<?php /** @noinspection ReturnTypeCanBeDeclaredInspection */
/** @noinspection PhpMissingReturnTypeInspection */
/** @noinspection NullCoalescingOperatorCanBeUsedInspection */

/** @noinspection PhpIssetCanBeReplacedWithCoalesceInspection */

namespace Shuchkin;

/**
 * Class SimpleXLSXGen
 * Export data to MS Excel. PHP XLSX generator
 * Author: sergey.shuchkin@gmail.com
 */

class SimpleXLSXGen {

    public $curSheet;
    protected $defaultFont;
    protected $defaultFontSize;
    protected $sheets;
    protected $template;
    protected $XF, $XF_KEYS; // cellXfs
    protected $SI, $SI_KEYS; // shared strings
    const N_NORMAL = 0; // General
    const N_INT = 1; // 0
    const N_DEC = 2; // 0.00
    const N_PERCENT_INT = 9; // 0%
    const N_PRECENT_DEC = 10; // 0.00%
    const N_DATE = 14; // mm-dd-yy
    const N_TIME = 20; // h:mm
    const N_DATETIME = 22; // m/d/yy h:mm
    const F_NORMAL = 0;
    const F_HYPERLINK = 1;
    const F_BOLD = 2;
    const F_ITALIC = 4;
    const F_UNDERLINE = 8;
    const F_STRIKE = 16;
    const F_COLOR = 32;
    const FL_NONE = 0; // none
    const FL_SOLID = 1; // solid
    const FL_MEDIUM_GRAY = 2; // mediumGray
    const FL_DARK_GRAY = 4; // darkGray
	const FL_LIGHT_GRAY = 8; // lightGray
    const FL_GRAY_125 = 16; // gray125
    const FL_COLOR = 32;
    const A_DEFAULT = 0;
    const A_LEFT = 1;
    const A_RIGHT = 2;
    const A_CENTER = 4;
    const A_TOP = 8;
    const A_MIDDLE = 16;
    const A_BOTTOM = 32;

    public function __construct() {
        $this->curSheet = -1;
        $this->defaultFont = 'Calibri';
        $this->sheets = [ ['name' => 'Sheet1', 'rows' => [], 'hyperlinks' => [], 'mergecells' => [] ] ];
        $this->SI = [];		// sharedStrings index
        $this->SI_KEYS = []; //  & keys
        $this->XF  = [  // styles
            [self::N_NORMAL, self::A_DEFAULT, self::F_NORMAL, self::FL_NONE, 0, 0],
            [self::N_NORMAL, self::A_DEFAULT, self::F_NORMAL, self::FL_GRAY_125, 0, 0], // hack
        ];
        $this->XF_KEYS['0-0-0-0-0-0'] = 0; // & keys
        $this->XF_KEYS['0-0-0-16-0-0'] = 1;

        $this->template = [
            '_rels/.rels' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>
<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>
</Relationships>',
            'docProps/app.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties">
<TotalTime>0</TotalTime>
<Application>'.__CLASS__.'</Application></Properties>',
            'docProps/core.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dcmitype="http://purl.org/dc/dcmitype/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<dcterms:created xsi:type="dcterms:W3CDTF">{DATE}</dcterms:created>
<dc:language>en-US</dc:language>
<dcterms:modified xsi:type="dcterms:W3CDTF">{DATE}</dcterms:modified>
<cp:revision>1</cp:revision>
</cp:coreProperties>',
            'xl/_rels/workbook.xml.rels' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>
{SHEETS}',
            'xl/worksheets/sheet1.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"
    xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
><dimension ref="{REF}"/>{COLS}<sheetData>{ROWS}</sheetData>{MERGECELLS}{HYPERLINKS}</worksheet>',
            'xl/worksheets/_rels/sheet1.xml.rels' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">{HYPERLINKS}</Relationships>',
            'xl/sharedStrings.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="{CNT}" uniqueCount="{CNT}">{STRINGS}</sst>',
            'xl/styles.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
{FONTS}
{FILLS}
<borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders>
<cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" /></cellStyleXfs>
{XF}
<cellStyles count="1">
    <cellStyle name="Normal" xfId="0" builtinId="0"/>
</cellStyles>
</styleSheet>',
            'xl/workbook.xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
<fileVersion appName="'.__CLASS__.'"/><sheets>
{SHEETS}
</sheets></workbook>',
            '[Content_Types].xml' => '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">
<Override PartName="/rels/.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>
<Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/>
<Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/>
<Override PartName="/xl/_rels/workbook.xml.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>
<Override PartName="/xl/sharedStrings.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml"/>
<Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"/>
<Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>
{TYPES}
</Types>',
        ];

