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<?php |
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/** |
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* phpMyAdmin ShapeFile library |
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* <https://github.com/phpmyadmin/shapefile/> |
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* |
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* Copyright 2006-2007 Ovidio <ovidio AT users.sourceforge.net> |
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* Copyright 2016 Michal Čihař <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, you can download one from |
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* https://www.gnu.org/copyleft/gpl.html. |
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*/ |
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namespace ShapeFile; |
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/** |
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* ShapeFile class |
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* |
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* @package ShapeFile |
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*/ |
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class ShapeFile { |
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public $FileName; |
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private $SHPFile = null; |
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private $SHXFile = null; |
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private $DBFFile = null; |
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public $DBFHeader; |
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public $lastError = ''; |
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public $boundingBox = array('xmin' => 0.0, 'ymin' => 0.0, 'xmax' => 0.0, 'ymax' => 0.0); |
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private $fileLength = 0; |
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public $shapeType = 0; |
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public $records; |
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private static $shape_names = array( |
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0 => 'Null Shape', |
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1 => 'Point', |
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3 => 'PolyLine', |
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5 => 'Polygon', |
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8 => 'MultiPoint', |
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11 => 'PointZ', |
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13 => 'PolyLineZ', |
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15 => 'PolygonZ', |
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18 => 'MultiPointZ', |
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21 => 'PointM', |
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23 => 'PolyLineM', |
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25 => 'PolygonM', |
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28 => 'MultiPointM', |
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31 => 'MultiPatch', |
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); |
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/** |
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* Checks whether dbase manipuations are supported. |
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* |
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* @return bool |
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*/ |
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public static function supports_dbase() |
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{ |
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return extension_loaded('dbase'); |
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} |
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/** |
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* @param integer $shapeType |
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*/ |
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public function __construct($shapeType, $boundingBox = array('xmin' => 0.0, 'ymin' => 0.0, 'xmax' => 0.0, 'ymax' => 0.0), $FileName = null) { |
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$this->shapeType = $shapeType; |
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$this->boundingBox = $boundingBox; |
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$this->FileName = $FileName; |
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$this->fileLength = 50; // The value for file length is the total length of the file in 16-bit words (including the fifty 16-bit words that make up the header). |
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} |
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/** |
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* @param string $FileName |
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*/ |
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21 |
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public function loadFromFile($FileName) { |
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if (!empty($FileName)) { |
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$this->FileName = $FileName; |
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21 |
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$result = $this->_openSHPFile(); |
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} else { |
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/* We operate on buffer emulated by readSHP / eofSHP */ |
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$result = true; |
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} |
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if ($result && ($this->_openDBFFile())) { |
