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<?php
namespace Laminas\Db\Adapter\Platform;
use function db2_escape_string;
use function function_exists;
use function implode;
use function is_array;
use function preg_split;
use function sprintf;
use function str_replace;
use function strtolower;
use function trigger_error;
use const PREG_SPLIT_DELIM_CAPTURE;
use const PREG_SPLIT_NO_EMPTY;
class IbmDb2 extends AbstractPlatform
{
/** @var string */
protected $identifierSeparator = '.';
/**
* @param array $options
*/
public function __construct($options = [])
{
if (
isset($options['quote_identifiers'])
&& ($options['quote_identifiers'] === false
|| $options['quote_identifiers'] === 'false'
)
) {
$this->quoteIdentifiers = false;
}
if (isset($options['identifier_separator'])) {
$this->identifierSeparator = $options['identifier_separator'];
}
}
/**
* {@inheritDoc}
*/
public function getName()
{
return 'IBM DB2';
}
/**
* {@inheritDoc}
*/
public function quoteIdentifierInFragment($identifier, array $safeWords = [])
{
if (! $this->quoteIdentifiers) {
return $identifier;
}
$safeWordsInt = ['*' => true, ' ' => true, '.' => true, 'as' => true];
foreach ($safeWords as $sWord) {
$safeWordsInt[strtolower($sWord)] = true;
}
$parts = preg_split(
'/([^0-9,a-z,A-Z$#_:])/i',
$identifier,
-1,
PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY
);
$identifier = '';
foreach ($parts as $part) {
$identifier .= isset($safeWordsInt[strtolower($part)])
? $part
: $this->quoteIdentifier[0]
. str_replace($this->quoteIdentifier[0], $this->quoteIdentifierTo, $part)
. $this->quoteIdentifier[1];
}
return $identifier;
}
/**
* {@inheritDoc}
*/
public function quoteIdentifierChain($identifierChain)
{
if ($this->quoteIdentifiers === false) {
if (is_array($identifierChain)) {
return implode($this->identifierSeparator, $identifierChain);
} else {
return $identifierChain;
}
}
$identifierChain = str_replace('"', '\\"', $identifierChain);
if (is_array($identifierChain)) {
$identifierChain = implode('"' . $this->identifierSeparator . '"', $identifierChain);
}
return '"' . $identifierChain . '"';
}
/**
* {@inheritDoc}
*/
public function quoteValue($value)
{
if (function_exists('db2_escape_string')) {
return '\'' . db2_escape_string($value) . '\'';
}
trigger_error(sprintf(
'Attempting to quote a value in %s without extension/driver support '
. 'can introduce security vulnerabilities in a production environment.',
static::class
));
return '\'' . str_replace("'", "''", $value) . '\'';
}
/**
* {@inheritDoc}
*/
public function quoteTrustedValue($value)
{
if (function_exists('db2_escape_string')) {
return '\'' . db2_escape_string($value) . '\'';
}
return '\'' . str_replace("'", "''", $value) . '\'';
}
/**
* {@inheritDoc}
*/
public function getIdentifierSeparator()
{
return $this->identifierSeparator;
}
}