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<?php
namespace Webmozart\Console\Resolver;
use Webmozart\Console\Api\Application\Application;
use Webmozart\Console\Api\Args\RawArgs;
use Webmozart\Console\Api\Command\Command;
use Webmozart\Console\Api\Command\CommandCollection;
use Webmozart\Console\Api\Config\OptionCommandConfig;
use Webmozart\Console\Api\Resolver\CannotResolveCommandException;
use Webmozart\Console\Api\Resolver\CommandResolver;
use Webmozart\Console\Api\Resolver\ResolvedCommand;
class DefaultResolver implements CommandResolver
{
public function resolveCommand(RawArgs $args, Application $application)
{
$tokens = $args->getTokens();
$namedCommands = $application->getNamedCommands();
$argumentsToTest = $this->getArgumentsToTest($tokens);
$optionsToTest = $this->getOptionsToTest($tokens);
if ($result = $this->processArguments($args, $namedCommands, $argumentsToTest, $optionsToTest)) {
return $this->createResolvedCommand($result);
}
if ($argumentsToTest) {
throw CannotResolveCommandException::nameNotFound(reset($argumentsToTest), $namedCommands);
}
if ($result = $this->processDefaultCommands($args, $application->getDefaultCommands())) {
return $this->createResolvedCommand($result);
}
throw CannotResolveCommandException::noDefaultCommand();
}
private function processArguments(RawArgs $args, CommandCollection $namedCommands, array $argumentsToTest, array $optionsToTest)
{
$currentCommand = null;
foreach ($argumentsToTest as $name) {
if (!$namedCommands->contains($name)) {
break;
}
$nextCommand = $namedCommands->get($name);
if ($nextCommand->getConfig() instanceof OptionCommandConfig) {
break;
}
$currentCommand = $nextCommand;
$namedCommands = $currentCommand->getNamedSubCommands();
}
if (!$currentCommand) {
return null;
}
return $this->processOptions($args, $currentCommand, $optionsToTest);
}
private function processOptions(RawArgs $args, Command $currentCommand, array $optionsToTest)
{
foreach ($optionsToTest as $option) {
$commands = $currentCommand->getNamedSubCommands();
if (!$commands->contains($option)) {
continue;
}
$nextCommand = $commands->get($option);
if (!$nextCommand->getConfig() instanceof OptionCommandConfig) {
break;
}
$currentCommand = $nextCommand;
}
return $this->processDefaultSubCommands($args, $currentCommand);
}
private function processDefaultSubCommands(RawArgs $args, Command $currentCommand)
{
if ($result = $this->processDefaultCommands($args, $currentCommand->getDefaultSubCommands())) {
return $result;
}
return new ResolveResult($currentCommand, $args);
}
private function processDefaultCommands(RawArgs $args, CommandCollection $defaultCommands)
{
$firstResult = null;
foreach ($defaultCommands as $defaultCommand) {
$resolvedCommand = new ResolveResult($defaultCommand, $args);
if ($resolvedCommand->isParsable()) {
return $resolvedCommand;
}
if (!$firstResult) {
$firstResult = $resolvedCommand;
}
}
return $firstResult;
}
private function getArgumentsToTest(array &$tokens)
{
$argumentsToTest = array();
for (; null !== key($tokens); next($tokens)) {
$token = current($tokens);
if ('--' === $token) {
break;
}
if (isset($token[0]) && '-' === $token[0]) {
break;
}
$argumentsToTest[] = $token;
}
return $argumentsToTest;
}
private function getOptionsToTest(array &$tokens)
{
$optionsToTest = array();
for (; null !== key($tokens); next($tokens)) {
$token = current($tokens);
if ('--' === $token) {
break;
}
if (isset($token[0]) && '-' === $token[0]) {
if ('--' === substr($token, 0, 2) && strlen($token) > 2) {
$optionsToTest[] = substr($token, 2);
} elseif (2 === strlen($token)) {
$optionsToTest[] = substr($token, 1);
}
continue;
}
}
return $optionsToTest;
}
private function createResolvedCommand(ResolveResult $result)
{
if (!$result->isParsable()) {
throw $result->getParseError();
}
return new ResolvedCommand($result->getCommand(), $result->getParsedArgs());
}
}