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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <iostream>
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/string_util.h"
#include "cobalt/base/wrap_main.h"
#include "cobalt/script/mozjs/mozjs_global_environment.h"
#include "cobalt/script/source_code.h"
#include "cobalt/script/standalone_javascript_runner.h"
#include "third_party/mozjs/js/src/jsapi.h"
#include "third_party/mozjs/js/src/jsproxy.h"
namespace cobalt {
namespace script {
namespace mozjs {
namespace {
JSBool Print(JSContext* context, uint32_t argc, JS::Value* arguments_value) {
std::vector<std::string> string_args;
JS::CallArgs call_args = CallArgsFromVp(argc, arguments_value);
for (uint32_t i = 0; i < call_args.length(); ++i) {
JSString* js_string = JS_ValueToString(context, call_args[i]);
DCHECK(js_string);
JSAutoByteString auto_byte_string;
char* utf8_chars = auto_byte_string.encodeUtf8(context, js_string);
DCHECK(utf8_chars);
string_args.push_back(utf8_chars);
}
std::string joined = JoinString(string_args, ' ');
std::cout << joined << std::endl;
call_args.rval().setUndefined();
return true;
}
void SetupBindings(JSContext* context, JSObject* global_object) {
DCHECK(JS_IsGlobalObject(global_object));
JSAutoRequest auto_request(context);
JSAutoCompartment auto_comparment(context, global_object);
JS_DefineFunction(context, global_object, "print", &Print, 0,
JSPROP_ENUMERATE | JSFUN_STUB_GSOPS);
}
int MozjsMain(int argc, char** argv) {
cobalt::script::StandaloneJavascriptRunner standalone_runner;
MozjsGlobalEnvironment* global_environment =
static_cast<MozjsGlobalEnvironment*>(
standalone_runner.global_environment().get());
SetupBindings(global_environment->context(),
global_environment->global_object());
if (argc > 1) {
// Command line arguments will be flag-value pairs of the form
// -f filename
// and
// -e "inline script"
// and will be evaluated in order.
for (int i = 1; (i + 1) < argc; ++i) {
if (std::string(argv[i]) == "-f") {
std::string filename = std::string(argv[i + 1]);
// Execute source file.
FilePath source_file(filename);
standalone_runner.ExecuteFile(source_file);
++i;
} else if (std::string(argv[i]) == "-e") {
// Execute inline script.
scoped_refptr<SourceCode> source = SourceCode::CreateSourceCode(
argv[i + 1], base::SourceLocation("[stdin]", 1, 1));
// Execute the script and get the results of execution.
std::string result;
bool success = global_environment->EvaluateScript(source, &result);
// Echo the results to stdout.
if (!success) {
std::cout << "Exception: ";
}
std::cout << result << std::endl;
++i;
}
}
} else {
standalone_runner.RunInteractive();
}
return 0;
}
} // namespace
} // namespace mozjs
} // namespace script
} // namespace cobalt
COBALT_WRAP_SIMPLE_MAIN(cobalt::script::mozjs::MozjsMain);