Viewing file:  Parser.php (4.14 KB) -rw-r--r--
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<?php
namespace Illuminate\Console;
use Illuminate\Support\Str;
use InvalidArgumentException;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
class Parser
{
/**
* Parse the given console command definition into an array.
*
* @param string $expression
* @return array
*
* @throws \InvalidArgumentException
*/
public static function parse($expression)
{
if (trim($expression) === '') {
throw new InvalidArgumentException('Console command definition is empty.');
}
preg_match('/[^\s]+/', $expression, $matches);
if (isset($matches[0])) {
$name = $matches[0];
} else {
throw new InvalidArgumentException('Unable to determine command name from signature.');
}
preg_match_all('/\{\s*(.*?)\s*\}/', $expression, $matches);
$tokens = isset($matches[1]) ? $matches[1] : [];
if (count($tokens)) {
return array_merge([$name], static::parameters($tokens));
}
return [$name, [], []];
}
/**
* Extract all of the parameters from the tokens.
*
* @param array $tokens
* @return array
*/
protected static function parameters(array $tokens)
{
$arguments = [];
$options = [];
foreach ($tokens as $token) {
if (! Str::startsWith($token, '--')) {
$arguments[] = static::parseArgument($token);
} else {
$options[] = static::parseOption(ltrim($token, '-'));
}
}
return [$arguments, $options];
}
/**
* Parse an argument expression.
*
* @param string $token
* @return \Symfony\Component\Console\Input\InputArgument
*/
protected static function parseArgument($token)
{
$description = null;
if (Str::contains($token, ' : ')) {
list($token, $description) = explode(' : ', $token, 2);
$token = trim($token);
$description = trim($description);
}
switch (true) {
case Str::endsWith($token, '?*'):
return new InputArgument(trim($token, '?*'), InputArgument::IS_ARRAY, $description);
case Str::endsWith($token, '*'):
return new InputArgument(trim($token, '*'), InputArgument::IS_ARRAY | InputArgument::REQUIRED, $description);
case Str::endsWith($token, '?'):
return new InputArgument(trim($token, '?'), InputArgument::OPTIONAL, $description);
case preg_match('/(.+)\=(.+)/', $token, $matches):
return new InputArgument($matches[1], InputArgument::OPTIONAL, $description, $matches[2]);
default:
return new InputArgument($token, InputArgument::REQUIRED, $description);
}
}
/**
* Parse an option expression.
*
* @param string $token
* @return \Symfony\Component\Console\Input\InputOption
*/
protected static function parseOption($token)
{
$description = null;
if (Str::contains($token, ' : ')) {
list($token, $description) = explode(' : ', $token);
$token = trim($token);
$description = trim($description);
}
$shortcut = null;
$matches = preg_split('/\s*\|\s*/', $token, 2);
if (isset($matches[1])) {
$shortcut = $matches[0];
$token = $matches[1];
}
switch (true) {
case Str::endsWith($token, '='):
return new InputOption(trim($token, '='), $shortcut, InputOption::VALUE_OPTIONAL, $description);
case Str::endsWith($token, '=*'):
return new InputOption(trim($token, '=*'), $shortcut, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, $description);
case preg_match('/(.+)\=(.+)/', $token, $matches):
return new InputOption($matches[1], $shortcut, InputOption::VALUE_OPTIONAL, $description, $matches[2]);
default:
return new InputOption($token, $shortcut, InputOption::VALUE_NONE, $description);
}
}
}
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