Add truncate option

README.md

@@ -31,6 +31,7 @@ $rotation
     ->compress() // Optional, compress the file after rotated. Default false
     ->files(30) // Optional, files are rotated 30 times before being removed. Default 366
     ->minSize(1024) // Optional, are rotated when they grow bigger than 1024 bytes. Default 0
+    ->truncate() // Optional, truncate the original log file in place after creating a copy, instead of moving the old log file.
     ->then(function ($filenameTarget, $filenameRotated) {}) // Optional, to get filename target and original filename
     ->catch(function (RotationFailed $exception) {}) // Optional, to catch a exception in rotating
     ->rotate('file.log');
@@ -46,6 +47,7 @@ $rotation = new Rotation([
     'files' => 1,
     'compress' => true,
     'min-size' => 10,
+    'truncate' => false,
     'then' => function ($filename) {},
     'catch' => function (RotationFailed $exception) {},
 ]);

src/Rotation.php

@@ -17,6 +17,8 @@ class Rotation
 
     private int $_minSize = 0;
 
+    private bool $_truncate = false;
+
     private $thenCallback = null;
 
     public function __construct(array $options = [])
@@ -25,6 +27,7 @@ public function __construct(array $options = [])
 
         $this->methodsOptionables([
             'compress',
+            'truncate',
             'minSize',
             'files',
             'then',
@@ -60,6 +63,20 @@ public function compress(bool $compress = true): self
         return $this;
     }
 
+    /**
+     * Truncate the original log file in place after creating a copy, instead of
+     * moving the old log file.
+     *
+     * It can be used when some program cannot be told to close its logfile and
+     * thus might continue writing (appending) to the previous log file forever.
+     */
+    public function truncate(bool $truncate = true): self
+    {
+        $this->_truncate = $truncate;
+
+        return $this;
+    }
+
     /**
      * Log files are rotated when they grow bigger than size bytes.
      */
@@ -95,18 +112,28 @@ public function rotate(string $filename): bool
             return false;
         }
 
-        $filenameRotated = $this->runProcessor(
+        $fileTemporary = $this->_truncate
+            ? $this->copyAndTruncate($filename)
+            : $this->move($filename);
+
+        if (is_null($fileTemporary)) {
+            return false;
+        }
+
+        $fileTarget = $this->runProcessor(
             $filename,
-            $this->moveContentToTempFile($filename)
+            $fileTemporary
         );
 
-        $filenameRotated = is_null($filenameRotated)
-            ? $filenameRotated
-            : $this->runCompress($filenameRotated);
+        if (is_null($fileTarget)) {
+            return false;
+        }
 
-        $this->sucessfull($filename, $filenameRotated);
+        $fileTarget = $this->runCompress($fileTarget);
 
-        return !empty($filenameRotated);
+        $this->sucessfull($filename, $fileTarget);
+
+        return true;
     }
 
     /**
@@ -186,9 +213,9 @@ private function fileIsValid(string $filename): bool
     }
 
     /**
-     * move data to temp file and truncate.
+     * copy data to temp file and truncate.
      */
-    private function moveContentToTempFile(string $filename): ?string
+    private function copyAndTruncate(string $filename): ?string
     {
         clearstatcache();
 
@@ -247,4 +274,24 @@ private function moveContentToTempFile(string $filename): ?string
 
         return $filenameTarget;
     }
+
+    private function move(string $filename): ?string
+    {
+        clearstatcache();
+
+        $filenameTarget = tempnam(dirname($filename), 'LOG');
+
+        if (!rename($filename, $filenameTarget)) {
+            $this->exception(
+                new Exception(
+                    sprintf('the file %s not can move to temp file %s.', $filename, $filenameTarget),
+                    22
+                )
+            );
+
+            return null;
+        }
+
+        return $filenameTarget;
+    }
 }

tests/Compress/GzTest.php

@@ -7,7 +7,7 @@
 
 class GzTest extends TestCase
 {
-    public function test_rotation_processor_with_gz_processor()
+    public function testRotationProcessorWithGzProcessor()
     {
         $rotation = new Rotation();
 
