820 lines
21 KiB
PHP
820 lines
21 KiB
PHP
<?php
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/**
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* This file includes UFPDF which adds Unicode support to FPDF.
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*
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* @author Steven Wittens
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* @author Andrea Rossato
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* @package PDF
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*/
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/*******************************************************************************
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* Software: UFPDF, Unicode Free PDF generator *
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* Version: 0.1 *
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* based on FPDF 1.52 by Olivier PLATHEY *
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* Date: 2004-09-01 *
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* Author: Steven Wittens <steven@acko.net> *
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* License: GPL *
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* *
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* UFPDF is a modification of FPDF to support Unicode through UTF-8. *
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* *
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* This file includes modifications from Andrea Rossato which fix line breaking *
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* in Write()/MultiCell(). *
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* *
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*******************************************************************************/
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if(!class_exists('UFPDF'))
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{
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define('UFPDF_VERSION','0.1');
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/**
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* Main UFPDF class for creating Unicode PDF documents
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*
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* @package PDF
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* @see FPDF
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*/
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class UFPDF extends FPDF
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{
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/*******************************************************************************
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* *
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* Public methods *
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* *
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*******************************************************************************/
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function __construct($orientation='P',$unit='mm',$format='A4')
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{
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parent::__construct($orientation, $unit, $format);
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}
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function GetStringWidth($s)
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{
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//Get width of a string in the current font
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$s = (string)$s;
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$codepoints=$this->utf8_to_codepoints(trim($s));
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$cw=&$this->CurrentFont['cw'];
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$w=0;
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foreach($codepoints as $cp) {
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if (isset($cw[$cp])) {
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$w+=$cw[$cp];
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}
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else if (isset($cw[ord($cp)])) {
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$w+=$cw[ord($cp)];
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}
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else if (isset($cw[chr($cp)])) {
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$w+=$cw[chr($cp)];
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}
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//-- adjust width for incorrect hebrew chars
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if ($cp>1480 && $cp < 1550) $w -= $cw[$cp]/1.8;
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}
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return $w*$this->FontSize/1000;
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}
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function AddFont($family,$style='',$file='')
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{
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//Add a TrueType or Type1 font
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$family=strtolower($family);
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if($family=='arial')
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$family='helvetica';
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$style=strtoupper($style);
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if($style=='IB')
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$style='BI';
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if(isset($this->fonts[$family.$style]))
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$this->Error('Font already added: '.$family.' '.$style);
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if($file=='')
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$file=str_replace(' ','',$family).strtolower($style).'.php';
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if(defined('FPDF_FONTPATH'))
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$file=FPDF_FONTPATH.$file;
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include($file);
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if(!isset($name))
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$this->Error('Could not include font definition file');
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$i=count($this->fonts)+1;
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$this->fonts[$family.$style]=array('i'=>$i,'type'=>$type,'name'=>$name,'desc'=>$desc,'up'=>$up,'ut'=>$ut,'cw'=>$cw,'file'=>$file,'ctg'=>$ctg);
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if($file)
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{
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if($type=='TrueTypeUnicode')
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$this->FontFiles[$file]=array('length1'=>$originalsize);
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else
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$this->FontFiles[$file]=array('length1'=>$size1,'length2'=>$size2);
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}
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}
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function Text($x,$y,$txt)
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{
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//Output a string
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$s=sprintf('BT %.2f %.2f Td %s Tj ET',$x*$this->k,($this->h-$y)*$this->k,$this->_escapetext($txt));
