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#!/usr/bin/env php
<?php

/*
 * This file is part of the Predis package.
 *
 * (c) Daniele Alessandri <suppakilla@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

// -------------------------------------------------------------------------- //
// In order to be able to execute this script to create a PEAR package of Predis
// the `pear` binary must be available and executable in your $PATH.
// The parts used to parse author and version strings are taken from Onion (used
// by this library in the past) just to keep on relying on the package.ini file
// to simplify things. We might consider to switch to using the PEAR classes
// directly in the future.
// -------------------------------------------------------------------------- //

function executeWithBackup($file, $callback)
{
    $exception = null;
    $backup = "$file.backup";

copy($file, $backup);

try {
        call_user_func($callback, $file);
    } catch (Exception $exception) {
        // NOOP
    }

unlink($file);
    rename($backup, $file);

if ($exception) {
        throw $exception;
    }
}

function parseAuthor($string)
{
    $author = array();

if (preg_match('/^\s*(.+?)\s*(?:"(\S+)"\s*)?<(\S+)>\s*$/x', $string , $regs)) {
        if (count($regs) == 4) {
            list($orig,$name,$user,$email) = $regs;
            $author['name'] = $name;
            $author['user'] = $user;
            $author['email'] = $email;
        } elseif (count($regs) == 3) {
            list($orig,$name,$email) = $regs;
            $author['name'] = $name;
            $author['email'] = $email;
        }
    } else {
        $author['name'] = $string;
    }

return $author;
}

function parseVersion($string)
{
    $version_pattern = '([0-9.]+)';

if (preg_match("/^\s*$version_pattern\s*\$/x", $string, $regs)) {
        return array('min' => $regs[1] ?: '0.0.0');
    } elseif (preg_match("/^\s*[>=]+\s*$version_pattern\s*\$/x", $string, $regs)) {
        return array('min' => $regs[1] ?: '0.0.0');
    } elseif (preg_match("/^\s*[<=]+\s*$version_pattern\s*\$/x", $string, $regs)) {
        return array('max' => $regs[1]);
    } elseif (preg_match("/^\s*$version_pattern\s*<=>\s*$version_pattern\s*\$/x", $string, $regs)) {
        return array(
            'min' => $regs[1] ?: '0.0.0',
            'max' => $regs[2],
        );
    }
}

function addRolePath($pkg, $path, $role)
{
    if (is_dir($path)) {
        $dirRoot = new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS);
        $dirTree = new RecursiveIteratorIterator($dirRoot, RecursiveIteratorIterator::CHILD_FIRST);

foreach ($dirTree as $fileinfo) {
            if ($fileinfo->isFile()) {
                addPackageFile($pkg, $fileinfo, $role, $path);
            }
        }
    } else {
        foreach (glob($path) as $filename) {
            addPackageFile($pkg, new SplFileInfo($filename), $role);
        }
    }
}

function addPackageFile($pkg, $fileinfo, $role, $baseDir = '')
{
    $fileNode = $pkg->contents->dir->addChild('file');
    $fileNode->addAttribute('name', $filepath = $fileinfo->getPathname());
    $fileNode->addAttribute('role', $role);
    $fileNode->addAttribute('md5sum', md5_file($filepath));

$installNode = $pkg->phprelease->filelist->addChild('install');
    $installNode->addAttribute('name', $filepath);
    $installNode->addAttribute('as', !$baseDir ? basename($filepath) : substr($filepath, strlen($baseDir) + 1));
}

function generatePackageXml($packageINI)
{
    $XML = <<<XML
<?xml version="1.0"?>
<package packagerversion="1.4.10" version="2.0"
    xmlns="http://pear.php.net/dtd/package-2.0"
    xmlns:tasks="http://pear.php.net/dtd/tasks-1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0
              http://pear.php.net/dtd/tasks-1.0.xsd
              http://pear.php.net/dtd/package-2.0
              http://pear.php.net/dtd/package-2.0.xsd" />
XML;

$cfg = parse_ini_file($packageINI, true);
    $pkg = new SimpleXMLElement($XML);

$pkg->name = $cfg['package']['name'];
    $pkg->channel = $cfg['package']['channel'];
    $pkg->summary = $cfg['package']['desc'];
    $pkg->description = $cfg['package']['desc'];

$author = parseAuthor($cfg['package']['author']);
    $pkg->addChild('lead');
    $pkg->lead->name = $author['name'];
    $pkg->lead->user = $author['user'];
    $pkg->lead->email = $author['email'];
    $pkg->lead->active = 'yes';

$datetime = new DateTime('now');
    $pkg->date = $datetime->format('Y-m-d');
    $pkg->time = $datetime->format('H:i:s');

$pkg->addChild('version');
    $pkg->version->release = $cfg['package']['version'];
    $pkg->version->api = $cfg['package']['version'];

$pkg->addChild('stability');
    $pkg->stability->release = $cfg['package']['stability'];
    $pkg->stability->api = $cfg['package']['stability'];

$pkg->license = $cfg['package']['license'];
    $pkg->notes = '-';

$pkg->addChild('contents')->addChild('dir')->addAttribute('name', '/');

$pkg->addChild('dependencies')->addChild('required');
    foreach ($cfg['require'] as $required => $version) {
        $version = parseVersion($version);
        $pkg->dependencies->required->addChild($required);

if (isset($version['min'])) {
            $pkg->dependencies->required->$required->min = $version['min'];
        }
        if (isset($version['max'])) {
            $pkg->dependencies->required->$required->min = $version['max'];
        }
    }

$pkg->addChild('phprelease')->addChild('filelist');

$pathToRole = array(
        'doc' => 'doc', 'docs' => 'doc', 'examples' => 'doc',
        'lib' => 'php', 'src' => 'php',
        'test' => 'test', 'tests' => 'test',
    );

foreach (array_merge($pathToRole, $cfg['roles'] ?: array()) as $path => $role) {
        addRolePath($pkg, $path, $role);
    }

return $pkg;
}

function savePackageXml($xml)
{
    $dom = new DOMDocument("1.0");
    $dom->preserveWhiteSpace = false;
    $dom->formatOutput = true;
    $dom->loadXML($xml->asXML());

file_put_contents('package.xml', $dom->saveXML());
}

function buildPackage()
{
    passthru('pear -q package && rm package.xml');
}

function modifyPhpunitXml($file)
{
    $cfg = new SimpleXMLElement($file, null, true);

$cfg[0]['bootstrap'] = str_replace('tests/', '', $cfg[0]['bootstrap']);
    $cfg->testsuites->testsuite->directory = str_replace('tests/', '', $cfg->testsuites->testsuite->directory);

$cfg->saveXml($file);
}

// -------------------------------------------------------------------------- //

executeWithBackup(__DIR__.'/../phpunit.xml.dist', function ($file) {
    modifyPhpunitXml($file);

$pkg = generatePackageXml('package.ini');
    savePackageXml($pkg);

buildPackage();
});

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