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YarnLock.php
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YarnLock.php
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<?php
namespace Mindscreen\YarnLock;
class YarnLock
{
/**
* @var Package[]
*/
protected $packages;
/**
* @var boolean
*/
protected $depthCalculated = false;
/**
* Creates an instance from the contents of a yarn.lock file
* @param string $input
* @return YarnLock
* @throws ParserException
* @throws \InvalidArgumentException
*/
public static function fromString($input)
{
if (!is_string($input)) {
throw new \InvalidArgumentException('YarnLock::fromString expects input to be a string', 1519201965);
}
$parser = new Parser();
$yarnLockData = $parser->parse($input);
$yarnLock = new static();
$yarnLock->setPackages(self::evaluatePackages($yarnLockData));
return $yarnLock;
}
/**
* @param \stdClass $data
* @return array
*/
protected static function evaluatePackages($data)
{
$packageVersionMap = [];
$allPackages = [];
foreach (get_object_vars($data) as $packageVersions => $dependencyInformation) {
$packageVersionStrings = Parser::parseVersionStrings($packageVersions);
$packageName = Parser::splitVersionString($packageVersionStrings[0])[0];
$packageVersion = $dependencyInformation->version;
if (!array_key_exists($packageName, $packageVersionMap)) {
$packageVersionMap[$packageName] = [];
}
$package = new Package();
$package->setName($packageName);
$package->setVersion($packageVersion);
$package->setResolved($dependencyInformation->resolved);
foreach ($packageVersionStrings as &$packageVersionString) {
$packageVersionString = Parser::splitVersionString($packageVersionString)[1];
$package->addVersion($packageVersionString);
$packageVersionMap[$packageName][$packageVersionString] = [
'package' => $package,
'data' => $dependencyInformation,
];
}
$allPackages[] = $package;
}
foreach ($packageVersionMap as $packageName => $versions) {
foreach ($versions as $version => $packageInformation) {
/** @var Package $package */
$package = $packageInformation['package'];
if (isset($package->__handled)) {
continue;
}
$package->__handled = true;
$data = $packageInformation['data'];
foreach ([
Package::DEPENDENCY_TYPE_DEFAULT,
Package::DEPENDENCY_TYPE_DEV,
Package::DEPENDENCY_TYPE_OPTIONAL,
Package::DEPENDENCY_TYPE_PEER,
] as $dependencyType) {
$field = Package::getDependencyField($dependencyType);
if (isset($data->$field)) {
foreach ($data->$field as $dependencyName => $dependencyVersion) {
$dependencyPackage = $packageVersionMap[$dependencyName][$dependencyVersion]['package'];
$package->addDependency($dependencyPackage, $dependencyType);
}
}
}
}
}
return $allPackages;
}
/**
* Get all packages resolved in this lock file
* @return Package[]
*/
public function getPackages()
{
return $this->packages;
}
/**
* @param Package[] $packages
*/
public function setPackages($packages)
{
$this->packages = $packages;
}
/**
* A package might be required in multiple versions.
*
* @param string $packageName
* @return Package[]
*/
public function getPackagesByName($packageName)
{
return array_values(array_filter($this->packages, function(Package $package) use ($packageName) {
return $package->getName() === $packageName;
}));
}
/**
* Get all dependencies with a certain depth (`getPackagesByDepth(1)`), up to a certain depth
* (`getPackagesByDepth(0, 2)`) or starting from a certain depth (`getPackagesByDepth(1, null)`).
* Note that $end is exclusive.
*
* @param int $start
* @param int $end
* @return Package[]
*/
public function getPackagesByDepth($start, $end = 0)
{
if ($end === 0 || ($end !== null && $end < $start)) {
$end = $start + 1;
}
return array_values(array_filter($this->packages, function(Package $package) use ($start, $end) {
$depth = $package->getDepth();
if ($depth === null) {
return $end === null;
}
$to = $end === null ? true : $depth < $end;
return $depth >= $start && $to;
}));
}
/**
* Get the maximal dependency-tree depth.
*
* @return int
*/
public function getDepth()
{
$this->calculateDepth();
return array_reduce($this->packages, function($d, Package $package) {
return max($d, $package->getDepth());
}, 0) + 1;
}
/**
* Gets a package matching the name and - if given - version.
* Returns null, if no package was found.
* If no version is given and a package is resolved with multiple versions,
* the first one will be returned. Consider using `getPackagesByName` and
* filter for the version that fits your needs closest.
*
* @param string $name
* @param string $version
* @return Package|null
*/
public function getPackage($name, $version = null)
{
$candidates = $this->getPackagesByName($name);
if (count($candidates) < 1) {
return null;
}
if ($version === null) {
return $candidates[0];
}
foreach ($candidates as $package) {
if ($package->getVersion() === $version) {
return $package;
}
if (in_array($version, $package->getSatisfiedVersions())) {
return $package;
}
}
return null;
}
/**
* Checks whether a specific package is resolved in this lock file.
*
* @param string $name
* @param string $version
* @return bool
*/
public function hasPackage($name, $version = null)
{
return $this->getPackage($name, $version) !== null;
}
/**
* Calculate the depth of the packages in the dependency tree.
* To avoid your root dependencies getting listed deeper in the tree, you should
* specify them as $root.
*
* @param Package[] $root
*/
public function calculateDepth(array $root = null)
{
if ($this->depthCalculated) {
return;
}
if ($root === null) {
$root = array_values(array_filter($this->packages, function(Package $p) {
return count($p->getResolves()) === 0;
}));
}
/** @var Package $rootNode */
foreach ($root as $rootNode) {
$this->calculateChildDepth($rootNode, 0);
}
$this->depthCalculated = true;
}
/**
* @param Package $node
* @param int $depth
*/
protected function calculateChildDepth(Package $node, $depth) {
if ($node->getDepth() !== null && $node->getDepth() <= $depth) {
return;
}
$node->setDepth($depth);
foreach ($node->getAllDependencies() as $dependency) {
$this->calculateChildDepth($dependency, $depth + 1);
}
}
}