Allow internationalization of about.txt

This works with custom locales (by placing the text in
[config_dir]/about/[name].txt), but if such a file does not exist, it
will default to the default locale (en)'s about text.

6 files changed, 66 insertions, 18 deletions

diff --git a/src/main/java/sevenUnitsGUI/Presenter.java b/src/main/java/sevenUnitsGUI/Presenter.java
index ba600e3..3a039a7 100644
--- a/src/main/java/sevenUnitsGUI/Presenter.java
+++ b/src/main/java/sevenUnitsGUI/Presenter.java
@@ -780,7 +780,27 @@ public final class Presenter {
 	 * @since 2022-02-19
 	 */
 	public String getAboutText() {
-		return Presenter.getLinesFromResource("/about.txt").stream()
+		final Path customFilepath = Presenter.pathFromConfig(
+				"about/" + this.userLocale + ".txt");
+		if (Files.exists(customFilepath)) {
+			try {
+				return formatAboutText(Files.lines(customFilepath));
+			} catch (IOException e) {
+				final String filename = String.format("/about/%s.txt", this.userLocale);
+				return formatAboutText(Presenter.getLinesFromResource(filename).stream());
+			}
+		} else if (LOCAL_LOCALES.contains(this.userLocale)) {
+			final String filename = String.format("/about/%s.txt", this.userLocale);
+			return formatAboutText(Presenter.getLinesFromResource(filename).stream());
+		} else {
+			final String filename = String.format("/about/%s.txt", DEFAULT_LOCALE);
+			return formatAboutText(Presenter.getLinesFromResource(filename).stream());
+		}
+		
+	}
+	
+	private String formatAboutText(Stream<String> rawLines) {
+		return rawLines
 				.map(Presenter::withoutComments).collect(Collectors.joining("\n"))
 				.replaceAll("\\[VERSION\\]", ProgramInfo.VERSION.toString())
 				.replaceAll("\\[LOADSTATS\\]", wrapString(this.loadStatMsg(), 72));
@@ -1057,16 +1077,17 @@ public final class Presenter {
 	 * @since 2024-08-22
 	 */
 	private String loadStatMsg() {
-		return String.format(
-				"Successfully loaded %d unique units with %d names (%d base units), %d unique prefixes with %d names, %d unit sets, and %d named dimensions.",
-				this.database.unitMapPrefixless(false).size(),
-				this.database.unitMapPrefixless(true).size(),
-				this.database.unitMapPrefixless(false).values().stream()
-						.filter(IS_FULL_BASE).count(),
-				this.database.prefixMap(false).size(),
-				this.database.prefixMap(true).size(),
-				this.database.unitSetMap().size(),
-				this.database.dimensionMap().size());
+		return this.getLocalizedText("load_stat_msg")
+				.replace("[u]", Integer.toString(
+						this.database.unitMapPrefixless(false).size()))
+				.replace("[un]", Integer.toString(
+						this.database.unitMapPrefixless(true).size()))
+				.replace("[b]", Long.toString(this.database.unitMapPrefixless(false)
+						.values().stream().filter(IS_FULL_BASE).count()))
+				.replace("[p]", Integer.toString(this.database.prefixMap(false).size()))
+				.replace("[pn]", Integer.toString(this.database.prefixMap(true).size()))
+				.replace("[s]", Integer.toString(this.database.unitSetMap().size()))
+				.replace("[d]", Integer.toString(this.database.dimensionMap().size()));
 	}
 
 	/**
diff --git a/src/main/java/sevenUnitsGUI/TabbedView.java b/src/main/java/sevenUnitsGUI/TabbedView.java
index 40ed0a7..9850aac 100644
--- a/src/main/java/sevenUnitsGUI/TabbedView.java
+++ b/src/main/java/sevenUnitsGUI/TabbedView.java
@@ -198,7 +198,8 @@ final class TabbedView implements ExpressionConversionView, UnitConversionView {
 	/** The text box for prefix data in the prefix viewer */
 	private final JTextArea prefixTextBox;
 	
-	// SETTINGS STUFF
+	// INFO & SETTINGS STUFF
+	final JTextArea infoTextArea;
 	private final JComboBox<String> localeSelector;
 	private StandardRoundingType roundingType;
 	private int precision;
@@ -377,11 +378,10 @@ final class TabbedView implements ExpressionConversionView, UnitConversionView {
 		this.masterPane.addTab("\uD83D\uDEC8", // info (i) character
 				new JScrollPane(infoPanel));
 		
