PHP写的XML文件分析器

<?

class easy_parser{

var $old_element = "";

var $attribute = array();

var $dado = "";

var $array_element = array();

var $array_attribute_value = array();

var $array_attributes = array();

var $array_nodes = array();

var $current_element = "";

var $array_texto = array();

var $get_err = "";

var $texto = "";

function getpart($texto,$string,$reset=TRUE,$position=0)

{

static $p0=0;

$p0 += $position;

if($reset){

$p0 = 0;

}

$get = "";

$string = trim($string);

if(strpos($texto,"<$string>",$p0) >=0)

{

$p1 = strpos($texto,"<$string>",$p0);

$p2 = strpos($texto,"</$string>",$p0);

$len = strlen("<$string>");

$get = substr($texto,($p1 + $len),($p2 - $p1 - $len));

$p0 = $p2+$len;

}

return $get;

}

function getrpart($texto,$string)

{

$get = "";

$string = trim($string);

if(strrpos($texto,"<$string>") >=0)

{

$p1 = strrpos($texto,"<$string>");

$texto2 = substr($texto,0,$p1);

$p2 = strrpos($texto2,"</$string>");

$len = strlen("<$string>");

$get = substr($texto2,$p2);

}

return $get;

}

function parser($document,$is_file=TRUE){

$result = TRUE;

$parser = xml_parser_create();

xml_set_object($parser,&$this);

xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING, 0);

xml_set_element_handler($parser,"start_element","end_element");

xml_set_character_data_handler($parser,"character_data");

if($is_file){

if(file_exists($document)){

$xml_file = fopen($document,"r");

$data = "";

$ind = 0;

while (!feof($xml_file)) {

$data = fgets($xml_file,256);

if(ereg("<!ENTITY.*SYSTEM",$data,$matchs) && strpos($data,"NDATA") <1){

$arrai = split(" ",$data);

$arrai[3] = str_replace("">","",$arrai[3]);

$arrai[3] = trim(str_replace(""","",$arrai[3]));

if(file_exists($arrai[3])){

$fp = fopen($arrai[3],"r");

while(!feof($fp)){

$ext_val[$ind] .= fgets($fp,1024);

}

fclose($fp);

$ext_key[$ind] = trim($arrai[1]);

++$ind;

}

}

$this->texto .= $data;

}

fclose($xml_file);

}else{

print "<b><h3>The file: <font color="blue">$document</font> not found.</b><h3>";

}

}else{

$this->texto = $document;

}

if(isset($ext_val)){

$ind = 0;

foreach($ext_val as $value){

$this->texto = str_replace("&".$ext_key[$ind].";","$valuen",$this->texto);

++$ind;

}

}

$this->array_texto = split("n",$this->texto);

if (!xml_parse($parser, $this->texto,TRUE)) {

$err_line = $this->array_texto[(xml_get_current_line_number($parser)-1)];

$err_col = xml_get_current_column_number($parser);

$text1 = "<font color="blue" size="3" face="arial">".htmlentities(substr($err_line,0,($err_col -1)))."</font><font color="red" size="3" face="arial">";

$text2 = htmlentities(substr($err_line,($err_col),1))."</font><font color="blue" size="3" face="arial">";

$text3 = htmlentities(substr($err_line,($err_col +1)))."<font>";

$this->get_err = "<font color="black" size="3" face="arial">Fonte do documento: $document<br>"

."<b>XML error: </b>".xml_error_string(xml_get_error_code($parser))." <b>at</b> line "

.xml_get_current_line_number($parser)." and colunm $err_col<br>"

."<b> Texto: </b>$text1$text2$text3";

$result = FALSE;

}

xml_parser_free($parser);

return $result;

}

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

$this->attribute = $attributes;

$this->dado = "";

$this->current_element = $element_name;

if(!in_array($element_name,$this->array_nodes)){

$this->array_nodes[] = $element_name;

}

while(list($key,$value) = each($attributes)){

$attr[] = $key;

}

$this->array_attributes[$this->current_element] = $attr;

}

function end_element($parser,$element_name){

if(trim($this->dado) != ""){

$this->array_element[$this->current_element][] = $this->dado;

}

reset($this->attribute);

$this->dado = "";

if(count($this->attribute)>0){

$this->array_attribute_value[$this->current_element][] = $this->attribute;

}

}

function character_data($parser,$data){

$this->dado .= $data;

}

function get_element_value($element,$ind = 0){

return $this->array_element[$element][$ind];

}

function get_element_rows($element){

return count($this->array_element[$element]);

}

function get_elements(){

return $this->array_nodes;

}

function get_element_attribute($element,$ind = 0,$attribute){

return $this->array_attribute_value[$element][$ind][$attribute];

}

function get_attributes($element){

return $this->array_attributes[$element];

}

function view_source(){

$retorno = htmlentities($this->texto);

return str_replace("&gt;","&gt;<br>",$retorno);

}

}

?>

Example

<?

//Exemplo:

//Example:

include("./easy_parser.inc"); // file of easy_parser class

$xml = new easy_parser;

$result = $xml->parser("file.xml",true); // if source of document is not a file then use $result = $xml->parser($var_source,false)

print $xml->view_source();

if($result){

$elements = $xml->get_elements();

print "<b><font face="arial" size="3" color="blue"><br>Element list:<p></font>";

while(list($key,$value) = each($elements)){

print "&nbsp;&nbsp;$value<br>";

}

print "<p><font face="arial" size="3" color="blue">Element value: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_value("file",1) . "<p>";

print "<p><font face="arial" size="3" color="blue">Element rows: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_rows("file") . "<p>";

print "<p><font face="arial" size="3" color="blue">Element attributes: <p></font>";

$attr = $xml->get_attributes("file");

while(list($key,$value) = each($attr)){

print "&nbsp;&nbsp;" . $value . "<br>";

}

print "<p><font face="arial" size="3" color="blue">Value of attribute size: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_attribute("file",0,"size") . "<p>";

}else{

print $xml->get_err;

}

?>

Source of file.xml:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE document [

<!ELEMENT document (file+,obs+,dia)+>

<!ELEMENT file (#PCDATA)>

<!ELEMENT obs (#PCDATA)>

<!ELEMENT name (#PCDATA)>

<!ELEMENT age (#PCDATA)>

<!ATTLIST file

number CDATA #REQUIRED

size CDATA #REQUIRED

>

<!ATTLIST obs

data CDATA #REQUIRED

>

<!ENTITY data1 "04/12/2000">

<!ENTITY hora1 "10:08:20">

<!ENTITY data2 "05/12/2000">

<!ENTITY hora2 "16:20:30">

<!ENTITY ext1 SYSTEM "file2.xml">

<!ENTITY ext2 SYSTEM "file3.xml">

]>

<document>

<file number="1" size="20">Este ?nbsp;o file numero 1. A data ?nbsp;&data1; e a hora ?nbsp;&hora1;</file>

<obs data="06/12/2000">chato!</obs>

<file number="2" size="25">Este ?nbsp;o file numero 2. A data ?nbsp;&data2; e a hora ?nbsp;&hora2;</file>

<file number="3" size="30"><![CDATA[ oi man?!!!]]></file>

<obs data="06/12/2000">chato!</obs>

&ext1;&ext2;

</document>

Source of file2.xml:

<age>24</age>

<age>25</age>

Source of file3.xml:

<name>Ze Mane</name>

<name>Rubens Barroso</name>
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