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if (!$this->_loadHeaders()) { |
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1 |
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$this->_closeSHPFile(); |
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1 |
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$this->_closeDBFFile(); |
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1 |
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return false; |
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} |
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if (!$this->_loadRecords()) { |
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$this->_closeSHPFile(); |
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$this->_closeDBFFile(); |
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return false; |
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} |
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$this->_closeSHPFile(); |
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$this->_closeDBFFile(); |
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return true; |
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} else { |
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return false; |
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} |
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} |
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/** |
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* @param string|null $FileName Name of file to open |
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*/ |
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public function saveToFile($FileName = null) { |
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if (!is_null($FileName)) { |
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$this->FileName = $FileName; |
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} |
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if (($this->_openSHPFile(true)) && ($this->_openSHXFile(true)) && ($this->_openDBFFile(true))) { |
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$this->_saveHeaders(); |
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$this->_saveRecords(); |
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$this->_closeSHPFile(); |
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$this->_closeSHXFile(); |
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$this->_closeDBFFile(); |
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} else { |
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return false; |
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} |
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13 |
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} |
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/** |
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* Generates filename with given extension |
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* |
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* @param string $extension Extension to use (including dot) |
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* |
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* @return string |
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*/ |
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private function _getFilename($extension) |
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{ |
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return str_replace('.*', $extension, $this->FileName); |
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} |
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/** |
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* Updates bounding box based on SHPData |
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* |
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* @param string $type Type of box |
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* @param array $data ShapeRecord SHPData |
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* |
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* @return void |
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*/ |
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private function updateBBox($type, $data) |
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{ |
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$min = $type.'min'; |
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$max = $type.'max'; |
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if (!isset($this->boundingBox[$min]) || $this->boundingBox[$min] == 0.0 || ($this->boundingBox[$min] > $data[$min])) { |
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$this->boundingBox[$min] = $data[$min]; |
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} |
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if (!isset($this->boundingBox[$max]) || $this->boundingBox[$max] == 0.0 || ($this->boundingBox[$max] < $data[$max])) { |
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$this->boundingBox[$max] = $data[$max]; |
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} |
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} |
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/** |
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* @param ShapeRecord $record |
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*/ |
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public function addRecord($record) { |
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if ((isset($this->DBFHeader)) && (is_array($this->DBFHeader))) { |
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$record->updateDBFInfo($this->DBFHeader); |
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} |
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$this->fileLength += ($record->getContentLength() + 4); |
