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<?php |
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/* |
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* This file is part of the webmozart/console package. |
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* |
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* (c) Bernhard Schussek <[email protected]> |
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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 Webmozart\Console\UI\Help; |
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use Webmozart\Console\Api\Args\Format\ArgsFormat; |
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use Webmozart\Console\Api\Args\Format\Argument; |
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use Webmozart\Console\Api\Args\Format\Option; |
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use Webmozart\Console\Api\IO\IO; |
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use Webmozart\Console\UI\Component; |
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use Webmozart\Console\UI\Component\EmptyLine; |
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use Webmozart\Console\UI\Component\LabeledParagraph; |
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use Webmozart\Console\UI\Component\Paragraph; |
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use Webmozart\Console\UI\Layout\BlockLayout; |
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/** |
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* Base class for rendering help pages. |
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* |
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* @since 1.0 |
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* |
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* @author Bernhard Schussek <[email protected]> |
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*/ |
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abstract class AbstractHelp implements Component |
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{ |
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/** |
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* Renders the usage. |
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* |
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* @param IO $io The I/O. |
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* @param int $indentation The number of spaces to indent. |
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*/ |
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public function render(IO $io, $indentation = 0) |
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{ |
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$layout = new BlockLayout(); |
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$this->renderHelp($layout); |
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$layout->render($io, $indentation); |
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} |
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/** |
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* Renders the usage. |
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* |
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* Overwrite this class in your sub-classes to implement the actual |
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* rendering. |
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* |
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* @param BlockLayout $layout The layout. |
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*/ |
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abstract protected function renderHelp(BlockLayout $layout); |
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/** |
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* Renders a list of arguments. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param Argument[] $arguments The arguments to render. |
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*/ |
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View Code Duplication |
protected function renderArguments(BlockLayout $layout, array $arguments) |
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{ |
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$layout->add(new Paragraph('<b>ARGUMENTS</b>')); |
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$layout->beginBlock(); |
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foreach ($arguments as $argument) { |
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$this->renderArgument($layout, $argument); |
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} |
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$layout->endBlock(); |
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$layout->add(new EmptyLine()); |
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} |
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/** |
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* Renders an argument. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param Argument $argument The argument to render. |
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*/ |
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protected function renderArgument(BlockLayout $layout, Argument $argument) |
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{ |
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$description = $argument->getDescription(); |
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$name = '<c1><'.$argument->getName().'></c1>'; |
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$defaultValue = $argument->getDefaultValue(); |
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if (null !== $defaultValue && (!is_array($defaultValue) || count($defaultValue))) { |
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$description .= sprintf(' <b>(default: %s)</b>', $this->formatValue($defaultValue)); |
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} |
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$layout->add(new LabeledParagraph($name, $description)); |
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} |
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/** |
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* Renders a list of options. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param Option[] $options The options to render. |
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*/ |
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protected function renderOptions(BlockLayout $layout, array $options) |
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{ |
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$layout->add(new Paragraph('<b>OPTIONS</b>')); |
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$layout->beginBlock(); |
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foreach ($options as $option) { |
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$this->renderOption($layout, $option); |
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} |
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$layout->endBlock(); |
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$layout->add(new EmptyLine()); |
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} |
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/** |
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* Renders a list of global options. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param Option[] $options The global options to render. |
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*/ |
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protected function renderGlobalOptions(BlockLayout $layout, array $options) |
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{ |
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$layout->add(new Paragraph('<b>GLOBAL OPTIONS</b>')); |
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$layout->beginBlock(); |
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foreach ($options as $option) { |
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$this->renderOption($layout, $option); |
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} |
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$layout->endBlock(); |
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$layout->add(new EmptyLine()); |
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} |
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/** |
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* Renders an option. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param Option $option The option to render. |
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*/ |