        // <col min="1" max="1" width="22.1796875" bestFit="1" customWidth="1"/>
        // <row r="1" spans="1:2" x14ac:dyDescent="0.35"><c r="A1" t="s"><v>0</v></c><c r="B1"><v>100</v></c></row><row r="2" spans="1:2" x14ac:dyDescent="0.35"><c r="A2" t="s"><v>1</v></c><c r="B2"><v>200</v></c></row>
        // <si><t>Простой шаблон</t></si><si><t>Будем делать генератор</t></si>
    }
    public static function fromArray( array $rows, $sheetName = null ) {
        return (new static())->addSheet( $rows, $sheetName );
    }

    public function addSheet( array $rows, $name = null ) {

        $this->curSheet++;
        if ( $name === null ) { // autogenerated sheet names
            $name = 'Sheet'.($this->curSheet+1);
        } else {
            $name = mb_substr($name, 0, 31);
            $names = [];
            foreach( $this->sheets as $sh ) {
                $names[ mb_strtoupper( $sh['name']) ] = 1;
            }
            for( $i = 0; $i < 100; $i++ ) {
                $postfix = ' ('.$i.')';
                $new_name = ($i === 0) ? $name : $name . $postfix;
                if (mb_strlen($new_name) > 31) {
                    $new_name = mb_substr($name,0, 31-mb_strlen($postfix)) . $postfix;
                }
                $NEW_NAME = mb_strtoupper( $new_name );
                if ( !isset( $names[ $NEW_NAME ]) ) {
                    $name = $new_name;
                    break;
                }
            }
        }

        $this->sheets[$this->curSheet] = ['name' => $name, 'hyperlinks' => [], 'mergecells' => []];

        if ( isset( $rows[0] ) && is_array($rows[0]) ) {
            $this->sheets[$this->curSheet]['rows'] = $rows;
        } else {
            $this->sheets[$this->curSheet]['rows'] = [];
        }
        return $this;
    }

    public function __toString() {
        $fh = fopen( 'php://memory', 'wb' );
        if ( ! $fh ) {
            return '';
        }

        if ( ! $this->_write( $fh ) ) {
            fclose( $fh );
            return '';
        }
        $size = ftell( $fh );
        fseek( $fh, 0);

        return (string) fread( $fh, $size );
    }

    public function saveAs( $filename ) {
        $fh = fopen( $filename, 'wb' );
        if (!$fh) {
            return false;
        }
        if ( !$this->_write($fh) ) {
            fclose($fh);
            return false;
        }
        fclose($fh);

        return true;
    }

    public function download() {
        return $this->downloadAs( gmdate('YmdHi') . '.xlsx' );
    }

    public function downloadAs( $filename ) {
        $fh = fopen('php://memory','wb');
        if (!$fh) {
            return false;
        }

        if ( !$this->_write( $fh )) {
            fclose( $fh );
            return false;
        }

        $size = ftell($fh);

        header('Content-type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment; filename="'.$filename.'"');
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s \G\M\T' , time() ));
        header('Content-Length: '.$size);

        while( ob_get_level() ) {
            ob_end_clean();
        }
        fseek($fh,0);
        fpassthru( $fh );

        fclose($fh);
        return true;
    }

    protected function _write( $fh ) {


        $dirSignatureE= "\x50\x4b\x05\x06"; // end of central dir signature
        $zipComments = 'Generated by '.__CLASS__.' PHP class, thanks sergey.shuchkin@gmail.com';

        if (!$fh) {
            return false;
        }

        $cdrec = '';	// central directory content
        $entries= 0;	// number of zipped files
        $cnt_sheets = count( $this->sheets );

