts
fputs("Internal out-of-memory error (please report this)\n", stderr);
} catch (const std::exception &e) {
std::cerr << "Internal error (please report this): " << e.what() << std::endl;
} catch (...) {
std::cerr << "An unknown exception occurred (please report this)." << std::endl;
}
return EXIT_FAILURE;
}
int main(int argc, const char **argv)
{
try {
JsonnetVm *vm = jsonnet_make();
JsonnetConfig config;
if (!process_args(argc, argv, &config, vm)) {
return EXIT_FAILURE;
}
// Read input files.
std::string input;
if (!read_input(&config, &input)) {
return EXIT_FAILURE;
}
// Evaluate input Jsonnet and handle any errors from Jsonnet VM.
int error;
char *output;
if (config.multi()) {
output = jsonnet_evaluate_snippet_multi(
vm, config.input_file().c_str(), input.c_str(), &error);
} else {
output = jsonnet_evaluate_snippet(
vm, config.input_file().c_str(), input.c_str(), &error);
}
if (error) {
std::cerr << output;
std::cerr.flush();
jsonnet_realloc(vm, output, 0);
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
// Write output JSON.
if (config.multi()) {
if (!write_multi_output_files(vm, output, config.output_dir())) {
return EXIT_FAILURE;
}
} else {
bool successful = write_output_file(output, config.output_file());
jsonnet_realloc(vm, output, 0);
if (!successful) {
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
jsonnet_destroy(vm);
return EXIT_SUCCESS;
} catch (const std::bad_alloc &) {
// Avoid further allocation attempts
fputs("Internal out-of-memory error (please report this)\n", stderr);
} catch (const std::exception &e) {
std::cerr << "Internal error (please report this): "
<< e.what() << std::endl;
} catch (...) {
std::cerr << "An unknown exception occurred (please report this)."
<< std::endl;
}
return EXIT_FAILURE;
}
int main(int argc, const char **argv)
{
JsonnetVM *vm = jsonnet_make();
std::string filename = "-";
bool filename_is_code = false;
bool multi = false;
auto args = simplify_args(argc, argv);
std::vector<std::string> remaining_args;
for (unsigned i = 0; i<args.size(); ++i) {
const std::string &arg = args[i];
if (arg == "-h" || arg == "--help") {
usage(std::cout);
exit(EXIT_SUCCESS);
}
else if (arg == "-s" || arg == "--max-stack") {
long l = strtol_check(next_arg(i, args));
if (l < 1) {
std::cerr << "ERROR: Invalid --max-stack value: " << l << "\n" << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
jsonnet_max_stack(vm, l);
}
else if (arg == "-E" || arg == "--env") {
const std::string var = next_arg(i, args);
const char *val = ::getenv(var.c_str());
if (val == nullptr) {
std::cerr << "ERROR: Environment variable " << var
<< " was undefined." << std::endl;
exit(EXIT_FAILURE);
}
jsonnet_ext_var(vm, var.c_str(), val);
}
else if (arg == "-V" || arg == "--var") {
const std::string var_val = next_arg(i, args);
size_t eq_pos = var_val.find_first_of('=', 0);
if (eq_pos == std::string::npos) {
std::cerr << "ERROR: argument not in form <var>=<val> \""
<< var_val << "\"." << std::endl;
exit(EXIT_FAILURE);
}
const std::string var = var_val.substr(0, eq_pos);
const std::string val = var_val.substr(eq_pos + 1, std::string::npos);
jsonnet_ext_var(vm, var.c_str(), val.c_str());
}
else if (arg == "--gc-min-objects") {
long l = strtol_check(next_arg(i, args));
if (l < 0) {
std::cerr << "ERROR: Invalid --gc-min-objects value: " << l << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
jsonnet_gc_min_objects(vm, l);
}
else if (arg == "-t" || arg == "--max-trace") {
long l = strtol_check(next_arg(i, args));
if (l < 0) {
std::cerr << "ERROR: Invalid --max-trace value: " << l << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
jsonnet_max_trace(vm, l);
}
else if (arg == "--gc-growth-trigger") {
const char *arg = next_arg(i, args).c_str();
char *ep;
double v = std::strtod(arg, &ep);
if (*ep != '\0' || *arg == '\0') {
std::cerr << "ERROR: Invalid number \"" << arg << "\"" << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
if (v < 0) {
std::cerr << "ERROR: Invalid --gc-growth-trigger \"" << arg << "\"\n" << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
jsonnet_gc_growth_trigger(vm, v);
}
else if (arg == "-e" || arg == "--exec") {
filename_is_code = true;
}
else if (arg == "-m" || arg == "--multi") {
multi = true;
}
else if (arg == "--debug-ast") {
jsonnet_debug_ast(vm, true);
}
else if (arg == "--") {
// All subsequent args are not options.