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if($this->underline and $txt!='')
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$s.=' '.$this->_dounderlineU($x,$y,$this->GetStringWidth($txt),$txt);
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if($this->ColorFlag)
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$s='q '.$this->TextColor.' '.$s.' Q';
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$this->_out($s);
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}
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function AcceptPageBreak()
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{
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//Accept automatic page break or not
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return $this->AutoPageBreak;
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}
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function Cell($w,$h=0,$txt='',$border=0,$ln=0,$align='J',$fill=0,$link='')
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{
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//Output a cell
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$k=$this->k;
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if($this->y+$h>$this->PageBreakTrigger and !$this->InFooter and $this->AcceptPageBreak())
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{
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//Automatic page break
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$x=$this->x;
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$ws=$this->ws;
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if($ws>0)
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{
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$this->ws=0;
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$this->_out('0 Tw');
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}
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$this->AddPage($this->CurOrientation, $this->CurPageSize);
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$this->x=$x;
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if($ws>0)
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{
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$this->ws=$ws;
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$this->_out(sprintf('%.3f Tw',$ws*$k));
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}
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}
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if($w==0)
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$w=$this->w-$this->rMargin-$this->x;
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$s='';
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if($fill==1 or $border==1)
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{
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if($fill==1)
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$op=($border==1) ? 'B' : 'f';
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else
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$op='S';
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$s=sprintf('%.2f %.2f %.2f %.2f re %s ',$this->x*$k,($this->h-$this->y)*$k,$w*$k,-$h*$k,$op);
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}
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if(is_string($border))
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{
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$x=$this->x;
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$y=$this->y;
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if(is_int(strpos($border,'L')))
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$s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-$y)*$k,$x*$k,($this->h-($y+$h))*$k);
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if(is_int(strpos($border,'T')))
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$s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-$y)*$k);
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if(is_int(strpos($border,'R')))
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$s.=sprintf('%.2f %.2f m %.2f %.2f l S ',($x+$w)*$k,($this->h-$y)*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
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if(is_int(strpos($border,'B')))
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$s.=sprintf('%.2f %.2f m %.2f %.2f l S ',$x*$k,($this->h-($y+$h))*$k,($x+$w)*$k,($this->h-($y+$h))*$k);
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}
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if($txt!='')
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{
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$width = $this->GetStringWidth($txt);
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if($align=='R')
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$dx=$w-$this->cMargin-$width;
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elseif($align=='C')
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$dx=($w-$width)/2;
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else
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$dx=$this->cMargin;
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if($this->ColorFlag)
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$s.='q '.$this->TextColor.' ';
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$txtstring=$this->_escapetext($txt);
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$s.=sprintf('BT %.2f %.2f Td %s Tj ET',($this->x+$dx)*$k,($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k,$txtstring);
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if($this->underline)
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$s.=' '.$this->_dounderlineU($this->x+$dx,$this->y+.5*$h+.3*$this->FontSize,$width,$txt);
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if($this->ColorFlag)
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$s.=' Q';
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if($link)
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$this->Link($this->x+$dx,$this->y+.5*$h-.5*$this->FontSize,$width,$this->FontSize,$link);
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}
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if($s)
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$this->_out($s);
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$this->lasth=$h;
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if($ln>0)
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{
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//Go to next line
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$this->y+=$h;
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if($ln==1)
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$this->x=$this->lMargin;
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}
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else
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$this->x+=$w;
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}
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function MultiCell($w,$h,$txt,$border=0,$align='J',$fill=0)
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{
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//Output text with automatic or explicit line breaks
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$cw=&$this->CurrentFont['cw'];
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$cp=$this->utf8_to_codepoints(trim($txt));
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//print_r($cp);
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if($w==0)
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$w=$this->w-$this->rMargin-$this->x;