        foreach ($this->template as $cfilename => $template ) {
            if ( $cfilename === 'xl/_rels/workbook.xml.rels' ) {
                $s = '';
                for ( $i = 0; $i < $cnt_sheets; $i++) {
                    $s .= '<Relationship Id="rId'.($i+2).'" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet"'.
                         ' Target="worksheets/sheet'.($i+1).".xml\"/>\n";
                }
                $s .= '<Relationship Id="rId'.($i+2).'" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/></Relationships>';
                $template = str_replace('{SHEETS}', $s, $template);
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            } elseif ( $cfilename === 'xl/workbook.xml' ) {
                $s = '';
                foreach ( $this->sheets as $k => $v ) {
                    $s .= '<sheet name="' . $this->esc( $v['name'] ) . '" sheetId="' . ( $k + 1) . '" state="visible" r:id="rId' . ( $k + 2) . '"/>';
                }
                $template = str_replace('{SHEETS}', $s, $template);
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            }
            elseif ( $cfilename === 'docProps/core.xml' ) {
                $template = str_replace('{DATE}', gmdate('Y-m-d\TH:i:s\Z'), $template);
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            } elseif ( $cfilename === 'xl/sharedStrings.xml' ) {
                if (!count($this->SI)) {
                    $this->SI[] = 'No Data';
                }
                $si_cnt = count($this->SI);
                $si = '<si><t>'.implode("</t></si>\r\n<si><t>", $this->SI).'</t></si>';
                $template = str_replace(['{CNT}', '{STRINGS}'], [ $si_cnt, $si ], $template );
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            } elseif ( $cfilename === 'xl/worksheets/sheet1.xml' ) {
                foreach ( $this->sheets as $k => $v ) {
                    $filename = 'xl/worksheets/sheet'.($k+1).'.xml';
                    $xml = $this->_sheetToXML($k, $template);
                    $this->_writeEntry($fh, $cdrec, $filename, $xml );
                    $entries++;
                }
                $xml = null;
            } elseif ( $cfilename === 'xl/worksheets/_rels/sheet1.xml.rels' ) {
                foreach ( $this->sheets as $k => $v ) {
                    if ( count($v['hyperlinks'])) {
                        $RH = [];
                        $filename = 'xl/worksheets/_rels/sheet' . ( $k + 1 ) . '.xml.rels';
                        foreach ( $v['hyperlinks'] as $h ) {
                            $RH[] = '<Relationship Id="' . $h['ID'] . '" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink" Target="' . $this->esc($h['H']) . '" TargetMode="External"/>';
                        }
                        $xml = str_replace( '{HYPERLINKS}', implode( "\r\n", $RH ), $template );
                        $this->_writeEntry( $fh, $cdrec, $filename, $xml );
                        $entries++;
                    }
                }
                $xml = null;

            } elseif ( $cfilename === '[Content_Types].xml' ) {
                $TYPES = ['<Override PartName="/_rels/.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>'];
                foreach ( $this->sheets as $k => $v) {
                    $TYPES[] = '<Override PartName="/xl/worksheets/sheet'.($k+1).
                            '.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>';
                    if (count( $v['hyperlinks'])) {
                        $TYPES[] = '<Override PartName="/xl/worksheets/_rels/sheet'.($k+1).'.xml.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>';
                    }
                }
                $template = str_replace('{TYPES}', implode("\r\n", $TYPES), $template);
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            } elseif ( $cfilename === 'xl/styles.xml' ) {
                $XF = $FONTS = $F_KEYS = $FILLS = $FL_KEYS = [];
//                print_r( $this->XF );
                foreach( $this->XF as $xf ) {
                    // 0 - num fmt, 1 - align, 2 - font, 3 - fill, 4 - font color, 5 - bgcolor
                    // fonts
                    $F_KEY = $xf[2].'-'.$xf[4];
                    if ( isset($F_KEYS[ $F_KEY ]) ) {
                        $F_ID = $F_KEYS[ $F_KEY ];
                    } else {
                        $F_ID = $F_KEYS[ $F_KEY ] = count( $FONTS );

                        $FONTS[] = '<font><name val="'.$this->defaultFont.'"/><family val="2"/>'
                            . ( $this->defaultFontSize ? '<sz val="'.$this->defaultFontSize.'"/>' : '' )
                            .( $xf[2] & self::F_BOLD ? '<b/>' : '')
                            .( $xf[2] & self::F_ITALIC ? '<i/>' : '')
                            .( $xf[2] & self::F_UNDERLINE ? '<u/>' : '')
                            .( $xf[2] & self::F_STRIKE ? '<strike/>' : '')
                            .( $xf[2] & self::F_HYPERLINK ? '<u/>' : '')
                            .( $xf[2] & self::F_COLOR ? '<color rgb="'.$xf[4].'"/>' : '')
                            .'</font>';
                    }
                    // fills
                    $FL_KEY = $xf[3].'-'.$xf[5];
                    if (isset($FL_KEYS[$FL_KEY])) {
                        $FL_ID = $FL_KEYS[ $FL_KEY ];
                    } else {
                        $FL_ID = $FL_KEYS[ $FL_KEY ] = count($FILLS);
                        $FILLS[] = '<fill><patternFill patternType="'
                            .( $xf[3] === 0 ? 'none' : '')
                            .( $xf[3] & self::FL_SOLID ? 'solid' : '')
                            .( $xf[3] & self::FL_MEDIUM_GRAY ? 'mediumGray' : '')
                            .( $xf[3] & self::FL_DARK_GRAY ? 'darkGray' : '')
                            .( $xf[3] & self::FL_LIGHT_GRAY ? 'lightGray' : '')
                            .( $xf[3] & self::FL_GRAY_125 ? 'gray125' : '')
                            .'"'
                            .( $xf[3] & self::FL_COLOR ? '><fgColor rgb="'.$xf[5].'"/><bgColor indexed="64"/></patternFill>' : ' />')
                            .'</fill>';
                    }
                    $align = ($xf[1] & self::A_LEFT ? ' horizontal="left"' : '')
                        .($xf[1] & self::A_RIGHT ? ' horizontal="right"' : '')
                        .($xf[1] & self::A_CENTER ? ' horizontal="center"' : '')
                        .($xf[1] & self::A_TOP ? ' vertical="top"' : '')
                        .($xf[1] & self::A_MIDDLE ? ' vertical="center"' : '')
                        .($xf[1] & self::A_BOTTOM ? ' vertical="bottom"' : '');

