/*
如有转载，请注明作者
作者: 何志强
文件: ubb.php
备注: 说是改进，其实核心函数parse()已经完全重写了，而且思路也是不一样的。
不过仍是受何志强的例子的启发，而且测试的例子还有URLCHECK等几个函数也是沿用的何志强的程序，谢谢何志强。
目前还没有颜色的功能，但我会加入的。
如果在程序上有什么BUG或不便的地方，请给我MAIL。
谢谢！
改进功能:
对字符串进行UBB编码,该类目前只支持下列几个简单且实用的编码:
1. URL裢接
http://www.phpexe.com/
http://头可以不需要
如phpexe.com也是可以的。
2. Email裢接
demo@163.net
3. 图片裢接
同URL链接一样，前面的http也可以不要。
4. 文字方面
粗体字
斜体字
加下划线
1号标题字
...
6号标题字
[tt][/tt]
[s][/s]
[em][/em]
[strong][/strong]
[code][/code]
[samp][/samp]
[kbd][/kbd]
[var][/var]
[dfn][/dfn]
[cite][/cite]
注意以下几点:
1. url,email,img等标签是不分大小写的.
2. 在标签中不允许有TAB键出现，但空格允许。
3. 该类要调用htmlencode,htmlencode4textarea,emailcheck函数和urlcheck类.
4. 修改后支持嵌套，但url,email,img这三个标签不是允许嵌套的。
技术资料:
Ultimate Bulletin Board
http://www.ultimatebb.com/
What is UBB Code
http://www.scriptkeeper.com/ubb/ubbcode.html
*/
include("urlcheck.php");
include("otherfunc.php"); //这两个文件的内容，附在最后。
//ubbcode类
class ubbcode{
var $call_time=0;
//可处理标签及处理函数对应表
var $tags = array( //小写的标签 => 对应的处理函数
@#url@# => @#$this->url@#,
@#email@# => @#$this->email@#,
@#img@# => @#$this->img@#,
@#b@# => @#$this->simple@#,
@#i@# => @#$this->simple@#,
@#u@# => @#$this->simple@#,
@#tt@# => @#$this->simple@#,
@#s@# => @#$this->simple@#,
@#strike@# => @#$this->simple@#,
@#h1@# => @#$this->simple@#,
@#h2@# => @#$this->simple@#,
@#h3@# => @#$this->simple@#,
@#h4@# => @#$this->simple@#,
@#h5@# => @#$this->simple@#,
@#h6@# => @#$this->simple@#,
@#sup@# => @#$this->simple@#,
@#sub@# => @#$this->simple@#,
@#em@# => @#$this->simple@#,
@#strong@# => @#$this->simple@#,
@#code@# => @#$this->simple@#,
@#samp@# => @#$this->simple@#,
@#kbd@# => @#$this->simple@#,
@#var@# => @#$this->simple@#,
@#dfn@# => @#$this->simple@#,
@#cite@# => @#$this->simple@#,
@#small@# => @#$this->simple@#,
@#big@# => @#$this->simple@#,
@#blink@# => @#$this->simple@#
);
//url裢接属性
var $attr_url;
//url合法性检查对象
var $urlcheck;
function ubbcode($attr_url){
$this->attr_url = @#@#.$attr_url;
$this->urlcheck = new urlcheck();
}
//对$str进行UBB编码解析
function parse($str){
$this->call_time++;
$parse = @#@#.htmlencode($str);
$ret = @#@#;
while(true){
$eregi_ret=eregi("\[[#]{0,1}[[:alnum:]]{1,7}\]",$parse,$eregi_arr); //查找[xx]
if(!$eregi_ret){
$ret .= $parse;
break; //如果没有，返回
}
$pos = @strpos($parse,$eregi_arr[0]);
$tag_len=strlen($eregi_arr[0])-2;//标记长度
$tag_start=substr($eregi_arr[0],1,$tag_len);
$tag=strtolower($tag_start);
if((($tag=="url") or ($tag=="email") or ($tag=="img")) and ($this->call_time>1)){
echo $this->call_time."<br>";
return $parse;//如果不能是不能嵌套的标记，直接返回
}
$parse2 = substr($parse,0,$pos);//标记之前
$parse = substr($parse,$pos+$tag_len+2);//标记之后
if(!isset($this->tags[$tag])){
echo "$tag_start<br>";
$ret .= $parse2.@#[@#.$tag_start.@#]@#;
continue;//如果是不支持的标记
}
//查找对对应的结束标记
$eregi_ret=eregi("\[\/".$tag."\]",$parse,$eregi_arr);
if(!$eregi_ret){
