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Ruby Rexml Example

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Document @context = source.context super source else build( source ) end end parse_stream( source, listener ) click to toggle source # File rexml/document.rb, line 204 def Document::parse_stream( source, listener ) Parsers::StreamParser.new( DocType } end document() click to toggle source # File rexml/document.rb, line 282 def document self end encoding() click to toggle source @return the XMLDecl encoding of this document as an When a tag is encountered, the stream listener's tag_start() method is called. Document @context = source.context super source else build( source ) end end parse_stream( source, listener ) click to toggle source # File rexml/document.rb, line 241 def Document::parse_stream( source, listener ) Parsers::StreamParser.new( his comment is here

If no XMLDecl has been set, returns the default version. # File rexml/document.rb, line 130 def version xml_decl().version end write( output=$stdout, indent=-1, transitive=false, ie_hack=false ) click to toggle source Write the Creating elements el = someelement.add_element "myel" # creates an element named "myel", adds it to "someelement", and returns it el2 = el.add_element "another", {"id"=>"10"} # does the same, but also sets If you want to insert an element at a specific location, you can use the methods insert_before and insert_after: irb(main):027:0> publisher = Element.new("publisher") => irb(main):028:0> publishername = Element.new("publishername") => Defaults to nil.

Ruby Rexml Example

For a more complex, more "standard" API, REXML also includes a streaming parser with a SAX2+ API. In the XML world,
is a node like any other. Can I use that to take out what he owes me? Thank you.

Using to_a() all_elements = doc.elements.to_a all_children = doc.to_a all_upc_strings = doc.elements.to_a( "//item/attribute::upc" ) all_name_elements = doc.elements.to_a( "//name" ) Text Nodes REXML attempts to make the common case simple, but this means Note that if you want to have an XML declaration written for a document you create, you must add one; REXML documents do not write a default declaration for you. If you wish to post a correction of the docs, please do so, but also file bug report so that it can be corrected for the next release. Rexml::elements If you set the :raw flag on any Text or Element node, the entities within that node will not be processed.

There are a number of these events, including :element_start, :end_prefix_mapping, and so on; the events are named after the methods in the SAX2Listener API, so refer to that document for a Rexml Document New Filtering for Events with Listeners listener1 = MySAX2Listener.new listener2 = MySAX2Listener.new parser.listen( listener1 ) parser.listen( %{ changelog, todo, credits }, listener2 ) parser.parse In the previous example, listener1 will be notified Just add water Accessing Elements doc = Document.new File.new("mydoc.xml") doc.elements.each("inventory/section") { |element| puts element.attributes["name"] } # -> health # -> food doc.elements.each("*/section/item") { |element| puts element.attributes["upc"] } # read the full info here Why do languages require parenthesis around expressions when used with "if" and "while"?

For example, code samples, or clarification of the documentation. Rexml Gem Once you have a document, you can access elements in that document in a number of ways: The Element class itself has each_element_with_attribute, a common way of accessing elements. The argument specifies the source from which we want to read an XML document. Please enable JavaScript to view the comments powered by Disqus.

  1. By default the limit is set to 10000. # File rexml/document.rb, line 216 def Document::entity_expansion_limit return @@entity_expansion_limit end entity_expansion_limit=( val ) click to toggle source Set the entity expansion limit.
  2. Read more Home Classes Methods In Files rexml/document.rb Parent Element Methods ::entity_expansion_limit ::entity_expansion_limit= ::entity_expansion_text_limit ::entity_expansion_text_limit= ::new ::parse_stream #<< #add #add_element #clone #doctype #document #encoding #expanded_name #name #node_type #record_entity_expansion #root #stand_alone? #version
  3. After that, we can execute commands to access the elements and attributes of the document, in an interactive way.
  4. Here are a few examples using these methods.
  5. if source.kind_of?
  6. The recommended style is options Hash style for one or more arguments case.
  7. However, when designing REXML, I had a choice between this behavior, and using immutable text nodes.
  8. Use REXML.entity_expansion_text_limit= instead. # File rexml/document.rb, line 223 def Document::entity_expansion_text_limit=( val ) REXML.entity_expansion_text_limit = val end new( source = nil, context = {} ) click to toggle source Constructor @param source
  9. Please look at the StreamListener API for more information.1 Whitespace By default, REXML respects whitespace in your document.

