From 5e606220195b147ea47d5e3889683ffcdffac63e Mon Sep 17 00:00:00 2001
From: lizzie <lizzie@eden-emu.dev>
Date: Sat, 18 Oct 2025 23:55:50 +0000
Subject: [PATCH] [android, tools] remove unused XML strings; add script to
 find unused XML strings

Signed-off-by: lizzie <lizzie@eden-emu.dev>
---
 .../app/src/main/res/values/strings.xml       | 25 ---------
 tools/README.md                               |  1 +
 tools/find-unused-strings.pl                  | 53 +++++++++++++++++++
 3 files changed, 54 insertions(+), 25 deletions(-)
 create mode 100644 tools/find-unused-strings.pl

diff --git a/src/android/app/src/main/res/values/strings.xml b/src/android/app/src/main/res/values/strings.xml
index 13eaa5bd26..79767f9231 100644
--- a/src/android/app/src/main/res/values/strings.xml
+++ b/src/android/app/src/main/res/values/strings.xml
@@ -17,7 +17,6 @@
     <!-- Spinbox strings -->
     <string name="increment">Increment</string>
     <string name="decrement">Decrement</string>
-    <string name="value">Value</string>
     <string name="value_too_low">Value must be at least %1$d</string>
     <string name="value_too_high">Value must be at most %1$d</string>
     <string name="invalid_value">Invalid value</string>
@@ -50,8 +49,6 @@
     <string name="show_fps_description">Display current frames per second</string>
     <string name="show_frametime">Show Frametime</string>
     <string name="show_frametime_description">Display current frametime</string>
-    <string name="show_speed">Show Speed</string>
-    <string name="show_speed_description">Display current emulation speed percentage</string>
     <string name="show_app_ram_usage">Show App Memory Usage</string>
     <string name="show_app_ram_usage_description">Display the amount of RAM the emulator is using</string>
     <string name="show_system_ram_usage">Show System Memory Usage</string>
@@ -344,8 +341,6 @@
     <string name="settings_description">Configure emulator settings</string>
     <string name="search_recently_played">Recently played</string>
     <string name="search_recently_added">Recently added</string>
-    <string name="search_retail">Retail</string>
-    <string name="search_homebrew">Homebrew</string>
     <string name="open_user_folder">Open Eden folder</string>
     <string name="open_user_folder_description">Manage Eden\'s internal files</string>
     <string name="theme_and_color_description">Modify the look of the app</string>
@@ -603,7 +598,6 @@
     <string name="qualified_button">%1$s%2$s%3$sButton %4$s</string>
     <string name="qualified_axis">Axis %1$s%2$s</string>
     <string name="unused">Unused</string>
-    <string name="input_prompt">Move or press an input</string>
     <string name="unsupported_input">Unsupported input type</string>
     <string name="input_mapping_filter">Input mapping filter</string>
     <string name="input_mapping_filter_description">Select a device to filter mapping inputs</string>
@@ -650,8 +644,6 @@
     <string name="slider_default">Default</string>
     <string name="ini_saved">Saved settings</string>
     <string name="gameid_saved">Saved settings for %1$s</string>
-    <string name="error_saving">Error saving %1$s.ini: %2$s</string>
-    <string name="unimplemented_menu">Unimplemented Menu</string>
     <string name="loading">Loading…</string>
     <string name="shutting_down">Shutting down…</string>
     <string name="reset_setting_confirmation">Do you want to reset this setting back to its default value?</string>
@@ -677,15 +669,11 @@
     <string name="import_success">Imported successfully</string>
     <string name="export_success">Exported successfully</string>
     <string name="start">Start</string>
-    <string name="clear">Clear</string>
     <string name="global">Global</string>
     <string name="custom">Custom</string>
-    <string name="notice">Notice</string>
     <string name="import_complete">Import complete</string>
-    <string name="more_options">More options</string>
     <string name="use_global_setting">Use global setting</string>
     <string name="operation_completed_successfully">The operation completed successfully</string>
-    <string name="retry">Retry</string>
     <string name="confirm">Confirm</string>
     <string name="load">Load</string>
     <string name="save">Save</string>
@@ -703,12 +691,9 @@
 
     <!-- GPU driver fetcher -->
     <string name="fetch_error">Error while Fetching</string>
-    <string name="check_connection">Check your connection and try again.</string>
     <string name="show_releases">Show Releases</string>
-    <string name="view_full_release_notes">Release Notes</string>
     <string name="failed_to_fetch">Failed to fetch</string>
     <string name="error_during_fetch">Error during Fetch</string>
-    <string name="toggle_release_notes">Toggle release notes</string>
     <string name="downloads">Downloads</string>
     <string name="show_downloads">Show Downloads</string>
     <string name="hide_downloads">Hide Downloads</string>
@@ -728,7 +713,6 @@
 
     <!-- Preferences Screen -->
     <string name="preferences_settings">Settings</string>
-    <string name="preferences_general">General</string>
     <string name="preferences_system">System</string>
     <string name="preferences_system_description">Docked mode, region, language</string>
     <string name="preferences_graphics">Graphics</string>
@@ -841,8 +825,6 @@
     <string name="config_already_exists_message">Custom settings already exist for %1$s.\n\nWould you like to overwrite the existing configuration?\n\nThis action cannot be undone.</string>
     <string name="config_exists_prompt">Checking for existing configuration...</string>
     <string name="overwrite_cancelled">Overwrite cancelled</string>
-    <string name="checking_driver">Checking for custom driver: %1$s</string>
-    <string name="driver_unavailable">Custom driver not available for this device</string>
     <string name="overwrite">Overwrite</string>
 