while ((++i) < args.size())
remaining_args.push_back(args[i]);
break;
}
else {
remaining_args.push_back(args[i]);
}
}
if (remaining_args.size() > 0)
filename = remaining_args[0];
if (remaining_args.size() > 1) {
std::cerr << "ERROR: Filename already specified as \"" << filename << "\"\n"
<< std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
if (filename_is_code && remaining_args.size() == 0) {
std::cerr << "ERROR: Must give filename when using -e, --exec\n" << std::endl;
usage(std::cerr);
exit(EXIT_FAILURE);
}
std::string input;
if (filename_is_code) {
input = filename;
filename = "<cmdline>";
}
else {
if (filename == "-") {
filename = "<stdin>";
input.assign(std::istreambuf_iterator<char>(std::cin),
std::istreambuf_iterator<char>());
}
else {
std::ifstream f;
f.open(filename.c_str());
if (!f.good()) {
std::string msg = "Opening input file: " + filename;
perror(msg.c_str());
return EXIT_FAILURE;
}
input.assign(std::istreambuf_iterator<char>(f),
std::istreambuf_iterator<char>());
if (!f.good()) {
std::string msg = "Reading input file: " + filename;
perror(msg.c_str());
return EXIT_FAILURE;
}
}
}
int error;
const char *output;
if (multi) {
output = jsonnet_evaluate_snippet_multi(vm, filename.c_str(), input.c_str(), &error);
}
else {
output = jsonnet_evaluate_snippet(vm, filename.c_str(), input.c_str(), &error);
}
if (error) {
std::cerr << output;
std::cerr.flush();
jsonnet_cleanup_string(vm, output);
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
if (multi) {
std::map<std::string, std::string> r;
for (const char *c = output; *c != '\0';) {
const char *filename = c;
const char *c2 = c;
while (*c2 != '\0') ++c2;
++c2;
const char *json = c2;
while (*c2 != '\0') ++c2;
++c2;
c = c2;
r[filename] = json;
}
jsonnet_cleanup_string(vm, output);
for (const auto &pair : r) {
const std::string &new_content = pair.second;
const std::string &filename = pair.first;
std::cout << filename << std::endl;
{
std::ifstream exists(filename.c_str());
if (exists.good()) {
std::string existing_content;
existing_content.assign(std::istreambuf_iterator<char>(exists),
std::istreambuf_iterator<char>());
if (existing_content == new_content) {
// Do not bump the timestamp on the file if its content is the same.
// This may trigger other tools (e.g. make) to do unnecessary work.
continue;
}
}
}
std::ofstream f;
f.open(filename.c_str());
if (!f.good()) {
std::string msg = "Opening output file: " + filename;
perror(msg.c_str());
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
f << new_content;
f.close();
if (!f.good()) {
std::string msg = "Writing to output file: " + filename;
perror(msg.c_str());
jsonnet_destroy(vm);
return EXIT_FAILURE;
}
}
std::cout.flush();
}
else {
std::cout << output;
std::cout.flush();
jsonnet_cleanup_string(vm, output);
}
jsonnet_destroy(vm);
return EXIT_SUCCESS;
}