Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell98 |
- newtype Control' a = Control [Paragraph' a]
- newtype Paragraph' a = Paragraph [Field' a]
- data Field' a
- type Control = Control' String
- type Paragraph = Paragraph' String
- type Field = Field' String
- type ControlParser a = CharParser () a
- class ControlFunctions a where
- parseControlFromFile :: FilePath -> IO (Either ParseError (Control' a))
- parseControlFromHandle :: String -> Handle -> IO (Either ParseError (Control' a))
- parseControl :: String -> a -> Either ParseError (Control' a)
- lookupP :: String -> Paragraph' a -> Maybe (Field' a)
- stripWS :: a -> a
- asString :: a -> String
- pControl :: ControlParser Control
- mergeControls :: [Control' a] -> Control' a
- fieldValue :: ControlFunctions a => String -> Paragraph' a -> Maybe a
- removeField :: Eq a => a -> Paragraph' a -> Paragraph' a
- prependFields :: [Field' a] -> Paragraph' a -> Paragraph' a
- appendFields :: [Field' a] -> Paragraph' a -> Paragraph' a
- renameField :: Eq a => a -> a -> Paragraph' a -> Paragraph' a
- modifyField :: Eq a => a -> (a -> a) -> Paragraph' a -> Paragraph' a
- raiseFields :: Eq a => (a -> Bool) -> Paragraph' a -> Paragraph' a
Types
Control [Paragraph' a] |
newtype Paragraph' a Source
Eq a => Eq (Paragraph' a) | |
Ord a => Ord (Paragraph' a) | |
Read a => Read (Paragraph' a) | |
Show a => Show (Paragraph' a) | |
Pretty a => Pretty (Paragraph' a) |
NOTE: we do not strip the leading or trailing whitespace in the name or value
type Paragraph = Paragraph' String Source
type ControlParser a = CharParser () a Source
class ControlFunctions a where Source
parseControlFromFile :: FilePath -> IO (Either ParseError (Control' a)) Source
parseControlFromFile
filepath
is a simple wrapper function
that parses filepath
using pControl
parseControlFromHandle :: String -> Handle -> IO (Either ParseError (Control' a)) Source
parseControlFromHandle
sourceName
handle
- sourceName
is only used for error reporting
parseControl :: String -> a -> Either ParseError (Control' a) Source
parseControlFromString
sourceName
text
- sourceName
is only used for error reporting
lookupP :: String -> Paragraph' a -> Maybe (Field' a) Source
lookupP
fieldName paragraph
looks up a Field
in a Paragraph
.
N.B.
trailing and leading whitespace is not stripped.
Strip the trailing and leading space and tab characters from a string. Folded whitespace is not unfolded. This should probably be moved to someplace more general purpose.
Control File Parser
pControl :: ControlParser Control Source
A parser for debian control file. This parser handles control files
that end without a newline as well as ones that have several blank
lines at the end. It is very liberal and does not attempt validate
the fields in any way. All trailing, leading, and folded whitespace
is preserved in the field values. See stripWS
.
Helper Functions
mergeControls :: [Control' a] -> Control' a Source
fieldValue :: ControlFunctions a => String -> Paragraph' a -> Maybe a Source
removeField :: Eq a => a -> Paragraph' a -> Paragraph' a Source
prependFields :: [Field' a] -> Paragraph' a -> Paragraph' a Source
appendFields :: [Field' a] -> Paragraph' a -> Paragraph' a Source
renameField :: Eq a => a -> a -> Paragraph' a -> Paragraph' a Source
modifyField :: Eq a => a -> (a -> a) -> Paragraph' a -> Paragraph' a Source
raiseFields :: Eq a => (a -> Bool) -> Paragraph' a -> Paragraph' a Source
Move selected fields to the beginning of a paragraph.