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<?php
/**
 * CLI interface.
 */

declare(strict_types=1);

namespace PhpMyAdmin\SqlParser\Utils;

use PhpMyAdmin\SqlParser\Context;
use PhpMyAdmin\SqlParser\Lexer;
use PhpMyAdmin\SqlParser\Parser;

use function count;
use function getopt;
use function implode;
use function in_array;
use function rtrim;
use function stream_get_contents;
use function stream_select;
use function var_export;

use const STDIN;

/**
 * CLI interface.
 */
class CLI
{
    /**
     * @param string[]|false[] $params
     * @param string[]         $longopts
     *
     * @return void
     */
    public function mergeLongOpts(&$params, &$longopts)
    {
        foreach ($longopts as $value) {
            $value = rtrim($value, ':');
            if (! isset($params[$value])) {
                continue;
            }

$params[$value[0]] = $params[$value];
        }
    }

/**
     * @return void
     */
    public function usageHighlight()
    {
        echo "Usage: highlight-query --query SQL [--format html|cli|text] [--ansi]\n";
        echo "       cat file.sql | highlight-query\n";
    }

/**
     * @param string $opt
     * @param array  $long
     *
     * @return string[]|false[]|false
     */
    public function getopt($opt, $long)
    {
        return getopt($opt, $long);
    }

/**
     * @return mixed|false
     */
    public function parseHighlight()
    {
        $longopts = [
            'help',
            'query:',
            'format:',
            'ansi',
        ];
        $params = $this->getopt('hq:f:a', $longopts);
        if ($params === false) {
            return false;
        }

$this->mergeLongOpts($params, $longopts);
        if (! isset($params['f'])) {
            $params['f'] = 'cli';
        }

if (! in_array($params['f'], ['html', 'cli', 'text'])) {
            echo "ERROR: Invalid value for format!\n";

return false;
        }

return $params;
    }

/**
     * @return int
     */
    public function runHighlight()
    {
        $params = $this->parseHighlight();
        if ($params === false) {
            return 1;
        }

if (isset($params['h'])) {
            $this->usageHighlight();

return 0;
        }

if (! isset($params['q'])) {
            $stdIn = $this->readStdin();

if ($stdIn) {
                $params['q'] = $stdIn;
            }
        }

if (isset($params['a'])) {
            Context::setMode('ANSI_QUOTES');
        }

if (isset($params['q'])) {
            echo Formatter::format(
                $params['q'],
                ['type' => $params['f']]
            );
            echo "\n";

return 0;
        }

echo "ERROR: Missing parameters!\n";
        $this->usageHighlight();

return 1;
    }

/**
     * @return void
     */
    public function usageLint()
    {
        echo "Usage: lint-query --query SQL [--ansi]\n";
        echo "       cat file.sql | lint-query\n";
    }

/**
     * @return mixed
     */
    public function parseLint()
    {
        $longopts = [
            'help',
            'query:',
            'context:',
            'ansi',
        ];
        $params = $this->getopt('hq:c:a', $longopts);
        $this->mergeLongOpts($params, $longopts);

return $params;
    }

/**
     * @return int
     */
    public function runLint()
    {
        $params = $this->parseLint();
        if ($params === false) {
            return 1;
        }

if (isset($params['h'])) {
            $this->usageLint();

return 0;
        }

if (isset($params['c'])) {
            Context::load($params['c']);
        }

if (! isset($params['q'])) {
            $stdIn = $this->readStdin();

if ($stdIn) {
                $params['q'] = $stdIn;
            }
        }

if (isset($params['a'])) {
            Context::setMode('ANSI_QUOTES');
        }

if (isset($params['q'])) {
            $lexer = new Lexer($params['q'], false);
            $parser = new Parser($lexer->list);
            $errors = Error::get([$lexer, $parser]);
            if (count($errors) === 0) {
                return 0;
            }

$output = Error::format($errors);
            echo implode("\n", $output);
            echo "\n";

return 10;
        }

echo "ERROR: Missing parameters!\n";
        $this->usageLint();

return 1;
    }

/**
     * @return void
     */
    public function usageTokenize()
    {
        echo "Usage: tokenize-query --query SQL [--ansi]\n";
        echo "       cat file.sql | tokenize-query\n";
    }

/**
     * @return mixed
     */
    public function parseTokenize()
    {
        $longopts = [
            'help',
            'query:',
            'ansi',
        ];
        $params = $this->getopt('hq:a', $longopts);
        $this->mergeLongOpts($params, $longopts);

return $params;
    }

/**
     * @return int
     */
    public function runTokenize()
    {
        $params = $this->parseTokenize();
        if ($params === false) {
            return 1;
        }

if (isset($params['h'])) {
            $this->usageTokenize();

return 0;
        }

if (! isset($params['q'])) {
            $stdIn = $this->readStdin();

if ($stdIn) {
                $params['q'] = $stdIn;
            }
        }

if (isset($params['a'])) {
            Context::setMode('ANSI_QUOTES');
        }

if (isset($params['q'])) {
            $lexer = new Lexer($params['q'], false);
            foreach ($lexer->list->tokens as $idx => $token) {
                echo '[TOKEN ', $idx, "]\n";
                echo 'Type = ', $token->type, "\n";
                echo 'Flags = ', $token->flags, "\n";
                echo 'Value = ';
                var_export($token->value);
                echo "\n";
                echo 'Token = ';
                var_export($token->token);
                echo "\n";
                echo "\n";
            }

return 0;
        }

echo "ERROR: Missing parameters!\n";
        $this->usageTokenize();

return 1;
    }

/**
     * @return string|false
     */
    public function readStdin()
    {
        $read = [STDIN];
        $write = [];
        $except = [];

// Assume there's nothing to be read from STDIN.
        $stdin = null;

// Try to read from STDIN.  Wait 0.2 second before timing out.
        $result = stream_select($read, $write, $except, 0, 2000);

if ($result > 0) {
            $stdin = stream_get_contents(STDIN);
        }

return $stdin;
    }
}

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