You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

463 lines
16 KiB
PHP

<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Package\Version;
use Composer\Package\BasePackage;
use Composer\Package\PackageInterface;
use Composer\Package\Link;
use Composer\Package\LinkConstraint\EmptyConstraint;
use Composer\Package\LinkConstraint\MultiConstraint;
use Composer\Package\LinkConstraint\VersionConstraint;
/**
* Version parser
*
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class VersionParser
{
private static $modifierRegex = '[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?';
/**
* Returns the stability of a version
*
* @param string $version
* @return string
*/
public static function parseStability($version)
{
$version = preg_replace('{#.+$}i', '', $version);
if ('dev-' === substr($version, 0, 4) || '-dev' === substr($version, -4)) {
return 'dev';
}
preg_match('{'.self::$modifierRegex.'$}i', strtolower($version), $match);
if (!empty($match[3])) {
return 'dev';
}
if (!empty($match[1])) {
if ('beta' === $match[1] || 'b' === $match[1]) {
return 'beta';
}
if ('alpha' === $match[1] || 'a' === $match[1]) {
return 'alpha';
}
if ('rc' === $match[1]) {
return 'RC';
}
}
return 'stable';
}
public static function normalizeStability($stability)
{
$stability = strtolower($stability);
return $stability === 'rc' ? 'RC' : $stability;
}
public static function formatVersion(PackageInterface $package, $truncate = true)
{
if (!$package->isDev() || !in_array($package->getSourceType(), array('hg', 'git'))) {
return $package->getPrettyVersion();
}
// if source reference is a sha1 hash -- truncate
if ($truncate && strlen($package->getSourceReference()) === 40) {
return $package->getPrettyVersion() . ' ' . substr($package->getSourceReference(), 0, 7);
}
return $package->getPrettyVersion() . ' ' . $package->getSourceReference();
}
/**
* Normalizes a version string to be able to perform comparisons on it
*
* @param string $version
* @param string $fullVersion optional complete version string to give more context
* @throws \UnexpectedValueException
* @return string
*/
public function normalize($version, $fullVersion = null)
{
$version = trim($version);
if (null === $fullVersion) {
$fullVersion = $version;
}
// ignore aliases and just assume the alias is required instead of the source
if (preg_match('{^([^,\s]+) +as +([^,\s]+)$}', $version, $match)) {
$version = $match[1];
}
// match master-like branches
if (preg_match('{^(?:dev-)?(?:master|trunk|default)$}i', $version)) {
return '9999999-dev';
}
if ('dev-' === strtolower(substr($version, 0, 4))) {
return 'dev-'.substr($version, 4);
}
// match classical versioning
if (preg_match('{^v?(\d{1,3})(\.\d+)?(\.\d+)?(\.\d+)?'.self::$modifierRegex.'$}i', $version, $matches)) {
$version = $matches[1]
.(!empty($matches[2]) ? $matches[2] : '.0')
.(!empty($matches[3]) ? $matches[3] : '.0')
.(!empty($matches[4]) ? $matches[4] : '.0');
$index = 5;
} elseif (preg_match('{^v?(\d{4}(?:[.:-]?\d{2}){1,6}(?:[.:-]?\d{1,3})?)'.self::$modifierRegex.'$}i', $version, $matches)) { // match date-based versioning
$version = preg_replace('{\D}', '-', $matches[1]);
$index = 2;
} elseif (preg_match('{^v?(\d{4,})(\.\d+)?(\.\d+)?(\.\d+)?'.self::$modifierRegex.'$}i', $version, $matches)) {
$version = $matches[1]
.(!empty($matches[2]) ? $matches[2] : '.0')
.(!empty($matches[3]) ? $matches[3] : '.0')
.(!empty($matches[4]) ? $matches[4] : '.0');
$index = 5;
}
// add version modifiers if a version was matched
if (isset($index)) {
if (!empty($matches[$index])) {
if ('stable' === $matches[$index]) {
return $version;
}
$version .= '-' . $this->expandStability($matches[$index]) . (!empty($matches[$index+1]) ? $matches[$index+1] : '');
}
if (!empty($matches[$index+2])) {
$version .= '-dev';
}
return $version;
}
// match dev branches
if (preg_match('{(.*?)[.-]?dev$}i', $version, $match)) {
try {
return $this->normalizeBranch($match[1]);
} catch (\Exception $e) {
}
}
$extraMessage = '';
if (preg_match('{ +as +'.preg_quote($version).'$}', $fullVersion)) {
$extraMessage = ' in "'.$fullVersion.'", the alias must be an exact version';
} elseif (preg_match('{^'.preg_quote($version).' +as +}', $fullVersion)) {
$extraMessage = ' in "'.$fullVersion.'", the alias source must be an exact version, if it is a branch name you should prefix it with dev-';
}
throw new \UnexpectedValueException('Invalid version string "'.$version.'"'.$extraMessage);
}
/**
* Normalizes a branch name to be able to perform comparisons on it
*
* @param string $name
* @return string
*/
public function normalizeBranch($name)
{
$name = trim($name);
if (in_array($name, array('master', 'trunk', 'default'))) {
return $this->normalize($name);
}
if (preg_match('#^v?(\d+)(\.(?:\d+|[x*]))?(\.(?:\d+|[x*]))?(\.(?:\d+|[x*]))?$#i', $name, $matches)) {
$version = '';
for ($i = 1; $i < 5; $i++) {
$version .= isset($matches[$i]) ? str_replace('*', 'x', $matches[$i]) : '.x';
}
return str_replace('x', '9999999', $version).'-dev';
}
return 'dev-'.$name;
}
/**
* @param string $source source package name
* @param string $sourceVersion source package version (pretty version ideally)
* @param string $description link description (e.g. requires, replaces, ..)