                    $XF[] = '<xf numFmtId="'.$xf[0].'" fontId="'.$F_ID.'" fillId="'.$FL_ID.'" borderId="0" xfId="0"'
                        .($xf[0] > 0 ? ' applyNumberFormat="1"' : '')
                        .($F_ID > 0 ? ' applyFont="1"' : '')
                        .($FL_ID > 0 ? ' applyFill="1"' : '')
                        .($align ? ' applyAlignment="1"><alignment'.$align . '/></xf>' : '/>');

                }
                // wrap collections
                array_unshift( $XF, '<cellXfs count="'.count($XF).'">');
                $XF[] = '</cellXfs>';
                array_unshift($FONTS, '<fonts count="'.count($FONTS).'">');
                $FONTS[] = '</fonts>';
                array_unshift($FILLS, '<fills count="'.count($FILLS).'">');
                $FILLS[] = '</fills>';

                $template = str_replace(['{FONTS}','{XF}','{FILLS}'], [implode("\r\n", $FONTS), implode("\r\n", $XF), implode("\r\n", $FILLS)], $template);
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            } else {
                $this->_writeEntry($fh, $cdrec, $cfilename, $template);
                $entries++;
            }
        }
        $before_cd = ftell($fh);
        fwrite($fh, $cdrec);

        // end of central dir
        fwrite($fh, $dirSignatureE);
        fwrite($fh, pack('v', 0)); // number of this disk
        fwrite($fh, pack('v', 0)); // number of the disk with the start of the central directory
        fwrite($fh, pack('v', $entries)); // total # of entries "on this disk"
        fwrite($fh, pack('v', $entries)); // total # of entries overall
        fwrite($fh, pack('V', mb_strlen($cdrec,'8bit')));     // size of central dir
        fwrite($fh, pack('V', $before_cd));         // offset to start of central dir
        fwrite($fh, pack('v', mb_strlen($zipComments,'8bit'))); // .zip file comment length
        fwrite($fh, $zipComments);

        return true;
    }

    protected function _writeEntry($fh, &$cdrec, $cfilename, $data) {
        $zipSignature = "\x50\x4b\x03\x04"; // local file header signature
        $dirSignature = "\x50\x4b\x01\x02"; // central dir header signature

        $e = [];
        $e['uncsize'] = mb_strlen($data, '8bit');

        // if data to compress is too small, just store it
        if($e['uncsize'] < 256){
            $e['comsize'] = $e['uncsize'];
            $e['vneeded'] = 10;
            $e['cmethod'] = 0;
            $zdata = $data;
        } else{ // otherwise, compress it
            $zdata = gzcompress($data);
            $zdata = substr(substr($zdata, 0, - 4 ), 2); // fix crc bug (thanks to Eric Mueller)
            $e['comsize'] = mb_strlen($zdata, '8bit');
            $e['vneeded'] = 10;
            $e['cmethod'] = 8;
        }

        $e['bitflag'] = 0;
        $e['crc_32']  = crc32($data);

        // Convert date and time to DOS Format, and set then
        $lastmod_timeS  = str_pad(decbin(date('s')>=32?date('s')-32:date('s')), 5, '0', STR_PAD_LEFT);
        $lastmod_timeM  = str_pad(decbin(date('i')), 6, '0', STR_PAD_LEFT);
        $lastmod_timeH  = str_pad(decbin(date('H')), 5, '0', STR_PAD_LEFT);
        $lastmod_dateD  = str_pad(decbin(date('d')), 5, '0', STR_PAD_LEFT);
        $lastmod_dateM  = str_pad(decbin(date('m')), 4, '0', STR_PAD_LEFT);
        $lastmod_dateY  = str_pad(decbin(date('Y')-1980), 7, '0', STR_PAD_LEFT);

