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<?php |
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|
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namespace PhpOffice\PhpSpreadsheet\Writer\Xls; |
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|
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use PhpOffice\PhpSpreadsheet\Shared\StringHelper; |
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use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet as PhpspreadsheetWorksheet; |
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use PhpOffice\PhpSpreadsheet\Writer\Exception as WriterException; |
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|
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// Original file header of PEAR::Spreadsheet_Excel_Writer_Parser (used as the base for this class): |
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// ----------------------------------------------------------------------------------------- |
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// * Class for parsing Excel formulas |
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// * |
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// * License Information: |
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// * |
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// * Spreadsheet_Excel_Writer: A library for generating Excel Spreadsheets |
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// * Copyright (c) 2002-2003 Xavier Noguer xnoguer@rezebra.com |
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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// */ |
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class Parser |
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{ |
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/** Constants */ |
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// Sheet title in unquoted form |
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// Invalid sheet title characters cannot occur in the sheet title: |
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// *:/\?[] |
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// Moreover, there are valid sheet title characters that cannot occur in unquoted form (there may be more?) |
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// +-% '^&<>=,;#()"{} |
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const REGEX_SHEET_TITLE_UNQUOTED = '[^\*\:\/\\\\\?\[\]\+\-\% \\\'\^\&\<\>\=\,\;\#\(\)\"\{\}]+'; |
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|
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// Sheet title in quoted form (without surrounding quotes) |
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// Invalid sheet title characters cannot occur in the sheet title: |
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// *:/\?[] (usual invalid sheet title characters) |
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// Single quote is represented as a pair '' |
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const REGEX_SHEET_TITLE_QUOTED = '(([^\*\:\/\\\\\?\[\]\\\'])+|(\\\'\\\')+)+'; |
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|
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/** |
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* The index of the character we are currently looking at. |
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* |
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* @var int |
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*/ |
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public $currentCharacter; |
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|
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/** |
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* The token we are working on. |
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* |
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* @var string |
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*/ |
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public $currentToken; |
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|
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/** |
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* The formula to parse. |
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* |
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* @var string |
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*/ |
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private $formula; |
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|
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/** |
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* The character ahead of the current char. |
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* |
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* @var string |
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*/ |
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public $lookAhead; |
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|
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/** |
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* The parse tree to be generated. |
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* |
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* @var string |
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*/ |
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private $parseTree; |
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|
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/** |
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* Array of external sheets. |
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* |
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* @var array |
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*/ |
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private $externalSheets; |
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|
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/** |
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* Array of sheet references in the form of REF structures. |
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* |
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* @var array |
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*/ |
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public $references; |
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|
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/** |
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* The Excel ptg indices. |
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* |
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* @var array |
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*/ |
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private $ptg = [ |
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'ptgExp' => 0x01, |
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'ptgTbl' => 0x02, |
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'ptgAdd' => 0x03, |
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'ptgSub' => 0x04, |
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'ptgMul' => 0x05, |
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'ptgDiv' => 0x06, |
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'ptgPower' => 0x07, |
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'ptgConcat' => 0x08, |
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'ptgLT' => 0x09, |
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'ptgLE' => 0x0A, |
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'ptgEQ' => 0x0B, |
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'ptgGE' => 0x0C, |
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'ptgGT' => 0x0D, |
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'ptgNE' => 0x0E, |
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'ptgIsect' => 0x0F, |
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'ptgUnion' => 0x10, |
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'ptgRange' => 0x11, |
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'ptgUplus' => 0x12, |
