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File: convertir_enlace_inc.php

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  Classes of Patricio Cardó  >  Link converter  >  convertir_enlace_inc.php  >  Download  
File: convertir_enlace_inc.php
Role: Class source
Content type: text/plain
Description: class file
Class: Link converter
Convert URLs between absolute and relative paths
Author: By
Last change: fixed url detection in 'desde_url' method
Date: 5 years ago
Size: 3,017 bytes
 

Contents

Class file image Download
<?php
class convertir_enlace
{
     public
$log = array();
     public
$este = array();
     public
$es = "";
     private
$re_dir = '%[\w\%\d\-]+/%i';
     private
$re_prev = '%\.\./%i';
     function
dir_enlace(){
       
$this->este["raiz"] = str_replace('\x5c','/',$_SERVER["DOCUMENT_ROOT"]);
       
$this->este["relativa"] = str_replace('\x5c','/',dirname($_SERVER["PHP_SELF"]));
     
        if(isset(
$_SERVER["HTTP_REFERER"]) && is_string($_SERVER["HTTP_REFERER"])){
           
$httpas = preg_replace('%'.preg_quote($_SERVER["SCRIPT_NAME"]).'.*$%','',$_SERVER["HTTP_REFERER"]);
        }else{
            
$prot = (empty($_SERVER["HTTPS"])||$_SERVER["HTTPS"]=='off')?"http":"https";
            
$httpas = $prot."://".$_SERVER["SERVER_NAME"].'/'.substr($this->este["relativa"],1).'/';
        }
       
$this->este["url"] = str_replace('\x5c','/',$httpas);
       
$this->este["url_arr"] = parse_url($this->este["url"]);
       
       
$this->este["ruta"] = $this->este["raiz"].$this->este["relativa"];
       
$este_inf = parse_url($this->este["raiz"]);
       
$this->este["esquema"] = $este_inf["scheme"];
    }
    function
convertir_enlace(){
        
$link = (func_num_args()>0)?func_get_arg(0):$_SERVER["PHP_SELF"];
        
$toUrl = (func_num_args()>1)?func_get_arg(1):true;
       
$this->dir_enlace();
         if(
$toUrl){
           
$this->es = $this->desde_ruta($link);
        }else{
// to relative path;
           
$this->es = $this->desde_url($link);
        }
    }
    function
desde_ruta($link){
       
$info = parse_url($link);
       
$este_inf = parse_url($this->este["ruta"]);
        if(!isset(
$info["scheme"]) || $info["scheme"]==$this->este["esquema"]){
             if(isset(
$info["scheme"])){
               
$link = preg_replace('%'.preg_quote($this->este["raiz"]).'/%ims','',$link);
            }
           
$info = pathinfo($link);
           
$dirname = str_replace('\x5c','/',$info["dirname"]);
           
$dirname = preg_replace('%([^\.])\./%','$1',$info["dirname"]);
           
$retr = preg_match_all($this->re_prev,$info["dirname"]."/",$retrasos);
           
$rtrn = true;
           
$urldir = "/";

            if(
$retr>0){
               
$prof = preg_match_all($this->re_dir,$this->este["url_arr"]["path"],$dirs);
                if(
$retr>$prof){
                   
$this->log[] = "Path is deeper than url in ".$link;
                   
$rtrn = false;
                }else{
                    for(
$p=0;$p<($prof-$retr);$p++){
                       
$urldir .= $dirs[0][$p];
                    }
                }
               
$link = preg_replace($this->re_prev,'',$link);
            }
            if(
$rtrn){
               
$urldir .= preg_replace($this->re_prev,'',$link);
               
$rtrn = $this->este["url_arr"]["scheme"]."://".$this->este["url_arr"]["host"].$urldir;
            }
        }else{
           
$rtrn = $link;
        }
        return
$rtrn;
    }
    function
desde_url($link){
       
$info = parse_url($link);
        if(isset(
$info["host"])){
           
$a_este = str_split($this->este["url"]);
           
$a_link = str_split($link);
           
$debe = implode("",array_diff_assoc($a_link,$a_este));
           
$sobra = implode("",array_diff_assoc($a_este,$a_link));
           
$sobra = preg_replace('%//$%','/',$sobra);
           
$profundiza = (strlen($sobra)>0)?preg_replace($this->re_dir,'../',$sobra):"";

           
$rtrn = $profundiza.$debe;
        }else{
           
$rtrn = $link;
        }
        return
$rtrn;
    }
}
?>