Fix in LicenseHeaderStep which treats address as copyright year (#844 fixes #716)

Author: nedtwigg

CHANGES.md

@@ -10,6 +10,8 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Fixed
+* LicenseHeaderStep treats address as copyright year ([#716](https://github.com/diffplug/spotless/issues/716))
 
 ## [2.13.2] - 2021-04-12
 ### Fixed

lib/src/main/java/com/diffplug/spotless/generic/LicenseHeaderStep.java

@@ -273,14 +273,22 @@ private String calculateYearBySearching(String content) {
 			Matcher yearMatcher = YYYY.matcher(content);
 			if (yearMatcher.find()) {
 				String firstYear = yearMatcher.group();
-				String secondYear;
+
+				String secondYear = null;
 				if (updateYearWithLatest) {
 					secondYear = firstYear.equals(yearToday) ? null : yearToday;
-				} else if (yearMatcher.find(yearMatcher.end() + 1)) {
-					secondYear = yearMatcher.group();
 				} else {
-					secondYear = null;
+					String contentWithSecondYear = content.substring(yearMatcher.end() + 1);
+					int endOfLine = contentWithSecondYear.indexOf('\n');
+					if (endOfLine != -1) {
+						contentWithSecondYear = contentWithSecondYear.substring(0, endOfLine);
+					}
+					Matcher secondYearMatcher = YYYY.matcher(contentWithSecondYear);
+					if (secondYearMatcher.find()) {
+						secondYear = secondYearMatcher.group();
+					}
 				}
+
 				if (secondYear == null) {
 					return firstYear;
 				} else {

plugin-gradle/CHANGES.md

@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
+### Fixed
+* LicenseHeaderStep treats address as copyright year ([#716](https://github.com/diffplug/spotless/issues/716))
 
 ## [5.12.1] - 2021-04-13
 ### Fixed

plugin-maven/CHANGES.md

@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Fixed
+* LicenseHeaderStep treats address as copyright year ([#716](https://github.com/diffplug/spotless/issues/716))
 
 ## [2.10.1] - 2021-04-13
 ### Fixed

testlib/src/test/java/com/diffplug/spotless/generic/LicenseHeaderStepTest.java

@@ -120,6 +120,18 @@ public void should_remove_header_when_empty() throws Throwable {
 				.test(getTestResource("license/HasLicense.test"), getTestResource("license/MissingLicense.test"));
 	}
 
+	private String licenceWithAddress() {
+		return "Copyright © $YEAR FooBar Inc. All Rights Reserved.\n" +
+				" *\n" +
+				" * Use of this software is covered by inscrutable legal protection and\n" +
+				" * complex automation. Violaters of undisclosed terms must expect\n" +
+				" * unforeseen consequences.\n" +
+				" *\n" +
+				" * FooBar, Inc.\n" +
+				" * 9 Food Truck\n" +
+				" * Perry Derry, TX 55656 USA";
+	}
+
 	private String header(String contents) throws IOException {
 		return "/*\n" +
 				" * " + contents + "\n" +
@@ -212,4 +224,20 @@ public void should_apply_license_containing_YEAR_token_in_range() throws Throwab
 		FormatterStep step = LicenseHeaderStep.headerDelimiter(header(HEADER_WITH_RANGE_TO_$YEAR), package_).withYearMode(YearMode.UPDATE_TO_TODAY).build();
 		StepHarness.forStep(step).test(hasHeaderWithRangeAndWithYearTo("2015"), hasHeaderWithRangeAndWithYearTo(currentYear()));
 	}
+
+	@Test
+	public void should_update_year_for_license_with_address() throws Throwable {
+		FormatterStep step = LicenseHeaderStep.headerDelimiter(header(licenceWithAddress()), package_).withYearMode(YearMode.UPDATE_TO_TODAY).build();
+		StepHarness.forStep(step).test(
+				hasHeader(licenceWithAddress().replace("$YEAR", "2015")),
+				hasHeader(licenceWithAddress().replace("$YEAR", "2015-2021")));
+	}
+
+	@Test
+	public void should_preserve_year_for_license_with_address() throws Throwable {
+		FormatterStep step = LicenseHeaderStep.headerDelimiter(header(licenceWithAddress()), package_).withYearMode(YearMode.PRESERVE).build();
+		StepHarness.forStep(step).test(
+				hasHeader(licenceWithAddress().replace("$YEAR", "2015").replace("FooBar Inc. All", "FooBar Inc.  All")),
+				hasHeader(licenceWithAddress().replace("$YEAR", "2015")));
+	}
 }