CMS AP-Fusion - движок для вашего сайта

Description

void xslt_set_sax_handlers ( resource processor, array handlers )

xslt_set_sax_handlers() registers the SAX handlers for the document, given a XSLT processor resource.

handlers should be an array in the following format:


<?php



$handlers 
= array(



  
"document" 
=> array(

    
"start_doc"
,

    
"end_doc"
),



  
"element"  
=> array(

    
"start_element"
,

    
"end_element"
),



  
"namespace" 
=> array(

    
"start_namespace"
,

    
"end_namespace"
),



  
"comment"   
=> 
"comment"
,



  
"pi"        
=> 
"pi"
,



  
"character" 
=> 
"characters"




);


?>

Where the functions follow the syntax described for the scheme handler functions.

Замечание: The given array does not need to contain all of the different sax handler elements (although it can), but it only needs to conform to "handler" => "function" format described above.

Each of the individual SAX handler functions are in the format below:

start_doc ( resource processor )
end_doc ( resource processor )
start_element ( resource processor, string name, array attributes )
end_element ( resource processor, string name )
start_namespace ( resource processor, string prefix, string uri )
end_namespace ( resource processor, string prefix )
comment ( resource processor, string contents )
pi ( resource processor, string target, string contents )
characters ( resource processor, string contents )

Using xslt_set_sax_handlers() doesn't look very different than running a SAX parser like xml_parse() on the result of an xslt_process() transformation.

Примеры

Пример 1. xslt_set_sax_handlers() Example


<?php


// From ohlesbeauxjours at yahoo dot fr

// Here's a simple example that applies strtoupper() on 

// the content of every <auteur> tag and then displays the 

// resulting XML tree:




$xml
=
'<?xml version="1.0"?>

<books>

 <book>

  <title>Mme Bovary</title>

  <author>Gustave Flaubert</author>

 </book>

 <book>

  <title>Mrs Dalloway</title>

  <author>Virginia Woolf</author>

 </book>

</books>'
;




$xsl
=
'<?xml version="1.0"?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="html" encoding="ISO-8859-1" indent="no" omit-xml-declaration="yes"/>

<xsl:template match="/">

 <xsl:for-each select="books/book">

  <livre>

   <auteur><xsl:value-of select="author/text()"/></auteur>

  </livre>

 </xsl:for-each>

</xsl:template>

</xsl:stylesheet>'
;




// Handlers :


function 
start_document
() 

{

  
// start reading the document


}



function 
end_document
() 

{

  
// end reading the document


}



function 
start_element
(
$parser
, 
$name
, 
$attributes
) 

{

  global 
$result
,
$tag
;

  
$result 
.= 
"<"
. 
$name 
. 
">"
;

  
$tag 
= 
$name
;

}



function 
end_element
(
$parser
, 
$name
) 

{

  global 
$result
;

  
$result 
.= 
"</" 
. 
$name 
. 
">"
;

}



function 
characters
(
$parser
, 
$data
) 

{

  global 
$result
,
$tag
;

  if (
$tag 
== 
"auteur" 
) {

    
$data 
= 
strtoupper
(
$data
);

  }

  
$result 
.= 
$data
;

}




// Transformation :


$xh 
= 
xslt_create
();


$handlers 
= array(
"document" 
=> array(
"start_document"
,
"end_document"
),

   
"element" 
=> array(
"start_element"
,
"end_element"
),

   
"character" 
=> 
"characters"
);




xslt_set_sax_handlers
(
$xh
, 
$handlers
);


xslt_process
(
$xh
, 
'arg:/_xml'
, 
'arg:/_xsl'
, 
NULL
, array(
"/_xml"
=>
$xml
, 
"/_xsl"
=>
$xsl
));


xslt_free
(
$xh
);


?>

You can also use xslt_set_object() if you want to implement your handlers in an object.

Пример 2. Object oriented handler


<?php


// This is the object oriented version of the previous example


class 
data_sax_handler 
{



  var 
$buffer
, 
$tag
, 
$attrs
;



  var 
$_xh
;



  function 
data_sax_handler
(
$xml
, 
$xsl
)

  {

      
// our xslt resource

      
$this
->
_xh 
= 
xslt_create
();



      
xslt_set_object
(
$this
->
_xs
, 
$this
);



      
// configure sax handlers

      
$handlers 
= array(

        
"document" 
=> array(
'start_document'
, 
'end_document'
),

        
"element" 
=> array(
'start_element'
, 
'end_element'
),

        
"character" 
=> 
'characters'

      
);



      
xslt_set_sax_handlers
(
$this
->
_xh
, 
$handlers
);

    

      
xslt_process
(
$this
->
_xh
, 
'arg:/_xml'
, 
'arg:/_xsl'
, 
NULL
, array(
"/_xml"
=>
$xml
, 
"/_xsl"
=>
$xsl
));

      
xslt_free
(
$this
->
_xh
);





  }



  function 
start_document
() 

  {

        
// start reading the document

  
}



  function 
end_document
() {

        
// complete reading the document

  
}



  function 
start_element
(
$parser
, 
$name
, 
$attributes
) {

        
$this
->
tag 
= 
$name
;

        
$this
->
buffer 
.= 
"<" 
. 
$name 
. 
">"
;

        
$this
->
attrs 
= 
$attributes
;

  }



  function 
end_element
(
$parser
, 
$name
)

  {

        
$this
->
tag 
= 
''
;

        
$this
->
buffer 
.= 
"</" 
. 
$name 
. 
">"
;

  }



  function 
characters
(
$parser
, 
$data
)

  {

    if (
$this
->
tag 
== 
'auteur'
) {

          
$data 
= 
strtoupper
(
$data
);

    }

    
$this
->
buffer 
.= 
$data
;

  }

  

  function 
get_buffer
() {

    return 
$this
->
buffer
;

  }



}




$exec 
= new 
data_sax_handler
(
$xml
, 
$xsl
);




?>

Both examples will output:

<livre>
   <auteur>GUSTAVE FLAUBERT</auteur>
</livre>
<livre>
   <auteur>VIRGINIA WOOLF</auteur>
</livre>