269 lines
9.2 KiB
PHP
269 lines
9.2 KiB
PHP
<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\DependencyResolver;
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use Composer\Package\CompletePackage;
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use Composer\Package\Link;
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use Composer\Package\PackageInterface;
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/**
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* @author Nils Adermann <naderman@naderman.de>
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* @author Ruben Gonzalez <rubenrua@gmail.com>
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*/
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abstract class Rule
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{
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// reason constants
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const RULE_INTERNAL_ALLOW_UPDATE = 1;
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const RULE_JOB_INSTALL = 2;
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const RULE_JOB_REMOVE = 3;
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const RULE_PACKAGE_CONFLICT = 6;
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const RULE_PACKAGE_REQUIRES = 7;
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const RULE_PACKAGE_OBSOLETES = 8;
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const RULE_INSTALLED_PACKAGE_OBSOLETES = 9;
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const RULE_PACKAGE_SAME_NAME = 10;
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const RULE_PACKAGE_IMPLICIT_OBSOLETES = 11;
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const RULE_LEARNED = 12;
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const RULE_PACKAGE_ALIAS = 13;
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// bitfield defs
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const BITFIELD_TYPE = 0;
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const BITFIELD_REASON = 8;
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const BITFIELD_DISABLED = 16;
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protected $bitfield;
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protected $job;
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protected $reasonData;
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/**
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* @param int $reason A RULE_* constant describing the reason for generating this rule
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* @param Link|PackageInterface $reasonData
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* @param array $job The job this rule was created from
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*/
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public function __construct($reason, $reasonData, $job = null)
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{
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$this->reasonData = $reasonData;
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if ($job) {
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$this->job = $job;
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}
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$this->bitfield = (0 << self::BITFIELD_DISABLED) |
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($reason << self::BITFIELD_REASON) |
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(255 << self::BITFIELD_TYPE);
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}
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abstract public function getLiterals();
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abstract public function getHash();
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public function getJob()
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{
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return $this->job;
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}
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abstract public function equals(Rule $rule);
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public function getReason()
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{
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return ($this->bitfield & (255 << self::BITFIELD_REASON)) >> self::BITFIELD_REASON;
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}
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public function getReasonData()
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{
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return $this->reasonData;
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}
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public function getRequiredPackage()
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{
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if ($this->getReason() === self::RULE_JOB_INSTALL) {
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return $this->reasonData;
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}
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if ($this->getReason() === self::RULE_PACKAGE_REQUIRES) {
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return $this->reasonData->getTarget();
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}
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}
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public function setType($type)
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{
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$this->bitfield = ($this->bitfield & ~(255 << self::BITFIELD_TYPE)) | ((255 & $type) << self::BITFIELD_TYPE);
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}
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public function getType()
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{
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return ($this->bitfield & (255 << self::BITFIELD_TYPE)) >> self::BITFIELD_TYPE;
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}
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public function disable()
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{
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$this->bitfield = ($this->bitfield & ~(255 << self::BITFIELD_DISABLED)) | (1 << self::BITFIELD_DISABLED);
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}
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public function enable()
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{
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$this->bitfield &= ~(255 << self::BITFIELD_DISABLED);
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}
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public function isDisabled()
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{
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return (bool) (($this->bitfield & (255 << self::BITFIELD_DISABLED)) >> self::BITFIELD_DISABLED);
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}
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public function isEnabled()
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{
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return !(($this->bitfield & (255 << self::BITFIELD_DISABLED)) >> self::BITFIELD_DISABLED);
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}
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abstract public function isAssertion();
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public function getPrettyString(Pool $pool, array $installedMap = array())
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{
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$literals = $this->getLiterals();
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$ruleText = '';
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foreach ($literals as $i => $literal) {
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if ($i != 0) {
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$ruleText .= '|';
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}
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$ruleText .= $pool->literalToPrettyString($literal, $installedMap);
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}
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switch ($this->getReason()) {
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case self::RULE_INTERNAL_ALLOW_UPDATE:
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return $ruleText;
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case self::RULE_JOB_INSTALL:
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return "Install command rule ($ruleText)";
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case self::RULE_JOB_REMOVE:
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return "Remove command rule ($ruleText)";