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$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
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//echo $w;
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$s=str_replace("\r",'',$txt);
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$nb=$this->strlen($s);
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if($nb>0 and $s[$nb-1]=="\n")
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$nb--;
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$b=0;
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if($border)
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{
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if($border==1)
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{
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$border='LTRB';
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$b='LRT';
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$b2='LR';
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}
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else
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{
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$b2='';
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if(is_int(strpos($border,'L')))
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$b2.='L';
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if(is_int(strpos($border,'R')))
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$b2.='R';
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$b=is_int(strpos($border,'T')) ? $b2.'T' : $b2;
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}
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}
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$sep=-1;
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$i=0;
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$j=0;
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$l=0;
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$ns=0;
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$nl=1;
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$char = 0;
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while($i<$nb)
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{
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//Get next character
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$c = $this->code2utf($cp[$i]);
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if($c=="\n")
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{
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//Explicit line break
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if($this->ws>0)
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{
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$this->ws=0;
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$this->_out('0 Tw');
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}
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$i-$j,"UTF-8"),$b,2,$align,$fill);
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$i++;
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$sep=-1;
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$j=$i;
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$l=0;
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$ns=0;
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$nl++;
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if($border and $nl==2)
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$b=$b2;
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continue;
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}
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if($c==' ')
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{
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$sep=$i;
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$ls=$l;
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$ns++;
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}
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if (isset($cw[$cp[$i]])) {
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$l += $cw[$cp[$i]];
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}
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if($l>$wmax)
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{
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//Automatic line break
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if($sep==-1)
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{
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if($i==$j)
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$i++;
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if($this->ws>0)
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{
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$this->ws=0;
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$this->_out('0 Tw');
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}
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$i-$j,"UTF-8"),$b,2,$align,$fill);
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}
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else
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{
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if($align=='J')
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{
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$len_ligne = $this->GetStringWidth($this->utf8_substr($cp,$j,$sep-$j,"UTF-8"));
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$nb_carac = $this->strlen($this->utf8_substr($cp,$j,$sep-$j,"UTF-8"));
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$ecart = (($w-2) - $len_ligne) / $nb_carac;
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$this->_out(sprintf('BT %.3f Tc ET',$ecart*$this->k));
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//$this->ws=($ns>1) ? ($wmax-$ls)/1000*$this->FontSize/($ns-1) : 0;
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//$this->_out(sprintf('%.3f Tw',$this->ws*$this->k));
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//echo ($wmax-$ls)/1000*$this->FontSize/($ns-1)."=".($wmax-$ls)."<br>"; //$andrea = sprintf('%.3f Tw',$this->ws*$this->k);
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}
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$sep-$j,"UTF-8"),$b,2,$align,$fill);
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$i=$sep+1;
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}
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$sep=-1;
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$j=$i;
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$l=0;
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$ns=0;
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$nl++;
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if($border and $nl==2)
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$b=$b2;
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}
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else
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$i++;
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}
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//Last chunk
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if($this->ws>0)
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{
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$this->ws=0;
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$this->_out('0 Tw');
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}
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if($border and is_int(strpos($border,'B')))
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$b.='B';
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$i-$j,"UTF-8"),$b,2,$align,$fill);
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$this->x=$this->lMargin;
