Easy to initialize the output zip file.

CHANGELOG.md

@@ -0,0 +1,5 @@
+## 2.2.0 (2017-03-02)
+
+Features:
+  - create output object `ZipOutputFile` from `ZipFile` in method `ZipFile::edit()`.
+  - create output object `ZipOutputFile` from filename in static method `ZipOutputFile::openFromFile(string $filename)`.

README.md

@@ -149,6 +149,10 @@ Get entry content.
 ```php
 $data = $zipFile->getEntryContent($entryName);
 ```
+Edit zip archive
+```php
+$zipOutputFile = $zipFile->edit();
+```
 Close zip archive.
 ```php
 $zipFile->close();
@@ -162,6 +166,11 @@ $zipOutputFile = \PhpZip\ZipOutputFile::create();
 ```
 Open zip file from update.
 ```php
+$filename = "file.zip";
+$zipOutputFile = \PhpZip\ZipOutputFile::openFromFile($filename);
+```
+or
+```php
 // initial ZipFile
 $zipFile = \PhpZip\ZipFile::openFromFile($filename);
 
@@ -169,23 +178,28 @@ $zipFile = \PhpZip\ZipFile::openFromFile($filename);
 $zipOutputFile = new \PhpZip\ZipOutputFile($zipFile);
 // or
 $zipOutputFile = \PhpZip\ZipOutputFile::openFromZipFile($zipFile);
+// or
+$zipOutputFile = $zipFile->edit();
 ```
 Add entry from file.
 ```php
 $zipOutputFile->addFromFile($filename); // $entryName == basename($filename);
 $zipOutputFile->addFromFile($filename, $entryName);
 $zipOutputFile->addFromFile($filename, $entryName, ZipEntry::METHOD_DEFLATED);
+$zipOutputFile->addFromFile($filename, $entryName, ZipEntry::METHOD_STORED); // no compress
 $zipOutputFile->addFromFile($filename, null, ZipEntry::METHOD_BZIP2); // $entryName == basename($filename);
 ```
 Add entry from string data.
 ```php
-$zipOutputFile->addFromString($entryName, $data)
-$zipOutputFile->addFromString($entryName, $data, ZipEntry::METHOD_DEFLATED)
+$zipOutputFile->addFromString($entryName, $data);
+$zipOutputFile->addFromString($entryName, $data, ZipEntry::METHOD_DEFLATED);
+$zipOutputFile->addFromString($entryName, $data, ZipEntry::METHOD_STORED); // no compress
 ```
 Add entry from stream.
 ```php
-$zipOutputFile->addFromStream($stream, $entryName)
-$zipOutputFile->addFromStream($stream, $entryName, ZipEntry::METHOD_DEFLATED)
+$zipOutputFile->addFromStream($stream, $entryName);
+$zipOutputFile->addFromStream($stream, $entryName, ZipEntry::METHOD_DEFLATED);
+$zipOutputFile->addFromStream($stream, $entryName, ZipEntry::METHOD_STORED); // no compress
 ```
 Add empty dir
 ```php
@@ -446,7 +460,7 @@ $zipOutputFile->close(); // close output file, release all streams
 $zipFile = \PhpZip\ZipFile::openFromFile($outputFilename); // open zip archive from file
 $zipFile->extractTo($outputDirExtract); // extract files to dir
 
-$zipOutputFile = \PhpZip\ZipOutputFile::openFromZipFile($zipFile); // create zip output archive for update
+$zipOutputFile = $zipFile->edit(); // create zip output archive for update
 $zipOutputFile->deleteFromRegex('~^\.~'); // delete all hidden (Unix) files
 $zipOutputFile->addFromString('dir/file.txt', 'Test file'); // add files from string contents
 $zipOutputFile->saveAsFile($outputFilename); // update zip file

src/PhpZip/ZipFile.php

@@ -157,6 +157,13 @@ class ZipFile implements \Countable, \ArrayAccess, \Iterator, ZipConstants
         return $zipFile;
     }
 
+    /**
+     * @return ZipOutputFile
+     */
+    public function edit(){
+        return ZipOutputFile::openFromZipFile($this);
+    }
+
     /**
      * Check zip file signature
      *

src/PhpZip/ZipOutputFile.php

@@ -152,6 +152,22 @@ class ZipOutputFile implements \Countable, \ArrayAccess, \Iterator, ZipConstants
         return new self($zipFile);
     }
 
+    /**
+     * Open zip file from update.
+     *
+     * @param string $filename
+     * @return ZipOutputFile
+     * @throws IllegalArgumentException
+     * @see ZipOutputFile::__construct()
+     */
+    public static function openFromFile($filename)
+    {
+        if (empty($filename)) {
+            throw new IllegalArgumentException("Zip file is null");
+        }
+        return new self(ZipFile::openFromFile($filename));
+    }
+
     /**
      * Count zip entries.
      *

tests/PhpZip/ZipTest.php

@@ -279,11 +279,9 @@ class ZipTest extends ZipTestCase
 
         self::assertCorrectZipArchive($this->outputFilename);
 
-        $zipFile = ZipFile::openFromFile($this->outputFilename);
-        $outputZipFile = new ZipOutputFile($zipFile);
+        $outputZipFile = ZipOutputFile::openFromFile($this->outputFilename);
         $outputZipFile->rename($oldName, $newName);
         $outputZipFile->saveAsFile($this->outputFilename);
-        $zipFile->close();
 
         self::assertCorrectZipArchive($this->outputFilename);
 
@@ -309,7 +307,7 @@ class ZipTest extends ZipTestCase
         self::assertCorrectZipArchive($this->outputFilename);
 
         $zipFile = ZipFile::openFromFile($this->outputFilename);
-        $outputZipFile = new ZipOutputFile($zipFile);
+        $outputZipFile = $zipFile->edit();
         $outputZipFile->deleteFromName($deleteEntryName);
         $outputZipFile->saveAsFile($this->outputFilename);
         $zipFile->close();
@@ -1087,6 +1085,7 @@ class ZipTest extends ZipTestCase
         $zipFile = ZipFile::openFromFile($this->outputFilename);
         self::assertEquals($zipFile->count(), $countFiles);
         foreach ($zipFile as $entry => $content) {
+            strlen($content);
         }
         $zipFile->close();
     }