[url_launcher_windows] Correct logging url

packages/url_launcher/url_launcher_windows/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## NEXT
 
 * Updates minimum supported SDK version to Flutter 3.22/Dart 3.4.
+* Fixes an issue where the URL logged would not be unescaped on failure.
 
 ## 3.1.3
 

packages/url_launcher/url_launcher_windows/pubspec.yaml

@@ -2,7 +2,7 @@ name: url_launcher_windows
 description: Windows implementation of the url_launcher plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/url_launcher/url_launcher_windows
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+url_launcher%22
-version: 3.1.3
+version: 3.1.4
 
 environment:
   sdk: ^3.4.0

packages/url_launcher/url_launcher_windows/windows/test/url_launcher_windows_test.cpp

@@ -24,6 +24,7 @@ using flutter::EncodableMap;
 using flutter::EncodableValue;
 using ::testing::_;
 using ::testing::DoAll;
+using ::testing::HasSubstr;
 using ::testing::Pointee;
 using ::testing::Return;
 using ::testing::SetArgPointee;
@@ -160,5 +161,28 @@ TEST(UrlLauncherPlugin, LaunchUTF8EncodedFileURLSuccess) {
   EXPECT_TRUE(result.value());
 }
 
+TEST(UrlLauncherPlugin, LaunchUTF8LogsUnescapedOnFail) {
+  std::unique_ptr<MockSystemApis> system = std::make_unique<MockSystemApis>();
+
+  // Return a failure value (<32) from launching.
+  EXPECT_CALL(
+      *system,
+      ShellExecuteW(
+          _, StrEq(L"open"),
+          // 家の管理/スキャナ"),
+          StrEq(
+              L"file:///G:/\x5bb6\x306e\x7ba1\x7406/\x30b9\x30ad\x30e3\x30ca"),
+          _, _, _))
+      .WillOnce(Return(reinterpret_cast<HINSTANCE>(0)));
+
+  UrlLauncherPlugin plugin(std::move(system));
+  ErrorOr<bool> result = plugin.LaunchUrl(
+      "file:///G:/%E5%AE%B6%E3%81%AE%E7%AE%A1%E7%90%86/"
+      "%E3%82%B9%E3%82%AD%E3%83%A3%E3%83%8A");
+
+  ASSERT_TRUE(result.has_error());
+  EXPECT_THAT(result.error().message(), HasSubstr("家の管理/スキャナ"));
+}
+
 }  // namespace test
 }  // namespace url_launcher_windows

packages/url_launcher/url_launcher_windows/windows/url_launcher_plugin.cpp

@@ -99,7 +99,7 @@ ErrorOr<bool> UrlLauncherPlugin::CanLaunchUrl(const std::string& url) {
 }
 
 ErrorOr<bool> UrlLauncherPlugin::LaunchUrl(const std::string& url) {
-  std::wstring url_wide;
+  std::string url_to_open;
   if (url.find("file:") == 0) {
     // ShellExecuteW does not process %-encoded UTF8 strings in file URLs.
     DWORD unescaped_len = 0;
@@ -108,14 +108,15 @@ ErrorOr<bool> UrlLauncherPlugin::LaunchUrl(const std::string& url) {
                               &unescaped_len, URL_UNESCAPE_INPLACE))) {
       return FlutterError("open_error", "Failed to unescape file URL");
     }
-    url_wide = Utf16FromUtf8(unescaped_url);
+    url_to_open = unescaped_url;
   } else {
-    url_wide = Utf16FromUtf8(url);
+    url_to_open = url;
   }
 
-  int status = static_cast<int>(reinterpret_cast<INT_PTR>(
-      system_apis_->ShellExecuteW(nullptr, TEXT("open"), url_wide.c_str(),
-                                  nullptr, nullptr, SW_SHOWNORMAL)));
+  int status =
+      static_cast<int>(reinterpret_cast<INT_PTR>(system_apis_->ShellExecuteW(
+          nullptr, TEXT("open"), Utf16FromUtf8(url_to_open).c_str(), nullptr,
+          nullptr, SW_SHOWNORMAL)));
 
   // Per ::ShellExecuteW documentation, anything >32 indicates success.
   if (status <= 32) {
@@ -126,8 +127,8 @@ ErrorOr<bool> UrlLauncherPlugin::LaunchUrl(const std::string& url) {
       return false;
     }
     std::ostringstream error_message;
-    error_message << "Failed to open " << url << ": ShellExecute error code "
-                  << status;
+    error_message << "Failed to open " << url_to_open
+                  << ": ShellExecute error code " << status;
     return FlutterError("open_error", error_message.str());
   }
   return true;