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protected function renderOption(BlockLayout $layout, Option $option) |
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{ |
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$description = $option->getDescription(); |
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$defaultValue = $option->getDefaultValue(); |
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if ($option->isLongNamePreferred()) { |
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$preferredName = '--'.$option->getLongName(); |
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$alternativeName = $option->getShortName() ? '-'.$option->getShortName() : null; |
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} else { |
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$preferredName = '-'.$option->getShortName(); |
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$alternativeName = '--'.$option->getLongName(); |
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} |
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$name = '<c1>'.$preferredName.'</c1>'; |
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if ($alternativeName) { |
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$name .= sprintf(' (%s)', $alternativeName); |
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} |
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if ($option->acceptsValue() && null !== $defaultValue && (!is_array($defaultValue) || count($defaultValue))) { |
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$description .= sprintf(' <b>(default: %s)</b>', $this->formatValue($defaultValue)); |
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} |
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if ($option->isMultiValued()) { |
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$description .= ' <b>(multiple values allowed)</b>'; |
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} |
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$layout->add(new LabeledParagraph($name, $description)); |
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} |
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/** |
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* Renders the synopsis of a console command. |
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* |
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* @param BlockLayout $layout The layout. |
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* @param ArgsFormat $argsFormat The console arguments to render. |
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* @param string $appName The name of the application binary. |
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* @param string $prefix The prefix to insert. |
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* @param bool $lastOptional Set to `true` if the last command of the |
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* console arguments is optional. This |
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* command will be enclosed in brackets in |
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* the output. |
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*/ |
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protected function renderSynopsis(BlockLayout $layout, ArgsFormat $argsFormat, $appName, $prefix = '', $lastOptional = false) |
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{ |
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$nameParts = array(); |
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$argumentParts = array(); |
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$nameParts[] = '<u>'.($appName ?: 'console').'</u>'; |
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foreach ($argsFormat->getCommandNames() as $commandName) { |
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$nameParts[] = '<u>'.$commandName->toString().'</u>'; |
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} |
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foreach ($argsFormat->getCommandOptions() as $commandOption) { |
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$nameParts[] = $commandOption->isLongNamePreferred() |
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? '--'.$commandOption->getLongName() |
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: '-'.$commandOption->getShortName(); |
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} |
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if ($lastOptional) { |
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$lastIndex = count($nameParts) - 1; |
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$nameParts[$lastIndex] = '['.$nameParts[$lastIndex].']'; |
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} |
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foreach ($argsFormat->getOptions(false) as $option) { |
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// \xC2\xA0 is a non-breaking space |
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if ($option->isValueRequired()) { |
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$format = "%s\xC2\xA0<%s>"; |
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} elseif ($option->isValueOptional()) { |
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$format = "%s\xC2\xA0[<%s>]"; |
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} else { |
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$format = '%s'; |
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} |
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$optionName = $option->isLongNamePreferred() |
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? '--'.$option->getLongName() |
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: '-'.$option->getShortName(); |
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$argumentParts[] = sprintf('['.$format.']', $optionName, $option->getValueName()); |
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} |
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foreach ($argsFormat->getArguments() as $argument) { |
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$argName = $argument->getName(); |
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$argumentParts[] = sprintf( |
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$argument->isRequired() ? '<%s>' : '[<%s>]', |
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$argName.($argument->isMultiValued() ? '1' : '') |
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); |
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if ($argument->isMultiValued()) { |
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$argumentParts[] = sprintf('... [<%sN>]', $argName); |
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} |
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} |
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$argsOpts = implode(' ', $argumentParts); |
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$name = implode(' ', $nameParts); |
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$layout->add(new LabeledParagraph($prefix.$name, $argsOpts, 1, false)); |
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} |
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/** |
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* Formats the default value of an argument or an option. |
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* |
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* @param mixed $value The default value to format. |
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* |
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* @return string The formatted value. |
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*/ |
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protected function formatValue($value) |
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{ |
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if (PHP_VERSION_ID < 50400) { |
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return str_replace('\/', '/', json_encode($value)); |
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} |
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return json_encode($value, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE); |
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} |
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} |
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For interface and abstract methods, it is impossible to infer the return type from the immediate code. In these cases, it is generally advisible to explicitly annotate these methods with a
@return
doc comment to communicate to implementors of these methods what they are expected to return.