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'ptgUminus' => 0x13, |
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'ptgPercent' => 0x14, |
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'ptgParen' => 0x15, |
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'ptgMissArg' => 0x16, |
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'ptgStr' => 0x17, |
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'ptgAttr' => 0x19, |
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'ptgSheet' => 0x1A, |
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'ptgEndSheet' => 0x1B, |
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'ptgErr' => 0x1C, |
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'ptgBool' => 0x1D, |
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'ptgInt' => 0x1E, |
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'ptgNum' => 0x1F, |
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'ptgArray' => 0x20, |
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'ptgFunc' => 0x21, |
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'ptgFuncVar' => 0x22, |
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'ptgName' => 0x23, |
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'ptgRef' => 0x24, |
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'ptgArea' => 0x25, |
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'ptgMemArea' => 0x26, |
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'ptgMemErr' => 0x27, |
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'ptgMemNoMem' => 0x28, |
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'ptgMemFunc' => 0x29, |
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'ptgRefErr' => 0x2A, |
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'ptgAreaErr' => 0x2B, |
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'ptgRefN' => 0x2C, |
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'ptgAreaN' => 0x2D, |
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'ptgMemAreaN' => 0x2E, |
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'ptgMemNoMemN' => 0x2F, |
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'ptgNameX' => 0x39, |
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'ptgRef3d' => 0x3A, |
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'ptgArea3d' => 0x3B, |
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'ptgRefErr3d' => 0x3C, |
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'ptgAreaErr3d' => 0x3D, |
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'ptgArrayV' => 0x40, |
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'ptgFuncV' => 0x41, |
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'ptgFuncVarV' => 0x42, |
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'ptgNameV' => 0x43, |
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'ptgRefV' => 0x44, |
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'ptgAreaV' => 0x45, |
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'ptgMemAreaV' => 0x46, |
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'ptgMemErrV' => 0x47, |
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'ptgMemNoMemV' => 0x48, |
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'ptgMemFuncV' => 0x49, |
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'ptgRefErrV' => 0x4A, |
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'ptgAreaErrV' => 0x4B, |
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'ptgRefNV' => 0x4C, |
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'ptgAreaNV' => 0x4D, |
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'ptgMemAreaNV' => 0x4E, |
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'ptgMemNoMemNV' => 0x4F, |
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'ptgFuncCEV' => 0x58, |
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'ptgNameXV' => 0x59, |
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'ptgRef3dV' => 0x5A, |
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'ptgArea3dV' => 0x5B, |
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'ptgRefErr3dV' => 0x5C, |
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'ptgAreaErr3dV' => 0x5D, |
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'ptgArrayA' => 0x60, |
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'ptgFuncA' => 0x61, |
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'ptgFuncVarA' => 0x62, |
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'ptgNameA' => 0x63, |
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'ptgRefA' => 0x64, |
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'ptgAreaA' => 0x65, |
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'ptgMemAreaA' => 0x66, |
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'ptgMemErrA' => 0x67, |
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'ptgMemNoMemA' => 0x68, |
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'ptgMemFuncA' => 0x69, |
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'ptgRefErrA' => 0x6A, |
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'ptgAreaErrA' => 0x6B, |
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'ptgRefNA' => 0x6C, |
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'ptgAreaNA' => 0x6D, |
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'ptgMemAreaNA' => 0x6E, |
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'ptgMemNoMemNA' => 0x6F, |
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'ptgFuncCEA' => 0x78, |
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'ptgNameXA' => 0x79, |
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'ptgRef3dA' => 0x7A, |
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'ptgArea3dA' => 0x7B, |
| 196 |
'ptgRefErr3dA' => 0x7C, |
| 197 |
'ptgAreaErr3dA' => 0x7D, |
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]; |
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|
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/** |
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* Thanks to Michael Meeks and Gnumeric for the initial arg values. |
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* |
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* The following hash was generated by "function_locale.pl" in the distro. |
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* Refer to function_locale.pl for non-English function names. |
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* |
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* The array elements are as follow: |
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* ptg: The Excel function ptg code. |
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* args: The number of arguments that the function takes: |
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* >=0 is a fixed number of arguments. |
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* -1 is a variable number of arguments. |
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* class: The reference, value or array class of the function args. |
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* vol: The function is volatile. |
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* |
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* @var array |
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*/ |
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private $functions = [ |
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// function ptg args class vol |
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'COUNT' => [0, -1, 0, 0], |
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'IF' => [1, -1, 1, 0], |
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'ISNA' => [2, 1, 1, 0], |
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'ISERROR' => [3, 1, 1, 0], |
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'SUM' => [4, -1, 0, 0], |
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'AVERAGE' => [5, -1, 0, 0], |
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'MIN' => [6, -1, 0, 0], |
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'MAX' => [7, -1, 0, 0], |
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'ROW' => [8, -1, 0, 0], |
