TarTask::main()   D
last analyzed

Complexity

Conditions 19
Paths 75

Size

Total Lines 88
Code Lines 53

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 380

Importance

Changes 0
Metric Value
eloc 53
dl 0
loc 88
ccs 0
cts 56
cp 0
rs 4.5166
c 0
b 0
f 0
cc 19
nc 75
nop 0
crap 380

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

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<?php
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/**
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * This software consists of voluntary contributions made by many individuals
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 * and is licensed under the LGPL. For more information please see
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 * <http://phing.info>.
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 */
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namespace Phing\Task\Ext\Archive;
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use Archive_Tar;
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use PEAR;
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use Phing\Exception\BuildException;
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use Phing\Io\IOException;
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use Phing\Io\File;
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use Phing\Io\SourceFileScanner;
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use Phing\Mapper\MergeMapper;
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use Phing\Project;
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use Phing\Task\System\MatchingTask;
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use Phing\Type\FileSet;
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/**
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 * Creates a tar archive using PEAR Archive_Tar.
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 *
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 * @author Hans Lellelid <[email protected]> (Phing)
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 * @author Stefano Mazzocchi <[email protected]> (Ant)
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 * @author Stefan Bodewig <[email protected]> (Ant)
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 * @author Magesh Umasankar
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 *
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 * @package phing.tasks.ext
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 */
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class TarTask extends MatchingTask
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{
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    public const TAR_NAMELEN = 100;
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    public const WARN = "warn";
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    public const FAIL = "fail";
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    public const OMIT = "omit";
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    /**
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     * @var File
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     */
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    private $tarFile;
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    /**
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     * @var File
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     */
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    private $baseDir;
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    private $includeEmpty = true; // Whether to include empty dirs in the TAR
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    private $longFileMode = "warn";
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    /**
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     * @var TarFileSet[]
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     */
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    private $filesets = [];
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    /**
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     * Indicates whether the user has been warned about long files already.
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     */
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    private $longWarningGiven = false;
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    /**
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     * Compression mode.  Available options "gzip", "bzip2", "none" (null).
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     */
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    private $compression = null;
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    /**
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     * File path prefix in the tar archive
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     *
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     * @var string
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     */
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    private $prefix = null;
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    /**
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     * Ensures that PEAR lib exists.
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     */
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    public function init()
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    {
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        if (!class_exists('Archive_Tar')) {
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            throw new BuildException("You must have installed the pear/archive_tar package use TarTask.");
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        }
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    }
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    /**
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     * Add a new fileset
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     *
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     * @return FileSet
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     */
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    public function createTarFileSet()
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    {
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        $this->fileset = new TarFileSet();
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        $this->filesets[] = $this->fileset;
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        return $this->fileset;
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    }
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    /**
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     * Add a new fileset.  Alias to createTarFileSet() for backwards compatibility.
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     *
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     * @return FileSet
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     * @see    createTarFileSet()
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     */
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    public function createFileSet()
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    {
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        $this->fileset = new TarFileSet();
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        $this->filesets[] = $this->fileset;
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        return $this->fileset;
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    }
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    /**
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     * Set is the name/location of where to create the tar file.
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     *
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     * @param File $destFile The output of the tar
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     */
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    public function setDestFile(File $destFile)
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    {
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        $this->tarFile = $destFile;
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    }
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    /**
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     * This is the base directory to look in for things to tar.
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     *
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     * @param File $baseDir
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     */
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    public function setBasedir(File $baseDir)
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    {
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        $this->baseDir = $baseDir;
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    }
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    /**
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     * Set the include empty dirs flag.
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     *
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     * @param boolean $bool Flag if empty dirs should be tarred too
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     *
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     * @return void
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     */
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    public function setIncludeEmptyDirs($bool)
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    {
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        $this->includeEmpty = (bool) $bool;
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    }
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    /**
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     * Set how to handle long files, those with a path&gt;100 chars.
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     * Optional, default=warn.
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     * <p>
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     * Allowable values are
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     * <ul>
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     * <li>  truncate - paths are truncated to the maximum length
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     * <li>  fail - paths greater than the maximim cause a build exception
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     * <li>  warn - paths greater than the maximum cause a warning and GNU is used
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     * <li>  gnu - GNU extensions are used for any paths greater than the maximum.
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     * <li>  omit - paths greater than the maximum are omitted from the archive
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     * </ul>
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     *
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     * @param $mode
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     */
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    public function setLongfile($mode)
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    {
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        $this->longFileMode = $mode;
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    }
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    /**
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     * Set compression method.
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     * Allowable values are
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     * <ul>
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     * <li>  none - no compression
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     * <li>  gzip - Gzip compression
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     * <li>  bzip2 - Bzip2 compression
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     * <li>  lzma2 - Lzma2 compression
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     * </ul>
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     *
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     * @param string $mode
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     */
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    public function setCompression($mode)
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    {
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        switch ($mode) {
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            case "gzip":
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                $this->compression = "gz";
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                break;
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            case "bzip2":
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                $this->compression = "bz2";
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                break;
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            case "lzma2":
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                $this->compression = "lzma2";
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                break;
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            case "none":
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                $this->compression = null;
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                break;
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            default:
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                $this->log("Ignoring unknown compression mode: " . $mode, Project::MSG_WARN);
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                $this->compression = null;
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        }
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    }
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    /**
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     * Sets the file path prefix for file in the tar file.
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     *
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     * @param string $prefix Prefix
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     *
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     * @return void
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     */
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    public function setPrefix($prefix)
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    {
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        $this->prefix = $prefix;
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    }
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    /**
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     * do the work
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     *
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     * @throws BuildException
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     */
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    public function main()
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    {
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        if ($this->tarFile === null) {
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            throw new BuildException("tarfile attribute must be set!", $this->getLocation());
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        }
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        if ($this->tarFile->exists() && $this->tarFile->isDirectory()) {
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            throw new BuildException("tarfile is a directory!", $this->getLocation());
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        }
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        if ($this->tarFile->exists() && !$this->tarFile->canWrite()) {
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            throw new BuildException("Can not write to the specified tarfile!", $this->getLocation());
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        }
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        // shouldn't need to clone, since the entries in filesets
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        // themselves won't be modified -- only elements will be added
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        $savedFileSets = $this->filesets;
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        try {
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            if ($this->baseDir !== null) {
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                if (!$this->baseDir->exists()) {
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                    throw new BuildException(
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                        "basedir '" . (string) $this->baseDir . "' does not exist!",
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                        $this->getLocation()
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                    );
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                }
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                if (empty($this->filesets)) { // if there weren't any explicit filesets specivied, then
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                    // create a default, all-inclusive fileset using the specified basedir.
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                    $mainFileSet = new TarFileSet($this->fileset);
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                    $mainFileSet->setDir($this->baseDir);
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                    $mainFileSet->setProject($this->project);
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                    $this->filesets[] = $mainFileSet;
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                }
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            }
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            if (empty($this->filesets)) {
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                throw new BuildException(
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                    "You must supply either a basedir "
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                    . "attribute or some nested filesets.",
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                    $this->getLocation()
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                );
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            }
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            // check if tar is out of date with respect to each fileset
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            if ($this->tarFile->exists() && $this->isArchiveUpToDate()) {
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                $this->log("Nothing to do: " . $this->tarFile->__toString() . " is up to date.", Project::MSG_INFO);
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                return;
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            }
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            $this->log("Building tar: " . $this->tarFile->__toString(), Project::MSG_INFO);
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            $tar = new Archive_Tar($this->tarFile->getAbsolutePath(), $this->compression);
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            $pear = new PEAR();
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            if ($pear::isError($tar->error_object)) {
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                throw new BuildException($tar->error_object->getMessage());
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            }
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            foreach ($this->filesets as $fs) {
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                $files = $fs->getIterator($this->includeEmpty);
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                if (count($files) > 1 && strlen($fs->getFullpath()) > 0) {
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                    throw new BuildException(
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                        "fullpath attribute may only "
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                        . "be specified for "
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                        . "filesets that specify a "
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                        . "single file."
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                    );
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                }
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                $fsBasedir = $fs->getDir($this->project);
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                $filesToTar = [];
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                for ($i = 0, $fcount = count($files); $i < $fcount; $i++) {
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                    $f = new File($fsBasedir, $files[$i]);
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                    $filesToTar[] = $f->getAbsolutePath();
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                    $this->log("Adding file " . $f->getPath() . " to archive.", Project::MSG_VERBOSE);
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                }
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                $tar->addModify($filesToTar, $this->prefix, $fsBasedir->getAbsolutePath());
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                if ($pear::isError($tar->error_object)) {
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                    throw new BuildException($tar->error_object->getMessage());
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                }
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            }
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        } catch (IOException $ioe) {
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            $msg = "Problem creating TAR: " . $ioe->getMessage();
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            $this->filesets = $savedFileSets;
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            throw new BuildException($msg, $ioe, $this->getLocation());
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        }
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        $this->filesets = $savedFileSets;
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    }
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    /**
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     * @param  \ArrayIterator $files array of filenames
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     * @param  File $dir
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     *
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     * @return boolean
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     */
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    protected function areFilesUpToDate($files, $dir)
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    {
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        $sfs = new SourceFileScanner($this);
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        $mm = new MergeMapper();
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        $mm->setTo($this->tarFile->getAbsolutePath());
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        return count($sfs->restrict($files, $dir, null, $mm)) == 0;
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    }
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    /**
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     * @return bool
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     * @throws BuildException
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     */
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    private function isArchiveUpToDate()
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    {
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        foreach ($this->filesets as $fs) {
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            $files = $fs->getIterator($this->includeEmpty);
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            if (!$this->areFilesUpToDate($files, $fs->getDir($this->project))) {
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                return false;
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            }
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            for ($i = 0, $fcount = count($files); $i < $fcount; $i++) {
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                if ($this->tarFile->equals(new File($fs->getDir($this->project), $files[$i]))) {
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                    throw new BuildException("A tar file cannot include itself", $this->getLocation());
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                }
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            }
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        }
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        return true;
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    }
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}
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