| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Graphics.Vty.UnicodeWidthTable.Main
Description
This module provides a command-line tool implementation for building Vty character width tables and updating the user's local Vty configuration to load them.
The API is parameterized on a platform-specific function to obtain character widths. For example, on Unix platforms, this could be done with a routine that communicates with the terminal to query it for character widths. On other platforms, such a routine might interact with a system library.
This tool is provided as a library implementation so that the tool has a consistent interface across platforms and so that it implements the Vty configuration update the same way everywhere.
Synopsis
- defaultMain :: (Char -> IO Int) -> IO ()
Documentation
defaultMain :: (Char -> IO Int) -> IO () Source #
Run the character width table builder tool using the specified
function to obtain character widths. This is intended to be a main
implementation, e.g. main = defaultMain getCharWidth.
The tool queries the local terminal in some way (as determined by the provided function) over a wide range of Unicode code points and generates a table of character widths that can subsequently be loaded by Vty-based applications.
The tool respects the following command-line flags, all of which are optional and have sensible defaults:
-h/--help: help output-b/--bound: Unicode code point upper bound to use when building the table.-p/--path: the output path where the generated table should be written.-u/--update-config: If given, create or update the user's Vty configuration file to use the new table.-c/--config-path: the path to the user's Vty configuration.