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'COLUMN' => [9, -1, 0, 0], |
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'NA' => [10, 0, 0, 0], |
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'NPV' => [11, -1, 1, 0], |
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'STDEV' => [12, -1, 0, 0], |
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'DOLLAR' => [13, -1, 1, 0], |
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'FIXED' => [14, -1, 1, 0], |
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'SIN' => [15, 1, 1, 0], |
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'COS' => [16, 1, 1, 0], |
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'TAN' => [17, 1, 1, 0], |
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'ATAN' => [18, 1, 1, 0], |
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'PI' => [19, 0, 1, 0], |
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'SQRT' => [20, 1, 1, 0], |
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'EXP' => [21, 1, 1, 0], |
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'LN' => [22, 1, 1, 0], |
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'LOG10' => [23, 1, 1, 0], |
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'ABS' => [24, 1, 1, 0], |
| 243 |
'INT' => [25, 1, 1, 0], |
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'SIGN' => [26, 1, 1, 0], |
| 245 |
'ROUND' => [27, 2, 1, 0], |
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'LOOKUP' => [28, -1, 0, 0], |
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'INDEX' => [29, -1, 0, 1], |
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'REPT' => [30, 2, 1, 0], |
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'MID' => [31, 3, 1, 0], |
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'LEN' => [32, 1, 1, 0], |
| 251 |
'VALUE' => [33, 1, 1, 0], |
| 252 |
'TRUE' => [34, 0, 1, 0], |
| 253 |
'FALSE' => [35, 0, 1, 0], |
| 254 |
'AND' => [36, -1, 0, 0], |
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'OR' => [37, -1, 0, 0], |
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'NOT' => [38, 1, 1, 0], |
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'MOD' => [39, 2, 1, 0], |
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'DCOUNT' => [40, 3, 0, 0], |
| 259 |
'DSUM' => [41, 3, 0, 0], |
| 260 |
'DAVERAGE' => [42, 3, 0, 0], |
| 261 |
'DMIN' => [43, 3, 0, 0], |
| 262 |
'DMAX' => [44, 3, 0, 0], |
| 263 |
'DSTDEV' => [45, 3, 0, 0], |
| 264 |
'VAR' => [46, -1, 0, 0], |
| 265 |
'DVAR' => [47, 3, 0, 0], |
| 266 |
'TEXT' => [48, 2, 1, 0], |
| 267 |
'LINEST' => [49, -1, 0, 0], |
| 268 |
'TREND' => [50, -1, 0, 0], |
| 269 |
'LOGEST' => [51, -1, 0, 0], |
| 270 |
'GROWTH' => [52, -1, 0, 0], |
| 271 |
'PV' => [56, -1, 1, 0], |
| 272 |
'FV' => [57, -1, 1, 0], |
| 273 |
'NPER' => [58, -1, 1, 0], |
| 274 |
'PMT' => [59, -1, 1, 0], |
| 275 |
'RATE' => [60, -1, 1, 0], |
| 276 |
'MIRR' => [61, 3, 0, 0], |
| 277 |
'IRR' => [62, -1, 0, 0], |
| 278 |
'RAND' => [63, 0, 1, 1], |
| 279 |
'MATCH' => [64, -1, 0, 0], |
| 280 |
'DATE' => [65, 3, 1, 0], |
| 281 |
'TIME' => [66, 3, 1, 0], |
| 282 |
'DAY' => [67, 1, 1, 0], |
| 283 |
'MONTH' => [68, 1, 1, 0], |
| 284 |
'YEAR' => [69, 1, 1, 0], |
| 285 |
'WEEKDAY' => [70, -1, 1, 0], |
| 286 |
'HOUR' => [71, 1, 1, 0], |
| 287 |
'MINUTE' => [72, 1, 1, 0], |
| 288 |
'SECOND' => [73, 1, 1, 0], |
| 289 |
'NOW' => [74, 0, 1, 1], |
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'AREAS' => [75, 1, 0, 1], |
| 291 |
'ROWS' => [76, 1, 0, 1], |
| 292 |
'COLUMNS' => [77, 1, 0, 1], |
| 293 |
'OFFSET' => [78, -1, 0, 1], |
| 294 |
'SEARCH' => [82, -1, 1, 0], |
| 295 |
'TRANSPOSE' => [83, 1, 1, 0], |
| 296 |
'TYPE' => [86, 1, 1, 0], |
| 297 |
'ATAN2' => [97, 2, 1, 0], |
| 298 |
'ASIN' => [98, 1, 1, 0], |
| 299 |
'ACOS' => [99, 1, 1, 0], |
| 300 |
'CHOOSE' => [100, -1, 1, 0], |
| 301 |
'HLOOKUP' => [101, -1, 0, 0], |
| 302 |
'VLOOKUP' => [102, -1, 0, 0], |
| 303 |
'ISREF' => [105, 1, 0, 0], |
| 304 |
'LOG' => [109, -1, 1, 0], |
| 305 |
'CHAR' => [111, 1, 1, 0], |
| 306 |
'LOWER' => [112, 1, 1, 0], |
| 307 |
'UPPER' => [113, 1, 1, 0], |
| 308 |
'PROPER' => [114, 1, 1, 0], |
| 309 |
'LEFT' => [115, -1, 1, 0], |
| 310 |
'RIGHT' => [116, -1, 1, 0], |
| 311 |
'EXACT' => [117, 2, 1, 0], |
| 312 |
'TRIM' => [118, 1, 1, 0], |
| 313 |
'REPLACE' => [119, 4, 1, 0], |
| 314 |
'SUBSTITUTE' => [120, -1, 1, 0], |
| 315 |
'CODE' => [121, 1, 1, 0], |
| 316 |
'FIND' => [124, -1, 1, 0], |
| 317 |
'CELL' => [125, -1, 0, 1], |
| 318 |
'ISERR' => [126, 1, 1, 0], |
| 319 |
'ISTEXT' => [127, 1, 1, 0], |
| 320 |
'ISNUMBER' => [128, 1, 1, 0], |
| 321 |
'ISBLANK' => [129, 1, 1, 0], |
| 322 |
'T' => [130, 1, 0, 0], |
| 323 |
'N' => [131, 1, 0, 0], |
| 324 |
'DATEVALUE' => [140, 1, 1, 0], |
| 325 |
'TIMEVALUE' => [141, 1, 1, 0], |
| 326 |
'SLN' => [142, 3, 1, 0], |
| 327 |
'SYD' => [143, 4, 1, 0], |
| 328 |
'DDB' => [144, -1, 1, 0], |
| 329 |
'INDIRECT' => [148, -1, 1, 1], |
| 330 |
'CALL' => [150, -1, 1, 0], |
| 331 |
'CLEAN' => [162, 1, 1, 0], |
| 332 |
'MDETERM' => [163, 1, 2, 0], |
| 333 |
'MINVERSE' => [164, 1, 2, 0], |
| 334 |
'MMULT' => [165, 2, 2, 0], |
| 335 |
'IPMT' => [167, -1, 1, 0], |
| 336 |
'PPMT' => [168, -1, 1, 0], |
| 337 |
'COUNTA' => [169, -1, 0, 0], |
| 338 |
'PRODUCT' => [183, -1, 0, 0], |
| 339 |
'FACT' => [184, 1, 1, 0], |
| 340 |
'DPRODUCT' => [189, 3, 0, 0], |
| 341 |
'ISNONTEXT' => [190, 1, 1, 0], |
| 342 |
'STDEVP' => [193, -1, 0, 0], |
| 343 |
'VARP' => [194, -1, 0, 0], |
| 344 |
'DSTDEVP' => [195, 3, 0, 0], |
| 345 |
'DVARP' => [196, 3, 0, 0], |
| 346 |
'TRUNC' => [197, -1, 1, 0], |
| 347 |
'ISLOGICAL' => [198, 1, 1, 0], |
| 348 |
'DCOUNTA' => [199, 3, 0, 0], |
| 349 |
'USDOLLAR' => [204, -1, 1, 0], |
| 350 |
'FINDB' => [205, -1, 1, 0], |
| 351 |
'SEARCHB' => [206, -1, 1, 0], |
| 352 |
'REPLACEB' => [207, 4, 1, 0], |
| 353 |
'LEFTB' => [208, -1, 1, 0], |
| 354 |
'RIGHTB' => [209, -1, 1, 0], |
| 355 |
'MIDB' => [210, 3, 1, 0], |
| 356 |
'LENB' => [211, 1, 1, 0], |
| 357 |
'ROUNDUP' => [212, 2, 1, 0], |
| 358 |
'ROUNDDOWN' => [213, 2, 1, 0], |
| 359 |
'ASC' => [214, 1, 1, 0], |
| 360 |
'DBCS' => [215, 1, 1, 0], |
| 361 |
'RANK' => [216, -1, 0, 0], |
| 362 |
'ADDRESS' => [219, -1, 1, 0], |
| 363 |
'DAYS360' => [220, -1, 1, 0], |
| 364 |
'TODAY' => [221, 0, 1, 1], |
| 365 |
'VDB' => [222, -1, 1, 0], |
| 366 |
'MEDIAN' => [227, -1, 0, 0], |
| 367 |
'SUMPRODUCT' => [228, -1, 2, 0], |
| 368 |
'SINH' => [229, 1, 1, 0], |
| 369 |
'COSH' => [230, 1, 1, 0], |
| 370 |
'TANH' => [231, 1, 1, 0], |
| 371 |
'ASINH' => [232, 1, 1, 0], |
| 372 |
'ACOSH' => [233, 1, 1, 0], |
| 373 |
'ATANH' => [234, 1, 1, 0], |
| 374 |
'DGET' => [235, 3, 0, 0], |
| 375 |
'INFO' => [244, 1, 1, 1], |
| 376 |
'DB' => [247, -1, 1, 0], |
| 377 |
'FREQUENCY' => [252, 2, 0, 0], |
| 378 |
'ERROR.TYPE' => [261, 1, 1, 0], |
| 379 |
'REGISTER.ID' => [267, -1, 1, 0], |
| 380 |
'AVEDEV' => [269, -1, 0, 0], |
| 381 |
'BETADIST' => [270, -1, 1, 0], |
| 382 |
'GAMMALN' => [271, 1, 1, 0], |
| 383 |
'BETAINV' => [272, -1, 1, 0], |
| 384 |
'BINOMDIST' => [273, 4, 1, 0], |
| 385 |
'CHIDIST' => [274, 2, 1, 0], |
| 386 |
'CHIINV' => [275, 2, 1, 0], |
| 387 |
'COMBIN' => [276, 2, 1, 0], |
| 388 |
'CONFIDENCE' => [277, 3, 1, 0], |
| 389 |
'CRITBINOM' => [278, 3, 1, 0], |
| 390 |
'EVEN' => [279, 1, 1, 0], |
| 391 |
'EXPONDIST' => [280, 3, 1, 0], |
| 392 |
'FDIST' => [281, 3, 1, 0], |
| 393 |
'FINV' => [282, 3, 1, 0], |
| 394 |
'FISHER' => [283, 1, 1, 0], |
| 395 |
'FISHERINV' => [284, 1, 1, 0], |
| 396 |
'FLOOR' => [285, 2, 1, 0], |
| 397 |
'GAMMADIST' => [286, 4, 1, 0], |
| 398 |
'GAMMAINV' => [287, 3, 1, 0], |
| 399 |
'CEILING' => [288, 2, 1, 0], |
| 400 |
'HYPGEOMDIST' => [289, 4, 1, 0], |
| 401 |
'LOGNORMDIST' => [290, 3, 1, 0], |
| 402 |
'LOGINV' => [291, 3, 1, 0], |
| 403 |
'NEGBINOMDIST' => [292, 3, 1, 0], |
| 404 |
'NORMDIST' => [293, 4, 1, 0], |
| 405 |
'NORMSDIST' => [294, 1, 1, 0], |
| 406 |
'NORMINV' => [295, 3, 1, 0], |
| 407 |
'NORMSINV' => [296, 1, 1, 0], |
| 408 |
'STANDARDIZE' => [297, 3, 1, 0], |
| 409 |
'ODD' => [298, 1, 1, 0], |
| 410 |
'PERMUT' => [299, 2, 1, 0], |
| 411 |
'POISSON' => [300, 3, 1, 0], |
| 412 |
'TDIST' => [301, 3, 1, 0], |
| 413 |
'WEIBULL' => [302, 4, 1, 0], |
| 414 |
'SUMXMY2' => [303, 2, 2, 0], |
| 415 |
'SUMX2MY2' => [304, 2, 2, 0], |
| 416 |
'SUMX2PY2' => [305, 2, 2, 0], |
| 417 |
'CHITEST' => [306, 2, 2, 0], |
| 418 |
'CORREL' => [307, 2, 2, 0], |
| 419 |
'COVAR' => [308, 2, 2, 0], |
| 420 |
'FORECAST' => [309, 3, 2, 0], |
| 421 |
'FTEST' => [310, 2, 2, 0], |
| 422 |
'INTERCEPT' => [311, 2, 2, 0], |
| 423 |
'PEARSON' => [312, 2, 2, 0], |
| 424 |
'RSQ' => [313, 2, 2, 0], |
| 425 |
'STEYX' => [314, 2, 2, 0], |
| 426 |
'SLOPE' => [315, 2, 2, 0], |
| 427 |
'TTEST' => [316, 4, 2, 0], |
| 428 |
'PROB' => [317, -1, 2, 0], |
| 429 |
'DEVSQ' => [318, -1, 0, 0], |
| 430 |
'GEOMEAN' => [319, -1, 0, 0], |
| 431 |
'HARMEAN' => [320, -1, 0, 0], |
| 432 |
'SUMSQ' => [321, -1, 0, 0], |
| 433 |
'KURT' => [322, -1, 0, 0], |
| 434 |
'SKEW' => [323, -1, 0, 0], |
| 435 |
'ZTEST' => [324, -1, 0, 0], |
| 436 |
'LARGE' => [325, 2, 0, 0], |
| 437 |
'SMALL' => [326, 2, 0, 0], |
| 438 |
'QUARTILE' => [327, 2, 0, 0], |
| 439 |
'PERCENTILE' => [328, 2, 0, 0], |
| 440 |
'PERCENTRANK' => [329, -1, 0, 0], |
| 441 |
'MODE' => [330, -1, 2, 0], |
| 442 |
'TRIMMEAN' => [331, 2, 0, 0], |
| 443 |
'TINV' => [332, 2, 1, 0], |
| 444 |
'CONCATENATE' => [336, -1, 1, 0], |
| 445 |
'POWER' => [337, 2, 1, 0], |
| 446 |
'RADIANS' => [342, 1, 1, 0], |
| 447 |
'DEGREES' => [343, 1, 1, 0], |
| 448 |
'SUBTOTAL' => [344, -1, 0, 0], |
| 449 |
'SUMIF' => [345, -1, 0, 0], |
| 450 |
'COUNTIF' => [346, 2, 0, 0], |
| 451 |
'COUNTBLANK' => [347, 1, 0, 0], |
| 452 |
'ISPMT' => [350, 4, 1, 0], |
| 453 |
'DATEDIF' => [351, 3, 1, 0], |
| 454 |
'DATESTRING' => [352, 1, 1, 0], |
| 455 |
'NUMBERSTRING' => [353, 2, 1, 0], |
| 456 |
'ROMAN' => [354, -1, 1, 0], |
| 457 |
'GETPIVOTDATA' => [358, -1, 0, 0], |
| 458 |
'HYPERLINK' => [359, -1, 1, 0], |
| 459 |
'PHONETIC' => [360, 1, 0, 0], |
| 460 |
'AVERAGEA' => [361, -1, 0, 0], |
| 461 |
'MAXA' => [362, -1, 0, 0], |
| 462 |
'MINA' => [363, -1, 0, 0], |
| 463 |
'STDEVPA' => [364, -1, 0, 0], |
| 464 |
'VARPA' => [365, -1, 0, 0], |
| 465 |
'STDEVA' => [366, -1, 0, 0], |
| 466 |
'VARA' => [367, -1, 0, 0], |
| 467 |
'BAHTTEXT' => [368, 1, 0, 0], |
| 468 |
]; |
| 469 |
|
| 470 |
/** |
| 471 |
* The class constructor. |
| 472 |
*/ |
| 473 |
public function __construct() |
| 474 |
{ |
| 475 |
$this->currentCharacter = 0; |
| 476 |
$this->currentToken = ''; // The token we are working on. |
| 477 |
$this->formula = ''; // The formula to parse. |
| 478 |
$this->lookAhead = ''; // The character ahead of the current char. |
| 479 |
$this->parseTree = ''; // The parse tree to be generated. |
| 480 |
$this->externalSheets = []; |
| 481 |
$this->references = []; |
| 482 |
} |
| 483 |
|
| 484 |
/** |
| 485 |
* Convert a token to the proper ptg value. |
| 486 |
* |
| 487 |
* @param mixed $token the token to convert |
| 488 |
* |
| 489 |
* @return mixed the converted token on success |
| 490 |
*/ |
| 491 |
private function convert($token) |
| 492 |
{ |
| 493 |
if (preg_match('/"([^"]|""){0,255}"/', $token)) { |
| 494 |
return $this->convertString($token); |
| 495 |
} elseif (is_numeric($token)) { |
| 496 |
return $this->convertNumber($token); |
| 497 |
// match references like A1 or $A$1 |
| 498 |
} elseif (preg_match('/^\$?([A-Ia-i]?[A-Za-z])\$?(\d+)$/', $token)) { |
| 499 |
return $this->convertRef2d($token); |
| 500 |
// match external references like Sheet1!A1 or Sheet1:Sheet2!A1 or Sheet1!$A$1 or Sheet1:Sheet2!$A$1 |
| 501 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?[A-Ia-i]?[A-Za-z]\$?(\\d+)$/u', $token)) { |
| 502 |
return $this->convertRef3d($token); |
| 503 |
// match external references like 'Sheet1'!A1 or 'Sheet1:Sheet2'!A1 or 'Sheet1'!$A$1 or 'Sheet1:Sheet2'!$A$1 |
| 504 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?[A-Ia-i]?[A-Za-z]\\$?(\\d+)$/u", $token)) { |
| 505 |
return $this->convertRef3d($token); |
| 506 |
// match ranges like A1:B2 or $A$1:$B$2 |
| 507 |
} elseif (preg_match('/^(\$)?[A-Ia-i]?[A-Za-z](\$)?(\d+)\:(\$)?[A-Ia-i]?[A-Za-z](\$)?(\d+)$/', $token)) { |
| 508 |
return $this->convertRange2d($token); |
| 509 |
// match external ranges like Sheet1!A1:B2 or Sheet1:Sheet2!A1:B2 or Sheet1!$A$1:$B$2 or Sheet1:Sheet2!$A$1:$B$2 |
| 510 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?([A-Ia-i]?[A-Za-z])?\$?(\\d+)\\:\$?([A-Ia-i]?[A-Za-z])?\$?(\\d+)$/u', $token)) { |
| 511 |
return $this->convertRange3d($token); |
| 512 |
// match external ranges like 'Sheet1'!A1:B2 or 'Sheet1:Sheet2'!A1:B2 or 'Sheet1'!$A$1:$B$2 or 'Sheet1:Sheet2'!$A$1:$B$2 |
| 513 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?([A-Ia-i]?[A-Za-z])?\\$?(\\d+)\\:\\$?([A-Ia-i]?[A-Za-z])?\\$?(\\d+)$/u", $token)) { |
| 514 |
return $this->convertRange3d($token); |
| 515 |
// operators (including parentheses) |
| 516 |
} elseif (isset($this->ptg[$token])) { |
| 517 |
return pack('C', $this->ptg[$token]); |
| 518 |
// match error codes |
| 519 |
} elseif (preg_match('/^#[A-Z0\\/]{3,5}[!?]{1}$/', $token) or $token == '#N/A') { |
| 520 |
return $this->convertError($token); |
| 521 |
// commented so argument number can be processed correctly. See toReversePolish(). |
| 522 |
/*elseif (preg_match("/[A-Z0-9\xc0-\xdc\.]+/", $token)) |
| 523 |
{ |
| 524 |
return($this->convertFunction($token, $this->_func_args)); |
| 525 |
}*/ |
| 526 |
// if it's an argument, ignore the token (the argument remains) |
| 527 |
} elseif ($token == 'arg') { |
| 528 |
return ''; |
| 529 |
} |
| 530 |
|
| 531 |
// TODO: use real error codes |
| 532 |
throw new WriterException("Unknown token $token"); |
| 533 |
} |
| 534 |
|
| 535 |
/** |
| 536 |
* Convert a number token to ptgInt or ptgNum. |
| 537 |
* |
| 538 |
* @param mixed $num an integer or double for conversion to its ptg value |
| 539 |
* |
| 540 |
* @return string |
| 541 |
*/ |
| 542 |
private function convertNumber($num) |
| 543 |
{ |
| 544 |
// Integer in the range 0..2**16-1 |
| 545 |
if ((preg_match('/^\\d+$/', $num)) and ($num <= 65535)) { |
| 546 |
return pack('Cv', $this->ptg['ptgInt'], $num); |
| 547 |
} |
| 548 |
|
| 549 |
// A float |
| 550 |
if (BIFFwriter::getByteOrder()) { // if it's Big Endian |
| 551 |
$num = strrev($num); |
| 552 |
} |
| 553 |
|
| 554 |
return pack('Cd', $this->ptg['ptgNum'], $num); |
| 555 |
} |
| 556 |
|
| 557 |
/** |
| 558 |
* Convert a string token to ptgStr. |
| 559 |
* |
| 560 |
* @param string $string a string for conversion to its ptg value |
| 561 |
* |
| 562 |
* @return mixed the converted token on success |
| 563 |
*/ |
| 564 |
private function convertString($string) |
| 565 |
{ |
| 566 |
// chop away beggining and ending quotes |
| 567 |
$string = substr($string, 1, -1); |
| 568 |
if (strlen($string) > 255) { |
| 569 |
throw new WriterException('String is too long'); |
| 570 |
} |
| 571 |
|
| 572 |
return pack('C', $this->ptg['ptgStr']) . StringHelper::UTF8toBIFF8UnicodeShort($string); |
| 573 |
} |
| 574 |
|
| 575 |
/** |
| 576 |
* Convert a function to a ptgFunc or ptgFuncVarV depending on the number of |
| 577 |
* args that it takes. |
| 578 |
* |
| 579 |
* @param string $token the name of the function for convertion to ptg value |
| 580 |
* @param int $num_args the number of arguments the function receives |
| 581 |
* |
| 582 |
* @return string The packed ptg for the function |
| 583 |
*/ |
| 584 |
private function convertFunction($token, $num_args) |
| 585 |
{ |
| 586 |
$args = $this->functions[$token][1]; |
| 587 |
|
| 588 |
// Fixed number of args eg. TIME($i, $j, $k). |
| 589 |
if ($args >= 0) { |
| 590 |
return pack('Cv', $this->ptg['ptgFuncV'], $this->functions[$token][0]); |
| 591 |
} |
| 592 |
// Variable number of args eg. SUM($i, $j, $k, ..). |
| 593 |
if ($args == -1) { |
| 594 |
return pack('CCv', $this->ptg['ptgFuncVarV'], $num_args, $this->functions[$token][0]); |
| 595 |
} |
| 596 |
} |
| 597 |
|
| 598 |
/** |
| 599 |
* Convert an Excel range such as A1:D4 to a ptgRefV. |
| 600 |
* |
| 601 |
* @param string $range An Excel range in the A1:A2 |
| 602 |
* @param int $class |
| 603 |
* |
| 604 |
* @return string |
| 605 |
*/ |
| 606 |
private function convertRange2d($range, $class = 0) |
| 607 |
{ |
| 608 |
// TODO: possible class value 0,1,2 check Formula.pm |
| 609 |
// Split the range into 2 cell refs |
| 610 |
