Node-xml NPM | npm.io

node-xml

node-xml is an xml parser for node.js written in javascript.

API

SaxParser

Node-xml provides a SAX2 parser interface that can take a string, file. The parser can take characters from the document in chunks. To send chunks of the document to the parser use 'parseString(xml)'

#SAX Parser#

##new xml.SaxParser()## Instantiate a new SaxParser returns: a SaxParser object

##new xml.SaxParser(callback)## Instantiate a new SaxParser returns: a SaxParser object Arguments callback - a function that accepts the new sax parser as an argument

#Parse#

##parser.parseString(string)##

Parse an in memory string

return: boolean. true if no errors, false otherwise
Arguments * string - a string representing the document to parse

##parser.parseFile(filename)##

Parse a file

return: boolean. true if no errors, false otherwise
Arguments * filename - a string representing the file to be parsed

##parser.pause()## pauses parsing of the document

##parser.resume()## resumes parsing of the document

#Callbacks#

##parser.onStartDocument(function() {})##

Called at the start of a document

##parse.onEndDocument(function() {})##

Called at the end of the document parse

##parser.onStartElementNS(function(elem, attrs, prefix, uri, namespaces) {})##

Called on an open element tag

Arguments elem - a string representing the element name attrs - an array of arrays: [key, value, key, value] prefix - a string representing the namespace prefix of the element uri - the namespace URI of the element * namespaces - an array of arrays: [prefix, uri, prefix, uri]

##parser.onEndElementNS(function(elem, prefix, uri) {})##

Called at the close of an element

Arguments * elem - a string representing the element name
- prefix - a string representing the namespace prefix of the element
- uri - the namespace URI of the element

##parser.onCharacters(function(chars) {})##

Called when a set of content characters is encountered

Arguments * chars - a string of characters

##parser.onCdata(function(cdata) {})##

Called when a CDATA is encountered

Arguments * cdata - a string representing the CDATA

##parser.onComment(function(msg) {})##

Called when a comment is encountered

Arguments * msg - a string representing the comment

##parser.onWarning(function(msg) {})##

Called when a warning is encountered

Arguments * msg - a string representing the warning message

##parser.onError(function(msg) {})##

Called when an error is encountered

Arguments * msg - a string representing the error message

EXAMPLE USAGE

var util = require('util');
var xml = require("./lib/node-xml");

var parser = new xml.SaxParser(function(cb) {
  cb.onStartDocument(function() {
	
  });
  cb.onEndDocument(function() {
	
  });
  cb.onStartElementNS(function(elem, attrs, prefix, uri, namespaces) {
      util.log("=> Started: " + elem + " uri="+uri +" (Attributes: " + JSON.stringify(attrs) + " )");
  });
  cb.onEndElementNS(function(elem, prefix, uri) {
      util.log("<= End: " + elem + " uri="+uri + "\n");
         parser.pause();// pause the parser
         setTimeout(function (){parser.resume();}, 200); //resume the parser
  });
  cb.onCharacters(function(chars) {
      //util.log('<CHARS>'+chars+"</CHARS>");
  });
  cb.onCdata(function(cdata) {
      util.log('<CDATA>'+cdata+"</CDATA>");
  });
  cb.onComment(function(msg) {
      util.log('<COMMENT>'+msg+"</COMMENT>");
  });
  cb.onWarning(function(msg) {
      util.log('<WARNING>'+msg+"</WARNING>");
  });
  cb.onError(function(msg) {
      util.log('<ERROR>'+JSON.stringify(msg)+"</ERROR>");
  });
});


//example read from chunks
parser.parseString("<html><body>");
parser.parseString("<!-- This is the start");
parser.parseString(" and the end of a comment -->");
parser.parseString("and lots");
parser.parseString("and lots of text&am");
parser.parseString("p;some more.");
parser.parseString("<![CD");
parser.parseString("ATA[ this is");
parser.parseString(" cdata ]]>");
parser.parseString("</body");
parser.parseString("></html>");

//example read from file
parser.parseFile("sample.xml");