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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* This class extends ShapeRecord class to cater the following phpMyAdmin
* specific requirements.
*
* @package PhpMyAdmin-Import
* @subpackage ESRI_Shape
*/
namespace PMA\libraries\plugins\import;
/**
* 1) To load data from .dbf file only when the dBase extension is available.
* 2) To use PMA_importGetNextChunk() functionality to read data, rather than
* reading directly from a file. Using
* PMA\libraries\plugins\import\ImportShp::readFromBuffer() in place of fread().
* This makes it possible to use compressions.
*
* @package PhpMyAdmin-Import
* @subpackage ESRI_Shape
*/
class ShapeRecord extends \ShapeRecord
{
/**
* Loads a geometry data record from the file
*
* @param object &$SHPFile .shp file
* @param object &$DBFFile .dbf file
*
* @return void
* @see ShapeRecord::loadFromFile()
*/
public function loadFromFile(&$SHPFile, &$DBFFile)
{
$this->DBFFile = $DBFFile;
$this->_loadHeaders();
switch ($this->shapeType) {
case 0:
$this->_loadNullRecord();
break;
case 1:
$this->_loadPointRecord();
break;
case 3:
$this->_loadPolyLineRecord();
break;
case 5:
$this->_loadPolygonRecord();
break;
case 8:
$this->_loadMultiPointRecord();
break;
default:
$this->setError(
sprintf(
__("Geometry type '%s' is not supported by MySQL."),
$this->shapeType
)
);
break;
}
if (extension_loaded('dbase') && isset($this->DBFFile)) {
$this->_loadDBFData();
}
}
/**
* Loads metadata from the ESRI shape record header
*
* @return void
* @see ShapeRecord::_loadHeaders()
*/
public function _loadHeaders()
{
$this->recordNumber = loadData("N", ImportShp::readFromBuffer(4));
ImportShp::readFromBuffer(4);
$this->shapeType = loadData("V", ImportShp::readFromBuffer(4));
}
/**
* Loads data from a point record
*
* @return array
* @see ShapeRecord::_loadPoint()
*/
public function _loadPoint()
{
$data = array();
$data["x"] = loadData("d", ImportShp::readFromBuffer(8));
$data["y"] = loadData("d", ImportShp::readFromBuffer(8));
return $data;
}
/**
* Loads data from a multipoint record
*
* @return void
* @see ShapeRecord::_loadMultiPointRecord()
*/
public function _loadMultiPointRecord()
{
$this->SHPData = array();
$this->SHPData["xmin"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["ymin"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["xmax"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["ymax"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["numpoints"] = loadData("V", ImportShp::readFromBuffer(4));
for ($i = 0; $i <= $this->SHPData["numpoints"]; $i++) {
$this->SHPData["points"][] = $this->_loadPoint();
}
}
/**
* Loads data from a polyline record
*
* @return void
* @see ShapeRecord::_loadPolyLineRecord()
*/
public function _loadPolyLineRecord()
{
$this->SHPData = array();
$this->SHPData["xmin"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["ymin"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["xmax"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["ymax"] = loadData("d", ImportShp::readFromBuffer(8));
$this->SHPData["numparts"] = loadData("V", ImportShp::readFromBuffer(4));
$this->SHPData["numpoints"] = loadData("V", ImportShp::readFromBuffer(4));
for ($i = 0; $i < $this->SHPData["numparts"]; $i++) {
$this->SHPData["parts"][$i] = loadData(
"V",
ImportShp::readFromBuffer(4)
);
}
$readPoints = 0;
foreach ($this->SHPData["parts"] as &$partData) {
if (!isset($partData["points"])
|| !is_array($partData["points"])
) {
$partData = array(
'points' => array()
);
}
while (!in_array($readPoints, $this->SHPData["parts"])
&& ($readPoints < ($this->SHPData["numpoints"]))
) {
$partData["points"][] = $this->_loadPoint();
$readPoints++;
}
}
}
}