if (preg_match('/^(\$)?([A-Ia-i]?[A-Za-z])(\$)?(\d+)\:(\$)?([A-Ia-i]?[A-Za-z])(\$)?(\d+)$/', $range)) { |
| 611 |
list($cell1, $cell2) = explode(':', $range); |
| 612 |
} else { |
| 613 |
// TODO: use real error codes |
| 614 |
throw new WriterException('Unknown range separator'); |
| 615 |
} |
| 616 |
|
| 617 |
// Convert the cell references |
| 618 |
list($row1, $col1) = $this->cellToPackedRowcol($cell1); |
| 619 |
list($row2, $col2) = $this->cellToPackedRowcol($cell2); |
| 620 |
|
| 621 |
// The ptg value depends on the class of the ptg. |
| 622 |
if ($class == 0) { |
| 623 |
$ptgArea = pack('C', $this->ptg['ptgArea']); |
| 624 |
} elseif ($class == 1) { |
| 625 |
$ptgArea = pack('C', $this->ptg['ptgAreaV']); |
| 626 |
} elseif ($class == 2) { |
| 627 |
$ptgArea = pack('C', $this->ptg['ptgAreaA']); |
| 628 |
} else { |
| 629 |
// TODO: use real error codes |
| 630 |
throw new WriterException("Unknown class $class"); |
| 631 |
} |
| 632 |
|
| 633 |
return $ptgArea . $row1 . $row2 . $col1 . $col2; |
| 634 |
} |
| 635 |
|
| 636 |
/** |
| 637 |
* Convert an Excel 3d range such as "Sheet1!A1:D4" or "Sheet1:Sheet2!A1:D4" to |
| 638 |
* a ptgArea3d. |
| 639 |
* |
| 640 |
* @param string $token an Excel range in the Sheet1!A1:A2 format |
| 641 |
* |
| 642 |
* @return mixed the packed ptgArea3d token on success |
| 643 |
*/ |
| 644 |
private function convertRange3d($token) |
| 645 |
{ |
| 646 |
// Split the ref at the ! symbol |
| 647 |
list($ext_ref, $range) = PhpspreadsheetWorksheet::extractSheetTitle($token, true); |
| 648 |
|
| 649 |
// Convert the external reference part (different for BIFF8) |
| 650 |
$ext_ref = $this->getRefIndex($ext_ref); |
| 651 |
|
| 652 |
// Split the range into 2 cell refs |
| 653 |
list($cell1, $cell2) = explode(':', $range); |
| 654 |
|
| 655 |
// Convert the cell references |
| 656 |
if (preg_match('/^(\$)?[A-Ia-i]?[A-Za-z](\$)?(\\d+)$/', $cell1)) { |
| 657 |
list($row1, $col1) = $this->cellToPackedRowcol($cell1); |
| 658 |
list($row2, $col2) = $this->cellToPackedRowcol($cell2); |
| 659 |
} else { // It's a rows range (like 26:27) |
| 660 |
list($row1, $col1, $row2, $col2) = $this->rangeToPackedRange($cell1 . ':' . $cell2); |
| 661 |
} |
| 662 |
|
| 663 |
// The ptg value depends on the class of the ptg. |
| 664 |
$ptgArea = pack('C', $this->ptg['ptgArea3d']); |
| 665 |
|
| 666 |
return $ptgArea . $ext_ref . $row1 . $row2 . $col1 . $col2; |
| 667 |
} |
| 668 |
|
| 669 |
/** |
| 670 |
* Convert an Excel reference such as A1, $B2, C$3 or $D$4 to a ptgRefV. |
| 671 |
* |
| 672 |
* @param string $cell An Excel cell reference |
| 673 |
* |
| 674 |
* @return string The cell in packed() format with the corresponding ptg |
| 675 |
*/ |
| 676 |
private function convertRef2d($cell) |
| 677 |
{ |
| 678 |
// Convert the cell reference |
| 679 |
$cell_array = $this->cellToPackedRowcol($cell); |
| 680 |
list($row, $col) = $cell_array; |
| 681 |
|
| 682 |
// The ptg value depends on the class of the ptg. |
| 683 |
$ptgRef = pack('C', $this->ptg['ptgRefA']); |
| 684 |
|
| 685 |
return $ptgRef . $row . $col; |
| 686 |
} |
| 687 |
|
| 688 |
/** |
| 689 |
* Convert an Excel 3d reference such as "Sheet1!A1" or "Sheet1:Sheet2!A1" to a |
| 690 |
* ptgRef3d. |
| 691 |
* |
| 692 |
* @param string $cell An Excel cell reference |
| 693 |
* |
| 694 |
* @return mixed the packed ptgRef3d token on success |
| 695 |
*/ |
| 696 |
private function convertRef3d($cell) |
| 697 |
{ |
| 698 |
// Split the ref at the ! symbol |
| 699 |
list($ext_ref, $cell) = PhpspreadsheetWorksheet::extractSheetTitle($cell, true); |
| 700 |
|
| 701 |
// Convert the external reference part (different for BIFF8) |
| 702 |
$ext_ref = $this->getRefIndex($ext_ref); |
| 703 |
|
| 704 |
// Convert the cell reference part |
| 705 |
list($row, $col) = $this->cellToPackedRowcol($cell); |
| 706 |
|
| 707 |
// The ptg value depends on the class of the ptg. |
| 708 |
$ptgRef = pack('C', $this->ptg['ptgRef3dA']); |
| 709 |
|
| 710 |
return $ptgRef . $ext_ref . $row . $col; |
| 711 |
} |
| 712 |
|
| 713 |
/** |
| 714 |
* Convert an error code to a ptgErr. |
| 715 |
* |
| 716 |
* @param string $errorCode The error code for conversion to its ptg value |
| 717 |
* |
| 718 |
* @return string The error code ptgErr |
| 719 |
*/ |
| 720 |
private function convertError($errorCode) |
| 721 |
{ |
| 722 |
switch ($errorCode) { |
| 723 |
case '#NULL!': |
| 724 |
return pack('C', 0x00); |
| 725 |
case '#DIV/0!': |
| 726 |
return pack('C', 0x07); |
| 727 |
case '#VALUE!': |
| 728 |
return pack('C', 0x0F); |
| 729 |
case '#REF!': |
| 730 |
return pack('C', 0x17); |
| 731 |
case '#NAME?': |
| 732 |
return pack('C', 0x1D); |
| 733 |
case '#NUM!': |
| 734 |
return pack('C', 0x24); |
| 735 |
case '#N/A': |
| 736 |
return pack('C', 0x2A); |
| 737 |
} |
| 738 |
|
| 739 |
return pack('C', 0xFF); |
| 740 |
} |
| 741 |
|
| 742 |
/** |
| 743 |
* Look up the REF index that corresponds to an external sheet name |
| 744 |
* (or range). If it doesn't exist yet add it to the workbook's references |
| 745 |
* array. It assumes all sheet names given must exist. |
| 746 |
* |
| 747 |
* @param string $ext_ref The name of the external reference |
| 748 |
* |
| 749 |
* @return mixed The reference index in packed() format on success |
| 750 |
*/ |
| 751 |
private function getRefIndex($ext_ref) |
| 752 |
{ |
| 753 |
$ext_ref = preg_replace("/^'/", '', $ext_ref); // Remove leading ' if any. |
| 754 |
$ext_ref = preg_replace("/'$/", '', $ext_ref); // Remove trailing ' if any. |
| 755 |
$ext_ref = str_replace('\'\'', '\'', $ext_ref); // Replace escaped '' with ' |
| 756 |
|
| 757 |
// Check if there is a sheet range eg., Sheet1:Sheet2. |
| 758 |
if (preg_match('/:/', $ext_ref)) { |
| 759 |
list($sheet_name1, $sheet_name2) = explode(':', $ext_ref); |
| 760 |
|
| 761 |
$sheet1 = $this->getSheetIndex($sheet_name1); |
| 762 |
if ($sheet1 == -1) { |
| 763 |
throw new WriterException("Unknown sheet name $sheet_name1 in formula"); |
| 764 |
} |
| 765 |
$sheet2 = $this->getSheetIndex($sheet_name2); |
| 766 |
if ($sheet2 == -1) { |
| 767 |
throw new WriterException("Unknown sheet name $sheet_name2 in formula"); |
| 768 |
} |
| 769 |
|
| 770 |
// Reverse max and min sheet numbers if necessary |
| 771 |
if ($sheet1 > $sheet2) { |
| 772 |
list($sheet1, $sheet2) = [$sheet2, $sheet1]; |
| 773 |
} |
| 774 |
} else { // Single sheet name only. |
| 775 |
$sheet1 = $this->getSheetIndex($ext_ref); |
| 776 |
if ($sheet1 == -1) { |
| 777 |
throw new WriterException("Unknown sheet name $ext_ref in formula"); |
| 778 |
} |
| 779 |
$sheet2 = $sheet1; |
| 780 |
} |
| 781 |
|
| 782 |
// assume all references belong to this document |
| 783 |
$supbook_index = 0x00; |
| 784 |
$ref = pack('vvv', $supbook_index, $sheet1, $sheet2); |
| 785 |
$totalreferences = count($this->references); |
| 786 |
$index = -1; |
| 787 |
for ($i = 0; $i < $totalreferences; ++$i) { |
| 788 |
if ($ref == $this->references[$i]) { |
| 789 |
$index = $i; |
| 790 |
|
| 791 |
break; |
| 792 |
} |
| 793 |
} |
| 794 |
// if REF was not found add it to references array |
| 795 |
if ($index == -1) { |
| 796 |
$this->references[$totalreferences] = $ref; |
| 797 |
$index = $totalreferences; |
| 798 |
} |
| 799 |
|
| 800 |
return pack('v', $index); |
| 801 |
} |
| 802 |
|
| 803 |
/** |
| 804 |
* Look up the index that corresponds to an external sheet name. The hash of |
| 805 |
* sheet names is updated by the addworksheet() method of the |
| 806 |
* \PhpOffice\PhpSpreadsheet\Writer\Xls\Workbook class. |
| 807 |
* |
| 808 |
* @param string $sheet_name Sheet name |
| 809 |
* |
| 810 |
* @return int The sheet index, -1 if the sheet was not found |
| 811 |
*/ |
| 812 |
private function getSheetIndex($sheet_name) |
| 813 |
{ |
| 814 |
if (!isset($this->externalSheets[$sheet_name])) { |
| 815 |
return -1; |
| 816 |
} |
| 817 |
|
| 818 |
return $this->externalSheets[$sheet_name]; |
| 819 |
} |
| 820 |
|
| 821 |
/** |
| 822 |
* This method is used to update the array of sheet names. It is |
| 823 |
* called by the addWorksheet() method of the |
| 824 |
* \PhpOffice\PhpSpreadsheet\Writer\Xls\Workbook class. |
| 825 |
* |
| 826 |
* @see \PhpOffice\PhpSpreadsheet\Writer\Xls\Workbook::addWorksheet() |
| 827 |
* |
| 828 |
* @param string $name The name of the worksheet being added |