-		final JTextArea infoTextArea = new JTextArea();
-		infoTextArea.setEditable(false);
-		infoTextArea.setOpaque(false);
-		infoPanel.add(infoTextArea);
-		infoTextArea.setText(this.presenter.getAboutText());
+		this.infoTextArea = new JTextArea();
+		this.infoTextArea.setEditable(false);
+		this.infoTextArea.setOpaque(false);
+		infoPanel.add(this.infoTextArea);
 		
 		// ============ SETTINGS PANEL ============
 		this.localeSelector = new JComboBox<>();
@@ -907,6 +907,7 @@ final class TabbedView implements ExpressionConversionView, UnitConversionView {
 	public void updateText() {
 		this.frame.setTitle(this.presenter.getLocalizedText("tv.title")
 				.replace("[v]", ProgramInfo.VERSION.toString()));
+		this.infoTextArea.setText(this.presenter.getAboutText());
 		this.localizedTextSetters.forEach((id, action) ->
 			action.accept(this.presenter.getLocalizedText(id)));
 	}
diff --git a/src/main/resources/about.txt b/src/main/resources/about/en.txt
index 4c33f8c..068f922 100644
--- a/src/main/resources/about.txt
+++ b/src/main/resources/about/en.txt
@@ -15,7 +15,7 @@ Unit/Prefix/Dimension Statistics:
 
 Copyright Notice:
 
-Unit Converter Copyright (C) 2018-2024 Adrien Hopkins
+Unit Converter Copyright (C) 2018-2025 Adrien Hopkins
 This program comes with ABSOLUTELY NO WARRANTY;
 for details read the LICENSE file, section 15
 
diff --git a/src/main/resources/about/fr.txt b/src/main/resources/about/fr.txt
new file mode 100644
index 0000000..d8d82aa
--- /dev/null
+++ b/src/main/resources/about/fr.txt
@@ -0,0 +1,24 @@
+À propos de 7Unités version [VERSION]
+
+7Unités est une programme pour convertir les unités avec plusieurs fonctions,
+inspiré par GNU Units (https://www.gnu.org/software/units/).
+Vous pouvez l’utiliser pour convertir des unités, mais vous pouvez aussi
+l’utiliser comme calculatrice, computer et convertir des expressions
+comme "10 m/s + (25^2 - 5^2) mi/hr".
+
+Ce logiciel est par Adrien Hopkins <adrien.p.hopkins@gmail.com>.
+
+Statistiques d’unités, préfixes et dimensions:
+
+[LOADSTATS]
+
+Copyright Notice:
+
+Unit Converter Copyright (C) 2018-2025 Adrien Hopkins
+This program comes with ABSOLUTELY NO WARRANTY;
+for details read the LICENSE file, section 15
+
+This is free software, and you are welcome to redistribute
+it under certain conditions; for details go to
+<https://www.gnu.org/licenses/quick-guide-gplv3.html>
+or read the LICENSE file.
diff --git a/src/main/resources/locales/en.txt b/src/main/resources/locales/en.txt
index 5173cf3..666e363 100644
--- a/src/main/resources/locales/en.txt
+++ b/src/main/resources/locales/en.txt
@@ -28,3 +28,4 @@ tv.settings.show_duplicate=Show Duplicate Units & Prefixes
 tv.settings.use_default_files=Use Default Datafiles
 tv.settings.locale=🌐 Locale:
 tv.settings.unitfiles.button=Manage Unit Data Files
+load_stat_msg=Successfully loaded [u] unique units with [un] names ([b] base units), [p] unique prefixes with [pn] names, [s] unit sets, and [d] named dimensions.
diff --git a/src/main/resources/locales/fr.txt b/src/main/resources/locales/fr.txt
index e8b7138..3fef030 100644
--- a/src/main/resources/locales/fr.txt
+++ b/src/main/resources/locales/fr.txt
@@ -28,3 +28,4 @@ tv.settings.show_duplicate=Montrer unités et préfixes doubles
 tv.settings.use_default_files=Utilise donées par défaut
 tv.settings.locale=🌐 Locale:
 tv.settings.unitfiles.button=Gérer donées d’unités
+load_stat_msg=Chargé [u] unités uniques avec [un] noms ([b] unités bases), [p] préfixes uniques avec [pn] noms, [s] collections d’unités, et [d] dimensions nomées.