IPCMagicLinter: Use LibMain

Author: https://github.com/LucasChollet
Commit: https://github.com/SerenityOS/serenity/commit/b35a6b206b
Pull-request: https://github.com/SerenityOS/serenity/pull/18528

Meta/Lagom/Tools/IPCMagicLinter/CMakeLists.txt

@@ -2,4 +2,4 @@ set(SOURCES
     main.cpp
 )
 
-lagom_tool(IPCMagicLinter)
+lagom_tool(IPCMagicLinter LIBS LibMain)

Meta/Lagom/Tools/IPCMagicLinter/main.cpp

@@ -8,23 +8,23 @@
 #include <AK/StringView.h>
 #include <AK/Vector.h>
 #include <LibCore/DeprecatedFile.h>
+#include <LibMain/Main.h>
 
 // Exit code is bitwise-or of these values:
 static constexpr auto EXIT_COLLISION = 0x1;
 static constexpr auto EXIT_ERROR = 0x2;
 
-int main(int argc, char** argv)
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    if (argc < 3) {
-        warnln("Usage: {} path/to/some.ipc path/to/other.ipc [more ipc files ...]", argv[0]);
+    if (arguments.argc < 3) {
+        warnln("Usage: {} path/to/some.ipc path/to/other.ipc [more ipc files ...]", arguments.strings[0]);
         return EXIT_ERROR;
     }
 
     // Read files, compute their hashes, ignore collisions for now.
     HashMap<u32, Vector<DeprecatedString>> inverse_hashes;
     bool had_errors = false;
-    for (int file_index = 1; file_index < argc; ++file_index) {
-        DeprecatedString filename(argv[file_index]);
+    for (auto filename : arguments.strings.slice(1)) {
         auto file_or_error = Core::DeprecatedFile::open(filename, Core::OpenMode::ReadOnly);
         if (file_or_error.is_error()) {
             warnln("Error: Cannot open '{}': {}", filename, file_or_error.error());
@@ -77,7 +77,7 @@ int main(int argc, char** argv)
         had_collisions = true;
     }
 
-    outln("Checked {} files, saw {} distinct magic numbers.", argc - 1, inverse_hashes.size());
+    outln("Checked {} files, saw {} distinct magic numbers.", arguments.argc - 1, inverse_hashes.size());
     if (had_collisions)
         outln("Consider giving your new service a different name.");