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}
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function Write($h,$txt,$link='')
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{
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//Output text in flowing mode
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$cw=&$this->CurrentFont['cw'];
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$cp=$this->utf8_to_codepoints(trim($txt));
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$w=$this->w-$this->rMargin-$this->x;
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$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
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$s=str_replace("\r",'',$txt);
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$nb=$this->strlen($s);
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$sep=-1;
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$i=0;
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$j=0;
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$l=0;
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$nl=1;
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while($i<$nb)
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{
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//Get next character
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$c=$s{$i};
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$charw = $cw[$cp[$i]];
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if($c=="\n")
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{
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//Explicit line break
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$i-$j,"UTF-8"),0,2,'',0,$link);
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$i++;
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$sep=-1;
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$j=$i;
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$l=0;
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if($nl==1)
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{
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$this->x=$this->lMargin;
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$w=$this->w-$this->rMargin-$this->x;
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$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
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}
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$nl++;
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continue;
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}
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if($c==' ')
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$sep=$i;
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$l+=$charw;
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if($l>$wmax)
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{
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//Automatic line break
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if($sep==-1)
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{
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if($this->x>$this->lMargin)
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{
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//Move to next line
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$this->x=$this->lMargin;
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$this->y+=$h;
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$w=$this->w-$this->rMargin-$this->x;
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$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
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$i++;
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$nl++;
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continue;
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}
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if($i==$j)
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$i++;
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$i-$j,"UTF-8"),0,2,'',0,$link);
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}
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else
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{
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$this->Cell($w,$h,$this->utf8_substr($cp,$j,$sep-$j,"UTF-8"),0,2,'',0,$link);
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$i=$sep+1;
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}
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$sep=-1;
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$j=$i;
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$l=0;
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if($nl==1)
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{
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$this->x=$this->lMargin;
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$w=$this->w-$this->rMargin-$this->x;
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$wmax=($w-2*$this->cMargin)*1000/$this->FontSize;
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}
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$nl++;
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}
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else
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$i++;
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}
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//Last chunk
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if($i!=$j)
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$this->Cell($l/1000*$this->FontSize,$h,$this->utf8_substr($cp,$j),0,0,'',0,$link);
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}
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function AliasNbPages($alias='{nb}')
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{
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//Define an alias for total number of pages
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$this->AliasNbPages=$this->utf8_to_utf16be($alias,false);
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}
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/*******************************************************************************
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* *
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* Protected methods *
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* *
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*******************************************************************************/
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function _puttruetypeunicode($font) {
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//Type0 Font
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$this->_newobj();
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$this->_out('<</Type /Font');
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$this->_out('/Subtype /Type0');
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$this->_out('/BaseFont /'. $font['name'] );
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$this->_out('/Encoding /Identity-H');
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$this->_out('/DescendantFonts ['. ($this->n + 1) .' 0 R]');
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$this->_out('>>');
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$this->_out('endobj');
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//CIDFont
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$this->_newobj();
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$this->_out('<</Type /Font');
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$this->_out('/Subtype /CIDFontType2');
