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  Classes of Marcio Ghiraldelli  >  FF-MVC  >  do  >  Download  
File: do
Role: Application script
Content type: text/plain
Description: Front Controller
Class: FF-MVC
MVC 2 implementation based on Java Struts
Author: By
Last change:
Date: 7 years ago
Size: 7,038 bytes
 

Contents

Class file image Download
<?php

/**************************************

  PHP MVC2 
  by FatFOX 19/07/2007
  marcio.gh at gmail.com

  - do

    Front Controller PHP
    Configurado para acesso Friendly URLs:
    http:// [your_host] /do/ActionName/arg1/arg2/...

    Apache deve ser configurado para forçar o "do" como um script PHP
    httpd.conf:

    <Files do>
      ForceType application/x-httpd-php
    </Files>


  - class MVC_Config

    Interpreta "config.xml", que contém as configurações do controlador

  
  - class MVC_RequestProcessor

    Implementa proccessRequest($MVC_Config) que processa todas as requisições.
    Lança exceções caso encontre algum erro


***************************************/

class MVC_Config {

  public 
$config_file;
  public 
$templates;
  public 
$actions;

  private 
$tmp_module;
  private 
$tmp_auth_module;
  private 
$tmp_action;
  private 
$tmp_global_forwards;
  private 
$tmp_type;
  private 
$tmp_forwards;

  function 
MVC_Config($config_file "/config.xml") {
    
$this->config_file $_SERVER['DOCUMENT_ROOT'].$config_file;
    
$xml_parser xml_parser_create();
    
xml_parser_set_option($xml_parserXML_OPTION_CASE_FOLDINGfalse);
    
xml_set_element_handler($xml_parser, array(&$this"XMLstartElement"), array(&$this"XMLendElement"));
    if (!(
$fp fopen($this->config_file"r"))) {
      throw new 
Exception("MVC: Erro abrindo configuracao XML: "$this->config_file);
    }
    while (
$data fread($fp4096)) {
      if (!
xml_parse($xml_parser$datafeof($fp))) {
        throw new 
Exception(sprintf("MVC: Erro XML: %s na linha %d",
          
xml_error_string(xml_get_error_code($xml_parser)),
          
xml_get_current_line_number($xml_parser))
        );
      }
    }
    
xml_parser_free($xml_parser);
  }

  function 
XMLstartElement($parser$name$attrs) {
    if (
$name == "xml") {
      
$this->actions = array();
      
$this->templates = array();
      
$this->auth_modules = array();
      unset(
$this->tmp_module);
      unset(
$this->tmp_auth_module);
      unset(
$this->tmp_global_forwards);
      unset(
$this->tmp_action);
      unset(
$this->tmp_type);
      
$this->tmp_forwards = array();
    }
    if (
$name == "template") {
      
$template_idx $attrs["name"];
      
$this->templates[$template_idx] = $attrs["file"];
    }
    if (
$name == "auth-module") {
      
$auth_module_idx $attrs["name"];
      
$this->auth_modules[$auth_module_idx] = array("require_session_user"=>$attrs["require-session-user"], "login_action"=>$attrs["login-action"]);
    }
    if (
$name == "module") {
      
$this->tmp_module $attrs["name"];
      
$this->tmp_auth_module $attrs["auth-module"];
    }
    if (
$name == "global-forward") {
      
$this->tmp_global_forwards[$attrs["name"]] = array("file"=>$attrs["file"], "template"=>$attrs["template"]);
    }
    if (
$name == "action") {
      
$this->tmp_action $attrs["name"];
      
$this->tmp_type $attrs["type"];
    }
    if (
$name == "forward") {
      
$this->tmp_forwards[$attrs["name"]] = array("file"=>$attrs["file"], "template"=>$attrs["template"]);
    }
  }

  function 
XMLendElement($parser$name) {
    if (
$name == "action") {
      if (
is_array($this->tmp_global_forwards)) {
        
$this->tmp_forwards array_merge($this->tmp_forwards$this->tmp_global_forwards);
      }
      