$ret .= $parse2.@#[@#.$tag_start.@#]@#;
continue;//如果没有对应该的结束标记
}
$pos=strpos($parse,$eregi_arr[0]);
$value=substr($parse,0,$pos);//这是起止标记之间的内容
$tag_end=substr($parse,$pos+2,$tag_len);
$parse=substr($parse,$pos+$tag_len+3);//结束标记之后的内容
if(($tag!="url") and ($tag!="email") and ($tag!="img")){
$value=$this->parse($value);
}
$ret .= $parse2;
eval(@#$ret .= @#.$this->tags[$tag].@#("@#.$tag_start.@#","@#.$tag_end.@#","@#.$value.@#");@#);
}
$this->call_time--;
return $ret;
}
function simple($start,$end,$value){
return @#<@#.$start.@#>@#.$value.@#</@#.$end.@#>@#;
}
function url($start,$end,$value){
$trim_value=trim($value);
if (strtolower(substr($trim_value,0,7))!="http://")
$trim_value="http://".$trim_value;
if($this->urlcheck->check($trim_value)) return @#<a href="@#.$trim_value.@#" @#.$this->attr_url.@#>@#.$value.@#</a>@#;
else return @#[@#.$start.@#]@#.$value.@#[/@#.$end.@#]@#;
}
function email($start,$end,$value){
if(emailcheck($value)) return @#<a href="mailto:@#.$value.@#">@#.$value.@#</a>@#;
else return @#[@#.$start.@#]@#.$value.@#[/@#.$end.@#]@#;
}
function img($start,$end,$value){
$trim_value=trim($value);
if ((strtolower(substr($trim_value,0,7))!="http://") or ($this->urlcheck->check($trim_value)))
return @#<img src="@#.$trim_value.@#"></img>@#;
else return @#[@#.$start.@#]@#.$value.@#[/@#.$end.@#]@#;
}
}
//测试
echo @#<html>@#;
echo @#<head><title>测试</title></head>@#;
echo @#<body>@#;
echo @#<form action="@#.str2url($PATH_INFO).@#" method="post">@#;
echo @#<textarea cols="100" rows="10" name="ubb">@#.htmlencode4textarea($ubb).@#</textarea><br>@#;
echo @#<input type="submit" value="转换">@#;
echo @#</form>@#;
if(isset($ubb)){
$ubbcode = new ubbcode(@#target="_blank"@#);
echo @#<hr>@#.$ubbcode->parse($ubb);
}
echo @#</body>@#;
echo @#</html>@#;
?>
文件urlcheck.php的内容
<?php
//urlcheck.php
class urlcheck{
var $regex = array(//协议名(注意在这里必须写成小写) => 对应的正则表达式
@#ftp@# => @#$this->ftpurl@#,
@#file@# => @#$this->fileurl@#,
@#http@# => @#$this->httpurl@#,
@#https@# => @#$this->httpurl@#,
@#gopher@# => @#$this->gopherurl@#,
@#news@# => @#$this->newsurl@#,
@#nntp@# => @#$this->nntpurl@#,
@#telnet@# => @#$this->telneturl@#,
@#wais@# => @#$this->waisurl@#
);
var $lowalpha;
var $hialpha;
var $alpha;
var $digit;
var $safe;
var $extra;
var $national;
var $punctuation;
var $reserved;
var $hex;
var $escape;
var $unreserved;
var $uchar;
var $xchar;
var $digits;
var $urlpath;
var $password;
var $user;
var $port;
var $hostnumber;
var $alphadigit;
var $toplabel;
var $domainlabel;
var $hostname;
var $host;
var $hostport;
var $login;
//ftp
var $ftptype;
var $fsegment;
var $fpath;
var $ftpurl;
//file
var $fileurl;
//http,https
var $search;
var $hsegment;
var $hpath;
var $httpurl;
//gopher
var $gopher_string;
var $selector;
var $gtype;
var $gopherurl;
//news
var $article;
