13.4. XML::Parser Styles
- Debug
-
Prints out the document in outline form.
- Subs
-
Allows you to define a subroutine so that when an element is
encountered, the subroutine by that name is called, using the same
parameters that the Start handler is called with. When an element
ends, a subroutine with that name appended with an underscore
("_") is called with the same
parameters that the End handler is called with.
- Tree
-
Returns a parse tree for the document. Each node in the tree takes
the form of a tag/content pair. Text nodes use a pseudo-tag of
``0''
and the string that is their content. Elements represent their
content in an array reference, in which the first item in the array
is a hash reference containing attributes (if any). The remainder of
the array is a sequence of tag/content pairs representing the content
of the element.
- Objects
-
Similar to Tree, except that a hash object is created for each
element.
- Stream
-
Prints a copy of the document without comments or declarations if
none of the following routines are found:
- StartDocument
-
Called at the start of the parse.
- StartTag
-
Called for every start tag with a second parameter of the element
type. The $_ variable contains a copy of the tag,
and the %_ variable contains attribute values
supplied for that element.
- EndTag
-
Called for every end tag with a second parameter of the element type.
The $_ variable will contain a copy of the end
tag.
- Text
-
Called just before start or end tags with accumulated non-markup text
in the $_ variable.
- PI
-
Called for processing instructions. The $_
variable will contain a copy of the PI, and the target and data are
sent as second and third parameters, respectively.
- EndDocument
-
Called at conclusion of the parse.
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| 13.3. Expat Handlers |  | 13.5. Expat Encodings |
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