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<?php
/**
* Config file generator
*/
declare(strict_types=1);
namespace PhpMyAdmin\Setup;
use PhpMyAdmin\Config\ConfigFile;
use PhpMyAdmin\Version;
use function array_keys;
use function count;
use function gmdate;
use function implode;
use function is_array;
use function preg_replace;
use function str_contains;
use function strtr;
use function var_export;
use const DATE_RFC1123;
/**
* Config file generation class
*/
class ConfigGenerator
{
/**
* Creates config file
*
* @param ConfigFile $cf Config file instance
*
* @return string
*/
public static function getConfigFile(ConfigFile $cf)
{
$eol = isset($_SESSION['eol']) && $_SESSION['eol'] === 'win' ? "\r\n" : "\n";
$conf = $cf->getConfig();
// header
$ret = '<?php' . $eol
. '/**' . $eol
. ' * Generated configuration file' . $eol
. ' * Generated by: phpMyAdmin '
. Version::VERSION
. ' setup script' . $eol
. ' * Date: ' . gmdate(DATE_RFC1123) . $eol
. ' */' . $eol . $eol;
//servers
if (! empty($conf['Servers'])) {
$ret .= self::getServerPart($cf, $eol, $conf['Servers']);
unset($conf['Servers']);
}
// other settings
$persistKeys = $cf->getPersistKeysMap();
foreach ($conf as $k => $v) {
$k = preg_replace('/[^A-Za-z0-9_]/', '_', (string) $k);
$ret .= self::getVarExport($k, $v, $eol);
if (! isset($persistKeys[$k])) {
continue;
}
unset($persistKeys[$k]);
}
// keep 1d array keys which are present in $persist_keys (config.values.php)
foreach (array_keys($persistKeys) as $k) {
if (str_contains($k, '/')) {
continue;
}
$k = preg_replace('/[^A-Za-z0-9_]/', '_', $k);
$ret .= self::getVarExport($k, $cf->getDefault($k), $eol);
}
return $ret . $eol;
}
/**
* Returns exported configuration variable
*
* @param string $var_name configuration name
* @param mixed $var_value configuration value(s)
* @param string $eol line ending
*
* @return string
*/
private static function getVarExport($var_name, $var_value, string $eol)
{
if (! is_array($var_value) || empty($var_value)) {
return "\$cfg['" . $var_name . "'] = "
. var_export($var_value, true) . ';' . $eol;
}
if (self::isZeroBasedArray($var_value)) {
return "\$cfg['" . $var_name . "'] = "
. self::exportZeroBasedArray($var_value, $eol)
. ';' . $eol;
}
$ret = '';
// string keys: $cfg[key][subkey] = value
foreach ($var_value as $k => $v) {
$k = preg_replace('/[^A-Za-z0-9_]/', '_', $k);
$ret .= "\$cfg['" . $var_name . "']['" . $k . "'] = "
. var_export($v, true) . ';' . $eol;
}
return $ret;
}
/**
* Check whether $array is a continuous 0-based array
*
* @param array $array Array to check
*/
private static function isZeroBasedArray(array $array): bool
{
for ($i = 0, $nb = count($array); $i < $nb; $i++) {
if (! isset($array[$i])) {
return false;
}
}
return true;
}
/**
* Exports continuous 0-based array
*
* @param array $array Array to export
* @param string $eol Newline string
*
* @return string
*/
private static function exportZeroBasedArray(array $array, string $eol)
{
$retv = [];
foreach ($array as $v) {
$retv[] = var_export($v, true);
}
$ret = '[';
if (count($retv) <= 4) {
// up to 4 values - one line
return $ret . implode(', ', $retv) . ']';
}
// more than 4 values - value per line
$imax = count($retv);
for ($i = 0; $i < $imax; $i++) {
$ret .= ($i > 0 ? ',' : '') . $eol . ' ' . $retv[$i];
}
return $ret . ']';
}
/**
* Generate server part of config file
*
* @param ConfigFile $cf Config file
* @param string $eol Carriage return char
* @param array $servers Servers list
*
* @return string|null
*/
protected static function getServerPart(ConfigFile $cf, string $eol, array $servers)
{
if ($cf->getServerCount() === 0) {
return null;
}
$ret = '/* Servers configuration */' . $eol . '$i = 0;' . $eol . $eol;
foreach ($servers as $id => $server) {
$ret .= '/* Server: '
. strtr($cf->getServerName($id) . ' [' . $id . '] ', '*/', '-')
. '*/' . $eol
. '$i++;' . $eol;
foreach ($server as $k => $v) {
$k = preg_replace('/[^A-Za-z0-9_]/', '_', (string) $k);
$ret .= "\$cfg['Servers'][\$i]['" . $k . "'] = "
. (is_array($v) && self::isZeroBasedArray($v)
? self::exportZeroBasedArray($v, $eol)
: var_export($v, true))
. ';' . $eol;
}
$ret .= $eol;
}
$ret .= '/* End of servers configuration */' . $eol . $eol;
return $ret;
}
}
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