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<?php |
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/* |
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* This file is part of the PHP-CLI package. |
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* |
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* (c) Jitendra Adhikari <[email protected]> |
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* <https://github.com/adhocore> |
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* |
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* Licensed under MIT license. |
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*/ |
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namespace Ahc\Cli\Helper; |
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use Ahc\Cli\Exception; |
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use Ahc\Cli\Input\Argument; |
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use Ahc\Cli\Input\Command; |
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use Ahc\Cli\Input\Option; |
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use Ahc\Cli\Input\Parameter; |
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use Ahc\Cli\Output\Writer; |
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/** |
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* This helper helps you by showing you help information :). |
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* |
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* @author Jitendra Adhikari <[email protected]> |
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* @license MIT |
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* |
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* @link https://github.com/adhocore/cli |
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*/ |
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class OutputHelper |
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{ |
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/** @var Writer */ |
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protected $writer; |
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/** @var int Max width of command name */ |
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protected $maxCmdName; |
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public function __construct(Writer $writer = null) |
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{ |
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$this->writer = $writer ?? new Writer; |
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} |
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/** |
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* Print stack trace and error msg of an exception. |
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* |
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* @param \Throwable $e |
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* |
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* @return void |
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*/ |
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public function printTrace(\Throwable $e) |
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{ |
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$eClass = \get_class($e); |
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$this->writer->colors( |
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"{$eClass} <red>{$e->getMessage()}</end><eol/>" . |
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"(thrown in <yellow>{$e->getFile()}</end><white>:{$e->getLine()})</end>" |
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); |
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// Internal exception traces are not printed. |
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if ($e instanceof Exception) { |
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return; |
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} |
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$traceStr = '<eol/><eol/><bold>Stack Trace:</end><eol/><eol/>'; |
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foreach ($e->getTrace() as $i => $trace) { |
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$trace += ['class' => '', 'type' => '', 'function' => '', 'file' => '', 'line' => '', 'args' => []]; |
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$symbol = $trace['class'] . $trace['type'] . $trace['function']; |
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$args = $this->stringifyArgs($trace['args']); |
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$traceStr .= " <comment>$i)</end> <red>$symbol</end><comment>($args)</end>"; |
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if ('' !== $trace['file']) { |
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$file = \realpath($trace['file']); |
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$traceStr .= "<eol/> <yellow>at $file</end><white>:{$trace['line']}</end><eol/>"; |
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} |
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} |
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$this->writer->colors($traceStr); |
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} |
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protected function stringifyArgs(array $args) |
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{ |
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$holder = []; |
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foreach ($args as $arg) { |
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$holder[] = $this->stringifyArg($arg); |
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} |
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return \implode(', ', $holder); |
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} |
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protected function stringifyArg($arg) |
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{ |
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if (\is_scalar($arg)) { |
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return \var_export($arg, true); |
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} |
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if (\is_object($arg)) { |
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return \method_exists($arg, '__toString') ? (string) $arg : \get_class($arg); |
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} |
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if (\is_array($arg)) { |
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return '[' . $this->stringifyArgs($arg) . ']'; |
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} |
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return \gettype($arg); |
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} |
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/** |
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* @param Argument[] $arguments |
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* @param string $header |
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* @param string $footer |
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* |
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* @return self |
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*/ |
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public function showArgumentsHelp(array $arguments, string $header = '', string $footer = ''): self |
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{ |
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$this->showHelp('Arguments', $arguments, $header, $footer); |
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return $this; |
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} |
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/** |
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* @param Option[] $options |
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* @param string $header |
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* @param string $footer |
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* |
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* @return self |
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*/ |
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public function showOptionsHelp(array $options, string $header = '', string $footer = ''): self |
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{ |
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$this->showHelp('Options', $options, $header, $footer); |
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return $this; |
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} |
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/** |
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* @param Command[] $commands |
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* @param string $header |
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* @param string $footer |
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* |
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* @return self |
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*/ |
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public function showCommandsHelp(array $commands, string $header = '', string $footer = ''): self |
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{ |
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$this->maxCmdName = $commands ? \max(\array_map(function (Command $cmd) { |
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return \strlen($cmd->name()); |
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}, $commands)) : 0; |
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$this->showHelp('Commands', $commands, $header, $footer); |
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return $this; |
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} |
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/** |
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* Show help with headers and footers. |
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* |
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* @param string $for |
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* @param array $items |
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* @param string $header |
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* @param string $footer |
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* |
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* @return void |
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*/ |
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protected function showHelp(string $for, array $items, string $header = '', string $footer = '') |
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{ |
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if ($header) { |
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$this->writer->bold($header, true); |
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} |
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$this->writer->eol()->boldGreen($for . ':', true); |
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if (empty($items)) { |
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$this->writer->bold(' (n/a)', true); |
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return; |
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} |
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$space = 4; |
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foreach ($this->sortItems($items, $padLen) as $item) { |
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$name = $this->getName($item); |
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$this->writer->bold(' ' . \str_pad($name, $padLen + $space)); |
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$this->writer->comment($item->desc(), true); |
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} |
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if ($footer) { |
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$this->writer->eol()->yellow($footer, true); |
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} |
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} |
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/** |
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* Sort items by name. As a side effect sets max length of all names. |
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* |
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* @param Parameter[]|Command[] $items |
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* @param int $max |
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* |
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* @return array |
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*/ |
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protected function sortItems(array $items, &$max = 0): array |
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{ |
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$max = \max(\array_map(function ($item) { |
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return \strlen($this->getName($item)); |
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}, $items)); |
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\uasort($items, function ($a, $b) { |
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/* @var Parameter $b */ |
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/* @var Parameter $a */ |
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return $a->name() <=> $b->name(); |
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}); |
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return $items; |
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} |
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/** |
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* Prepare name for different items. |
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* |
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* @param Parameter|Command $item |
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* |
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* @return string |
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*/ |
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protected function getName($item): string |
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{ |
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$name = $item->name(); |
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if ($item instanceof Command) { |
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return \trim(\str_pad($name, $this->maxCmdName) . ' ' . $item->alias()); |
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} |
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return $this->label($item); |
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} |
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/** |
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* Get parameter label for humans. |
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* |
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* @param Parameter $item |
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* |
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* @return string |
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*/ |
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protected function label(Parameter $item) |
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{ |
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$name = $item->name(); |
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if ($item instanceof Option) { |
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$name = $item->short() . '|' . $item->long(); |
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} |
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$variad = $item->variadic() ? '...' : ''; |
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if ($item->required()) { |
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return "<$name$variad>"; |
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} |
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return "[$name$variad]"; |
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} |
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} |
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adhocore /
php-cli
