Whats Hatena Syntax
Why i wrote
- ttp://d.hatena.ne.jp/anatoo/20080102/1199241367
- this is Hatena Syntax runnning on PHP but it is runnning over PHP5
var $result="";
var $currentline="";
var $currentlinetext="";
var $currentlinehtml="";
var $lastTagFlag="";
var $lastTagFlagNum="";
var $currentlistTag="";
function ConvertHatenaSyntax($t)
- main function
- $t is text to convert
- line:100-162
function ConvertHatenaSyntax($t){
$lines=preg_split('/\n/',$t);
$result="";
for($i=0;$i<count($lines);$i++){
$this->currentlinehtml="";
$l=$lines[$i];
$this->currentline=$l;
$pre=false;
//行頭にキーワードがあるかをチェック
if(preg_match("/^[\+-]/",$this->currentline)){
//list記法
$this->liSyntax($i);
}elseif(preg_match("/^\*/",$this->currentline)){
$this->currentlinehtml.=$this->listTagClosing();
//タイトル記法
$this->titleSyntax();
}
elseif(preg_match("/^\|/",$this->currentline)){
//table記法
$this->currentlinehtml.=$this->listTagClosing();
while(preg_match("/^\|/",$lines[$i])){
$cells=preg_split("/\|/",$lines[$i]);
$innerTable.="<tr>";
foreach($cells as $cell){
if(!$cell){continue;}
$innerTable.="<td>".$cell."</td>\n";
}
$innerTable.="</tr>\n";
$i++;
}
$this->currentline="<table>\n".$innerTable."</table>\n";
}
elseif(preg_match("/^>>$/",$this->currentline)){
//pre記法
$this->currentlinehtml.=$this->listTagClosing();
$this->currentlinehtml.="<pre>\n";
while(true){
if(!preg_match("/^<<$/",$lines[++$i])){
$this->currentlinehtml.=$lines[$i]."\n";
}else{
break;
}
}
$this->currentlinehtml.="</pre>\n";
//$i++;
$pre=true;
}
if($this->lastTagFlag==="ol"||$this->lastTagFlag==="ul"){
$this->currentlinehtml.=$this->listTagClosing();
}
//それ以外の記法 ex)http記法 image記法
if(!$pre&&preg_match("/\[.*:.*\]/",$this->currentline)){
$this->inlineSyntaxes();
}
//行を結合する
$this->result.=$this->currentlinehtml?$this->currentlinehtml:$this->currentline."<br />";
}//end for
return $this->result;
}//end function ConvertHatenaSyntax
- make list html
- $linenumber is current line in textfile
- line:7-50
function liSyntax($linenumber){
$l=$this->currentline;
$identifie=substr($l,0,1);
if($identifie=="-"){
$tag="ul";
}else{
$tag="ol";
}
$pattern="/\\".$identifie."*/";
preg_match($pattern,$l,$matches,PREG_OFFSET_CAPTURE);
$match=$matches[0][0];
$n=strlen($match);
$text=substr($l,$n,strlen($l)-1);
$this->currentlinetext=$text;
if($linenumber===0){
//最初の行の場合 but ほとんどのケースはtitle記法のはずなのでテスト用
$this->currentlistTag=str_repeat("<".$tag.">",$n)."\n"."<li>".$this->currentlinetext."</li>\n";
}elseif($tag===$this->lastTagFlag){
//前の列と同じタグの種類の場合
if($n===$this->lastTagFlagNum){
//前の列と同じレベルの場合
$this->currentlistTag="<li>".$this->currentlinetext."</li>\n";
}elseif($n>$this->lastTagFlagNum){
//前の列より高いレベルの場合
$diff=$n-$this->lastTagFlagNum;
$this->currentlistTag=str_repeat("<".$tag.">",$diff)."\n"."<li>".$this->currentlinetext."</li>\n";
}elseif($n<$this->lastTagFlagNum){
//前の列より低いレベルの場合
$diff=$this->lastTagFlagNum-$n;
$this->currentlistTag=str_repeat("</".$tag.">",$diff)."\n"."<li>".$this->currentlinetext."</li>\n";
}
}else{
//前の列と違うタグの場合
//まず前のタグを閉じる
$closetag=$this->listTagClosing();
//それから新たなタグを付ける
$this->currentlistTag=$closetag.str_repeat("<".$tag.">",$n)."\n"."<li>".$this->currentlinetext."</li>\n";
}
$this->lastTagFlagNum=$n;
$this->lastTagFlag=$tag;
$this->currentlinehtml=$this->currentlistTag;
}
function listTagClosing(){
if($this->lastTagFlag==="ol"||$this->lastTagFlag==="ul"){
$cn=intval($this->lastTagFlagNum);
$ct="</".$this->lastTagFlag.">";
$closetag=str_repeat($ct,$cn)."\n";
$this->lastTagFlag="done";
return $closetag;
}else{
return"";
}
}
function titleSyntax(){
$l=$this->currentline;
$pattern="/\\**/";
preg_match($pattern,$l,$matches,PREG_OFFSET_CAPTURE);
$match=$matches[0][0];
$n=strlen($match)+1;
$text=substr($l,$n-1,strlen($l)-1);
$this->currentlinehtml.="<h".$n.">".$text."</h".$n.">\n";
}
- convert [****:] to some html
function inlineSyntaxes(){
$l=$this->currentline;
preg_match_all("/\[.*?:.*?\]/",$l,$matches,PREG_OFFSET_CAPTURE);
foreach($matches[0] as $match){
$wasundefined=false;
$m=$match[0];
$keys=preg_split("/:/",substr($m,1,-1));
switch($keys[0]){
case"http":
$url=$keys[0].":".$keys[1];
if(preg_match("/title=.*/",$keys[2])){
$title=preg_replace("/title=(.*)/","$1",$keys[2]);
}
$inlinehtml=$title?"<a href='$url' target='_blank'>$title</a>":"<a href='$url' target='_blank'>$url</a>";
break;
case"image":
$inlinehtml="<img src='/img/".$keys[1]."'>";
break;
default:
$wasundefined=true;
break;
}
if(!$wasundefined){
$this->currentlinehtml=preg_replace('/'.preg_quote($m,"/").'/',$inlinehtml,$this->currentline);
}
}
}
