Fixed bug #2888 : PSR12.Files.FileHeader blank line error with multiple namespaces in one file

Author: gsherwood

package.xml

@@ -34,6 +34,7 @@ http://pear.php.net/dtd/package-2.0.xsd">
     -- Thanks to Michał Bundyra for the patch
   - Fixed bug #2877 : PEAR.Functions.FunctionCallSignature false positive for array of functions
     -- Thanks to Vincent Langlet for the patch
+  - Fixed bug #2888 : PSR12.Files.FileHeader blank line error with multiple namespaces in one file
   - Fixed bug #2926 : phpcs hangs when using arrow functions that return heredoc
   - Fixed bug #2943 : Redundant semicolon added to a file when fixing PSR2.Files.ClosingTag.NotAllowed
   - Fixed bug #2977 : File::isReference() does not detect return by reference for closures
@@ -1106,6 +1107,7 @@ http://pear.php.net/dtd/package-2.0.xsd">
         <file baseinstalldir="PHP/CodeSniffer" name="FileHeaderUnitTest.13.inc" role="test" />
         <file baseinstalldir="PHP/CodeSniffer" name="FileHeaderUnitTest.14.inc" role="test" />
         <file baseinstalldir="PHP/CodeSniffer" name="FileHeaderUnitTest.15.inc" role="test" />
+        <file baseinstalldir="PHP/CodeSniffer" name="FileHeaderUnitTest.16.inc" role="test" />
         <file baseinstalldir="PHP/CodeSniffer" name="FileHeaderUnitTest.php" role="test" />
         <file baseinstalldir="PHP/CodeSniffer" name="ImportStatementUnitTest.inc" role="test" />
         <file baseinstalldir="PHP/CodeSniffer" name="ImportStatementUnitTest.inc.fixed" role="test" />

src/Standards/PSR12/Sniffs/Files/FileHeaderSniff.php

@@ -197,6 +197,13 @@ public function getHeaderLines(File $phpcsFile, $stackPtr)
                 break;
             case T_DECLARE:
             case T_NAMESPACE:
+                if (isset($tokens[$next]['scope_opener']) === true) {
+                    // If this statement is using bracketed syntax, it doesn't
+                    // apply to the entire files and so is not part of header.
+                    // The header has now ended and the main code block begins.
+                    break(2);
+                }
+
                 $end = $phpcsFile->findEndOfStatement($next);
 
                 $headerLines[] = [

src/Standards/PSR12/Tests/Files/FileHeaderUnitTest.16.inc

@@ -0,0 +1,13 @@
+<?php
+
+namespace Foo {
+
+    use Baz;
+
+}
+
+namespace Bar {
+
+    use Baz;
+
+}