mirror of
https://github.com/YunoHost-Apps/phpmyadmin_ynh.git
synced 2024-09-03 19:56:46 +02:00
102 lines
2.8 KiB
PHP
102 lines
2.8 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* This class extends ShapeFile class to cater the following phpMyAdmin
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* specific requirements.
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*
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* @package PhpMyAdmin-Import
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* @subpackage ESRI_Shape
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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/**
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* 1) To load data from .dbf file only when the dBase extension is available.
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* 2) To use PMA_importGetNextChunk() functionality to read data, rather than
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* reading directly from a file. Using ImportShp::readFromBuffer() in place
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* of fread(). This makes it possible to use compressions.
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*
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* @package PhpMyAdmin-Import
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* @subpackage ESRI_Shape
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*/
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class PMA_ShapeFile extends ShapeFile
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{
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/**
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* Returns whether the 'dbase' extension is loaded
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*
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* @return boolean whether the 'dbase' extension is loaded
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*/
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function _isDbaseLoaded()
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{
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return extension_loaded('dbase');
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}
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/**
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* Loads ESRI shape data from the imported file
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*
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* @param string $FileName not used, it's here only to match the method
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* signature of the method being overidden
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*
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* @return void
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* @see ShapeFile::loadFromFile()
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*/
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function loadFromFile($FileName)
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{
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$this->_loadHeaders();
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$this->_loadRecords();
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if ($this->_isDbaseLoaded()) {
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$this->_closeDBFFile();
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}
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}
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/**
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* Loads metadata from the ESRI shape file header
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*
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* @return void
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* @see ShapeFile::_loadHeaders()
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*/
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function _loadHeaders()
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{
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ImportShp::readFromBuffer(24);
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$this->fileLength = loadData("N", ImportShp::readFromBuffer(4));
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ImportShp::readFromBuffer(4);
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$this->shapeType = loadData("V", ImportShp::readFromBuffer(4));
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$this->boundingBox = array();
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$this->boundingBox["xmin"] = loadData("d", ImportShp::readFromBuffer(8));
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$this->boundingBox["ymin"] = loadData("d", ImportShp::readFromBuffer(8));
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$this->boundingBox["xmax"] = loadData("d", ImportShp::readFromBuffer(8));
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$this->boundingBox["ymax"] = loadData("d", ImportShp::readFromBuffer(8));
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if ($this->_isDbaseLoaded() && $this->_openDBFFile()) {
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$this->DBFHeader = $this->_loadDBFHeader();
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}
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}
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/**
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* Loads geometry data from the ESRI shape file
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*
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* @return boolean|void
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* @see ShapeFile::_loadRecords()
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*/
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function _loadRecords()
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{
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global $eof;
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ImportShp::readFromBuffer(32);
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while (true) {
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$record = new PMA_ShapeRecord(-1);
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$record->loadFromFile($this->SHPFile, $this->DBFFile);
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if ($record->lastError != "") {
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return false;
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}
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if ($eof) {
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break;
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}
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$this->records[] = $record;
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}
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}
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}
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?>
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