* @param array $links array of package name => constraint mappings
* @return Link[]
*/
public function parseLinks($source, $sourceVersion, $description, $links)
{
$res = array();
foreach ($links as $target => $constraint) {
if ('self.version' === $constraint) {
$parsedConstraint = $this->parseConstraints($sourceVersion);
} else {
$parsedConstraint = $this->parseConstraints($constraint);
}
$res[strtolower($target)] = new Link($source, $target, $parsedConstraint, $description, $constraint);
}
return $res;
}
/**
* Parses as constraint string into LinkConstraint objects
*
* @param string $constraints
* @return \Composer\Package\LinkConstraint\LinkConstraintInterface
*/
public function parseConstraints($constraints)
{
$prettyConstraint = $constraints;
if (preg_match('{^([^,\s]*?)@('.implode('|', array_keys(BasePackage::$stabilities)).')$}i', $constraints, $match)) {
$constraints = empty($match[1]) ? '*' : $match[1];
}
if (preg_match('{^(dev-[^,\s@]+?|[^,\s@]+?\.x-dev)#.+$}i', $constraints, $match)) {
$constraints = $match[1];
}
$orConstraints = preg_split('{\s*\|\s*}', trim($constraints));
$orGroups = array();
foreach ($orConstraints as $constraints) {
$andConstraints = preg_split('{\s*,\s*}', $constraints);
if (count($andConstraints) > 1) {
$constraintObjects = array();
foreach ($andConstraints as $constraint) {
$constraintObjects = array_merge($constraintObjects, $this->parseConstraint($constraint));
}
} else {
$constraintObjects = $this->parseConstraint($andConstraints[0]);
}
if (1 === count($constraintObjects)) {
$constraint = $constraintObjects[0];
} else {
$constraint = new MultiConstraint($constraintObjects);
}
$orGroups[] = $constraint;
}
if (1 === count($orGroups)) {
$constraint = $orGroups[0];
} else {
$constraint = new MultiConstraint($orGroups, false);
}
$constraint->setPrettyString($prettyConstraint);
return $constraint;
}
private function parseConstraint($constraint)
{
if (preg_match('{^([^,\s]+?)@('.implode('|', array_keys(BasePackage::$stabilities)).')$}i', $constraint, $match)) {
$constraint = $match[1];
if ($match[2] !== 'stable') {
$stabilityModifier = $match[2];
}
}
if (preg_match('{^[x*](\.[x*])*$}i', $constraint)) {
return array(new EmptyConstraint);
}
// match tilde constraints
// like wildcard constraints, unsuffixed tilde constraints say that they must be greater than the previous
// version, to ensure that unstable instances of the current version are allowed.
// however, if a stability suffix is added to the constraint, then a >= match on the current version is
// used instead
if (preg_match('{^~>?(\d+)(?:\.(\d+))?(?:\.(\d+))?(?:\.(\d+))?'.self::$modifierRegex.'?$}i', $constraint, $matches)) {
if (substr($constraint, 0, 2) === '~>') {
throw new \UnexpectedValueException(
'Could not parse version constraint '.$constraint.': '.
