Stability	provisional
Safe Haskell	None
Language	Haskell2010

Text.XML.HXT.CSS

Contents

Supported selectors
Example

Description

Turn a CSS selector into an HXT arrow.

Synopsis

css :: (ArrowXml a, Css s) => s -> a XmlTree XmlTree
cssShallow :: (ArrowXml a, Css s) => s -> a XmlTree XmlTree
cssNav :: (ArrowXml a, Css s) => s -> a XmlNavTree XmlNavTree
cssShallowNav :: (ArrowXml a, Css s) => s -> a XmlNavTree XmlNavTree
class Css s

Documentation

css :: (ArrowXml a, Css s) => s -> a XmlTree XmlTree Source #

Select elements from an HTML document with a CSS selector.

cssShallow :: (ArrowXml a, Css s) => s -> a XmlTree XmlTree Source #

Like css, except that the selector is anchored at the top. For example, cssShallow "div" will only select div elements that are in the input of the arrow, it will not recursively search for divs contained deeper in the document tree. The latter can be selected by cssShallow "* div" but is recommended to use css for that. In other words, cssShallow "div" corresponds to the "/div" XPath expression, whereas cssShallow "* div" corresponds to "//div".

cssNav :: (ArrowXml a, Css s) => s -> a XmlNavTree XmlNavTree Source #

Like css, except that it operates on navigatable XML trees.

cssShallowNav :: (ArrowXml a, Css s) => s -> a XmlNavTree XmlNavTree Source #

Like cssShallow, except that it operates on navigatable XML trees.

class Css s Source #

Things that can be used as a CSS selector. The String instance uses safeParseCSS to parse the string.

Minimal complete definition

select

Instances

Instances details

Css PseudoClass Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => PseudoClass -> a XmlNavTree XmlNavTree select :: ArrowXml a => PseudoClass -> a XmlNavTree XmlNavTree
Css PseudoNthClass Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => PseudoNthClass -> a XmlNavTree XmlNavTree select :: ArrowXml a => PseudoNthClass -> a XmlNavTree XmlNavTree
Css Selector Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => Selector -> a XmlNavTree XmlNavTree select :: ArrowXml a => Selector -> a XmlNavTree XmlNavTree
Css SelectorsGroup Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => SelectorsGroup -> a XmlNavTree XmlNavTree select :: ArrowXml a => SelectorsGroup -> a XmlNavTree XmlNavTree
Css SimpleSelector Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => SimpleSelector -> a XmlNavTree XmlNavTree select :: ArrowXml a => SimpleSelector -> a XmlNavTree XmlNavTree
Css SimpleSelectorSeq Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => SimpleSelectorSeq -> a XmlNavTree XmlNavTree select :: ArrowXml a => SimpleSelectorSeq -> a XmlNavTree XmlNavTree
Css [Char] Source #
Instance details Defined in Text.XML.HXT.CSS Methods selectDeep :: ArrowXml a => [Char] -> a XmlNavTree XmlNavTree select :: ArrowXml a => [Char] -> a XmlNavTree XmlNavTree

Supported selectors

Element selectors: *, E, .class, #id
Relationship selectors: E F, E > F, E + F, E ~ F
Attribute selectors: [attr], [attr="value"], [attr~="value"], [attr|="value"], [attr^="value"], [attr$="value"], [attr*="value"]
Pseudo-classes: :not(..), :empty, :root, :first-child, :last-child, :only-child, :nth-child(N), :nth-last-child(N), :first-of-type, :last-of-type, :only-of-type, :nth-of-type(N), :nth-last-of-type(N)

The argument to the :nth-child() family of pseudo-classes can take one of the following forms: 6, 2n, n+2, 3n-1, -n+6, odd, even.

Example

import Text.XML.HXT.Core
import Text.XML.HXT.CSS

test :: IO [XmlTree]
test = runX $ doc >>> css "div > span + p:not(:nth-of-type(3n-1))"
  where
    doc = readDocument [withParseHTML yes, withWarnings no] path
    path = "/path/to/document.html"