pandoc/src/pandoc.hs
fiddlosopher d704f47b86 Better heuristics for guessing reader to use.
If argument is an absolute URL without a recognized extension,
and no reader is explicitly specified, use HTML.

git-svn-id: https://pandoc.googlecode.com/svn/trunk@1908 788f1e2b-df1e-0410-8736-df70ead52e1b
2010-03-18 06:45:50 +00:00

794 lines
32 KiB
Haskell

{-
Copyright (C) 2006-8 John MacFarlane <jgm@berkeley.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Main
Copyright : Copyright (C) 2006-8 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley@edu>
Stability : alpha
Portability : portable
Parses command-line options and calls the appropriate readers and
writers.
-}
module Main where
import Text.Pandoc
import Text.Pandoc.ODT
import Text.Pandoc.Writers.S5 (s5HeaderIncludes)
import Text.Pandoc.LaTeXMathML (latexMathMLScript)
import Text.Pandoc.Shared ( tabFilter, ObfuscationMethod (..) )
#ifdef _HIGHLIGHTING
import Text.Pandoc.Highlighting ( languages )
#endif
import System.Environment ( getArgs, getProgName, getEnvironment )
import System.Exit ( exitWith, ExitCode (..) )
import System.FilePath
import System.Console.GetOpt
import Data.Maybe ( fromMaybe )
import Data.Char ( toLower, isDigit )
import Data.List ( intercalate, isSuffixOf )
import System.Directory ( getAppUserDataDirectory )
import System.IO ( stdout, stderr )
-- Note: ghc >= 6.12 (base >=4.2) supports unicode through iconv
-- So we use System.IO.UTF8 only if we have an earlier version
#if MIN_VERSION_base(4,2,0)
import System.IO ( hPutStr, hPutStrLn )
#else
import Prelude hiding ( putStr, putStrLn, writeFile, readFile, getContents )
import System.IO.UTF8
#endif
#ifdef _CITEPROC
import Text.CSL
import Text.Pandoc.Biblio
#endif
import Control.Monad (when, unless, liftM)
import Network.HTTP (simpleHTTP, mkRequest, getResponseBody, RequestMethod(..))
import Network.URI (parseURI, isURI)
import Data.ByteString.Lazy.UTF8 (toString)
copyrightMessage :: String
copyrightMessage = "\nCopyright (C) 2006-8 John MacFarlane\n" ++
"Web: http://johnmacfarlane.net/pandoc\n" ++
"This is free software; see the source for copying conditions. There is no\n" ++
"warranty, not even for merchantability or fitness for a particular purpose."
compileInfo :: String
compileInfo =
#ifdef _CITEPROC
"\nCompiled with citeproc support." ++
#endif
#ifdef _HIGHLIGHTING
"\nCompiled with syntax highlighting support for:\n" ++
wrapWords 78 languages ++
#endif
""
-- | Converts a list of strings into a single string with the items printed as
-- comma separated words in lines with a maximum line length.
wrapWords :: Int -> [String] -> String
wrapWords c = wrap' c c where
wrap' _ _ [] = ""
wrap' cols remaining (x:xs) = if remaining == cols
then x ++ wrap' cols (remaining - length x) xs
else if (length x + 1) > remaining
then ",\n" ++ x ++ wrap' cols (cols - length x) xs
else ", " ++ x ++ wrap' cols (remaining - (length x + 2)) xs
-- | Association list of formats and readers.
readers :: [(String, ParserState -> String -> Pandoc)]
readers = [("native" , readPandoc)
,("markdown" , readMarkdown)
,("markdown+lhs" , readMarkdown)
,("rst" , readRST)
,("rst+lhs" , readRST)
,("html" , readHtml)
,("latex" , readLaTeX)
,("latex+lhs" , readLaTeX)
]
-- | Reader for native Pandoc format.
readPandoc :: ParserState -> String -> Pandoc
readPandoc _ = read
-- | Association list of formats and writers.
writers :: [ ( String, WriterOptions -> Pandoc -> String ) ]
writers = [("native" , writeDoc)
,("html" , writeHtmlString)
,("html+lhs" , writeHtmlString)
,("s5" , writeS5String)
,("docbook" , writeDocbook)
,("opendocument" , writeOpenDocument)
,("odt" , writeOpenDocument)
,("latex" , writeLaTeX)
,("latex+lhs" , writeLaTeX)
,("context" , writeConTeXt)
,("texinfo" , writeTexinfo)
,("man" , writeMan)
,("markdown" , writeMarkdown)
,("markdown+lhs" , writeMarkdown)
,("plain" , writePlain)
,("rst" , writeRST)
,("rst+lhs" , writeRST)
,("mediawiki" , writeMediaWiki)
,("rtf" , writeRTF)
]
isNonTextOutput :: String -> Bool
isNonTextOutput = (`elem` ["odt"])
-- | Writer for Pandoc native format.
writeDoc :: WriterOptions -> Pandoc -> String
writeDoc _ = prettyPandoc
headerShift :: Int -> Pandoc -> Pandoc
headerShift n = processWith shift
where shift :: Block -> Block
shift (Header level inner) = Header (level + n) inner
shift x = x
-- | Data structure for command line options.
data Opt = Opt
{ optTabStop :: Int -- ^ Number of spaces per tab
, optPreserveTabs :: Bool -- ^ Preserve tabs instead of converting to spaces
, optStandalone :: Bool -- ^ Include header, footer
, optReader :: String -- ^ Reader format
, optWriter :: String -- ^ Writer format
, optParseRaw :: Bool -- ^ Parse unconvertable HTML and TeX
, optTableOfContents :: Bool -- ^ Include table of contents