| 829 |
* @param int $index The index of the worksheet being added |
| 830 |
*/ |
| 831 |
public function setExtSheet($name, $index) |
| 832 |
{ |
| 833 |
$this->externalSheets[$name] = $index; |
| 834 |
} |
| 835 |
|
| 836 |
/** |
| 837 |
* pack() row and column into the required 3 or 4 byte format. |
| 838 |
* |
| 839 |
* @param string $cell The Excel cell reference to be packed |
| 840 |
* |
| 841 |
* @return array Array containing the row and column in packed() format |
| 842 |
*/ |
| 843 |
private function cellToPackedRowcol($cell) |
| 844 |
{ |
| 845 |
$cell = strtoupper($cell); |
| 846 |
list($row, $col, $row_rel, $col_rel) = $this->cellToRowcol($cell); |
| 847 |
if ($col >= 256) { |
| 848 |
throw new WriterException("Column in: $cell greater than 255"); |
| 849 |
} |
| 850 |
if ($row >= 65536) { |
| 851 |
throw new WriterException("Row in: $cell greater than 65536 "); |
| 852 |
} |
| 853 |
|
| 854 |
// Set the high bits to indicate if row or col are relative. |
| 855 |
$col |= $col_rel << 14; |
| 856 |
$col |= $row_rel << 15; |
| 857 |
$col = pack('v', $col); |
| 858 |
|
| 859 |
$row = pack('v', $row); |
| 860 |
|
| 861 |
return [$row, $col]; |
| 862 |
} |
| 863 |
|
| 864 |
/** |
| 865 |
* pack() row range into the required 3 or 4 byte format. |
| 866 |
* Just using maximum col/rows, which is probably not the correct solution. |
| 867 |
* |
| 868 |
* @param string $range The Excel range to be packed |
| 869 |
* |
| 870 |
* @return array Array containing (row1,col1,row2,col2) in packed() format |
| 871 |
*/ |
| 872 |
private function rangeToPackedRange($range) |
| 873 |
{ |
| 874 |
preg_match('/(\$)?(\d+)\:(\$)?(\d+)/', $range, $match); |
| 875 |
// return absolute rows if there is a $ in the ref |
| 876 |
$row1_rel = empty($match[1]) ? 1 : 0; |
| 877 |
$row1 = $match[2]; |
| 878 |
$row2_rel = empty($match[3]) ? 1 : 0; |
| 879 |
$row2 = $match[4]; |
| 880 |
// Convert 1-index to zero-index |
| 881 |
--$row1; |
| 882 |
--$row2; |
| 883 |
// Trick poor inocent Excel |
| 884 |
$col1 = 0; |
| 885 |
$col2 = 65535; // FIXME: maximum possible value for Excel 5 (change this!!!) |
| 886 |
|
| 887 |
// FIXME: this changes for BIFF8 |
| 888 |
if (($row1 >= 65536) or ($row2 >= 65536)) { |
| 889 |
throw new WriterException("Row in: $range greater than 65536 "); |
| 890 |
} |
| 891 |
|
| 892 |
// Set the high bits to indicate if rows are relative. |
| 893 |
$col1 |= $row1_rel << 15; |
| 894 |
$col2 |= $row2_rel << 15; |
| 895 |
$col1 = pack('v', $col1); |
| 896 |
$col2 = pack('v', $col2); |
| 897 |
|
| 898 |
$row1 = pack('v', $row1); |
| 899 |
$row2 = pack('v', $row2); |
| 900 |
|
| 901 |
return [$row1, $col1, $row2, $col2]; |
| 902 |
} |
| 903 |
|
| 904 |
/** |
| 905 |
* Convert an Excel cell reference such as A1 or $B2 or C$3 or $D$4 to a zero |
| 906 |
* indexed row and column number. Also returns two (0,1) values to indicate |
| 907 |
* whether the row or column are relative references. |
| 908 |
* |
| 909 |
* @param string $cell the Excel cell reference in A1 format |
| 910 |
* |
| 911 |
* @return array |
| 912 |
*/ |
| 913 |
private function cellToRowcol($cell) |
| 914 |
{ |
| 915 |
preg_match('/(\$)?([A-I]?[A-Z])(\$)?(\d+)/', $cell, $match); |
| 916 |
// return absolute column if there is a $ in the ref |
| 917 |
$col_rel = empty($match[1]) ? 1 : 0; |
| 918 |
$col_ref = $match[2]; |
| 919 |
$row_rel = empty($match[3]) ? 1 : 0; |
| 920 |
$row = $match[4]; |
| 921 |
|
| 922 |
// Convert base26 column string to a number. |
| 923 |
$expn = strlen($col_ref) - 1; |
| 924 |
$col = 0; |
| 925 |
$col_ref_length = strlen($col_ref); |
| 926 |
for ($i = 0; $i < $col_ref_length; ++$i) { |
| 927 |
$col += (ord($col_ref[$i]) - 64) * pow(26, $expn); |
| 928 |
--$expn; |
| 929 |
} |
| 930 |
|
| 931 |
// Convert 1-index to zero-index |
| 932 |
--$row; |
| 933 |
--$col; |
| 934 |
|
| 935 |
return [$row, $col, $row_rel, $col_rel]; |
| 936 |
} |
| 937 |
|
| 938 |
/** |
| 939 |
* Advance to the next valid token. |
| 940 |
*/ |
| 941 |
private function advance() |
| 942 |
{ |
| 943 |
$i = $this->currentCharacter; |
| 944 |
$formula_length = strlen($this->formula); |
| 945 |
// eat up white spaces |
| 946 |
if ($i < $formula_length) { |
| 947 |
while ($this->formula[$i] == ' ') { |
| 948 |
++$i; |
| 949 |
} |
| 950 |
|
| 951 |
if ($i < ($formula_length - 1)) { |
| 952 |
$this->lookAhead = $this->formula[$i + 1]; |
| 953 |
} |
| 954 |
$token = ''; |
| 955 |
} |
| 956 |
|
| 957 |
while ($i < $formula_length) { |
| 958 |
$token .= $this->formula[$i]; |
| 959 |
|
| 960 |
if ($i < ($formula_length - 1)) { |
| 961 |
$this->lookAhead = $this->formula[$i + 1]; |
| 962 |
} else { |
| 963 |
$this->lookAhead = ''; |
| 964 |
} |
| 965 |
|
| 966 |
if ($this->match($token) != '') { |
| 967 |
$this->currentCharacter = $i + 1; |
| 968 |
$this->currentToken = $token; |
| 969 |
|
| 970 |
return 1; |
| 971 |
} |
| 972 |
|
| 973 |
if ($i < ($formula_length - 2)) { |
| 974 |
$this->lookAhead = $this->formula[$i + 2]; |
| 975 |
} else { // if we run out of characters lookAhead becomes empty |
| 976 |
$this->lookAhead = ''; |
| 977 |
} |
| 978 |
++$i; |
| 979 |
} |
| 980 |
//die("Lexical error ".$this->currentCharacter); |
| 981 |
} |
| 982 |
|
| 983 |
/** |
| 984 |
* Checks if it's a valid token. |
| 985 |
* |
| 986 |
* @param mixed $token the token to check |
| 987 |
* |
| 988 |
* @return mixed The checked token or false on failure |
| 989 |
*/ |
| 990 |
private function match($token) |
| 991 |
{ |
| 992 |
switch ($token) { |
| 993 |
case '+': |
| 994 |
case '-': |
| 995 |
case '*': |
| 996 |
case '/': |
| 997 |
case '(': |
| 998 |
case ')': |
| 999 |
case ',': |
| 1000 |
case ';': |
| 1001 |
case '>=': |
| 1002 |
case '<=': |
| 1003 |
case '=': |
| 1004 |
case '<>': |
| 1005 |
case '^': |
| 1006 |
case '&': |
| 1007 |
case '%': |
| 1008 |
return $token; |
| 1009 |
|
| 1010 |
break; |
| 1011 |
case '>': |
| 1012 |
if ($this->lookAhead === '=') { // it's a GE token |
| 1013 |
break; |
| 1014 |
} |
| 1015 |
|
| 1016 |
return $token; |
| 1017 |
|
| 1018 |
break; |
| 1019 |
case '<': |
| 1020 |
// it's a LE or a NE token |
| 1021 |
if (($this->lookAhead === '=') or ($this->lookAhead === '>')) { |
| 1022 |
break; |
| 1023 |
} |
| 1024 |
|
| 1025 |
return $token; |
| 1026 |
|
| 1027 |
break; |
| 1028 |
default: |
| 1029 |
// if it's a reference A1 or $A$1 or $A1 or A$1 |
| 1030 |
if (preg_match('/^\$?[A-Ia-i]?[A-Za-z]\$?\d+$/', $token) and !preg_match('/\d/', $this->lookAhead) and ($this->lookAhead !== ':') and ($this->lookAhead !== '.') and ($this->lookAhead !== '!')) { |
| 1031 |
return $token; |
| 1032 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?[A-Ia-i]?[A-Za-z]\$?\\d+$/u', $token) and !preg_match('/\d/', $this->lookAhead) and ($this->lookAhead !== ':') and ($this->lookAhead !== '.')) { |
| 1033 |
// If it's an external reference (Sheet1!A1 or Sheet1:Sheet2!A1 or Sheet1!$A$1 or Sheet1:Sheet2!$A$1) |
| 1034 |
return $token; |
| 1035 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?[A-Ia-i]?[A-Za-z]\\$?\\d+$/u", $token) and !preg_match('/\d/', $this->lookAhead) and ($this->lookAhead !== ':') and ($this->lookAhead !== '.')) { |
| 1036 |
// If it's an external reference ('Sheet1'!A1 or 'Sheet1:Sheet2'!A1 or 'Sheet1'!$A$1 or 'Sheet1:Sheet2'!$A$1) |
| 1037 |
return $token; |
| 1038 |
} elseif (preg_match('/^(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+:(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+$/', $token) && !preg_match('/\d/', $this->lookAhead)) { |
| 1039 |
// if it's a range A1:A2 or $A$1:$A$2 |
| 1040 |
return $token; |
| 1041 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?([A-Ia-i]?[A-Za-z])?\$?\\d+:\$?([A-Ia-i]?[A-Za-z])?\$?\\d+$/u', $token) and !preg_match('/\d/', $this->lookAhead)) { |
| 1042 |
// If it's an external range like Sheet1!A1:B2 or Sheet1:Sheet2!A1:B2 or Sheet1!$A$1:$B$2 or Sheet1:Sheet2!$A$1:$B$2 |
| 1043 |
return $token; |
| 1044 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?([A-Ia-i]?[A-Za-z])?\\$?\\d+:\\$?([A-Ia-i]?[A-Za-z])?\\$?\\d+$/u", $token) and !preg_match('/\d/', $this->lookAhead)) { |
| 1045 |
// If it's an external range like 'Sheet1'!A1:B2 or 'Sheet1:Sheet2'!A1:B2 or 'Sheet1'!$A$1:$B$2 or 'Sheet1:Sheet2'!$A$1:$B$2 |
