log and format for wstrings.

support/hololens/ServoApp/BrowserPage.cpp

@@ -3,7 +3,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 #include "pch.h"
-#include "logs.h"
+#include "strutils.h"
 #include "BrowserPage.h"
 #include "BrowserPage.g.cpp"
 #include "DefaultUrl.h"
@@ -103,7 +103,7 @@ void BrowserPage::LoadServoURI(Uri uri) {
   auto scheme = uri.SchemeName();
 
   if (scheme != SERVO_SCHEME) {
-    log("Unexpected URL: ", uri.RawUri().c_str());
+    log(L"Unexpected URL: ", uri.RawUri().c_str());
     return;
   }
   std::wstring raw{uri.RawUri()};

support/hololens/ServoApp/ServoApp.vcxproj

@@ -119,7 +119,7 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClInclude Include="logs.h" />
+    <ClInclude Include="strutils.h" />
     <ClInclude Include="pch.h" />
     <ClInclude Include="App.h">
       <DependentUpon>App.xaml</DependentUpon>
@@ -923,7 +923,6 @@
       <DependentUpon>BrowserPage.xaml</DependentUpon>
     </ClCompile>
     <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
-    <ClCompile Include="logs.cpp" />
     <ClCompile Include="ServoControl\OpenGLES.cpp" />
     <ClCompile Include="ServoControl\Servo.cpp" />
     <ClCompile Include="ServoControl\ServoControl.cpp" />

support/hololens/ServoApp/ServoApp.vcxproj.filters

@@ -10,7 +10,6 @@
   <ItemGroup>
     <ClCompile Include="pch.cpp" />
     <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
-    <ClCompile Include="logs.cpp" />
     <ClCompile Include="BrowserPage.cpp" />
     <ClCompile Include="App.cpp" />
     <ClCompile Include="ServoControl\OpenGLES.cpp">
@@ -25,7 +24,6 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="pch.h" />
-    <ClInclude Include="logs.h" />
     <ClInclude Include="BrowserPage.h" />
     <ClInclude Include="App.h" />
     <ClInclude Include="ServoControl\OpenGLES.h">
@@ -38,6 +36,7 @@
       <Filter>ServoControl</Filter>
     </ClInclude>
     <ClInclude Include="DefaultUrl.h" />
+    <ClInclude Include="strutils.h" />
   </ItemGroup>
   <ItemGroup>
     <Image Include="Assets\Wide310x150Logo.scale-200.png">

support/hololens/ServoApp/ServoControl/OpenGLES.cpp

@@ -3,7 +3,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 #include "pch.h"
-#include "logs.h"
+#include "strutils.h"
 #include "OpenGLES.h"
 
 using namespace winrt::Windows::UI::Xaml::Controls;
@@ -13,7 +13,7 @@ using namespace winrt::Windows::Foundation::Collections;
 OpenGLES::OpenGLES()
     : mEglConfig(nullptr), mEglDisplay(EGL_NO_DISPLAY),
       mEglContext(EGL_NO_CONTEXT) {
-  log("OpenGLES::OpenGLES()");
+  log(L"OpenGLES::OpenGLES()");
   Initialize();
 }
 

support/hololens/ServoApp/ServoControl/Servo.cpp

@@ -178,7 +178,7 @@ Servo::Servo(hstring url, hstring args, GLsizei width, GLsizei height,
     } else if (type == Windows::Foundation::PropertyType::Empty) {
       pref.pref_type = capi::CPrefType::Missing;
     } else {
-      log("skipping pref %s. Unknown type", key);
+      log(L"skipping pref %s. Unknown type", key);
       continue;
     }
     cprefs.push_back(pref);

support/hololens/ServoApp/ServoControl/Servo.h

@@ -6,7 +6,7 @@
 
 #include "pch.h"
 #include <EGL/egl.h>
-#include "logs.h"
+#include "strutils.h"
 #include <stdlib.h>
 
 namespace winrt::servo {

support/hololens/ServoApp/ServoControl/ServoControl.cpp

@@ -1,4 +1,5 @@
 #include "pch.h"
+#include "strutils.h"
 #include "ServoControl.h"
 #include "ServoControl.g.cpp"
 #include "Pref.g.cpp"
@@ -277,16 +278,9 @@ hstring ServoControl::LoadURIOrSearch(hstring input) {
 
   // Doesn't look like a URI. Let's search for the string.
   auto escapedInput = Uri::EscapeComponent(input);
-  std::wstring searchUri =
-      unbox_value<hstring>(std::get<1>(Servo::GetPref(L"shell.searchpage")))
-          .c_str();
-  std::wstring keyword = L"%s";
-  size_t start_pos = searchUri.find(keyword);
-  if (start_pos == std::string::npos)
-    searchUri = searchUri + escapedInput;
-  else
-    searchUri.replace(start_pos, keyword.length(), escapedInput);
-  hstring finalUri{searchUri};
+  std::wstring searchUri = unbox_value<hstring>(std::get<1>(Servo::GetPref(L"shell.searchpage"))).c_str();
+  std::wstring formated = format(searchUri, escapedInput.c_str());
+  hstring finalUri{formated};
   TryLoadUri(finalUri);
   return finalUri;
 }
@@ -323,10 +317,10 @@ void ServoControl::RunOnGLThread(std::function<void()> task) {
 /**** GL THREAD LOOP ****/
 
 void ServoControl::Loop() {
-  log("BrowserPage::Loop(). GL thread: %i", GetCurrentThreadId());
+  log(L"BrowserPage::Loop(). GL thread: %i", GetCurrentThreadId());
 
   if (mServo == nullptr) {
-    log("Entering loop");
+    log(L"Entering loop");
     ServoDelegate *sd = static_cast<ServoDelegate *>(this);
     EGLNativeWindowType win = GetNativeWindow();
     mServo = std::make_unique<Servo>(mInitialURL, mArgs, mPanelWidth,
@@ -367,7 +361,7 @@ void ServoControl::StartRenderLoop() {
 #endif
   }
   mLooping = true;
-  log("BrowserPage::StartRenderLoop(). UI thread: %i", GetCurrentThreadId());
+  log(L"BrowserPage::StartRenderLoop(). UI thread: %i", GetCurrentThreadId());
   auto task = Concurrency::create_task([=] { Loop(); });
   mLoopTask = std::make_unique<Concurrency::task<void>>(task);
 }

support/hololens/ServoApp/strutils.h

@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+template <typename... Args>
+std::wstring format(const std::wstring &txt, Args... args) {
+  size_t size = swprintf(nullptr, 0, txt.c_str(), args...) + 1;
+  if (size <= 0) {
+    throw std::runtime_error("Error during formatting.");
+  }
+  auto ptr = new wchar_t[size];
+  swprintf(ptr, size, txt.c_str(), args...);
+  auto wstr = std::wstring(ptr);
+  delete ptr;
+  return wstr;
+}
+
+template <typename... Args> void log(const std::wstring &txt, Args... args) {
+  OutputDebugString((format(txt, args...) + L"\r\n").c_str());
+}