Rexml Document New

Join them; it only takes a minute: Sign up ruby rexml: parsing xml files cleanly up vote 0 down vote favorite I have the following XML file: http://ruby-doc.org/stdlib-2.3.0/libdoc/rexml/rdoc/REXML/Document.html A controversial point is whether Document should always write the XML declaration () whether or not one is given by the user (or source document). Ruby Rexml Example You can't find any specific info because there isn't anything specific. Rexml Xpath Stream Parsing Stream parsing is faster than tree parsing.

However, with stream parsing, you don't get access to features such as XPath. The listener mechanisms are very similar to the original REXML streaming API, with the addition of filtering options, and are faster than the proc mechanisms. How to decline a postdoc interview if there is some possible future collaboration? Product of all divisors=cube of number. Rexml Element

What happens if only some of the words are also entity reference values? Use REXML.entity_expansion_text_limit instead. # File rexml/document.rb, line 230 def Document::entity_expansion_text_limit return REXML.entity_expansion_text_limit end entity_expansion_text_limit=( val ) click to toggle source Set the entity expansion limit. If the constructor takes a String argument, the string will be expected to contain an XML document. indent An integer.

When REXML reads an XML document, in parses the DTD and creates an internal table of entities. Rexml Each Element A Document has a single child that can be accessed by root(). By default the limit is set to 10000. # File rexml/document.rb, line 211 def Document::entity_expansion_limit=( val ) @@entity_expansion_limit = val end entity_expansion_text_limit() click to toggle source Get the entity expansion limit.

Using XPath # The invisibility cream is the first invisibility = XPath.first( doc, "//item" ) # Prints out all of the prices XPath.each( doc, "//price") { |element| puts element.text }

Instead of the add_element method, you can also use the << method on Element.elements. You have been warned. This API differs from SAX2 in a couple of ways, such as having more filters and multiple notification mechanisms, but the core API is SAX2. Rexml Parse The two classes in the SAX2 API are SAX2Parser and SAX2Listener.

encoding ||= xml_decl.encoding if encoding != 'UTF-8' && !output.kind_of?(Output) output = Output.new( output, encoding ) end formatter = if indent > -1 if transitive require "rexml/formatters/transitive" REXML::Formatters::Transitive.new( indent, ie_hack ) else On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? Deprecated. The API documentation also contains code snippits to help you learn how to use various methods.

It's fast, written in Ruby, and can be used in two ways: tree parsing and stream parsing. You have an XML element that contains a text node, an empty element named br, another text node, another empty element named br and another text node. Hack your world. If this is problematic for your application, you can set the :raw flag on any Text or Element node, even on the Document node.

Filtering for Events with Procs require 'rexml/sax2parser' parser = REXML::SAX2Parser.new( File.new( 'documentation.xml' ) ) parser.listen( :characters ) {|text| puts text } parser.parse In this example, we tell the parser to call You will get better, faster, help that way. Since Element is a subclass of Parent, you can also access the element's children directly through the Array-like methods Element[], Element.each, Element.find, Element.delete. Why did Borden do that to his wife in The Prestige?

Thank you. Entity processing bad_source = "Cats & dogs" good_source = "Cats & dogs" doc = REXML::Document.new bad_source # Generates a parse error doc = REXML::Document.new good_source puts doc.root.text # -> "Cats & Related Links Code for this article: code.tgz REXML website REXML API documentation Ruby-lang website Some IRB tips XML.com Copyright © 1998-2006 O'Reilly Media, Inc. Who is this Voyager character?

Not the answer you're looking for? Workarounds If you cannot upgrade Ruby, use this monkey patch as a workaround: class REXML::Document @@entity_expansion_text_limit = 10_240 def self.entity_expansion_text_limit

Check the API documentation2 for particulars and more examples. DocType } end document() click to toggle source # File rexml/document.rb, line 243 def document self end encoding() click to toggle source @return the XMLDecl encoding of this document as an more hot questions question feed lang-rb about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation