Add checkstyle printer

README.md

@@ -95,8 +95,6 @@ The ``--exclude-path`` option will exclude a path, which must be relative to the
 
 The ``--exclude`` option will exclude a directory, which must be relative to the source, from the code analysis. Multiple values are allowed (e.g. --exclude=tests --exclude=examples).
 
-The ``--extensions`` option lets you extend the code analysis. The provided extensions must be comma separated.
-
 The ``--hint`` option will suggest replacements for magic numbers based on your codebase constants.
 
 The ``--ignore-funcs`` option will exclude a list of comma separated functions from the code analysis, when using the "argument" extension. Defaults to `intval`, `floatval`, `strval`.
@@ -118,6 +116,11 @@ The ``--suffixes`` option will configure a comma separated list of valid source
 The ``--whitelist`` option will only process the files listed in the file specified. This is useful for incremental analysis.
 
 The ``--xml-output`` option will generate an report in an Xml format to the path specified by the option.
+
+The ``--checkstyle-output`` option will generate a report in checkstyle xml format to the path specified by the option.
+
+The ``--extensions`` option lets you extend the code analysis. The provided extensions must be comma separated.
+
 **By default it analyses conditions, return statements, and switch cases.**
 
 #### Extensions

src/Console/Command.php

@@ -137,6 +137,12 @@ protected function configure(): void
                 InputOption::VALUE_REQUIRED,
                 'Generate an XML output to the specified path'
             )
+            ->addOption(
+                'checkstyle-output',
+                null,
+                InputOption::VALUE_REQUIRED,
+                'Generate an checkstyle output to the specified path'
+            )
             ->addOption(
                 'whitelist',
                 null,
@@ -198,6 +204,11 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $xmlOutput->printData($output, $fileReportList, $hintList);
         }
 
+        if ($input->getOption('checkstyle-output')) {
+            $checkStyleOutput = new Printer\CheckStyle($input->getOption('checkstyle-output'));
+            $checkStyleOutput->printData($output, $fileReportList, $hintList);
+        }
+
         if ($output->getVerbosity() !== OutputInterface::VERBOSITY_QUIET) {
             $output->writeln('');
             $printer->printData($output, $fileReportList, $hintList);

src/Printer/CheckStyle.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Povils\PHPMND\Printer;
+
+use Povils\PHPMND\FileReportList;
+use Povils\PHPMND\HintList;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Class CheckStyle
+ *
+ * @package Povils\PHPMND\Printer
+ */
+class CheckStyle implements Printer
+{
+    /** @var string */
+    private $outputPath;
+
+    public function __construct(string $outputPath)
+    {
+        $this->outputPath = $outputPath;
+    }
+
+    public function printData(OutputInterface $output, FileReportList $fileReportList, HintList $hintList): void
+    {
+        $output->writeln('Generate checkstyle report output...');
+        $dom = new \DOMDocument('1.0', 'UTF-8');
+        $rootNode = $dom->createElement('checkstyle');
+
+        $total = 0;
+        foreach ($fileReportList->getFileReports() as $fileReport) {
+            $fileNode = $dom->createElement('file');
+            $fileNode->setAttribute('name', $fileReport->getFile()->getRelativePathname());
+
+            $entries = $fileReport->getEntries();
+            $total += count($entries);
+            foreach ($entries as $entry) {
+                $snippet = Util::getSnippet($fileReport->getFile()->getContents(), $entry['line'], $entry['value']);
+                $errorNode = $dom->createElement('error');
+                $errorNode->setAttribute('line', $entry['line']);
+                $errorNode->setAttribute('column', $snippet['col']);
+                $errorNode->setAttribute('severity', 'error');
+                $errorNode->setAttribute('message', sprintf('Magic number: %s', $entry['value']));
+
+                $fileNode->appendChild($errorNode);
+            }
+            $rootNode->appendChild($fileNode);
+        }
+
+        $dom->appendChild($rootNode);
+
+        $dom->save($this->outputPath);
+
+        $output->writeln('Total of Magic Numbers ' . $total);
+        $output->writeln('checkstyle XML generated at '. $this->outputPath);
+    }
+}

src/Printer/Util.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Povils\PHPMND\Printer;
+
+/**
+ * @internal
+ */
+abstract class Util
+{
+
+    /**
+     * Get the snippet and information about it
+     *
+     * @param string $content
+     * @param int $line
+     * @param int|string $text
+     * @return array{snippet: string, line: int, magic: int|string, col: false|int}
+     */
+    final public static function getSnippet(string $content, int $line, $text): array
+    {
+        $content = str_replace(array("\r\n", "\r"), "\n", $content);
+        $lines = explode("\n", $content);
+
+        $lineContent = array_slice($lines, $line-1, 1);
+        $lineContent = reset($lineContent);
+        $start = strpos($lineContent, $text.'');
+
+        return [
+            'snippet' => $lineContent,
+            'line' => $line,
+            'magic' => $text,
+            'col' => $start
+        ];
+    }
+}

src/Printer/Xml.php

@@ -42,7 +42,7 @@ public function printData(OutputInterface $output, FileReportList $fileReportLis
 
