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<?php
/**
* 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 LGPL. For more information please see
* <http://phing.info>.
*
* @version SVN: $Id: f36d4f557c6a0a6350257652501164c4a22cab16 $
* @package phing.tasks.ext.pdo
*/
require_once 'phing/tasks/ext/pdo/PDOQuerySplitter.php';
/**
* Splits SQL source into queries using simple regular expressions
*
* Extracted from PDOSQLExecTask::runStatements()
*
* @author Hans Lellelid <hans@xmpl.org>
* @author Alexey Borzov <avb@php.net>
* @package phing.tasks.ext.pdo
* @version $Id: f36d4f557c6a0a6350257652501164c4a22cab16 $
*/
class DefaultPDOQuerySplitter extends PDOQuerySplitter
{
/**
* Delimiter type, one of PDOSQLExecTask::DELIM_ROW or PDOSQLExecTask::DELIM_NORMAL
* @var string
*/
private $delimiterType;
/**
* Leftover SQL from previous line
* @var string
*/
private $sqlBacklog = '';
/**
* Constructor, sets the parent task, reader with SQL source and delimiter type
*
* @param PDOSQLExecTask $parent
* @param Reader $reader
* @param string $delimiterType
*/
public function __construct(PDOSQLExecTask $parent, Reader $reader, $delimiterType = PDOSQLExecTask::DELIM_NORMAL)
{
parent::__construct($parent, $reader);
$this->delimiterType = $delimiterType;
}
/**
* Returns next query from SQL source, null if no more queries left
*
* In case of "row" delimiter type this searches for strings containing only
* delimiters. In case of "normal" delimiter type, this uses simple regular
* expression logic to search for delimiters.
*
* @return string|null
*/
public function nextQuery()
{
$sql = "";
$hasQuery = false;
while (($line = $this->sqlReader->readLine()) !== null) {
$delimiter = $this->parent->getDelimiter();
$project = $this->parent->getOwningTarget()->getProject();
$line = ProjectConfigurator::replaceProperties(
$project, trim($line), $project->getProperties()
);
if (($line != $delimiter) && (
StringHelper::startsWith("//", $line) ||
StringHelper::startsWith("--", $line) ||
StringHelper::startsWith("#", $line))) {
continue;
}
if (strlen($line) > 4
&& strtoupper(substr($line,0, 4)) == "REM ") {
continue;
}
// MySQL supports defining new delimiters
if (preg_match('/DELIMITER [\'"]?([^\'" $]+)[\'"]?/i', $line, $matches)) {
$this->parent->setDelimiter($matches[1]);
continue;
}
if ($this->sqlBacklog !== "") {
$sql = $this->sqlBacklog;
$this->sqlBacklog = "";
}
$sql .= " " . $line . "\n";
// SQL defines "--" as a comment to EOL
// and in Oracle it may contain a hint
// so we cannot just remove it, instead we must end it
if (strpos($line, "--") !== false) {
$sql .= "\n";
}
// DELIM_ROW doesn't need this (as far as i can tell)
if ($this->delimiterType == PDOSQLExecTask::DELIM_NORMAL) {
$reg = "#((?:\"(?:\\\\.|[^\"])*\"?)+|'(?:\\\\.|[^'])*'?|" . preg_quote($delimiter) . ")#";
$sqlParts = preg_split($reg, $sql, 0, PREG_SPLIT_DELIM_CAPTURE);
$this->sqlBacklog = "";
foreach ($sqlParts as $sqlPart) {
// we always want to append, even if it's a delim (which will be stripped off later)
$this->sqlBacklog .= $sqlPart;
// we found a single (not enclosed by ' or ") delimiter, so we can use all stuff before the delim as the actual query
if ($sqlPart === $delimiter) {
$sql = $this->sqlBacklog;
$this->sqlBacklog = "";
$hasQuery = true;
}
}
}
if ($hasQuery || ($this->delimiterType == PDOSQLExecTask::DELIM_ROW && $line == $delimiter)) {
// this assumes there is always a delimter on the end of the SQL statement.
$sql = StringHelper::substring($sql, 0, strlen($sql) - strlen($delimiter)
- ($this->delimiterType == PDOSQLExecTask::DELIM_ROW ? 2 : 1));
return $sql;
}
}
// Catch any statements not followed by ;
if ($sql !== "") {
return $sql;
}
return null;
}
}
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