X-Git-Url: http://gitweb.michael.orlitzky.com/?p=dead%2Flwn-epub.git;a=blobdiff_plain;f=src%2FMain.hs;h=373d423c9f322ba885db966fecff5b7e190c4dd4;hp=e91654da85a6446d32a02afed636a106dd514a7e;hb=6f0e6cbece7e1b1a3c6b43d19eb2f29088af981c;hpb=8e5616a377196f0a200947173d4c78a3dca8a55f diff --git a/src/Main.hs b/src/Main.hs index e91654d..373d423 100644 --- a/src/Main.hs +++ b/src/Main.hs @@ -1,14 +1,54 @@ +{-# LANGUAGE ScopedTypeVariables, RecordWildCards #-} module Main where -data Article = Article { headline :: String, - byline :: String, - body_html :: String } - deriving (Eq, Show) +import System.IO ( + Handle, + IOMode (WriteMode), + openBinaryFile, + stdout + ) +import Text.XML.HXT.Core -parse_article :: String -> String -parse_article _ = "" +import CommandLine (Args(..), apply_args) +import LWN.Page + +my_read :: String -> IOStateArrow s b XmlTree +my_read = + readDocument [ withValidate no, + withParseHTML yes, + withInputEncoding utf8, + withWarnings no ] + +-- | If we're given an empty path, return a handle to +-- 'stdout'. Otherwise, open the given file and return a read/write +-- handle to that. +get_output_handle :: FilePath -> IO Handle +get_output_handle path = + if (null path) then + return stdout + else + openBinaryFile path WriteMode + + +-- | Convert the given article to either a URL or a filesystem +-- path. If the given article exists on the filesystem, we assume +-- it's a file. Otherwise, we check to see if it's a URL. Failing +-- that, we try to construct a URL from what we're given and do our +-- best. +real_article_path :: String -> IO String +real_article_path = return . id main :: IO () main = do - putStrLn "Hello, world." + Args{..} <- apply_args + output_handle <- get_output_handle output + input_path <- real_article_path article + let html = my_read input_path + result <- parse html + + case result of + Just stuff -> epublish stuff output_handle + Nothing -> return () + + putStrLn "Done."