914 lines
46 KiB
PHP
Executable File
914 lines
46 KiB
PHP
Executable File
<?php
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/**
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* PHPExcel_ReferenceHelper (Singleton)
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*
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* Copyright (c) 2006 - 2015 PHPExcel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* @category PHPExcel
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* @package PHPExcel
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* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
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* @version ##VERSION##, ##DATE##
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*/
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class PHPExcel_ReferenceHelper
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{
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/** Constants */
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/** Regular Expressions */
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const REFHELPER_REGEXP_CELLREF = '((\w*|\'[^!]*\')!)?(?<![:a-z\$])(\$?[a-z]{1,3}\$?\d+)(?=[^:!\d\'])';
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const REFHELPER_REGEXP_CELLRANGE = '((\w*|\'[^!]*\')!)?(\$?[a-z]{1,3}\$?\d+):(\$?[a-z]{1,3}\$?\d+)';
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const REFHELPER_REGEXP_ROWRANGE = '((\w*|\'[^!]*\')!)?(\$?\d+):(\$?\d+)';
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const REFHELPER_REGEXP_COLRANGE = '((\w*|\'[^!]*\')!)?(\$?[a-z]{1,3}):(\$?[a-z]{1,3})';
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/**
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* Instance of this class
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*
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* @var PHPExcel_ReferenceHelper
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*/
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private static $instance;
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/**
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* Get an instance of this class
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*
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* @return PHPExcel_ReferenceHelper
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*/
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public static function getInstance()
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{
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if (!isset(self::$instance) || (self::$instance === null)) {
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self::$instance = new PHPExcel_ReferenceHelper();
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}
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return self::$instance;
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}
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/**
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* Create a new PHPExcel_ReferenceHelper
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*/
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protected function __construct()
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{
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}
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/**
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* Compare two column addresses
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* Intended for use as a Callback function for sorting column addresses by column
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*
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* @param string $a First column to test (e.g. 'AA')
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* @param string $b Second column to test (e.g. 'Z')
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* @return integer
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*/
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public static function columnSort($a, $b)
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{
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return strcasecmp(strlen($a) . $a, strlen($b) . $b);
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}
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/**
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* Compare two column addresses
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* Intended for use as a Callback function for reverse sorting column addresses by column
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*
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* @param string $a First column to test (e.g. 'AA')
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* @param string $b Second column to test (e.g. 'Z')
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* @return integer
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*/
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public static function columnReverseSort($a, $b)
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{
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return 1 - strcasecmp(strlen($a) . $a, strlen($b) . $b);
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}
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/**
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* Compare two cell addresses
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* Intended for use as a Callback function for sorting cell addresses by column and row
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*
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* @param string $a First cell to test (e.g. 'AA1')
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* @param string $b Second cell to test (e.g. 'Z1')
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* @return integer
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