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$this->records[] = $record; |
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$this->records[count($this->records) - 1]->recordNumber = count($this->records); |
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$this->updateBBox('x', $record->SHPData); |
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$this->updateBBox('y', $record->SHPData); |
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if (in_array($this->shapeType, array(11, 13, 15, 18, 21, 23, 25, 28))) { |
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$this->updateBBox('m', $record->SHPData); |
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} |
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if (in_array($this->shapeType, array(11, 13, 15, 18))) { |
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$this->updateBBox('z', $record->SHPData); |
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} |
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return (count($this->records) - 1); |
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} |
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/** |
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* @param integer $index |
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*/ |
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public function deleteRecord($index) { |
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if (isset($this->records[$index])) { |
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$this->fileLength -= ($this->records[$index]->getContentLength() + 4); |
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$count = count($this->records) - 1; |
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for ($i = $index; $i < $count; $i++) { |
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$this->records[$i] = $this->records[$i + 1]; |
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} |
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unset($this->records[count($this->records) - 1]); |
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$this->_deleteRecordFromDBF($index); |
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} |
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} |
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public function getDBFHeader() { |
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return $this->DBFHeader; |
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} |
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public function setDBFHeader($header) { |
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$this->DBFHeader = $header; |
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12 |
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$count = count($this->records); |
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for ($i = 0; $i < $count; $i++) { |
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$this->records[$i]->updateDBFInfo($header); |
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} |
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} |
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/** |
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* Lookups value in the DBF file and returs index |
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* |
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* @param string $field Field to match |
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* @param mixed $value Value to match |
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* |
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* @return integer |
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*/ |
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public function getIndexFromDBFData($field, $value) { |
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$result = -1; |
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$count = count($this->records) - 1; |
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for ($i = 0; $i < $count; $i++) { |
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if (isset($this->records[$i]->DBFData[$field]) && (strtoupper($this->records[$i]->DBFData[$field]) == strtoupper($value))) { |
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$result = $i; |
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} |
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} |
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return $result; |
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} |
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private function _loadDBFHeader() { |
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$DBFFile = fopen($this->_getFilename('.dbf'), 'r'); |
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$result = array(); |
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$i = 1; |
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$inHeader = true; |
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while ($inHeader) { |
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if (!feof($DBFFile)) { |
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$buff32 = fread($DBFFile, 32); |
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if ($i > 1) { |
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if (substr($buff32, 0, 1) == chr(13)) { |
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$inHeader = false; |
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} else { |
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$pos = strpos(substr($buff32, 0, 10), chr(0)); |
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$pos = ($pos == 0 ? 10 : $pos); |
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257
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$fieldName = substr($buff32, 0, $pos); |