        # echo "ModTime: $lastmod_timeS-$lastmod_timeM-$lastmod_timeH (".date("s H H").")\n";
        # echo "ModDate: $lastmod_dateD-$lastmod_dateM-$lastmod_dateY (".date("d m Y").")\n";
        $e['modtime'] = bindec("$lastmod_timeH$lastmod_timeM$lastmod_timeS");
        $e['moddate'] = bindec("$lastmod_dateY$lastmod_dateM$lastmod_dateD");

        $e['offset'] = ftell($fh);

        fwrite($fh, $zipSignature);
        fwrite($fh, pack('s', $e['vneeded'])); // version_needed
        fwrite($fh, pack('s', $e['bitflag'])); // general_bit_flag
        fwrite($fh, pack('s', $e['cmethod'])); // compression_method
        fwrite($fh, pack('s', $e['modtime'])); // lastmod_time
        fwrite($fh, pack('s', $e['moddate'])); // lastmod_date
        fwrite($fh, pack('V', $e['crc_32']));  // crc-32
        fwrite($fh, pack('I', $e['comsize'])); // compressed_size
        fwrite($fh, pack('I', $e['uncsize'])); // uncompressed_size
        fwrite($fh, pack('s', mb_strlen($cfilename, '8bit')));   // file_name_length
        fwrite($fh, pack('s', 0));  // extra_field_length
        fwrite($fh, $cfilename);    // file_name
        // ignoring extra_field
        fwrite($fh, $zdata);

        // Append it to central dir
        $e['external_attributes']  = (substr($cfilename, -1) === '/'&&!$zdata)?16:32; // Directory or file name
        $e['comments']             = '';

        $cdrec .= $dirSignature;
        $cdrec .= "\x0\x0";                  // version made by
        $cdrec .= pack('v', $e['vneeded']); // version needed to extract
        $cdrec .= "\x0\x0";                  // general bit flag
        $cdrec .= pack('v', $e['cmethod']); // compression method
        $cdrec .= pack('v', $e['modtime']); // lastmod time
        $cdrec .= pack('v', $e['moddate']); // lastmod date
        $cdrec .= pack('V', $e['crc_32']);  // crc32
        $cdrec .= pack('V', $e['comsize']); // compressed filesize
        $cdrec .= pack('V', $e['uncsize']); // uncompressed filesize
        $cdrec .= pack('v', mb_strlen($cfilename,'8bit')); // file name length
        $cdrec .= pack('v', 0);                // extra field length
        $cdrec .= pack('v', mb_strlen($e['comments'],'8bit')); // file comment length
        $cdrec .= pack('v', 0); // disk number start
        $cdrec .= pack('v', 0); // internal file attributes
        $cdrec .= pack('V', $e['external_attributes']); // internal file attributes
        $cdrec .= pack('V', $e['offset']); // relative offset of local header
        $cdrec .= $cfilename;
        $cdrec .= $e['comments'];
    }

    protected function _sheetToXML($idx, $template) {
        // locale floats fr_FR 1.234,56 -> 1234.56
        $_loc = setlocale(LC_NUMERIC, 0);
        setlocale(LC_NUMERIC,'C');
        $COLS = [];
        $ROWS = [];
        if ( count($this->sheets[$idx]['rows']) ) {
            $COLS[] = '<cols>';
            $CUR_ROW = 0;
            $COL = [];
            foreach( $this->sheets[$idx]['rows'] as $r ) {
                $CUR_ROW++;
                $row = '';
                $CUR_COL = 0;
                $RH = 0; // row height
                foreach( $r as $v ) {
                    $CUR_COL++;
                    if ( !isset($COL[ $CUR_COL ])) {
                        $COL[ $CUR_COL ] = 0;
                    }
                    $cname = $this->num2name($CUR_COL) . $CUR_ROW;

                    if ( $v === null || $v === '' ) {
                        $row .= '<c r="'.$cname.'"/>';
                        continue;
                    }

                    $ct = $cv = null;
                    $N = $A = $F = $FL = $C = $B = 0;

                    if ( is_string($v) ) {

                        if ( $v[0] === "\0" ) { // RAW value as string
                            $v = substr($v,1);
                            $vl = mb_strlen( $v );
                        } else {
                            if ( strpos( $v, '<' ) !== false ) { // tags?
                                if ( strpos( $v, '<b>' ) !== false ) {
                                    $F += self::F_BOLD;
                                }
                                if ( strpos( $v, '<i>' ) !== false ) {
                                    $F += self::F_ITALIC;
                                }
                                if ( strpos( $v, '<u>' ) !== false ) {
                                    $F += self::F_UNDERLINE;
                                }
                                if ( strpos( $v, '<s>' ) !== false ) {
                                    $F += self::F_STRIKE;
                                }
                                if ( preg_match('/<style([^>]+)>/', $v, $m ) ) {

