Revert "Don't store args as std::string"

This reverts commit 8482575d1f15f13b7819856a4bc89f5035964799.

There is weird thing happened if we tried to store raw "argv" on Linux.

atom/app/atom_main.cc

@@ -155,7 +155,7 @@ int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t* cmd, int) {
   content::ContentMainParams params(&delegate);
   params.instance = instance;
   params.sandbox_info = &sandbox_info;
-  atom::AtomCommandLine::Init(argc, const_cast<const char**>(argv));
+  atom::AtomCommandLine::Init(argc, argv);
   return content::ContentMain(params);
 }
 

atom/app/atom_main_args.cc

@@ -6,15 +6,13 @@
 
 namespace atom {
 
-// static
-std::vector<const char*> AtomCommandLine::argv_;
-
-// static
-void AtomCommandLine::Init(int argc, const char* argv[]) {
-  argv_.reserve(argc);
-  for (int i = 0; i < argc; ++i) {
-    argv_.push_back(argv[i]);
+  void AtomCommandLine::Init(int argc,
+          const char* const* argv) {
+    for (int i = 0; i < argc; ++i) {
+      argv_.push_back(argv[i]);
+    }
   }
-}
+
+  std::vector<std::string> AtomCommandLine::argv_;
 
 }  // namespace atom

atom/app/atom_main_args.h

@@ -5,22 +5,22 @@
 #ifndef ATOM_APP_ATOM_MAIN_ARGS_H_
 #define ATOM_APP_ATOM_MAIN_ARGS_H_
 
+#include <string>
 #include <vector>
 
 #include "base/logging.h"
 
 namespace atom {
 
-// Singleton to remember the original "argc" and "argv".
 class AtomCommandLine {
  public:
-  static void Init(int argc, const char* argv[]);
-  static std::vector<const char*> argv() { return argv_; }
+  static void Init(int argc, const char* const* argv);
+  static std::vector<std::string> argv() { return argv_; }
 
  private:
-  static std::vector<const char*> argv_;
+  static std::vector<std::string> argv_;
 
-  DISALLOW_IMPLICIT_CONSTRUCTORS(AtomCommandLine);
+  DISALLOW_COPY_AND_ASSIGN(AtomCommandLine);
 };
 
 }  // namespace atom

atom/common/node_bindings.cc

@@ -18,6 +18,10 @@
 #include "native_mate/locker.h"
 #include "native_mate/dictionary.h"
 
+#if defined(OS_WIN)
+#include "base/strings/utf_string_conversions.h"
+#endif
+
 #include "atom/common/node_includes.h"
 
 using content::BrowserThread;
@@ -88,6 +92,18 @@ namespace {
 void UvNoOp(uv_async_t* handle) {
 }
 
+// Convert the given vector to an array of C-strings. The strings in the
+// returned vector are only guaranteed valid so long as the vector of strings
+// is not modified.
+scoped_ptr<const char*[]> StringVectorToArgArray(
+    const std::vector<std::string>& vector) {
+  scoped_ptr<const char*[]> array(new const char*[vector.size()]);
+  for (size_t i = 0; i < vector.size(); ++i) {
+    array[i] = vector[i].c_str();
+  }
+  return array.Pass();
+}
+
 base::FilePath GetResourcesPath(base::CommandLine* command_line,
                                 bool is_browser) {
   base::FilePath exec_path(command_line->argv()[0]);
@@ -157,9 +173,10 @@ node::Environment* NodeBindings::CreateEnvironment(
   std::string script_path_str = script_path.AsUTF8Unsafe();
   args.insert(args.begin() + 1, script_path_str.c_str());
 
+  scoped_ptr<const char*[]> c_argv = StringVectorToArgArray(args);
   node::Environment* env =  node::CreateEnvironment(
       context->GetIsolate(), uv_default_loop(), context,
-      args.size(), &args[0], 0, nullptr);
+      args.size(), c_argv.get(), 0, nullptr);
 
   mate::Dictionary process(context->GetIsolate(), env->process_object());
   process.Set("type", process_type);