public function testTruncateAmountOfBlocks()
{
if (!$this->canWrite) {
return;
}
$blockFile = new ezcArchiveBlockFile($this->file);
$i = 1;
while ($blockFile->next()) {
$i++;
}
$this->assertEquals(20, $i, "Expected 20 blocks in the file.");
$blockFile->seek(2);
$this->assertFalse($blockFile->isNullBlock(), "Didn't expect a null block.");
$blockFile->seek(3);
$this->assertFalse($blockFile->isNullBlock(), "Didn't expect a null block.");
$blockFile->seek(4);
$this->assertTrue($blockFile->isNullBlock(), "Expected a null block.");
// Give the block File to the archive.
$archive = new ezcArchiveV7Tar($blockFile);
$entry = $archive->current();
// A non rewinded block file, does that work?
$this->assertEquals("file1.txt", $entry->getPath());
$archive->truncate(1);
// keep the first file.
$archive->close();
$blockFile = new ezcArchiveBlockFile($this->file);
// Should be 20 blocks..
$i = 1;
while ($blockFile->next()) {
$i++;
}
$this->assertEquals(20, $i, "Expected 20 blocks in the file.");
$blockFile->seek(0);
$this->assertFalse($blockFile->isNullBlock(), "Didn't expect a null block.");
$blockFile->seek(1);
$this->assertFalse($blockFile->isNullBlock(), "Didn't expect a null block.");
$blockFile->seek(2);
$this->assertTrue($blockFile->isNullBlock(), "Expected a null block.");
unset($blockFile);
}
/**
* Initializes the Tar and tries to read the first entry from the archive.
*
* At initialization it sets the blockFactor to $blockFactor. Each tar archive
* has always $blockFactor of blocks ( 0, $blockFactor, 2 * $blockFactor, etc ).
*
* The Tar archive works with blocks, so therefore the first parameter expects
* the archive as a blockFile.
*
* @param ezcArchiveBlockFile $blockFile
* @param int $blockFactor
*/
public function __construct(ezcArchiveBlockFile $blockFile, $blockFactor = 20)
{
parent::__construct($blockFile, $blockFactor);
}