@@ -27,10 +27,10 @@ public function test_rotation_processor_with_gz_processor()
             $this->assertEquals(self::DIR_WORK.'file.log.1.gz', $fileRotated);
         })->rotate(self::DIR_WORK.'file.log');
 
-        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
+        // $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
 
         $this->assertFileExists(self::DIR_WORK.'file.log.1.gz');
 
-        $this->assertEquals($content, implode("", gzfile(self::DIR_WORK.'file.log.1.gz')));
+        $this->assertEquals($content, implode('', gzfile(self::DIR_WORK.'file.log.1.gz')));
     }
 }

tests/OptionTest.php

@@ -3,24 +3,24 @@
 namespace Cesargb\Log\Test;
 
 use Cesargb\Log\Rotation;
-use Cesargb\Log\Test\TestCase;
 
 class OptionTest extends TestCase
 {
-    public function test_pass_options()
+    public function testPassOptions()
     {
         $rotation = new Rotation([
             'files' => 1,
             'compress' => true,
             'min-size' => 10,
+            'truncate' => false,
             'then' => function ($filename) {},
             'catch' => function ($error) {},
         ]);
 
         $this->assertNotNull($rotation);
     }
 
-    public function test_catch_exceptio_if_method_is_not_permited()
+    public function testCatchExceptioIfMethodIsNotPermited()
     {
         $this->expectException(\LogicException::class);
 

tests/Processors/RotativeProcessorTest.php

@@ -7,7 +7,7 @@
 
 class RotativeProcessorTest extends TestCase
 {
-    public function test_rotation_processor()
+    public function testRotationProcessor()
     {
         $maxFiles = 5;
 
@@ -20,7 +20,7 @@ public function test_rotation_processor()
             $rotation->rotate(self::DIR_WORK.'file.log');
         }
 
-        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
+        // $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
 
         foreach (range(1, $maxFiles) as $n) {
             $this->assertFileExists(self::DIR_WORK.'file.log.'.$n);
@@ -29,7 +29,7 @@ public function test_rotation_processor()
         $this->assertFalse(is_file(self::DIR_WORK.'file.log.'.($maxFiles + 1)));
     }
 
-    public function test_rotation_processor_with_gz_processor()
+    public function testRotationProcessorWithGzProcessor()
     {
         $maxFiles = 5;
 
@@ -43,7 +43,7 @@ public function test_rotation_processor_with_gz_processor()
             $rotation->rotate(self::DIR_WORK.'file.log');
         }
 
-        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
+        // $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
 
         foreach (range(1, $maxFiles) as $n) {
             $this->assertFileExists(self::DIR_WORK."file.log.{$n}.gz");

tests/RotationTest.php

@@ -28,16 +28,14 @@ public function testNotRotateIfFileIsEmpty()
         $this->assertFileDoesNotExist(self::DIR_WORK.'file.log.1');
     }
 
-    public function testOptionNocompress()
+    public function testRotationDefault()
     {
         file_put_contents(self::DIR_WORK.'file.log', microtime(true));
 
         $rotation = new Rotation();
 
         $rotation->rotate(self::DIR_WORK.'file.log');
 
-        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
-
         $this->assertFileExists(self::DIR_WORK.'file.log.1');
     }
 
@@ -104,4 +102,30 @@ public function testOptionMinsize()
 
         $this->assertFileExists(self::DIR_WORK.'file.log.1');
     }
+
+    public function testRotationTruncate()
+    {
+        file_put_contents(self::DIR_WORK.'file.log', microtime(true));
+
+        $rotation = new Rotation();
+
+        $rotation->truncate()->rotate(self::DIR_WORK.'file.log');
+
+        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
+
+        $this->assertFileExists(self::DIR_WORK.'file.log.1');
+    }
+
+    public function testOptionTruncateAndCompress()
+    {
+        file_put_contents(self::DIR_WORK.'file.log', microtime(true));
+
+        $rotation = new Rotation();
+
+        $rotation->compress()->truncate()->rotate(self::DIR_WORK.'file.log');
+
+        $this->assertStringEqualsFile(self::DIR_WORK.'file.log', '');
+
+        $this->assertFileExists(self::DIR_WORK.'file.log.1.gz');
+    }
 }