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$fieldType = substr($buff32, 11, 1); |
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$fieldLen = ord(substr($buff32, 16, 1)); |
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$fieldDec = ord(substr($buff32, 17, 1)); |
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262
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array_push($result, array($fieldName, $fieldType, $fieldLen, $fieldDec)); |
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} |
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} |
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$i++; |
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} else { |
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$inHeader = false; |
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} |
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} |
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271
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fclose($DBFFile); |
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return($result); |
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} |
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274
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275
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private function _deleteRecordFromDBF($index) { |
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276
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if (@dbase_delete_record($this->DBFFile, $index)) { |
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277
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dbase_pack($this->DBFFile); |
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278
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} |
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279
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} |
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280
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281
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19 |
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private function _loadHeaders() { |
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282
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19 |
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if (Util::loadData('N', $this->readSHP(4)) != 0x270a) { |
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283
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1 |
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$this->setError('Not a SHP file (file code mismatch)'); |
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284
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1 |
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return false; |
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285
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} |
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286
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287
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/* Skip 20 unused bytes */ |
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288
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18 |
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$this->readSHP(20); |
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289
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290
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18 |
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$this->fileLength = Util::loadData('N', $this->readSHP(4)); |
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291
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292
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/* We currently ignore version */ |
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293
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18 |
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$this->readSHP(4); |
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294
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295
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18 |
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$this->shapeType = Util::loadData('V', $this->readSHP(4)); |
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296
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297
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18 |
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$this->boundingBox = array(); |
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298
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18 |
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$this->boundingBox['xmin'] = Util::loadData('d', $this->readSHP(8)); |
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299
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18 |
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$this->boundingBox['ymin'] = Util::loadData('d', $this->readSHP(8)); |
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300
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18 |
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$this->boundingBox['xmax'] = Util::loadData('d', $this->readSHP(8)); |
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301
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18 |
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$this->boundingBox['ymax'] = Util::loadData('d', $this->readSHP(8)); |
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302
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18 |
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$this->boundingBox['zmin'] = Util::loadData('d', $this->readSHP(8)); |
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303
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18 |
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$this->boundingBox['zmax'] = Util::loadData('d', $this->readSHP(8)); |