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case self::RULE_PACKAGE_CONFLICT:
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$package1 = $pool->literalToPackage($literals[0]);
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$package2 = $pool->literalToPackage($literals[1]);
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return $package1->getPrettyString().' conflicts with '.$this->formatPackagesUnique($pool, array($package2)).'.';
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case self::RULE_PACKAGE_REQUIRES:
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$sourceLiteral = array_shift($literals);
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$sourcePackage = $pool->literalToPackage($sourceLiteral);
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$requires = array();
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foreach ($literals as $literal) {
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$requires[] = $pool->literalToPackage($literal);
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}
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$text = $this->reasonData->getPrettyString($sourcePackage);
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if ($requires) {
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$text .= ' -> satisfiable by ' . $this->formatPackagesUnique($pool, $requires) . '.';
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} else {
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$targetName = $this->reasonData->getTarget();
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if ($targetName === 'php' || $targetName === 'php-64bit' || $targetName === 'hhvm') {
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// handle php/hhvm
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if (defined('HHVM_VERSION')) {
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return $text . ' -> your HHVM version does not satisfy that requirement.';
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}
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$packages = $pool->whatProvides($targetName);
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$package = count($packages) ? current($packages) : phpversion();
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if ($targetName === 'hhvm') {
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if ($package instanceof CompletePackage) {
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return $text . ' -> your HHVM version ('.$package->getPrettyVersion().') does not satisfy that requirement.';
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} else {
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return $text . ' -> you are running this with PHP and not HHVM.';
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}
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}
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if (!($package instanceof CompletePackage)) {
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return $text . ' -> your PHP version ('.phpversion().') does not satisfy that requirement.';
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}
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$extra = $package->getExtra();
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if (!empty($extra['config.platform'])) {
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$text .= ' -> your PHP version ('.phpversion().') overridden by "config.platform.php" version ('.$package->getPrettyVersion().') does not satisfy that requirement.';
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} else {
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$text .= ' -> your PHP version ('.$package->getPrettyVersion().') does not satisfy that requirement.';
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}
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return $text;
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}
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if (0 === strpos($targetName, 'ext-')) {
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// handle php extensions
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$ext = substr($targetName, 4);
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$error = extension_loaded($ext) ? 'has the wrong version ('.(phpversion($ext) ?: '0').') installed' : 'is missing from your system';
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return $text . ' -> the requested PHP extension '.$ext.' '.$error.'.';
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}
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if (0 === strpos($targetName, 'lib-')) {
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// handle linked libs
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$lib = substr($targetName, 4);
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return $text . ' -> the requested linked library '.$lib.' has the wrong version installed or is missing from your system, make sure to have the extension providing it.';
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}
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if ($providers = $pool->whatProvides($targetName, $this->reasonData->getConstraint(), true, true)) {
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return $text . ' -> satisfiable by ' . $this->formatPackagesUnique($pool, $providers) .' but these conflict with your requirements or minimum-stability.';
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}
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return $text . ' -> no matching package found.';
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}
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return $text;
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case self::RULE_PACKAGE_OBSOLETES:
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return $ruleText;
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case self::RULE_INSTALLED_PACKAGE_OBSOLETES:
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return $ruleText;
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case self::RULE_PACKAGE_SAME_NAME:
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return 'Can only install one of: ' . $this->formatPackagesUnique($pool, $literals) . '.';
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case self::RULE_PACKAGE_IMPLICIT_OBSOLETES:
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return $ruleText;
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case self::RULE_LEARNED:
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return 'Conclusion: '.$ruleText;
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case self::RULE_PACKAGE_ALIAS:
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return $ruleText;
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default:
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return '('.$ruleText.')';
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}
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}
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/**
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* @param Pool $pool
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* @param array $packages
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*
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* @return string
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*/
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protected function formatPackagesUnique($pool, array $packages)
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{
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$prepared = array();
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foreach ($packages as $package) {
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if (!is_object($package)) {
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$package = $pool->literalToPackage($package);
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}
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$prepared[$package->getName()]['name'] = $package->getPrettyName();
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$prepared[$package->getName()]['versions'][$package->getVersion()] = $package->getPrettyVersion();
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}
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foreach ($prepared as $name => $package) {
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$prepared[$name] = $package['name'].'['.implode(', ', $package['versions']).']';
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}
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return implode(', ', $prepared);
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}
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}
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