Extract item_process_music_help into its own file

src/editor/object_settings.cpp

@@ -19,9 +19,7 @@
 #include <assert.h>
 #include <sexp/value.hpp>
 
-#include "audio/sound_file.hpp"
-#include "fmt/format.h"
-#include "util/file_system.hpp"
+#include "gui/menu_filesystem_item_processor_music_help.hpp"
 #include "util/gettext.hpp"
 #include "video/color.hpp"
 
@@ -298,45 +296,7 @@ ObjectSettings::add_music(const std::string& text, std::string* value_ptr,
                           std::optional<std::string> default_value,
                           unsigned int flags)
 {
-  auto item_processor = [](MenuItem& item, const std::string& file_path, bool in_basedir)
-  {
-    std::unique_ptr<SoundFile> sound_file;
-    try {
-      sound_file = load_sound_file(file_path);
-    } catch (...) {
-      item.set_help("");
-      return;
-    }
-
-    const std::vector<std::string>& authors = sound_file->m_authors;
-    const std::string& license = sound_file->m_license;
-    const std::string& title = sound_file->m_title;
-
-    if (title.empty() && authors.empty() && license.empty()) {
-      item.set_help("");
-      return;
-    }
-
-    const std::string filename = FileSystem::basename(file_path);
-    const std::string title_or_filename_line = title.empty() ? filename : "\"" + title + "\""; // assumes path is just a filename
-
-    std::string author_lines = "";
-
-    for (const std::string& author : authors) {
-      author_lines.append("\n" + fmt::format(fmt::runtime(_("Author") +": {}"), author));
-    }
-
-    const std::string license_line = fmt::format(fmt::runtime(_("License") + ": {}"), license);
-
-    const std::string help_text =
-        title_or_filename_line
-        + author_lines
-        + (license.empty() ? "" : "\n" + license_line);
-
-    item.set_help(help_text);
-  };
-
-  add_file(text, value_ptr, key, std::move(default_value), {".music"}, {"/music"}, false, flags, item_processor);
+  add_file(text, value_ptr, key, std::move(default_value), {".music"}, {"/music"}, false, flags, item_processor_music_help);
 }
 
 void

src/gui/menu_filesystem_item_processor_music_help.cpp

@@ -0,0 +1,44 @@
+#include "gui/menu_filesystem_item_processor_music_help.hpp"
+
+#include "fmt/format.h"
+#include "util/file_system.hpp"
+#include "util/gettext.hpp"
+
+void item_processor_music_help(MenuItem& menu_item, const std::string& file_path, bool in_basedir) {
+    std::unique_ptr<SoundFile> sound_file;
+    try {
+      sound_file = load_sound_file(file_path);
+    } catch (...) {
+      menu_item.set_help("");
+      return;
+    }
+
+    const std::vector<std::string>& authors = sound_file->m_authors;
+    const std::string& license = sound_file->m_license;
+    const std::string& title = sound_file->m_title;
+
+    if (title.empty() && authors.empty() && license.empty()) {
+      menu_item.set_help("");
+      return;
+    }
+
+    const std::string filename = FileSystem::basename(file_path);
+    const std::string title_or_filename_line = title.empty() ? filename : "\"" + title + "\""; // assumes path is just a filename
+
+    std::string author_lines = "";
+
+    for (const std::string& author : authors) {
+      author_lines.append("\n" + fmt::format(fmt::runtime(_("Author") +": {}"), author));
+    }
+
+    const std::string license_line = fmt::format(fmt::runtime(_("License") + ": {}"), license);
+
+    const std::string help_text =
+        title_or_filename_line
+        + author_lines
+        + (license.empty() ? "" : "\n" + license_line);
+
+    menu_item.set_help(help_text);
+}
+
+/* EOF */

src/gui/menu_filesystem_item_processor_music_help.hpp

@@ -0,0 +1,11 @@
+#ifndef HEADER_SUPERTUX_GUI_MENU_FILESYSTEM_ITEM_PROCESSOR_MUSIC_HELP_HPP
+#define HEADER_SUPERTUX_GUI_MENU_FILESYSTEM_ITEM_PROCESSOR_MUSIC_HELP_HPP
+
+#include "audio/sound_file.hpp"
+#include "gui/menu_item.hpp"
+
+void item_processor_music_help(MenuItem& menu_item, const std::string& file_path, bool in_basedir);
+
+#endif
+
+/* EOF */