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<?php declare(strict_types=1);
/*
* This file is part of sebastian/cli-parser.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\CliParser;
use function array_map;
use function array_merge;
use function array_shift;
use function array_slice;
use function assert;
use function count;
use function current;
use function explode;
use function is_array;
use function is_int;
use function is_string;
use function key;
use function next;
use function preg_replace;
use function reset;
use function sort;
use function str_ends_with;
use function str_starts_with;
use function strlen;
use function strstr;
use function substr;
final class Parser
{
/**
* @psalm-param list<string> $argv
* @psalm-param list<string> $longOptions
*
* @psalm-return array{0: array, 1: array}
*
* @throws AmbiguousOptionException
* @throws OptionDoesNotAllowArgumentException
* @throws RequiredOptionArgumentMissingException
* @throws UnknownOptionException
*/
public function parse(array $argv, string $shortOptions, array $longOptions = null): array
{
if (empty($argv)) {
return [[], []];
}
$options = [];
$nonOptions = [];
if ($longOptions) {
sort($longOptions);
}
if (isset($argv[0][0]) && $argv[0][0] !== '-') {
array_shift($argv);
}
reset($argv);
$argv = array_map('trim', $argv);
while (false !== $arg = current($argv)) {
$i = key($argv);
assert(is_int($i));
next($argv);
if ($arg === '') {
continue;
}
if ($arg === '--') {
$nonOptions = array_merge($nonOptions, array_slice($argv, $i + 1));
break;
}
if ($arg[0] !== '-' || (strlen($arg) > 1 && $arg[1] === '-' && !$longOptions)) {
$nonOptions[] = $arg;
continue;
}
if (strlen($arg) > 1 && $arg[1] === '-' && is_array($longOptions)) {
$this->parseLongOption(
substr($arg, 2),
$longOptions,
$options,
$argv
);
continue;
}
$this->parseShortOption(
substr($arg, 1),
$shortOptions,
$options,
$argv
);
}
return [$options, $nonOptions];
}
/**
* @throws RequiredOptionArgumentMissingException
*/
private function parseShortOption(string $argument, string $shortOptions, array &$options, array &$argv): void
{
$argumentLength = strlen($argument);
for ($i = 0; $i < $argumentLength; $i++) {
$option = $argument[$i];
$optionArgument = null;
if ($argument[$i] === ':' || ($spec = strstr($shortOptions, $option)) === false) {
throw new UnknownOptionException('-' . $option);
}
if (strlen($spec) > 1 && $spec[1] === ':') {
if ($i + 1 < $argumentLength) {
$options[] = [$option, substr($argument, $i + 1)];
break;
}
if (!(strlen($spec) > 2 && $spec[2] === ':')) {
$optionArgument = current($argv);
if (!$optionArgument) {
throw new RequiredOptionArgumentMissingException('-' . $option);
}
assert(is_string($optionArgument));
next($argv);
}
}
$options[] = [$option, $optionArgument];
}
}
/**
* @psalm-param list<string> $longOptions
*
* @throws AmbiguousOptionException
* @throws OptionDoesNotAllowArgumentException
* @throws RequiredOptionArgumentMissingException
* @throws UnknownOptionException
*/
private function parseLongOption(string $argument, array $longOptions, array &$options, array &$argv): void
{
$count = count($longOptions);
$list = explode('=', $argument);
$option = $list[0];
$optionArgument = null;
if (count($list) > 1) {
$optionArgument = $list[1];
}
$optionLength = strlen($option);
foreach ($longOptions as $i => $longOption) {
$opt_start = substr($longOption, 0, $optionLength);
if ($opt_start !== $option) {
continue;
}
$opt_rest = substr($longOption, $optionLength);
if ($opt_rest !== '' && $i + 1 < $count && $option[0] !== '=' && str_starts_with($longOptions[$i + 1], $option)) {
throw new AmbiguousOptionException('--' . $option);
}
if (str_ends_with($longOption, '=')) {
if (!str_ends_with($longOption, '==') && !strlen((string) $optionArgument)) {
if (false === $optionArgument = current($argv)) {
throw new RequiredOptionArgumentMissingException('--' . $option);
}
next($argv);
}
} elseif ($optionArgument) {
throw new OptionDoesNotAllowArgumentException('--' . $option);
}
$fullOption = '--' . preg_replace('/={1,2}$/', '', $longOption);
$options[] = [$fullOption, $optionArgument];
return;
}
throw new UnknownOptionException('--' . $option);
}
}