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$this->_out('/BaseFont /'. $font['name']);
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$this->_out('/CIDSystemInfo <</Registry (Adobe) /Ordering (UCS) /Supplement 0>>');
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$this->_out('/FontDescriptor '. ($this->n + 1) .' 0 R');
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$c = 0;
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$widths = "";
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foreach ($font['cw'] as $i => $w) {
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$widths .= $i .' ['. $w.'] ';
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}
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$this->_out('/W ['. $widths .']');
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$this->_out('/CIDToGIDMap '. ($this->n + 2) .' 0 R');
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$this->_out('>>');
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$this->_out('endobj');
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//Font descriptor
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$this->_newobj();
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$this->_out('<</Type /FontDescriptor');
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$this->_out('/FontName /'.$font['name']);
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$s = "";
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foreach ($font['desc'] as $k => $v) {
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$s .= ' /'. $k .' '. $v;
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}
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if ($font['file']) {
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$s .= ' /FontFile2 '. $this->FontFiles[$font['file']]['n'] .' 0 R';
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}
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$this->_out($s);
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$this->_out('>>');
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$this->_out('endobj');
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//Embed CIDToGIDMap
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$this->_newobj();
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if(defined('FPDF_FONTPATH'))
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$file=FPDF_FONTPATH.$font['ctg'];
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else
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$file=$font['ctg'];
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$size=filesize($file);
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if(!$size)
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$this->Error('Font file not found');
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$this->_out('<</Length '.$size);
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if(substr($file,-2) == '.z')
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$this->_out('/Filter /FlateDecode');
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$this->_out('>>');
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$f = fopen($file,'rb');
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$this->_putstream(fread($f,$size));
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fclose($f);
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$this->_out('endobj');
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}
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function _dounderlineU($x,$y,$width,$txt)
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{
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//Underline text
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$up=$this->CurrentFont['up'];
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$ut=$this->CurrentFont['ut'];
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$w=$width+$this->ws*substr_count($txt,' ');
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return sprintf('%.2f %.2f %.2f %.2f re f',$x*$this->k,($this->h-($y-$up/1000*$this->FontSize))*$this->k,$w*$this->k,-$ut/1000*$this->FontSizePt);
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}
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function _textstring($s)
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|
{
|
|
//Convert to UTF-16BE
|
|
$s = $this->utf8_to_utf16be($s);
|
|
//Escape necessary characters
|
|
return '('. strtr($s, array(')' => '\\)', '(' => '\\(', '\\' => '\\\\')) .')';
|
|
}
|
|
|
|
function _escapetext($s)
|
|
{
|
|
//Convert to UTF-16BE
|
|
$s = $this->utf8_to_utf16be($s, false);
|
|
//Escape necessary characters
|
|
return '('. strtr($s, array(')' => '\\)', '(' => '\\(', '\\' => '\\\\')) .')';
|
|
}
|
|
|
|
function _putinfo()
|
|
{
|
|
$this->_out('/Producer '.$this->_textstring('UFPDF '. UFPDF_VERSION));
|
|
if(!empty($this->title))
|
|
$this->_out('/Title '.$this->_textstring($this->title));
|
|
if(!empty($this->subject))
|
|
$this->_out('/Subject '.$this->_textstring($this->subject));
|
|
if(!empty($this->author))
|
|
$this->_out('/Author '.$this->_textstring($this->author));
|
|
if(!empty($this->keywords))
|
|
$this->_out('/Keywords '.$this->_textstring($this->keywords));
|
|
if(!empty($this->creator))
|
|
$this->_out('/Creator '.$this->_textstring($this->creator));
|
|
$this->_out('/CreationDate '.$this->_textstring('D:'.date('YmdHis')));
|
|
}
|
|
|
|
function _putpages()
|
|
{
|
|
$nb=$this->page;
|
|
if(!empty($this->AliasNbPages))
|
|
{
|
|
$nbstr = $this->utf8_to_utf16be($nb,false);
|
|
//Replace number of pages
|
|
for($n=1;$n<=$nb;$n++) {
|
|
$this->pages[$n]=str_replace($this->AliasNbPages,$nbstr,$this->pages[$n]);
|
|
}
|
|
}
|
|
if($this->DefOrientation=='P')
|
|
{
|
|
$wPt=$this->DefPageSize[0]*$this->k;
|
|
$hPt=$this->DefPageSize[1]*$this->k;
|
|
}
|
|
else
|
|
{
|
|
$wPt=$this->DefPageSize[1]*$this->k;
|
|
$hPt=$this->DefPageSize[0]*$this->k;
|
|
}
|
|
$filter=($this->compress) ? '/Filter /FlateDecode ' : '';
|
|
for($n=1;$n<=$nb;$n++)
|
|
{
|
|
//Page
|
|
$this->_newobj();
|
|
$this->_out('<</Type /Page');
|
|
$this->_out('/Parent 1 0 R');
|
|
if(isset($this->PageSizes[$n]))
|
|
$this->_out(sprintf('/MediaBox [0 0 %.2F %.2F]',$this->PageSizes[$n][0],$this->PageSizes[$n][1]));
|
|
$this->_out('/Resources 2 0 R');
|
|
if(isset($this->PageLinks[$n]))
|
|
{
|
|
//Links
|
|
$annots='/Annots [';
|
|
foreach($this->PageLinks[$n] as $pl)
|
|
{
|
|
$rect=sprintf('%.2f %.2f %.2f %.2f',$pl[0],$pl[1],$pl[0]+$pl[2],$pl[1]-$pl[3]);
|
|
$annots.='<</Type /Annot /Subtype /Link /Rect ['.$rect.'] /Border [0 0 0] ';
|
|
if(is_string($pl[4]))
|
|
$annots.='/A <</S /URI /URI '.$this->_textstring($pl[4]).'>>>>';
|
|
else
|
|
{
|
|
$l=$this->links[$pl[4]];
|
|
$h=isset($this->PageSizes[$l[0]]) ? $this->PageSizes[$l[0]][1] : $hPt;
|
|
$annots.=sprintf('/Dest [%d 0 R /XYZ 0 %.2F null]>>',1+2*$l[0],$h-$l[1]*$this->k);
|
|
}
|
|
}
|
|
$this->_out($annots.']');
|
|
}
|
|
$this->_out('/Contents '.($this->n+1).' 0 R>>');
|
|
$this->_out('endobj');
|
|
//Page content
|
|
$p=($this->compress) ? gzcompress($this->pages[$n]) : $this->pages[$n];
|
|
$this->_newobj();
|
|
$this->_out('<<'.$filter.'/Length '.strlen($p).'>>');
|
|
$this->_putstream($p);
|
|
$this->_out('endobj');
|
|
}
|
|
//Pages root
|
|
$this->offsets[1]=strlen($this->buffer);
|
|
$this->_out('1 0 obj');
|
|
$this->_out('<</Type /Pages');
|
|
$kids='/Kids [';
|
|
for($i=0;$i<$nb;$i++)
|
|
$kids.=(3+2*$i).' 0 R ';
|
|
$this->_out($kids.']');
|
|
$this->_out('/Count '.$nb);
|
|
$this->_out(sprintf('/MediaBox [0 0 %.2f %.2f]',$wPt,$hPt));
|
|
$this->_out('>>');
|
|
$this->_out('endobj');
|
|
}
|
|
|
|
// UTF-8 to UTF-16BE conversion.