$this->actions[$this->tmp_action] = array("module"=>$this->tmp_module"type"=>$this->tmp_type"auth_module"=>$this->tmp_auth_module"forwards"=>$this->tmp_forwards);
      
$this->tmp_forwards = array();
    }
    if (
$name == "module") {
      
$this->tmp_global_forwards = array();
    }
    if (
$name == "xml") {
      unset (
$this->tmp_module);
      unset (
$this->tmp_auth_module);
      unset (
$this->tmp_action);
      unset (
$this->tmp_global_forwards);
      unset (
$this->tmp_forwards);
      unset (
$this->tmp_type);
    }
  }

}

class 
MVC_RequestProcessor {

  static 
$Config;

  function 
proccessRequest($Config) {
    
self::$Config $Config;
    
$args explode("/"$_SERVER['PATH_INFO']);
    
array_shift($args);
    
$do $args[0];
    if (!isset(
$do)) {
      throw new 
Exception("proccessRequest: Acao nao informada");
    }
    foreach (
self::$Config->actions as $action_name=>$mapping) {
      if (
$action_name == $do) {
        
$MyMapping $mapping;
        break;
      }
    }
    if (! isset(
$MyMapping)) {
      throw new 
Exception("proccessRequest: Acao '"$do ."' inexistente");
    }
    if (
$MyMapping["auth_module"]) {
      
$auth_module self::$Config->auth_modules[$MyMapping["auth_module"]];
      if (! 
is_array($auth_module)) {
        throw new 
Exception("proccessRequest: Acao '"$do ."' solicitou modulo de autenticacao inexistente: "$MyMapping["auth_module"]);
      }
      if (! isset(
$_SESSION[$auth_module["require_session_user"]])) {
        
$_SESSION["auth_module_destination"] = $_SERVER["REQUEST_URI"];
        
header("Location: /do/"$auth_module["login_action"]);
      }
    }
    
$actionClassFile $_SERVER['DOCUMENT_ROOT'] ."/"$MyMapping["module"] ."/"$MyMapping["type"] .".class.php";
    if (! 
is_file($actionClassFile)) {
      throw new 
Exception("proccessRequest: Classe '"$actionClassFile ."' nao encontrada");
    }
    include(
$actionClassFile);
    
$Action = new $MyMapping["type"];
    
$_REQUEST['args'] = $args;
    
$forward $Action->execute($_REQUEST$_SESSION);
    if (! isset(
$MyMapping["forwards"][$forward])) {
      throw new 
Exception("processRequest: Classe '"$actionClassFile ."' retornou forward inexistente '"$forward ."'");
    }
    
$Forward $MyMapping["forwards"][$forward];
    
$file $Forward["file"];
    if (
substr($file01) == "/") {
      
$view_file $_SERVER['DOCUMENT_ROOT'] . $file;
    } else {
      
$view_file $_SERVER['DOCUMENT_ROOT'] ."/"$MyMapping["module"] ."/view/"$file;
    }
    if (! 
is_file($view_file)) {
      throw new 
Exception("proccessForward: Arquivo de visão do forward '"$forward ."' da Acao '"$do ."' não encontrado: "$view_file);
    }
    
$template_idx $Forward["template"];
    
$template self::$Config->templates[$template_idx];
    if (isset(
$template)) {
      
$template_file $_SERVER['DOCUMENT_ROOT'] . "/" $template;
      if (! 
is_file($template_file)) {
        throw new 
Exception("proccessForward: Arquivo de template do forward '"$forward ."' da Acao '"$do ."' não encontrado: "$template_file);
      }
      
ob_start();
      include 
$view_file;
      
$MVC_conteudo "\n<div id='div"$do ."'>\n";
      
$MVC_conteudo.= ob_get_contents();
      
$MVC_conteudo.= "\n</div>\n";
      
ob_end_clean();
      include(
$template_file);
      
ob_flush();
    } else {
      include(
$view_file);
    }
  }

}

try {
  
session_start();
  
MVC_RequestProcessor::proccessRequest(new MVC_Config());
} catch (
Exception $e) {
  exit(
"<pre>"$e->getMessage() ."</pre>");
}
?>