             $total += count($entries);
             foreach ($entries as $entry) {
-                $snippet = $this->getSnippet($fileReport->getFile()->getContents(), $entry['line'], $entry['value']);
+                $snippet = Util::getSnippet($fileReport->getFile()->getContents(), $entry['line'], $entry['value']);
                 $entryNode = $dom->createElement('entry');
                 $entryNode->setAttribute('line', $entry['line']);
                 $entryNode->setAttribute('start', $snippet['col']);
@@ -80,29 +80,4 @@ public function printData(OutputInterface $output, FileReportList $fileReportLis
 
         $output->writeln('XML generated at '.$this->outputPath);
     }
-
-    /**
-     * Get the snippet and information about it
-     *
-     * @param string $content
-     * @param int $line
-     * @param int|string $text
-     * @return array
-     */
-    private function getSnippet(string $content, int $line, $text): array
-    {
-        $content = str_replace(array("\r\n", "\r"), "\n", $content);
-        $lines = explode("\n", $content);
-
-        $lineContent = array_slice($lines, $line-1, 1);
-        $lineContent = reset($lineContent);
-        $start = strpos($lineContent, $text.'');
-
-        return [
-            'snippet' => $lineContent,
-            'line' => $line,
-            'magic' => $text,
-            'col' => $start
-        ];
-    }
 }

tests/Printer/CheckStyleTest.php

@@ -0,0 +1,74 @@
+<?php
+
+namespace Povils\PHPMND\Tests\Printer;
+
+use Povils\PHPMND\FileReport;
+use Povils\PHPMND\FileReportList;
+use Povils\PHPMND\HintList;
+use Povils\PHPMND\Printer\CheckStyle;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Output\NullOutput;
+use Symfony\Component\Finder\SplFileInfo;
+
+/**
+ * Class XmlTest
+ *
+ * @package Povils\PHPMND\Tests
+ */
+class CheckStyleTest extends TestCase
+{
+    public function testEmpty() : void
+    {
+        $outputPath = tempnam(sys_get_temp_dir(), 'phpmnd_');
+
+        $xmlPrinter = new CheckStyle($outputPath);
+        $xmlPrinter->printData(new NullOutput(), new FileReportList(), new HintList());
+
+        $this->assertXmlStringEqualsXmlString(
+            <<<'XML'
+<?xml version="1.0" encoding="UTF-8"?>
+<checkstyle />
+XML
+            ,
+            file_get_contents($outputPath)
+        );
+    }
+
+    public function testPrintData() : void
+    {
+        $testMagicNumber = 12;
+
+        $splFileInfo = $this->createMock(SplFileInfo::class);
+        $splFileInfo
+            ->method('getRelativePathname')
+            ->willReturn('Foo/Bar.php');
+        $splFileInfo
+            ->method('getContents')
+            ->willReturn(sprintf(
+                '$rootNode->setAttribute(\'fileCount\', count($fileReportList->getFileReports()) + %d);',
+                $testMagicNumber
+            ));
+
+        $fileReport = new FileReport($splFileInfo);
+        $fileReport->addEntry(1, $testMagicNumber);
+        $fileReportList = new FileReportList();
+        $fileReportList->addFileReport($fileReport);
+
+        $outputPath = tempnam(sys_get_temp_dir(), 'phpmnd_');
+        $xmlPrinter = new CheckStyle($outputPath);
+        $xmlPrinter->printData(new NullOutput(), $fileReportList, new HintList());
+
+        $this->assertXmlStringEqualsXmlString(
+            <<<'XML'
+<?xml version="1.0" encoding="UTF-8"?>
+<checkstyle>
+    <file name="Foo/Bar.php">
+        <error line="1" column="80" severity="error" message="Magic number: 12"/>
+    </file>
+</checkstyle>
+XML
+            ,
+            file_get_contents($outputPath)
+        );
+    }
+}

tests/Printer/XmlTest.php

@@ -30,7 +30,7 @@ public function testEmpty() : void
 <?xml version="1.0"?>
 <phpmnd version="%%PHPMND_VERSION%%" fileCount="0" errorCount="0"><files/></phpmnd>
 XML
-	,
+            ,
             $outputPath
         );
     }
@@ -45,7 +45,10 @@ public function testPrintData() : void
             ->willReturn('Foo/Bar.php');
         $splFileInfo
             ->method('getContents')
-            ->willReturn(sprintf('$rootNode->setAttribute(\'fileCount\', count($fileReportList->getFileReports()) + %d);', $testMagicNumber));
+            ->willReturn(sprintf(
+                '$rootNode->setAttribute(\'fileCount\', count($fileReportList->getFileReports()) + %d);',
+                $testMagicNumber
+            ));
 
         $fileReport = new FileReport($splFileInfo);
         $fileReport->addEntry(1, $testMagicNumber);
@@ -66,7 +69,9 @@ public function testPrintData() : void
     <files>
         <file errors="1" path="Foo/Bar.php">
             <entry end="82" line="1" start="80">
-                <snippet><![CDATA[$rootNode->setAttribute('fileCount', count($fileReportList->getFileReports()) + 12);]]></snippet>
+                <snippet>
+                    <![CDATA[$rootNode->setAttribute('fileCount', count($fileReportList->getFileReports()) + 12);]]>
+                </snippet>
                 <suggestions>
                     <suggestion>Povils\PHPMND\Tests\Printer\XmlTest::WELL_KNOWN_MAGIC</suggestion>
                 </suggestions>
@@ -75,7 +80,7 @@ public function testPrintData() : void
     </files>
 </phpmnd>
 XML
-	,
+            ,
             $outputPath
         );
     }