|
|
// Correctly handles all illegal UTF-8 sequences.
|
|
function utf8_to_utf16be(&$txt, $bom = true) {
|
|
$l = strlen($txt);
|
|
$txt .= " ";
|
|
$out = $bom ? "\xFE\xFF" : '';
|
|
for ($i = 0; $i < $l; ++$i) {
|
|
$c = ord($txt{$i});
|
|
// ASCII
|
|
if ($c < 0x80) {
|
|
$out .= "\x00". $txt{$i};
|
|
}
|
|
// Lost continuation byte
|
|
else if ($c < 0xC0) {
|
|
$out .= "\xFF\xFD";
|
|
continue;
|
|
}
|
|
// Multibyte sequence leading byte
|
|
else {
|
|
if ($c < 0xE0) {
|
|
$s = 2;
|
|
}
|
|
else if ($c < 0xF0) {
|
|
$s = 3;
|
|
}
|
|
else if ($c < 0xF8) {
|
|
$s = 4;
|
|
}
|
|
// 5/6 byte sequences not possible for Unicode.
|
|
else {
|
|
$out .= "\xFF\xFD";
|
|
while (ord($txt{$i + 1}) >= 0x80 && ord($txt{$i + 1}) < 0xC0) { ++$i; }
|
|
continue;
|
|
}
|
|
|
|
$q = array($c);
|
|
// Fetch rest of sequence
|
|
while (ord($txt{$i + 1}) >= 0x80 && ord($txt{$i + 1}) < 0xC0) { ++$i; $q[] = ord($txt{$i}); }
|
|
|
|
// Check length
|
|
if (count($q) != $s) {
|
|
$out .= "\xFF\xFD";
|
|
continue;
|
|
}
|
|
|
|
switch ($s) {
|
|
case 2:
|
|
$cp = (($q[0] ^ 0xC0) << 6) | ($q[1] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x80) {
|
|
$out .= "\xFF\xFD";
|
|
}
|
|
else {
|
|
$out .= chr($cp >> 8);
|
|
$out .= chr($cp & 0xFF);
|
|
}
|
|
continue;
|
|
|
|
case 3:
|
|
$cp = (($q[0] ^ 0xE0) << 12) | (($q[1] ^ 0x80) << 6) | ($q[2] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x800) {
|
|
$out .= "\xFF\xFD";
|
|
}
|
|
// Check for UTF-8 encoded surrogates (caused by a bad UTF-8 encoder)
|
|
else if ($c > 0xD800 && $c < 0xDFFF) {
|
|
$out .= "\xFF\xFD";
|
|
}
|
|
else {
|
|
$out .= chr($cp >> 8);
|
|
$out .= chr($cp & 0xFF);
|
|
}
|
|
continue;
|
|
|
|
case 4:
|
|
$cp = (($q[0] ^ 0xF0) << 18) | (($q[1] ^ 0x80) << 12) | (($q[2] ^ 0x80) << 6) | ($q[3] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x10000) {
|
|
$out .= "\xFF\xFD";
|
|
}
|
|
// Outside of the Unicode range
|
|
else if ($cp >= 0x10FFFF) {
|
|
$out .= "\xFF\xFD";
|
|
}
|
|
else {
|
|
// Use surrogates
|
|
$cp -= 0x10000;
|
|
$s1 = 0xD800 | ($cp >> 10);
|
|
$s2 = 0xDC00 | ($cp & 0x3FF);
|
|
|
|
$out .= chr($s1 >> 8);
|
|
$out .= chr($s1 & 0xFF);
|
|
$out .= chr($s2 >> 8);
|
|
$out .= chr($s2 & 0xFF);
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
function code2utf($num){
|
|
if($num<128)return chr($num);
|
|
if($num<2048)return chr(($num>>6)+192).chr(($num&63)+128);
|
|
if($num<65536)return chr(($num>>12)+224).chr((($num>>6)&63)+128).chr(($num&63)+128);
|
|
if($num<2097152)return chr(($num>>18)+240).chr((($num>>12)&63)+128).chr((($num>>6)&63)+128). chr(($num&63)+128);
|
|
return '';
|
|
}
|
|
|
|
function strlen($s) {
|
|
return strlen(utf8_decode($s));
|
|
}
|
|
|
|
function utf8_substr($str,$start)
|
|
{
|
|
$rs = '';
|
|
if( func_num_args() >= 3 ) {
|
|
$end = func_get_arg( 2 );
|
|
for ($i=$start; $i < ($start+$end); $i++)
|
|
$rs .= $this->code2utf($str[$i]);
|
|
|
|
} else {
|
|
for ($i=$start; $i < count($str); $i++)
|
|
$rs .= $this->code2utf($str[$i]);
|
|
}
|
|
|
|
return $rs;
|
|
}
|
|
|
|
// UTF-8 to codepoint array conversion.
