terminfo-0.1: Haskell bindings to the terminfo library.

Portabilityportable (FFI)



This module provides a low-level interface to the C functions of the terminfo library.

NOTE: Since this library is built on top of the curses interface, it is not thread-safe.



setupTerm :: String -> IO TerminalSource

Initialize the terminfo library to the given terminal entry.

setupTermFromEnv :: IO TerminalSource

Initialize the terminfo library, using the TERM environmental variable. If TERM is not set, we use the generic, minimal entry dumb.

data Capability a Source

A feature or operation which a Terminal may define.

tiGetFlag :: String -> Capability BoolSource

Look up a boolean capability in the terminfo database.

Unlike tiGuardFlag, this capability never fails; it returns False if the capability is absent or set to false, and returns True otherwise.

tiGuardFlag :: String -> Capability ()Source

Look up a boolean capability in the terminfo database, and fail if it's not defined.

tiGetNum :: String -> Capability IntSource

Look up a numeric capability in the terminfo database.

tiGetStr :: String -> Capability StringSource

Look up a string capability in the terminfo database.

Note: Do not use this function for terminal output; use tiGetOutput instead.

data TermOutput Source

An action which sends output to the terminal. That output may mix plain text with control characters and escape sequences, along with delays (called "padding") required by some older terminals.

termText :: String -> TermOutputSource

Output plain text containing no control characters or escape sequences.

tiGetOutput :: String -> Capability ([Int] -> LinesAffected -> TermOutput)Source

Look up an output capability in the terminfo database.

type LinesAffected = IntSource

A parameter to specify the number of lines affected. Some capabilities (e.g., clear and dch1) use this parameter on some terminals to compute variable-length padding.

tiGetOutput1 :: OutputCap f => String -> Capability fSource

Look up an output capability which takes a fixed number of parameters (for example, Int -> Int -> TermOutput).

For capabilities which may contain variable-length padding, use tiGetOutput instead.

class OutputCap f Source

A type class to encapsulate capabilities which take in zero or more parameters.