Common questions

How do I read an XML file in Ruby?

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How do I read an XML file in Ruby?

Ruby XML DOM-Like Parsing

  1. #!/usr/bin/ruby -w.
  2. require ‘rexml/document’
  3. include REXML.
  4. xmlfile = File.new(“trial.xml”)
  5. xmldoc = Document.new(xmlfile)
  6. # Now get the root element.
  7. root = xmldoc.root.
  8. puts “Root element : ” + root.attributes[“shelf”]

What is the best XML parser?

Best XML parser for Java [closed]

  • JDOM.
  • Woodstox.
  • XOM.
  • dom4j.
  • VTD-XML.
  • Xerces-J.
  • Crimson.

What is the use of Nokogiri?

Nokogiri (htpp://nokogiri.org/) is the most popular open source Ruby gem for HTML and XML parsing. It parses HTML and XML documents into node sets and allows for searching with CSS3 and XPath selectors. It may also be used to construct new HTML and XML objects.

What is XPath Ruby?

Ruby XPath is a language to find information in an XML file. It is an alternative to view XML file. It is used to navigate through elements and attributes in an XML document, treating that document as a logical ordered tree. Ruby XPath is very useful to get relevant information and attributes from XML file.

How do I read a text file in Ruby?

How to Read Files In Ruby

  1. Open the file, with the open method.
  2. Read the file, the whole file, line by line, or a specific amount of bytes.
  3. Close the file, with the close method.

What is Nokogiri gem?

The Nokogiri gem is an incredible open-source tool that parses HTML and XML data. It is one of the most widely used gems available, and it can really take your Ruby app to another level for data with its ability to help you intuitively scrape websites.

How do you scrape in Nokogiri?

Feel free to follow along!

  1. Add Nokogiri, Open-URI, and Pry to your Ruby file.
  2. Save the site you’d like to scrape to a variable.
  3. Add a binding.pry below the variable and run your file.
  4. Inspect content to scrape on your webpage.
  5. Play around in Pry.
  6. Push the content into an array.

What is the best way to parse XML in Ruby?

Parsing and Creating XML using Ruby. The most common way to manipulate XML is with the REXML library by Sean Russell. Since 2002, REXML has been part of the standard Ruby distribution. REXML is a pure-Ruby XML processor conforming to the XML 1.0 standard. It is a non-validating processor, passing all of the OASIS non-validating conformance tests.

What is rexml parser?

REXML is a pure-Ruby XML processor conforming to the XML 1.0 standard. It is a non-validating processor, passing all of the OASIS non-validating conformance tests. REXML parser has the following advantages over other available parsers −. It is written 100 percent in Ruby. It can be used for both SAX and DOM parsing.

Where can I find xslt4r in Ruby?

You can find this module at Ruby-Sablotron. XSLT4R is written by Michael Neumann and can be found at the RAA in the Library section under XML. XSLT4R uses a simple commandline interface, though it can alternatively be used within a third-party application to transform an XML document.

What is the best way to manipulate XML?

The most common way to manipulate XML is with the REXML library by Sean Russell. Since 2002, REXML has been part of the standard Ruby distribution. REXML is a pure-Ruby XML processor conforming to the XML 1.0 standard.

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