class.ilGitInformation.php

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<?php
/* Copyright (c) 1998-2015 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Administration/interfaces/interface.ilVersionControlInformation.php';

class ilGitInformation implements ilVersionControlInformation
{
        private static $revision_information = null;

        private static function detect()
        {
                global $lng;

                if(null !== self::$revision_information)
                {
                        return self::$revision_information;
                }

                $info = array();

                // https://gist.github.com/reiaguilera/82d164c7211e299d63ac
                if(!ilUtil::isWindows())
                {
                        $version_mini_hash = ilUtil::execQuoted('git describe --always');
                        $version_number    = ilUtil::execQuoted('git rev-list HEAD | wc -l');
                        $line              = ilUtil::execQuoted('git log -1');

                        if($version_number[0])
                        {
                                $version_number = $version_number[0];
                        }

                        if($version_mini_hash[0])
                        {
                                $version_mini_hash = $version_mini_hash[0];
                        }

                        if($line && array_filter($line))
                        {
                                $line = implode(' | ', array_filter($line));
                        }
                }
                else
                {
                        $version_mini_hash = trim(exec('git describe --always'));
                        $version_number    = exec('git rev-list HEAD | find /v /c ""');
                        $line              = trim(exec('git log -1'));
                }

                if($version_number)
                {
                        $info[] = sprintf($lng->txt('git_revision'), $version_number);
                }

                if($version_mini_hash)
                {
                        $info[] = sprintf($lng->txt('git_hash_short'), $version_mini_hash);
                }

                if($line)
                {
                        $info[] = sprintf($lng->txt('git_last_commit'), $line);
                }

                self::$revision_information = $info;
        }

        public function getInformationAsHtml()
        {
                self::detect();

                return implode("<br />", self::$revision_information);
        }
}