|
|
// Correctly handles all illegal UTF-8 sequences.
|
|
function utf8_to_codepoints($txt) {
|
|
$l = strlen($txt);
|
|
$txt .= " ";
|
|
$out = array();
|
|
for ($i = 0; $i < $l; ++$i) {
|
|
$c = ord($txt{$i});
|
|
// ASCII
|
|
if ($c < 0x80) {
|
|
$out[] = ord($txt{$i});
|
|
}
|
|
// Lost continuation byte
|
|
else if ($c < 0xC0) {
|
|
$out[] = 0xFFFD;
|
|
continue;
|
|
}
|
|
// Multibyte sequence leading byte
|
|
else {
|
|
if ($c < 0xE0) {
|
|
$s = 2;
|
|
}
|
|
else if ($c < 0xF0) {
|
|
$s = 3;
|
|
}
|
|
else if ($c < 0xF8) {
|
|
$s = 4;
|
|
}
|
|
// 5/6 byte sequences not possible for Unicode.
|
|
else {
|
|
$out[] = 0xFFFD;
|
|
while (ord($txt{$i + 1}) >= 0x80 && ord($txt{$i + 1}) < 0xC0) { ++$i; }
|
|
continue;
|
|
}
|
|
|
|
$q = array($c);
|
|
// Fetch rest of sequence
|
|
while (ord($txt{$i + 1}) >= 0x80 && ord($txt{$i + 1}) < 0xC0) { ++$i; $q[] = ord($txt{$i}); }
|
|
|
|
// Check length
|
|
if (count($q) != $s) {
|
|
$out[] = 0xFFFD;
|
|
continue;
|
|
}
|
|
|
|
switch ($s) {
|
|
case 2:
|
|
$cp = (($q[0] ^ 0xC0) << 6) | ($q[1] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x80) {
|
|
$out[] = 0xFFFD;
|
|
}
|
|
else {
|
|
$out[] = $cp;
|
|
}
|
|
continue;
|
|
|
|
case 3:
|
|
$cp = (($q[0] ^ 0xE0) << 12) | (($q[1] ^ 0x80) << 6) | ($q[2] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x800) {
|
|
$out[] = 0xFFFD;
|
|
}
|
|
// Check for UTF-8 encoded surrogates (caused by a bad UTF-8 encoder)
|
|
else if ($c > 0xD800 && $c < 0xDFFF) {
|
|
$out[] = 0xFFFD;
|
|
}
|
|
else {
|
|
$out[] = $cp;
|
|
}
|
|
continue;
|
|
|
|
case 4:
|
|
$cp = (($q[0] ^ 0xF0) << 18) | (($q[1] ^ 0x80) << 12) | (($q[2] ^ 0x80) << 6) | ($q[3] ^ 0x80);
|
|
// Overlong sequence
|
|
if ($cp < 0x10000) {
|
|
$out[] = 0xFFFD;
|
|
}
|
|
// Outside of the Unicode range
|
|
else if ($cp >= 0x10FFFF) {
|
|
$out[] = 0xFFFD;
|
|
}
|
|
else {
|
|
$out[] = $cp;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
//End of class
|
|
}
|
|
|
|
}
|
|
?>
|