/usr/share/php/Doctrine/DBAL/SQLParserUtils.php is in php-doctrine-dbal 2.4.3-1.
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/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL;
/**
* Utility class that parses sql statements with regard to types and parameters.
*
* @link www.doctrine-project.org
* @since 2.0
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class SQLParserUtils
{
const POSITIONAL_TOKEN = '\?';
const NAMED_TOKEN = '(?<!:):[a-zA-Z_][a-zA-Z0-9_]*';
// Quote characters within string literals can be preceded by a backslash.
const ESCAPED_SINGLE_QUOTED_TEXT = "'(?:[^'\\\\]|\\\\'?)*'";
const ESCAPED_DOUBLE_QUOTED_TEXT = '"(?:[^"\\\\]|\\\\"?)*"';
const ESCAPED_BACKTICK_QUOTED_TEXT = '`(?:[^`\\\\]|\\\\`?)*`';
/**
* Gets an array of the placeholders in an sql statements as keys and their positions in the query string.
*
* Returns an integer => integer pair (indexed from zero) for a positional statement
* and a string => int[] pair for a named statement.
*
* @param string $statement
* @param boolean $isPositional
*
* @return array
*/
static public function getPlaceholderPositions($statement, $isPositional = true)
{
$match = ($isPositional) ? '?' : ':';
if (strpos($statement, $match) === false) {
return array();
}
$token = ($isPositional) ? self::POSITIONAL_TOKEN : self::NAMED_TOKEN;
$paramMap = array();
foreach (self::getUnquotedStatementFragments($statement) as $fragment) {
preg_match_all("/$token/", $fragment[0], $matches, PREG_OFFSET_CAPTURE);
foreach ($matches[0] as $placeholder) {
if ($isPositional) {
$paramMap[] = $placeholder[1] + $fragment[1];
} else {
$pos = $placeholder[1] + $fragment[1];
$paramMap[$pos] = substr($placeholder[0], 1, strlen($placeholder[0]));
}
}
}
return $paramMap;
}
/**
* For a positional query this method can rewrite the sql statement with regard to array parameters.
*
* @param string $query The SQL query to execute.
* @param array $params The parameters to bind to the query.
* @param array $types The types the previous parameters are in.
*
* @return array
*
* @throws SQLParserUtilsException
*/
static public function expandListParameters($query, $params, $types)
{
$isPositional = is_int(key($params));
$arrayPositions = array();
$bindIndex = -1;
foreach ($types as $name => $type) {
++$bindIndex;
if ($type !== Connection::PARAM_INT_ARRAY && $type !== Connection::PARAM_STR_ARRAY) {
continue;
}
if ($isPositional) {
$name = $bindIndex;
}
$arrayPositions[$name] = false;
}
if (( ! $arrayPositions && $isPositional)) {
return array($query, $params, $types);
}
$paramPos = self::getPlaceholderPositions($query, $isPositional);
if ($isPositional) {
$paramOffset = 0;
$queryOffset = 0;
foreach ($paramPos as $needle => $needlePos) {
if ( ! isset($arrayPositions[$needle])) {
continue;
}
$needle += $paramOffset;
$needlePos += $queryOffset;
$count = count($params[$needle]);
$params = array_merge(
array_slice($params, 0, $needle),
$params[$needle],
array_slice($params, $needle + 1)
);
$types = array_merge(
array_slice($types, 0, $needle),
$count ?
array_fill(0, $count, $types[$needle] - Connection::ARRAY_PARAM_OFFSET) : // array needles are at PDO::PARAM_* + 100
array(),
array_slice($types, $needle + 1)
);
$expandStr = $count ? implode(", ", array_fill(0, $count, "?")) : 'NULL';
$query = substr($query, 0, $needlePos) . $expandStr . substr($query, $needlePos + 1);
$paramOffset += ($count - 1); // Grows larger by number of parameters minus the replaced needle.
$queryOffset += (strlen($expandStr) - 1);
}
return array($query, $params, $types);
}
$queryOffset = 0;
$typesOrd = array();
$paramsOrd = array();
foreach ($paramPos as $pos => $paramName) {
$paramLen = strlen($paramName) + 1;
$value = static::extractParam($paramName, $params, true);
if ( ! isset($arrayPositions[$paramName]) && ! isset($arrayPositions[':' . $paramName])) {
$pos += $queryOffset;
$queryOffset -= ($paramLen - 1);
$paramsOrd[] = $value;
$typesOrd[] = static::extractParam($paramName, $types, false, \PDO::PARAM_STR);
$query = substr($query, 0, $pos) . '?' . substr($query, ($pos + $paramLen));
continue;
}
$count = count($value);
$expandStr = $count > 0 ? implode(', ', array_fill(0, $count, '?')) : 'NULL';
foreach ($value as $val) {
$paramsOrd[] = $val;
$typesOrd[] = static::extractParam($paramName, $types, false) - Connection::ARRAY_PARAM_OFFSET;
}
$pos += $queryOffset;
$queryOffset += (strlen($expandStr) - $paramLen);
$query = substr($query, 0, $pos) . $expandStr . substr($query, ($pos + $paramLen));
}
return array($query, $paramsOrd, $typesOrd);
}
/**
* Slice the SQL statement around pairs of quotes and
* return string fragments of SQL outside of quoted literals.
* Each fragment is captured as a 2-element array:
*
* 0 => matched fragment string,
* 1 => offset of fragment in $statement
*
* @param string $statement
* @return array
*/
static private function getUnquotedStatementFragments($statement)
{
$literal = self::ESCAPED_SINGLE_QUOTED_TEXT . '|' .
self::ESCAPED_DOUBLE_QUOTED_TEXT . '|' .
self::ESCAPED_BACKTICK_QUOTED_TEXT;
preg_match_all("/([^'\"`]+)(?:$literal)?/s", $statement, $fragments, PREG_OFFSET_CAPTURE);
return $fragments[1];
}
/**
* @param string $paramName The name of the parameter (without a colon in front)
* @param array $paramsOrTypes A hash of parameters or types
* @param bool $isParam
* @param mixed $defaultValue An optional default value. If omitted, an exception is thrown
*
* @throws SQLParserUtilsException
* @return mixed
*/
static private function extractParam($paramName, $paramsOrTypes, $isParam, $defaultValue = null)
{
if (array_key_exists($paramName, $paramsOrTypes)) {
return $paramsOrTypes[$paramName];
}
// Hash keys can be prefixed with a colon for compatibility
if (array_key_exists(':' . $paramName, $paramsOrTypes)) {
return $paramsOrTypes[':' . $paramName];
}
if (null !== $defaultValue) {
return $defaultValue;
}
if ($isParam) {
throw SQLParserUtilsException::missingParam($paramName);
}
throw SQLParserUtilsException::missingType($paramName);
}
}
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