# REXML::StreamListener (Module)

In: | rexml/streamlistener.rb

A template for stream parser listeners. Note that the declarations (attlistdecl, elementdecl, etc) are trivially processed; REXML doesn’t yet handle doctype entity declarations, so you have to parse them out yourself.

## Methods

attlistdecl cdata comment doctype elementdecl entity entitydecl instruction notationdecl tag_end tag_start text xmldecl

## Public Instance methods

tag_start(name, attrs)

Called when a tag is encountered. @p name the tag name @p attrs an array of arrays of attribute/value pairs, suitable for use with assoc or rassoc. IE, <tag attr1="value1" attr2="value2"> will result in tag_start( "tag", # [["attr1","value1"],["attr2","value2"]])

[Source]

    # File rexml/streamlistener.rb, line 13
                    def tag_start name, attrs
                    end

tag_end(name)

Called when the end tag is reached. In the case of <tag/>, tag_end will be called immidiately after tag_start @p the name of the tag

[Source]

    # File rexml/streamlistener.rb, line 18
                    def tag_end name
                    end

text(text)

Called when text is encountered in the document @p text the text content.

[Source]

    # File rexml/streamlistener.rb, line 22
                    def text text
                    end

instruction(name, instruction)

Called when an instruction is encountered. EG: <?xsl sheet=’foo’?> @p name the instruction name; in the example, "xsl" @p instruction the rest of the instruction. In the example, "sheet=’foo’"

[Source]

    # File rexml/streamlistener.rb, line 28
                    def instruction name, instruction
                    end

comment(comment)

Called when a comment is encountered. @p comment The content of the comment

[Source]

    # File rexml/streamlistener.rb, line 32
                    def comment comment
                    end

doctype(name, pub_sys, long_name, uri)

Handles a doctype declaration. Any attributes of the doctype which are not supplied will be nil. # EG, <!DOCTYPE me PUBLIC "foo" "bar"> @p name the name of the doctype; EG, "me" @p pub_sys "PUBLIC", "SYSTEM", or nil. EG, "PUBLIC" @p long_name the supplied long name, or nil. EG, "foo" @p uri the uri of the doctype, or nil. EG, "bar"

[Source]

    # File rexml/streamlistener.rb, line 40
                    def doctype name, pub_sys, long_name, uri
                    end

attlistdecl(element_name, attributes, raw_content)

If a doctype includes an ATTLIST declaration, it will cause this method to be called. The content is the declaration itself, unparsed. EG, <!ATTLIST el attr CDATA REQUIRED> will come to this method as "el attr CDATA REQUIRED". This is the same for all of the .*decl methods.

[Source]

    # File rexml/streamlistener.rb, line 47
                    def attlistdecl element_name, attributes, raw_content
                    end

elementdecl(content)

<!ELEMENT …>

[Source]

    # File rexml/streamlistener.rb, line 50
                    def elementdecl content
                    end

entitydecl(content)

<!ENTITY …> The argument passed to this method is an array of the entity declaration. It can be in a number of formats, but in general it returns (example, result):

     <!ENTITY % YN '"Yes"'>
     ["%", "YN", "'\"Yes\"'", "\""]
     <!ENTITY % YN 'Yes'>
     ["%", "YN", "'Yes'", "s"]
     <!ENTITY WhatHeSaid "He said %YN;">
     ["WhatHeSaid", "\"He said %YN;\"", "YN"]
     <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
     ["open-hatch", "SYSTEM", "\"http://www.textuality.com/boilerplate/OpenHatch.xml\""]
     <!ENTITY open-hatch PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN" "http://www.textuality.com/boilerplate/OpenHatch.xml">
     ["open-hatch", "PUBLIC", "\"-//Textuality//TEXT Standard open-hatch boilerplate//EN\"", "\"http://www.textuality.com/boilerplate/OpenHatch.xml\""]
     <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif>
     ["hatch-pic", "SYSTEM", "\"../grafix/OpenHatch.gif\"", "\n\t\t\t\t\t\t\tNDATA gif", "gif"]

[Source]

    # File rexml/streamlistener.rb, line 68
                    def entitydecl content
                    end

notationdecl(content)

<!NOTATION …>

[Source]

    # File rexml/streamlistener.rb, line 71
                    def notationdecl content
                    end

entity(content)

Called when %foo; is encountered in a doctype declaration. @p content "foo"

[Source]

    # File rexml/streamlistener.rb, line 75
                    def entity content
                    end

cdata(content)

Called when <![CDATA[ … ]]> is encountered in a document. @p content "…"

[Source]

    # File rexml/streamlistener.rb, line 79
                    def cdata content
                    end

xmldecl(version, encoding, standalone)

Called when an XML PI is encountered in the document. EG: <?xml version="1.0" encoding="utf"?> @p version the version attribute value. EG, "1.0" @p encoding the encoding attribute value, or nil. EG, "utf" @p standalone the standalone attribute value, or nil. EG, nil

[Source]

    # File rexml/streamlistener.rb, line 86
                    def xmldecl version, encoding, standalone
                    end

[Validate]