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304
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18 |
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$this->boundingBox['mmin'] = Util::loadData('d', $this->readSHP(8)); |
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305
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18 |
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$this->boundingBox['mmax'] = Util::loadData('d', $this->readSHP(8)); |
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306
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307
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18 |
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if (ShapeFile::supports_dbase()) { |
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308
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$this->DBFHeader = $this->_loadDBFHeader(); |
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309
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} |
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310
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18 |
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return true; |
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311
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} |
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312
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313
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13 |
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private function _saveHeaders() { |
|
314
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13 |
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fwrite($this->SHPFile, pack('NNNNNN', 9994, 0, 0, 0, 0, 0)); |
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315
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13 |
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fwrite($this->SHPFile, pack('N', $this->fileLength)); |
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316
|
13 |
|
fwrite($this->SHPFile, pack('V', 1000)); |
|
317
|
13 |
|
fwrite($this->SHPFile, pack('V', $this->shapeType)); |
|
318
|
13 |
|
fwrite($this->SHPFile, Util::packDouble($this->boundingBox['xmin'])); |
|
319
|
13 |
|
fwrite($this->SHPFile, Util::packDouble($this->boundingBox['ymin'])); |
|
320
|
13 |
|
fwrite($this->SHPFile, Util::packDouble($this->boundingBox['xmax'])); |
|
321
|
13 |
|
fwrite($this->SHPFile, Util::packDouble($this->boundingBox['ymax'])); |
|
322
|
13 |
|
fwrite($this->SHPFile, Util::packDouble(isset($this->boundingBox['zmin']) ? $this->boundingBox['zmin'] : 0)); |
|
323
|
13 |
|
fwrite($this->SHPFile, Util::packDouble(isset($this->boundingBox['zmax']) ? $this->boundingBox['zmax'] : 0)); |
|
324
|
13 |
|
fwrite($this->SHPFile, Util::packDouble(isset($this->boundingBox['mmin']) ? $this->boundingBox['mmin'] : 0)); |
|
325
|
13 |
|
fwrite($this->SHPFile, Util::packDouble(isset($this->boundingBox['mmax']) ? $this->boundingBox['mmax'] : 0)); |
|
326
|
|
|
|
|
327
|
13 |
|
fwrite($this->SHXFile, pack('NNNNNN', 9994, 0, 0, 0, 0, 0)); |
|
328
|
13 |
|
fwrite($this->SHXFile, pack('N', 50 + 4 * count($this->records))); |
|
329
|
13 |
|
fwrite($this->SHXFile, pack('V', 1000)); |
|
330
|
13 |
|
fwrite($this->SHXFile, pack('V', $this->shapeType)); |
|
331
|
13 |
|
fwrite($this->SHXFile, Util::packDouble($this->boundingBox['xmin'])); |
|
332
|
13 |
|
fwrite($this->SHXFile, Util::packDouble($this->boundingBox['ymin'])); |
|
333
|
13 |
|
fwrite($this->SHXFile, Util::packDouble($this->boundingBox['xmax'])); |
|
334
|
13 |
|
fwrite($this->SHXFile, Util::packDouble($this->boundingBox['ymax'])); |
|
335
|
13 |
|
fwrite($this->SHXFile, Util::packDouble(isset($this->boundingBox['zmin']) ? $this->boundingBox['zmin'] : 0)); |
|
336
|
13 |
|
fwrite($this->SHXFile, Util::packDouble(isset($this->boundingBox['zmax']) ? $this->boundingBox['zmax'] : 0)); |
|
337
|
13 |
|
fwrite($this->SHXFile, Util::packDouble(isset($this->boundingBox['mmin']) ? $this->boundingBox['mmin'] : 0)); |
|
338
|
13 |
|
fwrite($this->SHXFile, Util::packDouble(isset($this->boundingBox['mmax']) ? $this->boundingBox['mmax'] : 0)); |
|
339
|
13 |
|
} |
|
340
|
|
|
|
|
341
|
18 |
|
private function _loadRecords() { |
|
342
|
|
|
/* Need to start at offset 100 */ |
|
343
|
18 |
|
while (!$this->eofSHP()) { |
|
344
|
18 |
|
$record = new ShapeRecord(-1); |
|
345
|
18 |
|
$record->loadFromFile($this, $this->SHPFile, $this->DBFFile); |
|
346
|
18 |
|
if ($record->lastError != '') { |
|
347
|
|
|
$this->setError($record->lastError); |
|
348
|
|
|
return false; |
|
349
|
|
|
} |
|
350
|
18 |
|
if (($record->shapeType === false || $record->shapeType === '') && $this->eofSHP()) { |
|
351
|
18 |
|
break; |
|
352
|
|
|
} |
|
353
|
|
|
|
|
354
|
18 |
|
$this->records[] = $record; |
|
355
|
18 |
|
} |
|
356
|
18 |
|
return true; |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
13 |
|
private function _saveRecords() { |
|
360
|
13 |
|
$do_dbase = ShapeFile::supports_dbase(); |
|
361
|
|
|
|
|
362
|
13 |
|
if ($do_dbase) { |
|
363
|
|
|
$dbf_name = $this->_getFilename('.dbf'); |
|
364
|
|
|
if (file_exists($dbf_name)) { |
|
365
|
|
|
unlink($dbf_name); |
|
366
|
|
|
} |
|
367
|
|
|
$this->DBFFile = $this->_createDBFFile(); |
|
368
|
|
|
if ($this->DBFFile === false) { |
|
369
|
|
|
return false; |
|
370
|
|
|
} |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
13 |
|
$offset = 50; |
|
374
|
13 |
|
if (is_array($this->records) && (count($this->records) > 0)) { |
|
375
|
12 |
|
foreach ($this->records as $index => $record) { |
|
376
|
|
|
//Save the record to the .shp file |
|
377
|
12 |
|
$record->saveToFile($this->SHPFile, $this->DBFFile, $index + 1); |
|
378
|
|
|
|
|
379
|
|
|
//Save the record to the .shx file |
|
380
|
12 |
|
fwrite($this->SHXFile, pack('N', $offset)); |
|
381
|
12 |
|
fwrite($this->SHXFile, pack('N', $record->getContentLength())); |
|
382
|
12 |
|
$offset += (4 + $record->getContentLength()); |
|
383
|
12 |
|
} |
|
384
|
12 |
|
} |
|
385
|
13 |
|
if ($do_dbase) { |
|
386
|
|
|
dbase_pack($this->DBFFile); |
|
387
|
|
|
} |
|
388
|
13 |
|
} |
|
389
|
|
|
|
|
390
|
22 |
|
private function _openFile($toWrite, $extension, $name) { |
|
391
|
22 |
|
$shp_name = $this->_getFilename($extension); |
|
392
|
22 |
|
$result = @fopen($shp_name, ($toWrite ? 'wb+' : 'rb')); |
|
393
|
22 |
|
if (!$result) { |
|
394
|
2 |
|
$this->setError(sprintf('It wasn\'t possible to open the %s file "%s"', $name, $shp_name)); |
|
395
|
2 |
|
return false; |
|
396
|
|
|
} |
|
397
|
|
|
|
|
398
|
20 |
|
return $result; |
|
399
|
|
|
} |
|
400
|
|
|
|
|
401
|
22 |
|
private function _openSHPFile($toWrite = false) { |
|
402
|
22 |
|
$this->SHPFile = $this->_openFile($toWrite, '.shp', 'Shape'); |
|
403
|
22 |
|
if (!$this->SHPFile) { |
|
404
|
2 |
|
return false; |
|
405
|
|
|
} |
|
406
|
20 |
|
return true; |
|
407
|
|
|
} |
|
408
|
|
|
|
|
409
|
20 |
|
private function _closeSHPFile() { |
|
410
|
20 |
|
if ($this->SHPFile) { |
|
411
|
20 |
|
fclose($this->SHPFile); |
|
412
|
20 |
|
$this->SHPFile = null; |
|
413
|
20 |
|
} |
|
414
|
20 |
|
} |
|
415
|
|
|
|
|
416
|
13 |
|
private function _openSHXFile($toWrite = false) { |
|
417
|
13 |
|
$this->SHXFile = $this->_openFile($toWrite, '.shx', 'Index'); |
|
418
|
13 |
|
if (!$this->SHXFile) { |
|
419
|
|
|
return false; |
|
420
|
|
|
} |
|
421
|
13 |
|
return true; |
|
422
|
|
|
} |
|
423
|
|
|
|
|
424
|
13 |
|
private function _closeSHXFile() { |
|
425
|
13 |
|
if ($this->SHXFile) { |
|
426
|
13 |
|
fclose($this->SHXFile); |
|
427
|
13 |
|
$this->SHXFile = null; |
|
428
|
13 |
|
} |
|
429
|
13 |
|
} |
|
430
|
|
|
|
|
431
|
|
|
/** |
|
432
|
|
|
* Creates DBF file |
|
433
|
|
|
* |
|
434
|
|
|
* @return int|false |
|
435
|
|
|
*/ |
|
436
|
|
|
private function _createDBFFile() |
|
437
|
|
|
{ |
|
438
|
|
|
if (count($this->DBFHeader) == 0) { |
|
439
|
|
|
return null; |
|
440
|
|
|
} |
|
441
|
|
|
$dbf_name = $this->_getFilename('.dbf'); |
|
442
|
|
|
$result = @dbase_create($dbf_name, $this->DBFHeader); |
|
443
|
|
|
if ($result === false) { |
|
444
|
|
|
$this->setError(sprintf('It wasn\'t possible to create the DBase file "%s"', $dbf_name)); |
|
445
|
|
|
return false; |
|
446
|
|
|
} |
|
447
|
|
|
return $result; |
|
448
|
|
|
|
|
449
|
|
|
} |
|
450
|
|
|
|
|
451
|
|
|
/** |
|
452
|
|
|
* Loads DBF file if supported |
|
453
|
|
|
* |
|
454
|
|
|
* @return bool |
|
455
|
|
|
*/ |
|
456
|
20 |
|
private function _openDBFFile($toWrite = false) { |
|
457
|
20 |
|
if (!ShapeFile::supports_dbase()) { |
|
458
|
20 |
|
return true; |
|
459
|
|
|
} |
|
460
|
|
|
$dbf_name = $this->_getFilename('.dbf'); |
|
461
|
|
|
$checkFunction = $toWrite ? 'is_writable' : 'is_readable'; |
|
462
|
|
|
if (($toWrite) && (!file_exists($dbf_name))) { |
|
463
|
|
|
if ($this->_createDBFFile() === false) { |
|
464
|
|
|
return false; |
|
465
|
|
|
} |
|
466
|
|
|
} |
|
467
|
|
|
if ($checkFunction($dbf_name)) { |
|
468
|
|
|
$this->DBFFile = @dbase_open($dbf_name, ($toWrite ? 2 : 0)); |
|
469
|
|
|
if (!$this->DBFFile) { |
|
470
|
|
|
$this->setError(sprintf('It wasn\'t possible to open the DBase file "%s"', $dbf_name)); |
|
471
|
|
|
return false; |
|
472
|
|
|
} |
|
473
|
|
|
} else { |
|
474
|
|
|
$this->setError(sprintf('It wasn\'t possible to find the DBase file "%s"', $dbf_name)); |
|
475
|
|
|
return false; |
|
476
|
|
|
} |
|
477
|
|
|
return true; |
|
478
|
|
|
} |
|
479
|
|
|
|
|
480
|
20 |
|
private function _closeDBFFile() { |
|
481
|
20 |
|
if ($this->DBFFile) { |
|
482
|
|
|
dbase_close($this->DBFFile); |
|
483
|
|
|
$this->DBFFile = null; |
|
484
|
|
|
} |
|
485
|
20 |
|
} |
|
486
|
|
|
|
|
487
|
|
|
/** |
|
488
|
|
|
* Sets error message |
|
489
|
|
|
* |
|
490
|
|
|
* @param string $error |
|
491
|
|
|
* |
|
492
|
|
|
* @return void |
|
493
|
|
|
*/ |
|
494
|
3 |
|
public function setError($error) { |
|
495
|
3 |
|
$this->lastError = $error; |
|
496
|
3 |
|
} |
|
497
|
|
|
|
|
498
|
|
|
/** |
|
499
|
|
|
* Reads given number of bytes from SHP file |
|
500
|
|
|
* |
|
501
|
|
|
* @param integer $bytes |
|
502
|
|
|
* |
|
503
|
|
|
* @return string |
|
504
|
|
|
*/ |
|
505
|
19 |
|
public function readSHP($bytes) |
|
506
|
|
|
{ |
|
507
|
19 |
|
return fread($this->SHPFile, $bytes); |
|
508
|
|
|
} |
|
509
|
|
|
|
|
510
|
|
|
/** |
|
511
|
|
|
* Checks whether file is at EOF |
|
512
|
|
|
* |
|
513
|
|
|
* @return bool |
|
514
|
|
|
*/ |
|
515
|
18 |
|
public function eofSHP() |
|
516
|
|
|
{ |
|
517
|
18 |
|
return feof($this->SHPFile); |
|
518
|
|
|
} |
|
519
|
|
|
|
|
520
|
|
|
/** |
|
521
|
|
|
* Returns shape name |
|
522
|
|
|
* |
|
523
|
|
|
* @return string |
|
524
|
|
|
*/ |
|
525
|
1 |
|
public function getShapeName() |
|
526
|
|
|
{ |
|
527
|
1 |
|
return ShapeFile::nameShape($this->shapeType); |
|
528
|
|
|
} |
|
529
|
|
|
|
|
530
|
|
|
/** |
|
531
|
|
|
* Returns shape name |
|
532
|
|
|
* |
|
533
|
|
|
* @param integer $type |
|
534
|
|
|
* |
|
535
|
|
|
* @return string |
|
536
|
|
|
*/ |
|
537
|
1 |
|
public static function nameShape($type) |
|
538
|
|
|
{ |
|
539
|
1 |
|
if (isset(self::$shape_names[$type])) { |
|
540
|
1 |
|
return self::$shape_names[$type]; |
|
541
|
|
|
} |
|
542
|
1 |
|
return sprintf('Shape %d', $type); |
|
543
|
|
|
} |
|
544
|
|
|
|
|
545
|
|
|
/** |
|
546
|
|
|
* Check whether file contains measure data. |
|
547
|
|
|
* |
|
548
|
|
|
* For some reason this is distinguished by zero bouding box in the |
|
549
|
|
|
* specification. |
|
550
|
|
|
* |
|
551
|
|
|
* @return bool |
|
552
|
|
|
*/ |
|
553
|
8 |
|
public function hasMeasure() |
|
554
|
|
|
{ |
|
555
|
8 |
|
return $this->boundingBox['mmin'] != 0 || $this->boundingBox['mmax'] != 0; |
|
556
|
|
|
} |
|
557
|
|
|
} |
|
558
|
|
|
|
|
559
|
|
|
|
phpmyadmin /
shapefile