var $group;
var $grouppart;
var $newsurl;
//nntp
var $nntpurl;
//telnet
var $telneturl;
//wais
var $wpath;
var $wtype;
var $database;
var $waisdoc;
var $waisindex;
var $waisdatabase;
var $waisurl;
function check($url){
$pos = @strpos($url,@#:@#,1);
if($pos<1) return false;
$prot = substr($url,0,$pos);
if(!isset($this->regex[$prot])) return false;
eval(@#$regex = @#.$this->regex[$prot].@#;@#);
return ereg(@#^@#.$regex.@#$@#,$url);
}
function urlcheck(){
$this->lowalpha = @#[a-z]@#;
$this->hialpha = @#[A-Z]@#;
$this->alpha = @#(@#.$this->lowalpha.@#|@#.$this->hialpha.@#)@#;
$this->digit = @#[0-9]@#;
$this->safe = @#[$.+_-]@#;
$this->extra = @#[*()\@#!,]@#;
$this->national = @#([{}|\^~`]|\\[|\\])@#;
$this->punctuation = @#[<>#%"]@#;
$this->reserved = @#[?;/:@&=]@#;
$this->hex = @#(@#.$this->digit.@#|[a-fA-F])@#;
$this->escape = @#(%@#.$this->hex.@#{2})@#;
$this->unreserved = @#(@#.$this->alpha.@#|@#.$this->digit.@#|@#.$this->safe.@#|@#.$this->extra.@#)@#;
$this->uchar = @#(@#.$this->unreserved.@#|@#.$this->escape.@#)@#;
$this->xchar = @#(@#.$this->unreserved.@#|@#.$this->reserved.@#|@#.$this->escape.@#)@#;
$this->digits = @#(@#.$this->digit.@#+)@#;
$this->urlpath = @#(@#.$this->xchar.@#*)@#;
$this->password = @#((@#.$this->uchar.@#|[?;&=]@#.@#)*)@#;
$this->user = @#((@#.$this->uchar.@#|[?;&=]@#.@#)*)@#;
$this->port = $this->digits;
$this->hostnumber = @#(@#.$this->digits.@#.@#.$this->digits.@#.@#.$this->digits.@#.@#.$this->digits.@#)@#;
$this->alphadigit = @#(@#.$this->alpha.@#|@#.$this->digit.@#)@#;
$this->toplabel = @#(@#.$this->alpha.@#|(@#.$this->alpha.@#(@#.$this->alphadigit.@#|-)*@#.$this->alphadigit.@#))@#;
$this->domainlabel = @#(@#.$this->alphadigit.@#|(@#.$this->alphadigit.@#(@#.$this->alphadigit.@#|-)*@#.$this->alphadigit.@#))@#;
$this->hostname = @#((@#.$this->domainlabel.@#\\.)*@#.$this->toplabel.@#)@#;
$this->host = @#(@#.$this->hostname.@#|@#.$this->hostnumber.@#)@#;
$this->hostport = @#(@#.$this->host.@#(:@#.$this->port.@#)?)@#;
$this->login = @#((@#.$this->user.@#(:@#.$this->password.@#)?@)?@#.$this->hostport.@#)@#;
$this->ftptype = @#[aidAID]@#;
$this->fsegment = @#((@#.$this->uchar.@#|[?:@&=])*)@#;
$this->fpath = @#(@#.$this->fsegment.@#(/@#.$this->fsegment.@#)*)@#;
$this->ftpurl = @#([fF][tT][pP]://@#.$this->login.@#(/@#.$this->fpath.@#(;[tT][yY][pP][eE]=@#.$this->ftptype.@#)?)?)@#;
$this->fileurl = @#([fF][iI][lL][eE]://(@#.$this->host.@#|[lL][oO][cC][aA][lL][hH][oO][sS][tT])?/@#.$this->fpath.@#)@#;
$this->search = @#((@#.$this->uchar.@#|[;:@&=])*)@#;
$this->hsegment = @#((@#.$this->uchar.@#|[;:@&=])*)@#;
$this->hpath = @#(@#.$this->hsegment.@#(/@#.$this->hsegment.@#)*)@#;
$this->httpurl = @#([hH][tT][tT][pP][sS]?://@#.$this->hostport.@#(/@#.$this->hpath.@#([?]@#.$this->search.@#)?)?)@#;