                                    if ( preg_match('/ color="([^"]+)"/', $m[1], $m2) ) {

                                        $F += self::F_COLOR;
                                        $C = strlen($m2[1]) === 8 ? $m2[1] : ('FF' . ltrim($m2[1],'#'));
                                    }
                                    if ( preg_match('/ bgcolor="([^"]+)"/', $m[1], $m2) ) {
                                        $FL += self::FL_COLOR;
                                        $B = strlen($m2[1]) === 8 ? $m2[1] : ('FF' . ltrim($m2[1],'#'));
                                    }
                                    if ( preg_match('/ height="([^"]+)"/', $m[1], $m2) ) {
                                        $RH = $m2[1];
                                    }
                                }
                                if ( strpos( $v, '<left>' ) !== false ) {
                                    $A += self::A_LEFT;
                                }
                                if ( strpos( $v, '<center>' ) !== false ) {
                                    $A += self::A_CENTER;
                                }
                                if ( strpos( $v, '<right>' ) !== false ) {
                                    $A += self::A_RIGHT;
                                }
                                if ( strpos( $v, '<top>' ) !== false ) {
                                    $A += self::A_TOP;
                                }
                                if ( strpos( $v, '<middle>' ) !== false ) {
                                    $A += self::A_MIDDLE;
                                }
                                if ( strpos( $v, '<bottom>' ) !== false ) {
                                    $A += self::A_BOTTOM;
                                }
                                if ( preg_match( '/<a href="(https?:\/\/[^"]+)">(.*?)<\/a>/i', $v, $m ) ) {
                                    $h = explode( '#', $m[1] );
                                    $this->sheets[ $idx ]['hyperlinks'][] = ['ID' => 'rId' . ( count( $this->sheets[ $idx ]['hyperlinks'] ) + 1 ), 'R' => $cname, 'H' => $h[0], 'L' => isset( $h[1] ) ? $h[1] : ''];
                                    $F += self::F_HYPERLINK; // Hyperlink
                                }
                                if ( preg_match( '/<a href="(mailto?:[^"]+)">(.*?)<\/a>/i', $v, $m ) ) {
                                    $this->sheets[ $idx ]['hyperlinks'][] = ['ID' => 'rId' . ( count( $this->sheets[ $idx ]['hyperlinks'] ) + 1 ), 'R' => $cname, 'H' => $m[1], 'L' => ''];
                                    $F += self::F_HYPERLINK; // mailto hyperlink
                                }
                                $v = strip_tags( $v );
                            } // tags
                            $vl = mb_strlen( $v );
                            if ( $v === '0' || preg_match( '/^[-+]?[1-9]\d{0,14}$/', $v ) ) { // Integer as General
                                $cv = ltrim( $v, '+' );
                                if ( $vl > 10 ) {
                                    $N = self::N_INT; // [1] 0
                                }
                            } elseif ( preg_match( '/^[-+]?(0|[1-9]\d*)\.(\d+)$/', $v, $m ) ) {
                                $cv = ltrim( $v, '+' );
                                if ( strlen( $m[2] ) < 3 ) {
                                    $N = self::N_DEC;
                                }
                            } elseif ( preg_match( '/^([-+]?\d+)%$/', $v, $m ) ) {
                                $cv = round( $m[1] / 100, 2 );
                                $N = self::N_PERCENT_INT; // [9] 0%
                            } elseif ( preg_match( '/^([-+]?\d+\.\d+)%$/', $v, $m ) ) {
                                $cv = round( $m[1] / 100, 4 );
                                $N = self::N_PRECENT_DEC; // [10] 0.00%
                            } elseif ( preg_match( '/^(\d\d\d\d)-(\d\d)-(\d\d)$/', $v, $m ) ) {
                                $cv = $this->date2excel( $m[1], $m[2], $m[3] );
                                $N = self::N_DATE; // [14] mm-dd-yy
                            } elseif ( preg_match( '/^(\d\d)\/(\d\d)\/(\d\d\d\d)$/', $v, $m ) ) {
                                $cv = $this->date2excel( $m[3], $m[2], $m[1] );
                                $N = self::N_DATE; // [14] mm-dd-yy
                            } elseif ( preg_match( '/^(\d\d):(\d\d):(\d\d)$/', $v, $m ) ) {
                                $cv = $this->date2excel( 0, 0, 0, $m[1], $m[2], $m[3] );
                                $N = self::N_TIME; // time
                            } elseif ( preg_match( '/^(\d\d\d\d)-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)$/', $v, $m ) ) {
                                $cv = $this->date2excel( $m[1], $m[2], $m[3], $m[4], $m[5], $m[6] );
                                $N = ((int) $m[1] === 0) ? self::N_TIME : self::N_DATETIME; // [22] m/d/yy h:mm
                            } elseif ( preg_match( '/^(\d\d)\/(\d\d)\/(\d\d\d\d) (\d\d):(\d\d):(\d\d)$/', $v, $m ) ) {
                                $cv = $this->date2excel( $m[3], $m[2], $m[1], $m[4], $m[5], $m[6] );
                                $N = self::N_DATETIME; // [22] m/d/yy h:mm
                            } elseif ( preg_match( '/^[0-9+-.]+$/', $v ) ) { // Long ?
                                $A += self::A_RIGHT;
                            } elseif ( preg_match( '/^https?:\/\/\S+$/i', $v ) ) {
                                $h = explode( '#', $v );
                                $this->sheets[ $idx ]['hyperlinks'][] = ['ID' => 'rId' . ( count( $this->sheets[ $idx ]['hyperlinks'] ) + 1 ), 'R' => $cname, 'H' => $h[0], 'L' => isset( $h[1] ) ? $h[1] : ''];
                                $F += self::F_HYPERLINK; // Hyperlink
                            } elseif ( preg_match( "/^[a-zA-Z0-9_\.\-]+@([a-zA-Z0-9][a-zA-Z0-9\-]*\.)+[a-zA-Z]{2,}$/", $v ) ) {
                                $this->sheets[ $idx ]['hyperlinks'][] = ['ID' => 'rId' . ( count( $this->sheets[ $idx ]['hyperlinks'] ) + 1 ), 'R' => $cname, 'H' => 'mailto:' . $v, 'L' => ''];
                                $F += self::F_HYPERLINK; // Hyperlink
                            }
                            if ( ($N === self::N_DATE || $N === self::N_DATETIME) && $cv < 0 ) {
                                $cv = null;
                                $N = 0;
                            }
                        }
                        if ( !$cv) {

