Add command line parsing to UICommon.

Source/Core/DolphinWX/CMakeLists.txt

@@ -91,7 +91,7 @@ if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
 	set(WXLIBS ${WXLIBS} dl)
 endif()
 
-list(APPEND LIBS core uicommon)
+list(APPEND LIBS core uicommon cpp-optparse)
 
 if(APPLE)
 	if(wxWidgets_FOUND)

Source/Core/UICommon/CMakeLists.txt

@@ -1,8 +1,9 @@
-set(SRCS Disassembler.cpp
+set(SRCS CommandLineParse.cpp
+         Disassembler.cpp
          UICommon.cpp
          USBUtils.cpp)
 
-set(LIBS common)
+set(LIBS common cpp-optparse)
 if(LIBUSB_FOUND)
   set(LIBS ${LIBS} ${LIBUSB_LIBRARIES})
 endif()

Source/Core/UICommon/CommandLineParse.cpp

@@ -0,0 +1,48 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <OptionParser.h>
+
+#include "Common/Common.h"
+#include "UICommon/CommandLineParse.h"
+
+namespace CommandLineParse
+{
+std::unique_ptr<optparse::OptionParser> CreateParser(ParserOptions options)
+{
+  auto parser = std::make_unique<optparse::OptionParser>();
+  parser->usage("usage: %prog [options]... [FILE]...").version(scm_rev_str);
+
+  parser->add_option("--version").action("version").help("Print version and exit");
+
+  parser->add_option("-u", "--user").action("store").help("User folder path");
+  parser->add_option("-m", "--movie").action("store").help("Play a movie file");
+  parser->add_option("-e", "--exec")
+      .action("store")
+      .metavar("<file>")
+      .type("string")
+      .help("Load the specified file");
+
+  if (options == ParserOptions::IncludeGUIOptions)
+  {
+    parser->add_option("-d", "--debugger").action("store_true").help("Opens the debuger");
+    parser->add_option("-l", "--logger").action("store_true").help("Opens the logger");
+    parser->add_option("-b", "--batch").action("store_true").help("Exit Dolphin with emulation");
+    parser->add_option("-c", "--confirm").action("store_true").help("Set Confirm on Stop");
+  }
+
+  // XXX: These two are setting configuration options
+  parser->add_option("-v", "--video_backend").action("store").help("Specify a video backend");
+  parser->add_option("-a", "--audio_emulation")
+      .choices({"HLE", "LLE"})
+      .help("Choose audio emulation from [%choices]");
+
+  return parser;
+}
+
+optparse::Values& ParseArguments(optparse::OptionParser* parser, int argc, char** argv)
+{
+  return parser->parse_args(argc, argv);
+}
+}

Source/Core/UICommon/CommandLineParse.h

@@ -0,0 +1,23 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <memory>
+
+namespace optparse
+{
+class OptionParser;
+class Values;
+}
+
+namespace CommandLineParse
+{
+enum class ParserOptions
+{
+  IncludeGUIOptions,
+  OmitGUIOptions,
+};
+
+std::unique_ptr<optparse::OptionParser> CreateParser(ParserOptions options);
+optparse::Values& ParseArguments(optparse::OptionParser* parser, int argc, char** argv);
+}

Source/Core/UICommon/UICommon.vcxproj

@@ -53,6 +53,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="CommandLineParse.cpp" />
     <ClCompile Include="UICommon.cpp" />
     <ClCompile Include="Disassembler.cpp" />
     <ClCompile Include="USBUtils.cpp">
@@ -60,6 +61,7 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="CommandLineParse.h" />
     <ClInclude Include="UICommon.h" />
     <ClInclude Include="Disassembler.h" />
     <ClInclude Include="USBUtils.h" />