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<?php |
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namespace Consolidation\SiteProcess\Util; |
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use Consolidation\SiteAlias\AliasRecord; |
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use Symfony\Component\Process\Process; |
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class ArgumentProcessor |
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{ |
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public function selectArgs(AliasRecord $siteAlias, $args, $options = [], $optionsPassedAsArgs = []) |
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{ |
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// Split args into three arrays separated by the `--` |
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list($leadingArgs, $dashDash, $remaingingArgs) = $this->findArgSeparator($args); |
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$convertedOptions = $this->convertOptions($options); |
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$convertedOptionsPassedAsArgs = $this->convertOptions($optionsPassedAsArgs); |
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// If the caller provided options that should be passed as args, then we |
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// always need a `--`, whether or not one existed to begin with in $args |
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if (!empty($convertedOptionsPassedAsArgs)) { |
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$dashDash = ['--']; |
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} |
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// Combine our separated args in the correct order. $dashDash will |
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// always be `['--']` if $optionsPassedAsArgs or $remaingingArgs are |
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// not empty, and otherwise will usually be empty. |
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$selectedArgs = array_merge( |
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$leadingArgs, |
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$convertedOptions, |
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$dashDash, |
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$optionsPassedAsArgs, |
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$remaingingArgs |
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); |
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// Do any necessary interpolation on the selected arguments. |
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$processedArgs = $this->interpolate($siteAlias, $selectedArgs); |
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// Wrap the command with 'ssh' or some other transport if this is |
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// a remote command; otherwise, leave it as-is. |
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return $this->wrapWithTransport($siteAlias, $processedArgs); |
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} |
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protected function findArgSeparator($args) |
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{ |
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$pos = array_search('--', $args); |
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if ($pos === false) { |
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return [$args, [], []]; |
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} |
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return [ |
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array_slice($args, 0, $pos), |
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['--'], |
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array_slice($args, $pos + 1), |
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]; |
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} |
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protected function convertOptions($options) |
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{ |
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$result = []; |
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foreach ($options as $option => $value) { |
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if ($value === true || $value == null) { |
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$result[] = "--$option"; |
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} elseif ($value === false) { |
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// Ignore this option. |
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} else { |
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$result[] = "--{$option}={$value}"; |
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} |
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} |
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return $result; |
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} |
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protected function wrapWithTransport(AliasRecord $siteAlias, $args) |
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{ |
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if (!$siteAlias->isRemote()) { |
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return $args; |
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} |
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// @TODO: Methinks this needs to be escaped for the target system. |
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$commandToExecute = implode(' ', $args); |
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// Question: How could we support variable transport mechanisms? |
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return [ |
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'ssh', |
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$siteAlias->get('ssh.options', '-o PasswordAuthentication=no'), |
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$siteAlias->remoteHostWithUser(), |
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$commandToExecute, |
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]; |
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} |
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protected function interpolate(AliasRecord $siteAlias, $args) |
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{ |
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return array_map( |
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function ($arg) use ($siteAlias, $interpolator) { |
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return $interpolator->interpolate($siteAlias, $arg, false); |
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}, |
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$args |
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); |
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} |
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} |
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.