     <!-- Driver strings -->
@@ -852,8 +834,6 @@
     <string name="driver_installed">Driver installed successfully</string>
     <string name="driver_installation_failed_title">Driver Installation Failed</string>
     <string name="driver_installation_failed_message">Failed to install the GPU driver: %s</string>
-    <string name="driver_not_available_title">Driver Not Available</string>
-    <string name="driver_not_available_message">The selected driver is not available for download.</string>
     <string name="driver_not_found">Required driver not installed: %s</string>
     <string name="invalid_driver_file">Invalid driver file: %s</string>
     <string name="network_unavailable">No network connection available. Please check your internet connection and try again.</string>
@@ -865,8 +845,6 @@
     <!-- Emulation Menu -->
     <string name="emulation_exit">Exit emulation</string>
     <string name="emulation_done">Done</string>
-    <string name="emulation_fps_counter">FPS counter</string>
-    <string name="emulation_thermal_indicator">Thermal indicator</string>
     <string name="emulation_toggle_controls">Toggle controls</string>
     <string name="emulation_rel_stick_center">Relative stick center</string>
     <string name="emulation_dpad_slide">D-pad slide</string>
@@ -921,7 +899,6 @@
     <string name="memory_8gb">8GB (Unsafe)</string>
 
     <!--CPU clock speeds-->
-    <string name="clock_base">Base (1000MHz)</string>
     <string name="clock_boost">Boost (1700MHz)</string>
     <string name="clock_fast">Fast (2000MHz)</string>
 
@@ -956,7 +933,6 @@
     <string name="language_serbian" translatable="false">српски</string>
 
     <!-- Memory Sizes -->
-    <string name="memory_byte">Byte</string>
     <string name="memory_byte_shorthand">B</string>
     <string name="memory_kilobyte">KB</string>
     <string name="memory_megabyte">MB</string>
@@ -1074,7 +1050,6 @@
     <string name="gamepad_screenshot">Screenshot</string>
 
     <!-- Disk shader cache -->
-    <string name="preparing_shaders">Preparing shaders</string>
     <string name="building_shaders">Building shaders</string>
 
     <!-- Theme options -->
diff --git a/tools/README.md b/tools/README.md
index 35fd7a390c..5fa4614a96 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -8,6 +8,7 @@ Tools for Eden and other subprojects.
 
 ## Eden
 
+- `find-unused-strings.pl`: Find unused strings (for Android XML files).
 - `shellcheck.sh`: Ensure POSIX compliance (and syntax sanity) for all tools in this directory and subdirectories.
 - `llvmpipe-run.sh`: Sets environment variables needed to run any command (or Eden) with llvmpipe.
 - `optimize-assets.sh`: Optimize PNG assets with OptiPng.
diff --git a/tools/find-unused-strings.pl b/tools/find-unused-strings.pl
new file mode 100644
index 0000000000..08b73486da
--- /dev/null
+++ b/tools/find-unused-strings.pl
@@ -0,0 +1,53 @@
+#!/usr/bin/perl
+# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+use strict;
+use warnings;
+use List::Util qw(uniq);
+open STRINGS, '<', 'src/android/app/src/main/res/values/strings.xml';
+my @raw_strings = <STRINGS>;
+my @line_strings = grep {/\bstring name="\b/} @raw_strings;
+my @strings = map { my @x = split('"', $_); $x[1] } @line_strings;
+close STRINGS;
+my $pattern = join('|', @strings);
+my $regex = qr/($pattern)/;
+my @unused_strings = @strings;
+sub process_file {
+    my $b = $_[1];
+    open FILE, "<".$_[0] or die "cant open ".$_[0];
+    #print "<!-- FILE: ".$_[0]." -->"."\n";
+    while (my $line = <FILE>) {
+        $line =~ s/^\s+|\s+$//g; #trim
+        if ($line =~ $regex) {
+            foreach my $e (@strings) {
+                my $re = $b != 0 ? ('\b'.quotemeta("R.string.".$e).'\b') : quotemeta("\@string/".$e);
+                #print "<!--             match: ".$e." -> ".$line."-->\n" if $line =~ /$re/;
+                @unused_strings = grep {!/$e/} @unused_strings if $line =~ /$re/;
+            }
+        }
+    }
+    close FILE;
+}
+# xml files
+open XML_LIST, "find src/android/app/src/main -type f -iname '*.xml' |" || die;
+foreach (<XML_LIST>) { process_file($_, 0) if $_ !~ /\/strings.xml/; }
+close XML_LIST;
+# kotlin
+open KOT_LIST, "find src/android/app/src/main -type f -iname '*.kt' |" || die;
+foreach (<KOT_LIST>) { process_file $_, 1; }
+close KOT_LIST;
+#print "unused strings: ".scalar(@unused_strings)."\n";
+#foreach (@unused_strings) { print $_."\n"; }
+open STRINGS, '<', 'src/android/app/src/main/res/values/strings.xml';
+while (my $line = <STRINGS>) {
+    my $b = 1;
+    if ($line =~ $regex) {
+        foreach my $e (@unused_strings) {
+            my $re = quotemeta('"'.$e.'"');
+            print "<!-- UNUSED ".$line." : ".$e."-->\n" if $line =~ /$re/;
+            $b = $line =~ /$re/ ? 0 : $b;
+        }
+    }
+    print $line if $b > 0;
+}
+close STRINGS;