'Invalid operator "~>", you probably meant to use the "~" operator'
);
}
// Work out which position in the version we are operating at
if (isset($matches[4]) && '' !== $matches[4]) {
$position = 4;
} elseif (isset($matches[3]) && '' !== $matches[3]) {
$position = 3;
} elseif (isset($matches[2]) && '' !== $matches[2]) {
$position = 2;
} else {
$position = 1;
}
// Calculate the stability suffix
$stabilitySuffix = '';
if (!empty($matches[5])) {
$stabilitySuffix .= '-' . $this->expandStability($matches[5]) . (!empty($matches[6]) ? $matches[6] : '');
}
if (!empty($matches[7])) {
$stabilitySuffix .= '-dev';
}
if (!$stabilitySuffix) {
$stabilitySuffix = "-dev";
}
$lowVersion = $this->manipulateVersionString($matches, $position, 0) . $stabilitySuffix;
$lowerBound = new VersionConstraint('>=', $lowVersion);
// For upper bound, we increment the position of one more significance,
// but highPosition = 0 would be illegal
$highPosition = max(1, $position - 1);
$highVersion = $this->manipulateVersionString($matches, $highPosition, 1) . '-dev';
$upperBound = new VersionConstraint('<', $highVersion);
return array(
$lowerBound,
$upperBound
);
}
// match wildcard constraints
if (preg_match('{^(\d+)(?:\.(\d+))?(?:\.(\d+))?\.[x*]$}', $constraint, $matches)) {
if (isset($matches[3]) && '' !== $matches[3]) {
$position = 3;
} elseif (isset($matches[2]) && '' !== $matches[2]) {
$position = 2;
} else {
$position = 1;
}
$lowVersion = $this->manipulateVersionString($matches, $position) . "-dev";
$highVersion = $this->manipulateVersionString($matches, $position, 1) . "-dev";
if ($lowVersion === "0.0.0.0-dev") {
return array(new VersionConstraint('<', $highVersion));
}
return array(
new VersionConstraint('>=', $lowVersion),
new VersionConstraint('<', $highVersion),
);
}
// match operators constraints
if (preg_match('{^(<>|!=|>=?|<=?|==?)?\s*(.*)}', $constraint, $matches)) {
try {
$version = $this->normalize($matches[2]);
if (!empty($stabilityModifier) && $this->parseStability($version) === 'stable') {
$version .= '-' . $stabilityModifier;
} elseif ('<' === $matches[1]) {
if (!preg_match('/-stable$/', strtolower($matches[2]))) {
$version .= '-dev';
}
}
return array(new VersionConstraint($matches[1] ?: '=', $version));
} catch (\Exception $e) {
}
}
$message = 'Could not parse version constraint '.$constraint;
if (isset($e)) {
$message .= ': '. $e->getMessage();
}
throw new \UnexpectedValueException($message);
}
/**
* Increment, decrement, or simply pad a version number.
*
* Support function for {@link parseConstraint()}
*
* @param array $matches Array with version parts in array indexes 1,2,3,4
* @param int $position 1,2,3,4 - which segment of the version to decrement
* @param int $increment
* @param string $pad The string to pad version parts after $position
* @return string The new version
*/
private function manipulateVersionString($matches, $position, $increment = 0, $pad = '0')
{
for ($i = 4; $i > 0; $i--) {
if ($i > $position) {
$matches[$i] = $pad;
} elseif ($i == $position && $increment) {
$matches[$i] += $increment;
// If $matches[$i] was 0, carry the decrement
if ($matches[$i] < 0) {
$matches[$i] = $pad;
$position--;
// Return null on a carry overflow
if ($i == 1) {
return;
}
}
}
}
return $matches[1] . '.' . $matches[2] . '.' . $matches[3] . '.' . $matches[4];
}
private function expandStability($stability)
{
$stability = strtolower($stability);
switch ($stability) {
case 'a':
return 'alpha';
case 'b':
return 'beta';
case 'p':
case 'pl':
return 'patch';
case 'rc':
return 'RC';
default:
return $stability;
}
}
/**
* Parses a name/version pairs and returns an array of pairs + the
*
* @param array $pairs a set of package/version pairs separated by ":", "=" or " "
* @return array[] array of arrays containing a name and (if provided) a version
*/
public function parseNameVersionPairs(array $pairs)
{
$pairs = array_values($pairs);
$result = array();
for ($i = 0, $count = count($pairs); $i < $count; $i++) {
$pair = preg_replace('{^([^=: ]+)[=: ](.*)$}', '$1 $2', trim($pairs[$i]));
if (false === strpos($pair, ' ') && isset($pairs[$i+1]) && false === strpos($pairs[$i+1], '/')) {
$pair .= ' '.$pairs[$i+1];
$i++;
}
if (strpos($pair, ' ')) {
list($name, $version) = explode(" ", $pair, 2);
$result[] = array('name' => $name, 'version' => $version);
} else {
$result[] = array('name' => $pair);
}
}
return $result;
}
}