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<?php namespace Tarsana\Command\Commands; |
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use Tarsana\Command\Helpers\SyntaxHelper; |
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use Tarsana\Command\SubCommand; |
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use Tarsana\Syntax\ArraySyntax; |
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use Tarsana\Syntax\ObjectSyntax; |
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use Tarsana\Syntax\OptionalSyntax; |
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use Tarsana\Syntax\Syntax; |
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class HelpCommand extends SubCommand { |
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protected $helper; |
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protected function init() |
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{ |
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$this->name('Help') |
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->description('Shows the help message.'); |
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$this->helper = SyntaxHelper::instance(); |
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} |
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protected function execute() |
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{ |
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$parent = $this->parent; |
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$text = "<info>{$parent->name}</info> version <info>{$parent->version}</info>" |
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. "<br><br>{$parent->description}<br><br>" |
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. $this->syntaxHelp() |
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. $this->optionsHelp() |
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. $this->subCommandsHelp(); |
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$this->console()->out($text); |
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} |
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protected function syntaxHelp() : string |
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{ |
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$syntax = $this->parent->syntax(); |
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$helper = $this->helper; |
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$text = ''; |
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if ($syntax) { |
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$string = $helper->asString($syntax); |
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$text .= "Syntax: <success>[options] {$string}</success><br>" |
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. "Arguments:<br>"; |
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foreach ($syntax->fields() as $name => $s) { |
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$text .= $this->fieldHelp($name, $s); |
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} |
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} |
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return $text; |
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} |
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protected function optionsHelp() : string |
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{ |
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$options = array_keys($this->parent->options()); |
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$text = ''; |
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if (!empty($options)) { |
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$text .= 'Options:<br>'; |
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foreach ($options as $name) { |
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$description = $this->parent()->describe($name); |
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$text .= "<tab><warn>{$name}</warn> {$description}<br>"; |
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} |
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} |
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return $text; |
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} |
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protected function subCommandsHelp() : string |
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{ |
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$subCommands = $this->parent->commands(); |
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$text = ''; |
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if (!empty($subCommands)) { |
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$text .= 'SubCommands:<br>'; |
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foreach ($subCommands as $name => $cmd) { |
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$text .= "<tab><warn>{$name}</warn> {$cmd->description()}<br>"; |
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} |
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} |
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return $text; |
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} |
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protected function fieldHelp( |
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string $name, Syntax $s, string $prefix = '', int $level = 1 |
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) : string |
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{ |
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$tabs = str_repeat('<tab>', $level); |
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$optional = ($s instanceof OptionalSyntax); |
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if ($optional) |
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$default = 'default: ' . json_encode($s->getDefault()); |
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else |
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$default = 'required'; |
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$description = $this->parent()->describe($prefix.$name); |
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$syntax = $this->helper->asString($s); |
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$text = "{$tabs}<warn>{$name}</warn> <success>{$syntax}</success>" |
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. " {$description} <info>({$default})</info><br>"; |
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$level ++; |
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$prefix .= $name . '.'; |
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foreach ($this->helper->fields($s) as $field => $syntax) { |
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$text .= $this->fieldHelp($field, $syntax, $prefix, $level); |
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} |
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return $text; |
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} |
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} |
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tarsana /
command
