This module converts between HTML/XML entities (i.e. &
) and
the characters they represent.
- lookupEntity :: String -> Maybe Char
- lookupNamedEntity :: String -> Maybe Char
- lookupNumericEntity :: String -> Maybe Char
- escapeXMLChar :: Char -> Maybe String
- xmlEntities :: [(String, Int)]
- htmlEntities :: [(String, Int)]
Documentation
lookupEntity :: String -> Maybe CharSource
Lookup an entity, using lookupNumericEntity
if it starts with
#
and lookupNamedEntity
otherwise
lookupNamedEntity :: String -> Maybe CharSource
Lookup a named entity, using htmlEntities
lookupNamedEntity "amp" == Just '&' lookupNamedEntity "haskell" == Nothing
lookupNumericEntity :: String -> Maybe CharSource
Lookup a numeric entity, the leading '#'
must have already been removed.
lookupNumericEntity "65" == Just 'A' lookupNumericEntity "x41" == Just 'A' lookupNumericEntity "x4E" === Just 'N' lookupNumericEntity "x4e" === Just 'N' lookupNumericEntity "Haskell" == Nothing lookupNumericEntity "" == Nothing lookupNumericEntity "89439085908539082" == Nothing
escapeXMLChar :: Char -> Maybe StringSource
Escape a character before writing it out to XML.
escapeXMLChar 'a' == Nothing escapeXMLChar '&' == Just "amp"
xmlEntities :: [(String, Int)]Source
A table mapping XML entity names to code points.
Does not include apos
as Internet Explorer does not know about it.
htmlEntities :: [(String, Int)]Source
A table mapping HTML entity names to code points