XML
|
|
|
|
<?
#############################################
# This is rdf-parse.inc, which parses RDF #
# files and outputs links to their ITEMs #
# #
# Optionally, it can also print HTML for #
# the IMAGE and CHANNEL bits of the XML. #
# Just uncomment those lines in endElement #
# and put in appropriate HTML. #
# #
# Usage: #
# parseRDF("filename") #
# note: "filename" can be a URL #
# #
# Requires: #
# PHP 4 compiled with "--use-xml" #
# #
# Creates: #
# Global variables $_depth, $_tags, and #
# $_item #
# #
# History: #
# v0.6b - fr3nd notified me of a party- #
# crashing feature of expat that #
# didn't parse stuff like & #
# properly. Fixed. Also fixed #
# initArray(), which didn't #
# do anything at all. #
# v0.61b- fixed a missing ) on line 46 #
#############################################
$_item = array();
$_depth = array();
$_tags = array( "dummy" );
# "dummy" prevents unecessary subtraction in the $_depth indexes
function initArray() {
global $_item;
$_item = array ("TITLE"=>"", "LINK"=>"", "DESCRIPTION"=>"", "URL"=>"" );
}
function startElement($parser, $name, $attrs) {
global $_depth, $_tags, $_item;
if ( ($name=="ITEM")||($name=="CHANNEL")||($name=="IMAGE") ) {
initArray();
}
$_depth[$parser]++;
array_push($_tags, $name);
}
function endElement($parser, $name) {
global $_depth, $_tags, $_item;
array_pop($_tags);
$_depth[$parser]--;
switch ($name) {
case "ITEM":
echo "<P><A HREF="$_item[LINK]">$_item[TITLE]</A></P>n";
initArray();
break;
case "IMAGE":
# echo "<A HREF="$_item[LINK]"><IMG SRC="$_item[URL]" ALT="$_item[TITLE]" BORDER=0></A>n<BR>n";
initArray();
break;
case "CHANNEL":
# echo "<h3>$_item[TITLE]</h3>n";
initArray();
break;
}
}
function parseData($parser, $text) {
global $_depth, $_tags, $_item;
$crap = preg_replace("/s/", "", $text);
# is the data just whitespace?
# if so, we don't want it!
if ($crap) {
$text = preg_replace("/^s+/", "", $text);
# get rid of leading whitespace
if ( $_item[$_tags[$_depth[$parser]]] ) {
$_item[$_tags[$_depth[$parser]]] .= $text;
} else {
$_item[$_tags[$_depth[$parser]]] = $text;
}
}
}
function parseRDF($file) {
global $_depth, $_tags, $_item;
$xml_parser = xml_parser_create();
initArray();
# Set up event handlers
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "parseData");
# Open up the file
$fp = fopen($file, "r") or die( "Could not open $file for input");
while ($data = fread($fp, 4096)) {
if (!xml_parse($xml_parser, $data, feof($fp))) {
die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
}
}
fclose( $fp );
xml_parser_free($xml_parser);
}
?>
|
|
|
Usage Example
|
<?
include( "rdf-parse.inc" );
$rdffile = "test.rdf";
$remote = "http://freshmeat.net/backend/fm.rdf";
$refreshtime = time() - 3600;
?>
<HTML>
<HEAD>
<TITLE>RDF Showcase</TITLE>
</HEAD>
<BODY BGCOLOR=#FFFFFF>
<?
if ((filemtime($rdffile) < $refreshtime) || (filesize($rdffile) == 0)) {
$RDF = fopen( $rdffile, "w" ) or die( "Cannot open $rdffile" );
$FILE = fopen( $remote, "r" ) or die( "Cannot open $remote" );
while (!feof( $FILE )) {
fwrite( $RDF, fgets( $FILE, 1024 ));
}
fclose( $RDF );
fclose( $FILE );
}
parseRDF( $rdffile );
?>
</BODY>
</HTML>
|
|
|
Rate This Script
|
|
|
|
Store
Your email: