Parser: Prepend `0` to all strings starting with `.`, even just `.` [#838]

100_core/src/gplx/Decimal_adp_.java

@@ -1,6 +1,6 @@
 /*
 XOWA: the XOWA Offline Wiki Application
-Copyright (C) 2012-2020 gnosygnu@gmail.com
+Copyright (C) 2012-2021 gnosygnu@gmail.com
 
 XOWA is licensed under the terms of the General Public License (GPL) Version 3,
 or alternatively under the terms of the Apache License Version 2.0.
@@ -75,6 +75,10 @@ public class Decimal_adp_ {
 	        if (raw.contains("e")) {
 	        	raw = raw.replace("e", "E");
 	        }
+	        // 2021-02-13|ISSUE#:838|Parse '.' as '0.'; PAGE:en.w:2019_FIVB_Volleyball_Women%27s_Challenger_Cup#Pool_A
+			if (raw.startsWith(".")) {
+				raw = "0" + raw;
+			}
 	        BigDecimal bd = (BigDecimal)nf.parse(raw);
 			return new Decimal_adp(bd);
 		} catch (ParseException e) {
@@ -84,4 +88,4 @@ public class Decimal_adp_ {
 	public static Decimal_adp pow_10_(int v) {return new Decimal_adp(new BigDecimal(1).scaleByPowerOfTen(v));}
 	public static final MathContext RoundDownContext = new MathContext(0, RoundingMode.DOWN);
 	public static final MathContext Gplx_rounding_context = new MathContext(14, RoundingMode.HALF_UP);	// changed from 28 to 14; DATE:2015-07-31
-	}
+}

100_core/src/gplx/Decimal_adp__tst.java

@@ -1,6 +1,6 @@
 /*
 XOWA: the XOWA Offline Wiki Application
-Copyright (C) 2012-2020 gnosygnu@gmail.com
+Copyright (C) 2012-2021 gnosygnu@gmail.com
 
 XOWA is licensed under the terms of the General Public License (GPL) Version 3,
 or alternatively under the terms of the Apache License Version 2.0.
@@ -42,6 +42,9 @@ public class Decimal_adp__tst {
 		fxt.Test_parse("1.2E1", "12");
 		fxt.Test_parse("1.2e1", "12"); // 2020-08-27|ISSUE#:565|Parse 'e' as 'E'; PAGE:en.w:Huntington_Plaza
 	}
+	@Test public void parse_dot() {
+		fxt.Test_parse(".", "0"); // 2021-02-13|ISSUE#:838|Parse '.' as '0.'; PAGE:en.w:2019_FIVB_Volleyball_Women%27s_Challenger_Cup#Pool_A
+	}
 	@Test public void Truncate_decimal() {
 		fxt.Test_truncate_decimal("1", "1");
 		fxt.Test_truncate_decimal("1.1", "1");