$this->gopher_string = @#(@#.$this->xchar.@#*)@#;
$this->selector = @#(@#.$this->xchar.@#*)@#;
$this->gtype = $this->xchar;
$this->gopherurl = @#([gG][oO][pP][hH][eE][rR]://@#.$this->hostport.@#(/(@#.$this->gtype.@#(@#.$this->selector.@#(%09@#.$this->search.@#(%09@#.$this->gopher_string.@#)?)?)?)?)?)@#;
$this->article = @#((@#.$this->uchar.@#|[;/?:&=])+@@#.$this->host.@#)@#;
$this->group = @#(@#.$this->alpha.@#(@#.$this->alpha.@#|@#.$this->digit.@#|[-.+_])*)@#;
$this->grouppart = @#([*]|@#.$this->group.@#|@#.$this->article.@#)@#;
$this->newsurl = @#([nN][eE][wW][sS]:@#.$this->grouppart.@#)@#;
$this->nntpurl = @#([nN][nN][tT][pP]://@#.$this->hostport.@#/@#.$this->group.@#(/@#.$this->digits.@#)?)@#;
$this->telneturl = @#([tT][eE][lL][nN][eE][tT]://@#.$this->login.@#/?)@#;
$this->wpath = @#(@#.$this->uchar.@#*)@#;
$this->wtype = @#(@#.$this->uchar.@#*)@#;
$this->database = @#(@#.$this->uchar.@#*)@#;
$this->waisdoc = @#([wW][aA][iI][sS]://@#.$this->hostport.@#/@#.$this->database.@#/@#.$this->wtype.@#/@#.$this->wpath.@#)@#;
$this->waisindex = @#([wW][aA][iI][sS]://@#.$this->hostport.@#/@#.$this->database.@#[?]@#.$this->search.@#)@#;
$this->waisdatabase = @#([wW][aA][iI][sS]://@#.$this->hostport.@#/@#.$this->database.@#)@#;
$this->waisurl = @#(@#.$this->waisdatabase.@#|@#.$this->waisindex.@#|@#.$this->waisdoc.@#)@#;
}
}
?>
文件otherfunc.php的内容
<?php
//otherfunc.php
function htmlencode($str){
$str = (string)$str;
$ret = @#@#;
$len = strlen($str);
$nl = false;
for($i=0;$i<$len;$i++){
$chr = $str[$i];
switch($chr){
case @#<@#:
$ret .= @#<@#;
$nl = false;
break;
case @#>@#:
$ret .= @#>@#;
$nl = false;
break;
case @#"@#:
$ret .= @#"@#;
$nl = false;
break;
case @#&@#:
$ret .= @#&@#;
$nl = false;
break;
/*
case @# @#:
$ret .= @# @#;
$nl = false;
break;
*/
case chr(9):
$ret .= @# @#;
$nl = false;
break;
case chr(10):
if($nl) $nl = false;
else{
$ret .= @#<br>@#;
$nl = true;
}
break;
case chr(13):
if($nl) $nl = false;
else{
$ret .= @#<br>@#;
$nl = true;
}
break;
default:
$ret .= $chr;
$nl = false;
break;
}
}
return $ret;
}
function htmlencode4textarea($str){
$str = (string)$str;
$ret = @#@#;
$len = strlen($str);
for($i=0;$i<$len;$i++){
$chr = $str[$i];
switch($chr){
case @#<@#:
$ret .= @#<@#;
break;
case @#>@#:
$ret .= @#>@#;
break;
case @#"@#:
$ret .= @#"@#;
break;
case @#&@#:
$ret .= @#&@#;
break;
case @# @#:
$ret .= @# @#;
break;
case chr(9):
$ret .= @# @#;
break;
default:
$ret .= $chr;
break;
}
}
return $ret;
}
function emailcheck($email){
$ret=false;
if(strstr($email, @#@@#) && strstr($email, @#.@#)){
if(eregi("^([_a-z0-9]+([\\._a-z0-9-]+)*)@([a-z0-9]{2,}(\\.[a-z0-9-]{2,})*\\.[a-z]{2,3})$", $email)){
$ret=true;
}
}
return $ret;
}
function str2url($path){
return eregi_replace("%2f","/",urlencode($path));
}
?>
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