hexpat-0.13: wrapper for expat, the fast XML parser Source code Contents Index

Text.XML.Expat.NodeClass

Description

A typeclass to allow for functions that work with different node types such as the ones defined in Tree and Annotated.

Synopsis

textContent :: (NodeClass n [], Monoid text) => n [] tag text -> text class List c => NodeClass n c where isElement :: n c tag text -> Bool isText :: n c tag text -> Bool textContentM :: Monoid text => n c tag text -> ItemM c text isNamed :: Eq tag => tag -> n c tag text -> Bool getName :: Monoid tag => n c tag text -> tag getAttributes :: n c tag text -> [(tag, text)] getChildren :: n c tag text -> c (n c tag text) getText :: Monoid text => n c tag text -> text modifyName :: (tag -> tag) -> n c tag text -> n c tag text modifyAttributes :: ([(tag, text)] -> [(tag, text)]) -> n c tag text -> n c tag text modifyChildren :: (c (n c tag text) -> c (n c tag text)) -> n c tag text -> n c tag text mapAllTags :: (tag -> tag') -> n c tag text -> n c tag' text mapElement :: ((tag, [(tag, text)], c (n c tag text)) -> (tag', [(tag', text)], c (n c tag' text))) -> n c tag text -> n c tag' text mapNodeContainer :: (c (n c tag text) -> ItemM c (c' (n c' tag text))) -> n c tag text -> ItemM c (n c' tag text) getAttribute :: (NodeClass n c, GenericXMLString tag) => n c tag text -> tag -> Maybe text setAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> text -> n c tag text -> n c tag text deleteAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> n c tag text -> n c tag text alterAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> Maybe text -> n c tag text -> n c tag text

Documentation

textContent :: (NodeClass n [], Monoid text) => n [] tag text -> text Source

Extract all text content from inside a tag into a single string, including any text contained in children.

class List c => NodeClass n c where Source

Methods isElement :: n c tag text -> Bool Source Is the given node an element? isText :: n c tag text -> Bool Source Is the given node text? textContentM :: Monoid text => n c tag text -> ItemM c text Source Extract all text content from inside a tag into a single string, including any text contained in children. isNamed :: Eq tag => tag -> n c tag text -> Bool Source Is the given node a tag with the given name? getName :: Monoid tag => n c tag text -> tag Source Get the name of this node if it's an element, return empty string otherwise. getAttributes :: n c tag text -> [(tag, text)] Source Get the attributes of a node if it's an element, return empty list otherwise. getChildren :: n c tag text -> c (n c tag text) Source Get children of a node if it's an element, return empty list otherwise. getText :: Monoid text => n c tag text -> text Source Get this node's text if it's a text node, return empty text otherwise. modifyName :: (tag -> tag) -> n c tag text -> n c tag text Source Modify name if it's an element, no-op otherwise. modifyAttributes :: ([(tag, text)] -> [(tag, text)]) -> n c tag text -> n c tag text Source Modify attributes if it's an element, no-op otherwise. modifyChildren :: (c (n c tag text) -> c (n c tag text)) -> n c tag text -> n c tag text Source Modify children (non-recursively) if it's an element, no-op otherwise. mapAllTags :: (tag -> tag') -> n c tag text -> n c tag' text Source Map all tags (both tag names and attribute names) recursively. mapElement :: ((tag, [(tag, text)], c (n c tag text)) -> (tag', [(tag', text)], c (n c tag' text))) -> n c tag text -> n c tag' text Source Map an element non-recursively, allowing the tag type to be changed. mapNodeContainer :: (c (n c tag text) -> ItemM c (c' (n c' tag text))) -> n c tag text -> ItemM c (n c' tag text) Source Change a node from one container type to another. Instances (Functor c, List c) => NodeClass NodeG c (Functor c, List c) => NodeClass (NodeG a) c

getAttribute :: (NodeClass n c, GenericXMLString tag) => n c tag text -> tag -> Maybe text Source

Get the value of the attribute having the specified name.

setAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> text -> n c tag text -> n c tag text Source

Set the value of the attribute with the specified name to the value, overwriting the first existing attribute with that name if present.

deleteAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> n c tag text -> n c tag text Source

Delete the first attribute matching the specified name.

alterAttribute :: (Eq tag, NodeClass n c, GenericXMLString tag) => tag -> Maybe text -> n c tag text -> n c tag text Source

setAttribute if Just, deleteAttribute if Nothing.

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