| 1046 |
return $token; |
| 1047 |
} elseif (is_numeric($token) and (!is_numeric($token . $this->lookAhead) or ($this->lookAhead == '')) and ($this->lookAhead !== '!') and ($this->lookAhead !== ':')) { |
| 1048 |
// If it's a number (check that it's not a sheet name or range) |
| 1049 |
return $token; |
| 1050 |
} elseif (preg_match('/"([^"]|""){0,255}"/', $token) and $this->lookAhead !== '"' and (substr_count($token, '"') % 2 == 0)) { |
| 1051 |
// If it's a string (of maximum 255 characters) |
| 1052 |
return $token; |
| 1053 |
} elseif (preg_match('/^#[A-Z0\\/]{3,5}[!?]{1}$/', $token) or $token === '#N/A') { |
| 1054 |
// If it's an error code |
| 1055 |
return $token; |
| 1056 |
} elseif (preg_match("/^[A-Z0-9\xc0-\xdc\\.]+$/i", $token) and ($this->lookAhead === '(')) { |
| 1057 |
// if it's a function call |
| 1058 |
return $token; |
| 1059 |
} elseif (substr($token, -1) === ')') { |
| 1060 |
// It's an argument of some description (e.g. a named range), |
| 1061 |
// precise nature yet to be determined |
| 1062 |
return $token; |
| 1063 |
} |
| 1064 |
|
| 1065 |
return ''; |
| 1066 |
} |
| 1067 |
} |
| 1068 |
|
| 1069 |
/** |
| 1070 |
* The parsing method. It parses a formula. |
| 1071 |
* |
| 1072 |
* @param string $formula the formula to parse, without the initial equal |
| 1073 |
* sign (=) |
| 1074 |
* |
| 1075 |
* @return mixed true on success |
| 1076 |
*/ |
| 1077 |
public function parse($formula) |
| 1078 |
{ |
| 1079 |
$this->currentCharacter = 0; |
| 1080 |
$this->formula = $formula; |
| 1081 |
$this->lookAhead = isset($formula[1]) ? $formula[1] : ''; |
| 1082 |
$this->advance(); |
| 1083 |
$this->parseTree = $this->condition(); |
| 1084 |
|
| 1085 |
return true; |
| 1086 |
} |
| 1087 |
|
| 1088 |
/** |
| 1089 |
* It parses a condition. It assumes the following rule: |
| 1090 |
* Cond -> Expr [(">" | "<") Expr]. |
| 1091 |
* |
| 1092 |
* @return mixed The parsed ptg'd tree on success |
| 1093 |
*/ |
| 1094 |
private function condition() |
| 1095 |
{ |
| 1096 |
$result = $this->expression(); |
| 1097 |
if ($this->currentToken == '<') { |
| 1098 |
$this->advance(); |
| 1099 |
$result2 = $this->expression(); |
| 1100 |
$result = $this->createTree('ptgLT', $result, $result2); |
| 1101 |
} elseif ($this->currentToken == '>') { |
| 1102 |
$this->advance(); |
| 1103 |
$result2 = $this->expression(); |
| 1104 |
$result = $this->createTree('ptgGT', $result, $result2); |
| 1105 |
} elseif ($this->currentToken == '<=') { |
| 1106 |
$this->advance(); |
| 1107 |
$result2 = $this->expression(); |
| 1108 |
$result = $this->createTree('ptgLE', $result, $result2); |
| 1109 |
} elseif ($this->currentToken == '>=') { |
| 1110 |
$this->advance(); |
| 1111 |
$result2 = $this->expression(); |
| 1112 |
$result = $this->createTree('ptgGE', $result, $result2); |
| 1113 |
} elseif ($this->currentToken == '=') { |
| 1114 |
$this->advance(); |
| 1115 |
$result2 = $this->expression(); |
| 1116 |
$result = $this->createTree('ptgEQ', $result, $result2); |
| 1117 |
} elseif ($this->currentToken == '<>') { |
| 1118 |
$this->advance(); |
| 1119 |
$result2 = $this->expression(); |
| 1120 |
$result = $this->createTree('ptgNE', $result, $result2); |
| 1121 |
} elseif ($this->currentToken == '&') { |
| 1122 |
$this->advance(); |
| 1123 |
$result2 = $this->expression(); |
| 1124 |
$result = $this->createTree('ptgConcat', $result, $result2); |
| 1125 |
} |
| 1126 |
|
| 1127 |
return $result; |
| 1128 |
} |
| 1129 |
|
| 1130 |
/** |
| 1131 |
* It parses a expression. It assumes the following rule: |
| 1132 |
* Expr -> Term [("+" | "-") Term] |
| 1133 |
* -> "string" |
| 1134 |
* -> "-" Term : Negative value |
| 1135 |
* -> "+" Term : Positive value |
| 1136 |
* -> Error code. |
| 1137 |
* |
| 1138 |
* @return mixed The parsed ptg'd tree on success |
| 1139 |
*/ |
| 1140 |
private function expression() |
| 1141 |
{ |
| 1142 |
// If it's a string return a string node |
| 1143 |
if (preg_match('/"([^"]|""){0,255}"/', $this->currentToken)) { |
| 1144 |
$tmp = str_replace('""', '"', $this->currentToken); |
| 1145 |
if (($tmp == '"') || ($tmp == '')) { |
| 1146 |
// Trap for "" that has been used for an empty string |
| 1147 |
$tmp = '""'; |
| 1148 |
} |
| 1149 |
$result = $this->createTree($tmp, '', ''); |
| 1150 |
$this->advance(); |
| 1151 |
|
| 1152 |
return $result; |
| 1153 |
// If it's an error code |
| 1154 |
} elseif (preg_match('/^#[A-Z0\\/]{3,5}[!?]{1}$/', $this->currentToken) or $this->currentToken == '#N/A') { |
| 1155 |
$result = $this->createTree($this->currentToken, 'ptgErr', ''); |
| 1156 |
$this->advance(); |
| 1157 |
|
| 1158 |
return $result; |
| 1159 |
// If it's a negative value |
| 1160 |
} elseif ($this->currentToken == '-') { |
| 1161 |
// catch "-" Term |
| 1162 |
$this->advance(); |
| 1163 |
$result2 = $this->expression(); |
| 1164 |
$result = $this->createTree('ptgUminus', $result2, ''); |
| 1165 |
|
| 1166 |
return $result; |
| 1167 |
// If it's a positive value |
| 1168 |
} elseif ($this->currentToken == '+') { |
| 1169 |
// catch "+" Term |
| 1170 |
$this->advance(); |
| 1171 |
$result2 = $this->expression(); |
| 1172 |
$result = $this->createTree('ptgUplus', $result2, ''); |
| 1173 |
|
| 1174 |
return $result; |
| 1175 |
} |
| 1176 |
$result = $this->term(); |
| 1177 |
while (($this->currentToken == '+') or |
| 1178 |
($this->currentToken == '-') or |
| 1179 |
($this->currentToken == '^')) { |
| 1180 |
if ($this->currentToken == '+') { |
| 1181 |
$this->advance(); |
| 1182 |
$result2 = $this->term(); |
| 1183 |
$result = $this->createTree('ptgAdd', $result, $result2); |
| 1184 |
} elseif ($this->currentToken == '-') { |
| 1185 |
$this->advance(); |
| 1186 |
$result2 = $this->term(); |
| 1187 |
$result = $this->createTree('ptgSub', $result, $result2); |
| 1188 |
} else { |
| 1189 |
$this->advance(); |
| 1190 |
$result2 = $this->term(); |
| 1191 |
$result = $this->createTree('ptgPower', $result, $result2); |
| 1192 |
} |
| 1193 |
} |
| 1194 |
|
| 1195 |
return $result; |
| 1196 |
} |
| 1197 |
|
| 1198 |
/** |
| 1199 |
* This function just introduces a ptgParen element in the tree, so that Excel |
| 1200 |
* doesn't get confused when working with a parenthesized formula afterwards. |
| 1201 |
* |
| 1202 |
* @see fact() |
| 1203 |
* |
| 1204 |
* @return array The parsed ptg'd tree |
| 1205 |
*/ |
| 1206 |
private function parenthesizedExpression() |
| 1207 |
{ |
| 1208 |
$result = $this->createTree('ptgParen', $this->expression(), ''); |
| 1209 |
|
| 1210 |
return $result; |
| 1211 |
} |
| 1212 |
|
| 1213 |
/** |
| 1214 |
* It parses a term. It assumes the following rule: |
| 1215 |
* Term -> Fact [("*" | "/") Fact]. |
| 1216 |
* |
| 1217 |
* @return mixed The parsed ptg'd tree on success |
| 1218 |
*/ |
| 1219 |
private function term() |
| 1220 |
{ |
| 1221 |
$result = $this->fact(); |
| 1222 |
while (($this->currentToken == '*') or |
| 1223 |
($this->currentToken == '/')) { |
| 1224 |
if ($this->currentToken == '*') { |
| 1225 |
$this->advance(); |
| 1226 |
$result2 = $this->fact(); |
| 1227 |
$result = $this->createTree('ptgMul', $result, $result2); |
| 1228 |
} else { |
| 1229 |
$this->advance(); |
| 1230 |
$result2 = $this->fact(); |
| 1231 |
$result = $this->createTree('ptgDiv', $result, $result2); |
| 1232 |
} |
| 1233 |
} |
| 1234 |
|
| 1235 |
return $result; |
| 1236 |
} |
| 1237 |
|
| 1238 |
/** |
| 1239 |
* It parses a factor. It assumes the following rule: |
| 1240 |
* Fact -> ( Expr ) |
| 1241 |
* | CellRef |
| 1242 |
* | CellRange |
| 1243 |
* | Number |
| 1244 |
* | Function. |
| 1245 |
* |
| 1246 |
* @return mixed The parsed ptg'd tree on success |
| 1247 |
*/ |
| 1248 |
private function fact() |
| 1249 |
{ |
| 1250 |
if ($this->currentToken === '(') { |
| 1251 |
$this->advance(); // eat the "(" |
| 1252 |
$result = $this->parenthesizedExpression(); |
| 1253 |
if ($this->currentToken !== ')') { |
| 1254 |
throw new WriterException("')' token expected."); |
| 1255 |
} |
| 1256 |
$this->advance(); // eat the ")" |
| 1257 |
return $result; |
| 1258 |
} |
| 1259 |
// if it's a reference |
| 1260 |
if (preg_match('/^\$?[A-Ia-i]?[A-Za-z]\$?\d+$/', $this->currentToken)) { |
| 1261 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1262 |
