Localization fix

diylc/diylc-library/src/main/java/org/diylc/components/passive/CapacitorDatasheetService.java

@@ -20,8 +20,10 @@ package org.diylc.components.passive;
 
 import java.awt.Color;
 import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
 import java.text.NumberFormat;
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
 
@@ -37,7 +39,10 @@ public class CapacitorDatasheetService {
 
   private static CapacitorDatasheetService instance;
 
-  private static NumberFormat format = new DecimalFormat("##.###");
+  // lookup keys are matched against the datasheet files, which always use '.' as the decimal
+  // separator
+  private static NumberFormat format =
+      new DecimalFormat("##.###", DecimalFormatSymbols.getInstance(Locale.ROOT));
 
   private Map<String, CapacitorDatasheet> cache = new HashMap<String, CapacitorDatasheet>();
 

diylc/diylc-library/src/test/java/org/diylc/netlist/SpiceSumarizerTests.java

@@ -0,0 +1,65 @@
+/*
+
+    DIY Layout Creator (DIYLC).
+    Copyright (c) 2009-2025 held jointly by the individual authors.
+
+    This file is part of DIYLC.
+
+    DIYLC is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    DIYLC is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DIYLC.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+package org.diylc.netlist;
+
+import java.util.Arrays;
+import java.util.Locale;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.diylc.components.passive.Resistor;
+import org.diylc.core.IDIYComponent;
+import org.diylc.core.measures.Resistance;
+import org.diylc.core.measures.ResistanceUnit;
+
+public class SpiceSumarizerTests {
+
+  private Locale defaultLocale;
+
+  @Before
+  public void setUp() {
+    defaultLocale = Locale.getDefault();
+  }
+
+  @After
+  public void tearDown() {
+    Locale.setDefault(defaultLocale);
+  }
+
+  @Test
+  public void testDecimalValueIgnoresLocale() throws TreeException {
+    Locale.setDefault(Locale.GERMANY);
+
+    Resistor resistor = new Resistor();
+    resistor.setName("R1");
+    resistor.setValue(new Resistance(4.7d, ResistanceUnit.K));
+
+    Netlist netlist = new Netlist(Arrays.<IDIYComponent<?>>asList(resistor));
+    netlist.add(new Group(new Node(resistor, 0), new Node(resistor, 1)));
+
+    String spice = SpiceSumarizer.summarize(netlist, false);
+    Assert.assertTrue(spice, spice.contains(" 4.7K "));
+  }
+}