Class: Yast::XMLClass

Inherits:
Module
  • Object
show all
Includes:
Logger
Defined in:
library/xml/src/modules/XML.rb

Instance Method Summary collapse

Instance Method Details

#main ⇒ Object 



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# File 'library/xml/src/modules/XML.rb', line 55

def main
  # Sections in XML file that should be treated as CDATA when saving
  @cdataSections = []

  # How to call a list entry in the XML output
  @listEntries = {}

  # The system ID, or the DTD URI
  @systemID = nil

  # root element of the XML file
  @rootElement = ""

  # Global Namespace xmlns=...
  @nameSpace = "http://www.suse.com/1.0/yast2ns"

  # Type name space xmlns:config for YCP data (http://www.suse.com/1.0/configns)
  @typeNamespace = "http://www.suse.com/1.0/configns"

  @docs = {}
end

#validate(xml, schema) ⇒ Array<String>

Validates a XML document against a given schema.

Parameters:

  • xml (Pathname, String) —

    path or content of XML (if the string contains a new line character it is considered as a XML string, otherwise as a file name)

  • schema (Pathname, String) —

    path or content of relax ng schema

Returns:

  • (Array<String>) —

    array of strings with errors or empty array if well formed and valid

Raises:



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# File 'library/xml/src/modules/XML.rb', line 203

def validate(xml, schema)
  xml = SCR.Read(path(".target.string"), xml.to_s) if xml.is_a?(Pathname)
  if schema.is_a?(::String)
    validator = Nokogiri::XML::RelaxNG(schema)
  else
    schema_content = SCR.Read(path(".target.string"), schema.to_s)
    schema_path = File.dirname(schema)
    # change directory so relative include works
    Dir.chdir(schema_path) { validator = Nokogiri::XML::RelaxNG(schema_content) }
  end

  doc = Nokogiri::XML(xml, &:strict)
  validator.validate(doc).map(&:message)
rescue Nokogiri::XML::SyntaxError => e
  raise XMLDeserializationError, e.message
end

#xmlCreateDoc(doc, doc_settings) ⇒ void

This method returns an undefined value.

define a new doc type with custom settings, if not defined, global settings will be used.

Parameters:

  • symbol —

    Document type identifier

  • map —

    Document type Settings



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# File 'library/xml/src/modules/XML.rb', line 82

def xmlCreateDoc(doc, doc_settings)
  doc_settings = deep_copy(doc_settings)
  current_settings = {
    "cdataSections" => Ops.get_list(
      doc_settings,
      "cdataSections",
      @cdataSections
    ),
    "systemID"      => doc_settings["systemID"],
    "rootElement"   => Ops.get_string(
      doc_settings,
      "rootElement",
      @rootElement
    ),
    "listEntries"   => Ops.get_map(doc_settings, "listEntries", @listEntries)
  }
  if Ops.get_string(doc_settings, "typeNamespace", "") != ""
    Ops.set(
      current_settings,
      "typeNamespace",
      Ops.get_string(doc_settings, "typeNamespace", "")
    )
  end

  if Ops.get_string(doc_settings, "nameSpace", "") != ""
    Ops.set(
      current_settings,
      "nameSpace",
      Ops.get_string(doc_settings, "nameSpace", "")
    )
  end
  Ops.set(@docs, doc, current_settings)
  nil
end

#XMLError ⇒ Object

Deprecated.

Exception is used instead

The error string from the XML parser. It should be used when the agent did not return content. A reset happens before a new XML parsing starts.

Returns:

  • nil



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# File 'library/xml/src/modules/XML.rb', line 225

def XMLError
  nil
end

#XMLToYCPFile(xml_file) ⇒ Hash

Reads XML file

Parameters:

  • xml_file (String) —

    XML file name to read

Returns:

  • (Hash) —

    parsed content

Raises:



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# File 'library/xml/src/modules/XML.rb', line 167

def XMLToYCPFile(xml_file)
  raise ArgumentError, "XMLToYCPFile() received nil" if xml_file.nil?
  raise XMLDeserializationError, "Cannot find XML file #{xml_file}" if SCR.Read(path(".target.size"), xml_file) <= 0

  log.info "Reading #{xml_file}"
  XMLToYCPString(SCR.Read(path(".target.string"), xml_file))
end

#XMLToYCPString(xml_string) ⇒ Hash

Reads XML string

Parameters:

  • xml_string (String) —

    to read

Returns:

  • (Hash) —

    parsed content

Raises:



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# File 'library/xml/src/modules/XML.rb', line 179

def XMLToYCPString(xml_string)
  raise XMLDeserializationError, "Cannot convert empty XML string" if !xml_string || xml_string.empty?

  doc = Nokogiri::XML(xml_string, &:strict)
  doc.remove_namespaces! # remove fancy namespaces to make user life easier

  result = {}
  # inspect only element nodes
  doc.root.children.select(&:element?).each { |n| parse_node(n, result) }

  result
rescue Nokogiri::XML::SyntaxError => e
  raise XMLDeserializationError, e.message
end

#YCPToXMLFile(doc_type, contents, output_path) ⇒ Boolean

YCPToXMLFile() Write YCP data into formated XML file

Parameters:

  • doc_type (Symbol) —

    Document type identifier

  • contents (Hash) —

    a map with YCP data

  • output_path (String) —

    the path of the XML file

Returns:

  • (Boolean) —

    true on sucess

Raises:



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# File 'library/xml/src/modules/XML.rb', line 124

def YCPToXMLFile(doc_type, contents, output_path)
  xml = YCPToXMLString(doc_type, contents)
  return false unless xml

  SCR.Write(path(".target.string"), output_path, xml)
end

#YCPToXMLString(doc_type, contents) ⇒ String?

Write YCP data into formated XML string

Parameters:

  • doc_type (Symbol) —

    Document type identifier

  • contents (Hash) —

    a map with YCP data

Returns:

  • (String, nil) —

    String with XML data or nil if error happen

Raises:



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# File 'library/xml/src/modules/XML.rb', line 136

def YCPToXMLString(doc_type, contents)
  metadata = @docs[doc_type]
  if !metadata
    log.error "Calling YCPToXML with unknown doc_type #{doc_type.inspect}. " \
              "Known types #{@docs.keys.inspect}"
    return nil
  end

  doc = Nokogiri::XML::Document.new("1.0")
  root_name = metadata["rootElement"]
  if !root_name || root_name.empty?
    log.warn "root element missing in docs #{metadata.inspect}"
    return nil
  end

  doc.create_internal_subset(root_name, nil, metadata["systemID"])

  root = doc.create_element root_name
  root.default_namespace = metadata["nameSpace"] if metadata["nameSpace"]
  root.add_namespace("config", metadata["typeNamespace"]) if metadata["typeNamespace"]

  add_element(doc, metadata, root, contents)

  doc.root = root
  doc.to_xml
end