$this->advance(); |
| 1263 |
|
| 1264 |
return $result; |
| 1265 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?[A-Ia-i]?[A-Za-z]\$?\\d+$/u', $this->currentToken)) { |
| 1266 |
// If it's an external reference (Sheet1!A1 or Sheet1:Sheet2!A1 or Sheet1!$A$1 or Sheet1:Sheet2!$A$1) |
| 1267 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1268 |
$this->advance(); |
| 1269 |
|
| 1270 |
return $result; |
| 1271 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?[A-Ia-i]?[A-Za-z]\\$?\\d+$/u", $this->currentToken)) { |
| 1272 |
// If it's an external reference ('Sheet1'!A1 or 'Sheet1:Sheet2'!A1 or 'Sheet1'!$A$1 or 'Sheet1:Sheet2'!$A$1) |
| 1273 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1274 |
$this->advance(); |
| 1275 |
|
| 1276 |
return $result; |
| 1277 |
} elseif (preg_match('/^(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+:(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+$/', $this->currentToken) or |
| 1278 |
preg_match('/^(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+\.\.(\$)?[A-Ia-i]?[A-Za-z](\$)?\d+$/', $this->currentToken)) { |
| 1279 |
// if it's a range A1:B2 or $A$1:$B$2 |
| 1280 |
// must be an error? |
| 1281 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1282 |
$this->advance(); |
| 1283 |
|
| 1284 |
return $result; |
| 1285 |
} elseif (preg_match('/^' . self::REGEX_SHEET_TITLE_UNQUOTED . '(\\:' . self::REGEX_SHEET_TITLE_UNQUOTED . ')?\\!\$?([A-Ia-i]?[A-Za-z])?\$?\\d+:\$?([A-Ia-i]?[A-Za-z])?\$?\\d+$/u', $this->currentToken)) { |
| 1286 |
// If it's an external range (Sheet1!A1:B2 or Sheet1:Sheet2!A1:B2 or Sheet1!$A$1:$B$2 or Sheet1:Sheet2!$A$1:$B$2) |
| 1287 |
// must be an error? |
| 1288 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1289 |
$this->advance(); |
| 1290 |
|
| 1291 |
return $result; |
| 1292 |
} elseif (preg_match("/^'" . self::REGEX_SHEET_TITLE_QUOTED . '(\\:' . self::REGEX_SHEET_TITLE_QUOTED . ")?'\\!\\$?([A-Ia-i]?[A-Za-z])?\\$?\\d+:\\$?([A-Ia-i]?[A-Za-z])?\\$?\\d+$/u", $this->currentToken)) { |
| 1293 |
// If it's an external range ('Sheet1'!A1:B2 or 'Sheet1'!A1:B2 or 'Sheet1'!$A$1:$B$2 or 'Sheet1'!$A$1:$B$2) |
| 1294 |
// must be an error? |
| 1295 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1296 |
$this->advance(); |
| 1297 |
|
| 1298 |
return $result; |
| 1299 |
} elseif (is_numeric($this->currentToken)) { |
| 1300 |
// If it's a number or a percent |
| 1301 |
if ($this->lookAhead === '%') { |
| 1302 |
$result = $this->createTree('ptgPercent', $this->currentToken, ''); |
| 1303 |
$this->advance(); // Skip the percentage operator once we've pre-built that tree |
| 1304 |
} else { |
| 1305 |
$result = $this->createTree($this->currentToken, '', ''); |
| 1306 |
} |
| 1307 |
$this->advance(); |
| 1308 |
|
| 1309 |
return $result; |
| 1310 |
} elseif (preg_match("/^[A-Z0-9\xc0-\xdc\\.]+$/i", $this->currentToken)) { |
| 1311 |
// if it's a function call |
| 1312 |
$result = $this->func(); |
| 1313 |
|
| 1314 |
return $result; |
| 1315 |
} |
| 1316 |
|
| 1317 |
throw new WriterException('Syntax error: ' . $this->currentToken . ', lookahead: ' . $this->lookAhead . ', current char: ' . $this->currentCharacter); |
| 1318 |
} |
| 1319 |
|
| 1320 |
/** |
| 1321 |
* It parses a function call. It assumes the following rule: |
| 1322 |
* Func -> ( Expr [,Expr]* ). |
| 1323 |
* |
| 1324 |
* @return mixed The parsed ptg'd tree on success |
| 1325 |
*/ |
| 1326 |
private function func() |
| 1327 |
{ |
| 1328 |
$num_args = 0; // number of arguments received |
| 1329 |
$function = strtoupper($this->currentToken); |
| 1330 |
$result = ''; // initialize result |
| 1331 |
$this->advance(); |
| 1332 |
$this->advance(); // eat the "(" |
| 1333 |
while ($this->currentToken !== ')') { |
| 1334 |
if ($num_args > 0) { |
| 1335 |
if ($this->currentToken === ',' || $this->currentToken === ';') { |
| 1336 |
$this->advance(); // eat the "," or ";" |
| 1337 |
} else { |
| 1338 |
throw new WriterException("Syntax error: comma expected in function $function, arg #{$num_args}"); |
| 1339 |
} |
| 1340 |
$result2 = $this->condition(); |
| 1341 |
$result = $this->createTree('arg', $result, $result2); |
| 1342 |
} else { // first argument |
| 1343 |
$result2 = $this->condition(); |
| 1344 |
$result = $this->createTree('arg', '', $result2); |
| 1345 |
} |
| 1346 |
++$num_args; |
| 1347 |
} |
| 1348 |
if (!isset($this->functions[$function])) { |
| 1349 |
throw new WriterException("Function $function() doesn't exist"); |
| 1350 |
} |
| 1351 |
$args = $this->functions[$function][1]; |
| 1352 |
// If fixed number of args eg. TIME($i, $j, $k). Check that the number of args is valid. |
| 1353 |
if (($args >= 0) and ($args != $num_args)) { |
| 1354 |
throw new WriterException("Incorrect number of arguments in function $function() "); |
| 1355 |
} |
| 1356 |
|
| 1357 |
$result = $this->createTree($function, $result, $num_args); |
| 1358 |
$this->advance(); // eat the ")" |
| 1359 |
return $result; |
| 1360 |
} |
| 1361 |
|
| 1362 |
/** |
| 1363 |
* Creates a tree. In fact an array which may have one or two arrays (sub-trees) |
| 1364 |
* as elements. |
| 1365 |
* |
| 1366 |
* @param mixed $value the value of this node |
| 1367 |
* @param mixed $left the left array (sub-tree) or a final node |
| 1368 |
* @param mixed $right the right array (sub-tree) or a final node |
| 1369 |
* |
| 1370 |
* @return array A tree |
| 1371 |
*/ |
| 1372 |
private function createTree($value, $left, $right) |
| 1373 |
{ |
| 1374 |
return ['value' => $value, 'left' => $left, 'right' => $right]; |
| 1375 |
} |
| 1376 |
|
| 1377 |
/** |
| 1378 |
* Builds a string containing the tree in reverse polish notation (What you |
| 1379 |
* would use in a HP calculator stack). |
| 1380 |
* The following tree:. |
| 1381 |
* |
| 1382 |
* + |
| 1383 |
* / \ |
| 1384 |
* 2 3 |
| 1385 |
* |
| 1386 |
* produces: "23+" |
| 1387 |
* |
| 1388 |
* The following tree: |
| 1389 |
* |
| 1390 |
* + |
| 1391 |
* / \ |
| 1392 |
* 3 * |
| 1393 |
* / \ |
| 1394 |
* 6 A1 |
| 1395 |
* |
| 1396 |
* produces: "36A1*+" |
| 1397 |
* |
| 1398 |
* In fact all operands, functions, references, etc... are written as ptg's |
| 1399 |
* |
| 1400 |
* @param array $tree the optional tree to convert |
| 1401 |
* |
| 1402 |
* @return string The tree in reverse polish notation |
| 1403 |
*/ |
| 1404 |
public function toReversePolish($tree = []) |
| 1405 |
{ |
| 1406 |
$polish = ''; // the string we are going to return |
| 1407 |
if (empty($tree)) { // If it's the first call use parseTree |
| 1408 |
$tree = $this->parseTree; |
| 1409 |
} |
| 1410 |
|
| 1411 |
if (is_array($tree['left'])) { |
| 1412 |
$converted_tree = $this->toReversePolish($tree['left']); |
| 1413 |
$polish .= $converted_tree; |
| 1414 |
} elseif ($tree['left'] != '') { // It's a final node |
| 1415 |
$converted_tree = $this->convert($tree['left']); |
| 1416 |
$polish .= $converted_tree; |
| 1417 |
} |
| 1418 |
if (is_array($tree['right'])) { |
| 1419 |
$converted_tree = $this->toReversePolish($tree['right']); |
| 1420 |
$polish .= $converted_tree; |
| 1421 |
} elseif ($tree['right'] != '') { // It's a final node |
| 1422 |
$converted_tree = $this->convert($tree['right']); |
| 1423 |
$polish .= $converted_tree; |
| 1424 |
} |
| 1425 |
// if it's a function convert it here (so we can set it's arguments) |
| 1426 |
if (preg_match("/^[A-Z0-9\xc0-\xdc\\.]+$/", $tree['value']) and |
| 1427 |
!preg_match('/^([A-Ia-i]?[A-Za-z])(\d+)$/', $tree['value']) and |
| 1428 |
!preg_match('/^[A-Ia-i]?[A-Za-z](\\d+)\\.\\.[A-Ia-i]?[A-Za-z](\\d+)$/', $tree['value']) and |
| 1429 |
!is_numeric($tree['value']) and |
| 1430 |
!isset($this->ptg[$tree['value']])) { |
| 1431 |
// left subtree for a function is always an array. |
| 1432 |
if ($tree['left'] != '') { |
| 1433 |
$left_tree = $this->toReversePolish($tree['left']); |
| 1434 |
} else { |
| 1435 |
$left_tree = ''; |
| 1436 |
} |
| 1437 |
// add it's left subtree and return. |
| 1438 |
return $left_tree . $this->convertFunction($tree['value'], $tree['right']); |
| 1439 |
} |
| 1440 |
$converted_tree = $this->convert($tree['value']); |
| 1441 |
|
| 1442 |
$polish .= $converted_tree; |
| 1443 |
|
| 1444 |
return $polish; |
| 1445 |
} |
| 1446 |
} |
| 1447 |
|
