GitElephant\Objects\Log

Complexity

Total Complexity

22

Size/Duplication

Total Lines	260
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Test Coverage

Coverage

58.18%

Importance

Changes	3
Bugs	0	Features	0

20 Methods

Rating	Name	Duplication	Size	Complexity
A	toArray()	0	4	1
A	first()	0	4	1
A	last()	0	4	1
A	index()	0	4	1
A	offsetExists()	0	4	1
A	offsetGet()	0	4	2
A	offsetSet()	0	4	1
A	offsetUnset()	0	4	1
A	count()	0	4	1
A	current()	0	4	1
A	next()	0	4	1
A	key()	0	4	1
A	valid()	0	4	1
A	rewind()	0	4	1
A	setRepository()	0	4	1
A	getRepository()	0	4	1
A	createFromOutputLines()	0	7	1
A	parseOutputLines()	0	8	2
A	__construct()	0	11	1
A	createFromCommand()	0	6	1

<?php
/**
 * GitElephant - An abstraction layer for git written in PHP
 * Copyright (C) 2013  Matteo Giachino
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see [http://www.gnu.org/licenses/].
 */

namespace GitElephant\Objects;

use \GitElephant\Repository;
use \GitElephant\Command\LogCommand;
use \GitElephant\Utilities;

/**
 * Git log abstraction object
 *
 * @author Matteo Giachino <matteog@gmail.com>
 * @author Dhaval Patel <tech.dhaval@gmail.com>
 */
class Log implements \ArrayAccess, \Countable, \Iterator
{
    /**
     * @var \GitElephant\Repository
     */
    private $repository;

    /**
     * the commits related to this log
     *
     * @var array
     */
    private $commits  = array();

    /**
     * the cursor position
     *
     * @var int
     */
    private $position = 0;

    /**
     * static method to generate standalone log
     *
     * @param \GitElephant\Repository $repository  repo
     * @param array                   $outputLines output lines from command.log
     *
     * @return \GitElephant\Objects\Log
     */
    public static function createFromOutputLines(Repository $repository, $outputLines)
    {
        $log = new self($repository);
        $log->parseOutputLines($outputLines);

        return $log;
    }

    /**
     * Class constructor
     *
     * @param \GitElephant\Repository $repository  repo
     * @param string                  $ref         treeish reference
     * @param null                    $path        path
     * @param int                     $limit       limit
     * @param null                    $offset      offset
     * @param boolean                 $firstParent first parent
     *
     * @throws \RuntimeException
     * @throws \Symfony\Component\Process\Exception\RuntimeException
     */
    public function __construct(
        Repository $repository,
        $ref = 'HEAD',
        $path = null,
        $limit = 15,
        $offset = null,
        $firstParent = false
    ) {
        $this->repository = $repository;
        $this->createFromCommand($ref, $path, $limit, $offset, $firstParent);
    }

    /**
     * get the commit properties from command
     *
     * @param string  $ref         treeish reference
     * @param string  $path        path
     * @param int     $limit       limit
     * @param string  $offset      offset
     * @param boolean $firstParent first parent
     *
     * @throws \RuntimeException
     * @throws \Symfony\Component\Process\Exception\LogicException
     * @throws \Symfony\Component\Process\Exception\InvalidArgumentException
     * @throws \Symfony\Component\Process\Exception\RuntimeException
     * @see ShowCommand::commitInfo
     */
    private function createFromCommand($ref, $path, $limit, $offset, $firstParent)
    {
        $command = LogCommand::getInstance($this->getRepository())->showLog($ref, $path, $limit, $offset, $firstParent);
        $outputLines = $this->getRepository()->getCaller()->execute($command)->getOutputLines(true);
        $this->parseOutputLines($outputLines);
    }

    private function parseOutputLines($outputLines)
    {
        $this->commits = array();
        $commits = Utilities::pregSplitFlatArray($outputLines, '/^commit (\w+)$/');
        foreach ($commits as $commitOutputLines) {
            $this->commits[] = Commit::createFromOutputLines($this->getRepository(), $commitOutputLines);
        }
    }

    /**
     * Get array representation
     *
     * @return array
     */
    public function toArray()
    {
        return $this->commits;
    }

    /**
     * Get the first commit
     *
     * @return Commit|null
     */
    public function first()
    {
        return $this->offsetGet(0);
    }

    /**
     * Get the last commit
     *
     * @return Commit|null
     */
    public function last()
    {
        return $this->offsetGet($this->count() - 1);
    }

    /**
     * Get commit at index
     *
     * @param int $index the commit index
     *
     * @return Commit|null
     */
    public function index($index)
    {
        return $this->offsetGet($index);
    }

    /**
     * ArrayAccess interface
     *
     * @param int $offset offset
     *
     * @return bool
     */
    public function offsetExists($offset)
    {
        return isset($this->commits[$offset]);
    }

    /**
     * ArrayAccess interface
     *
     * @param int $offset offset
     *
     * @return Commit|null
     */
    public function offsetGet($offset)
    {
        return isset($this->commits[$offset]) ? $this->commits[$offset] : null;
    }

    /**
     * ArrayAccess interface
     *
     * @param int   $offset offset
     * @param mixed $value  value
     *
     * @throws \RuntimeException
     */
    public function offsetSet($offset, $value)
    {
        throw new \RuntimeException('Can\'t set elements on logs');
    }

    /**
     * ArrayAccess interface
     *
     * @param int $offset offset
     *
     * @throws \RuntimeException
     */
    public function offsetUnset($offset)
    {
        throw new \RuntimeException('Can\'t unset elements on logs');
    }

    /**
     * Countable interface
     *
     * @return int|void
     */
    public function count()
    {
        return count($this->commits);
    }

    /**
     * Iterator interface
     *
     * @return Commit|null
     */
    public function current()
    {
        return $this->offsetGet($this->position);
    }

    /**
     * Iterator interface
     */
    public function next()
    {
        ++$this->position;
    }

    /**
     * Iterator interface
     *
     * @return int
     */
    public function key()
    {
        return $this->position;
    }

    /**
     * Iterator interface
     *
     * @return bool
     */
    public function valid()
    {
        return $this->offsetExists($this->position);
    }

    /**
     * Iterator interface
     */
    public function rewind()
    {
        $this->position = 0;
    }

    /**
     * Repository setter
     *
     * @param \GitElephant\Repository $repository the repository variable
     */
    public function setRepository($repository)
    {
        $this->repository = $repository;
    }

    /**
     * Repository getter
     *
     * @return \GitElephant\Repository
     */
    public function getRepository()
    {
        return $this->repository;
    }
}