                            $v = $this->esc( $v );

                            if ( mb_strlen( $v ) > 160 ) {
                                $ct = 'inlineStr';
                                $cv = $v;
                            } else {
                                $ct = 's'; // shared string
                                $cv = false;
                                $skey = '~' . $v;
                                if ( isset( $this->SI_KEYS[ $skey ] ) ) {
                                    $cv = $this->SI_KEYS[ $skey ];
                                }
                                if ( $cv === false ) {
                                    $this->SI[] = $v;
                                    $cv = count( $this->SI ) - 1;
                                    $this->SI_KEYS[ $skey ] = $cv;
                                }
                            }
                        }
                    } elseif ( is_int( $v ) ) {
                        $vl = mb_strlen( (string) $v );
                        $cv = $v;
                    } elseif ( is_float( $v ) ) {
                        $vl = mb_strlen( (string) $v );
                        $cv = $v;
                    } elseif ( $v instanceof \DateTime ) {
                        $vl = 16;
                        $cv = $this->date2excel($v->format('Y'), $v->format('m'), $v->format('d'), $v->format('H'), $v->format('i'), $v->format('s'));
                        $N = self::N_DATETIME; // [22] m/d/yy h:mm
                    } else {
                        continue;
                    }

                    $COL[ $CUR_COL ] = max( $vl, $COL[ $CUR_COL ] );

                    $cs = 0;

                    if ( $N + $A + $F + $FL > 0 ) {

                        if ( $FL === self::FL_COLOR ) {
                            $FL += self::FL_SOLID;
                        }
                        if ( ($F & self::F_HYPERLINK) && !($F & self::F_COLOR)) {
                            $F += self::F_COLOR;
                            $C = 'FF0563C1';
                        }

                        $XF_KEY = $N . '-' . $A  . '-' . $F. '-'. $FL . '-' . $C . '-' . $B;
//                        echo $cname .'='.$XF_KEY.PHP_EOL;
                        if ( isset( $this->XF_KEYS[ $XF_KEY ] ) ) {
                            $cs = $this->XF_KEYS[ $XF_KEY ];
                        }
                        if ( $cs === 0 ) {
                            $cs = count( $this->XF );
                            $this->XF_KEYS[ $XF_KEY ] = $cs;
                            $this->XF[] = [$N, $A, $F, $FL, $C, $B];
                        }
                    }

                    $row .= '<c r="' . $cname . '"' . ($ct ? ' t="' . $ct . '"' : '') . ($cs ? ' s="' . $cs . '"' : '') . '>'
                            . ($ct === 'inlineStr' ? '<is><t>' . $cv . '</t></is>' : '<v>' . $cv . '</v>') . "</c>\r\n";
                }
                $ROWS[] = '<row r="'.$CUR_ROW.'"'.($RH ? ' customHeight="1" ht="'.$RH.'"' : '').'>'.$row . "</row>";
            }
            foreach ( $COL as $k => $max ) {
                $COLS[] = '<col min="'.$k.'" max="'.$k.'" width="'.min( $max+1, 60).'" />';
            }
            $COLS[] = '</cols>';
            $REF = 'A1:'.$this->num2name(count($COL)) . $CUR_ROW;
        } else {
            $ROWS[] = '<row r="1"><c r="A1" t="s"><v>0</v></c></row>';
            $REF = 'A1:A1';
        }

        $MERGECELLS = [];
        if ( count($this->sheets[$idx]['mergecells']) ) {
            $MERGECELLS[] = '';
            $MERGECELLS[] = '<mergeCells count="'.count($this->sheets[$idx]['mergecells']).'">';
            foreach( $this->sheets[$idx]['mergecells'] as $m ) {
                $MERGECELLS[] = '<mergeCell ref="'.$m.'"/>';
            }
            $MERGECELLS[] = '</mergeCells>';
        }

        $HYPERLINKS = [];
        if ( count( $this->sheets[$idx]['hyperlinks']) ) {
            $HYPERLINKS[] = '<hyperlinks>';
            foreach ( $this->sheets[$idx]['hyperlinks'] as $h ) {
                $HYPERLINKS[] = '<hyperlink ref="' . $h['R'] . '" r:id="' . $h['ID'] . '" location="' . $this->esc( $h['L'] ) . '" display="' . $this->esc( $h['H'] . ( $h['L'] ? ' - ' . $h['L'] : '' ) ) . '" />';
            }
            $HYPERLINKS[] = '</hyperlinks>';
        }
        //restore locale
        setlocale(LC_NUMERIC, $_loc);

        return str_replace(['{REF}','{COLS}','{ROWS}','{MERGECELLS}','{HYPERLINKS}'],
            [ $REF, implode("\r\n", $COLS), implode("\r\n",$ROWS), implode("\r\n", $MERGECELLS), implode("\r\n", $HYPERLINKS) ],
            $template );
    }

    public function num2name($num) {
        $numeric = ($num - 1) % 26;
        $letter  = chr( 65 + $numeric );
        $num2    = (int) ( ($num-1) / 26 );
        if ( $num2 > 0 ) {
            return $this->num2name( $num2 ) . $letter;
        }
        return $letter;
    }

    public function date2excel($year, $month, $day, $hours=0, $minutes=0, $seconds=0) {

        $excelTime = (($hours * 3600) + ($minutes * 60) + $seconds) / 86400;

        if ( (int) $year === 0 ) {
            return $excelTime;
        }

        // self::CALENDAR_WINDOWS_1900
        $excel1900isLeapYear = True;
        if (($year === 1900) && ($month <= 2)) { $excel1900isLeapYear = False; }
        $myExcelBaseDate = 2415020;

        // Julian base date Adjustment
        if ($month > 2) {
            $month -= 3;
        } else {
            $month += 9;
            --$year;
        }
        $century = substr($year,0,2);
        $decade = substr($year,2,2);
        //    Calculate the Julian Date, then subtract the Excel base date (JD 2415020 = 31-Dec-1899 Giving Excel Date of 0)
        $excelDate = floor((146097 * $century) / 4) + floor((1461 * $decade) / 4) + floor((153 * $month + 2) / 5) + $day + 1721119 - $myExcelBaseDate + $excel1900isLeapYear;

        return (float) $excelDate + $excelTime;
    }
    public function setDefaultFont( $name ) {
        $this->defaultFont = $name;
        return $this;
    }
    public function setDefaultFontSize( $size ) {
        $this->defaultFontSize = $size;
        return $this;
    }
    public function mergeCells( $range ) {
        $this->sheets[$this->curSheet]['mergecells'][] = $range;
        return $this;
    }
    public function esc( $str ) {
        // XML UTF-8: #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
        // but we use fast version
        return str_replace( ['&', '<', '>', "\x00","\x03","\x0B"], ['&amp;', '&lt;', '&gt;', '', '', ''], $str );
    }
}