, optTransforms :: [Pandoc -> Pandoc] -- ^ Doc transforms to apply
, optTemplate :: String -- ^ Custom template
, optVariables :: [(String,String)] -- ^ Template variables to set
, optBefore :: [String] -- ^ Texts to include before body
, optAfter :: [String] -- ^ Texts to include after body
, optOutputFile :: String -- ^ Name of output file
, optNumberSections :: Bool -- ^ Number sections in LaTeX
, optIncremental :: Bool -- ^ Use incremental lists in S5
, optXeTeX :: Bool -- ^ Format latex for xetex
, optSmart :: Bool -- ^ Use smart typography
, optHTMLMathMethod :: HTMLMathMethod -- ^ Method to print HTML math
, optReferenceODT :: Maybe FilePath -- ^ Path of reference.odt
, optDumpArgs :: Bool -- ^ Output command-line arguments
, optIgnoreArgs :: Bool -- ^ Ignore command-line arguments
, optStrict :: Bool -- ^ Use strict markdown syntax
, optReferenceLinks :: Bool -- ^ Use reference links in writing markdown, rst
, optWrapText :: Bool -- ^ Wrap text
, optSanitizeHTML :: Bool -- ^ Sanitize HTML
, optPlugins :: [Pandoc -> IO Pandoc] -- ^ Plugins to apply
, optEmailObfuscation :: ObfuscationMethod
, optIdentifierPrefix :: String
, optIndentedCodeClasses :: [String] -- ^ Default classes for indented code blocks
, optDataDir :: Maybe FilePath
#ifdef _CITEPROC
, optBiblioFile :: String
, optBiblioFormat :: String
, optCslFile :: String
#endif
}
-- | Defaults for command-line options.
defaultOpts :: Opt
defaultOpts = Opt
{ optTabStop = 4
, optPreserveTabs = False
, optStandalone = False
, optReader = "" -- null for default reader
, optWriter = "" -- null for default writer
, optParseRaw = False
, optTableOfContents = False
, optTransforms = []
, optTemplate = ""
, optVariables = []
, optBefore = []
, optAfter = []
, optOutputFile = "-" -- "-" means stdout
, optNumberSections = False
, optIncremental = False
, optXeTeX = False
, optSmart = False
, optHTMLMathMethod = PlainMath
, optReferenceODT = Nothing
, optDumpArgs = False
, optIgnoreArgs = False
, optStrict = False
, optReferenceLinks = False
, optWrapText = True
, optSanitizeHTML = False
, optPlugins = []
, optEmailObfuscation = JavascriptObfuscation
, optIdentifierPrefix = ""
, optIndentedCodeClasses = []
, optDataDir = Nothing
#ifdef _CITEPROC
, optBiblioFile = []
, optBiblioFormat = []
, optCslFile = []
#endif
}
-- | A list of functions, each transforming the options data structure
-- in response to a command-line option.
options :: [OptDescr (Opt -> IO Opt)]
options =
[ Option "fr" ["from","read"]
(ReqArg
(\arg opt -> return opt { optReader = map toLower arg })
"FORMAT")
"" -- ("(" ++ (intercalate ", " $ map fst readers) ++ ")")
, Option "tw" ["to","write"]
(ReqArg
(\arg opt -> return opt { optWriter = map toLower arg })
"FORMAT")
"" -- ("(" ++ (intercalate ", " $ map fst writers) ++ ")")
, Option "s" ["standalone"]
(NoArg
(\opt -> return opt { optStandalone = True }))
"" -- "Include needed header and footer on output"
, Option "o" ["output"]
(ReqArg
(\arg opt -> return opt { optOutputFile = arg })
"FILENAME")
"" -- "Name of output file"
, Option "p" ["preserve-tabs"]
(NoArg
(\opt -> return opt { optPreserveTabs = True }))
"" -- "Preserve tabs instead of converting to spaces"
, Option "" ["tab-stop"]
(ReqArg
(\arg opt -> return opt { optTabStop = (read arg) } )
"TABSTOP")
"" -- "Tab stop (default 4)"
, Option "" ["strict"]
(NoArg
(\opt -> return opt { optStrict = True } ))
"" -- "Disable markdown syntax extensions"
, Option "" ["reference-links"]
(NoArg
(\opt -> return opt { optReferenceLinks = True } ))
"" -- "Use reference links in parsing HTML"
, Option "R" ["parse-raw"]
(NoArg
(\opt -> return opt { optParseRaw = True }))
"" -- "Parse untranslatable HTML codes and LaTeX environments as raw"
, Option "S" ["smart"]
(NoArg
(\opt -> return opt { optSmart = True }))
"" -- "Use smart quotes, dashes, and ellipses"
, Option "m" ["latexmathml", "asciimathml"]
(OptArg
(\arg opt ->
return opt { optHTMLMathMethod = LaTeXMathML arg })
"URL")
"" -- "Use LaTeXMathML script in html output"
, Option "" ["mimetex"]
(OptArg
(\arg opt -> return opt { optHTMLMathMethod = MimeTeX
(fromMaybe "/cgi-bin/mimetex.cgi" arg)})
"URL")
"" -- "Use mimetex for HTML math"
, Option "" ["jsmath"]
(OptArg
(\arg opt -> return opt { optHTMLMathMethod = JsMath arg})
"URL")
"" -- "Use jsMath for HTML math"
, Option "" ["gladtex"]
(NoArg
(\opt -> return opt { optHTMLMathMethod = GladTeX }))
"" -- "Use gladtex for HTML math"
, Option "i" ["incremental"]
(NoArg
(\opt -> return opt { optIncremental = True }))
"" -- "Make list items display incrementally in S5"
, Option "" ["xetex"]
(NoArg
(\opt -> return opt { optXeTeX = True }))
"" -- "Format latex for processing by XeTeX"
, Option "N" ["number-sections"]
(NoArg
(\opt -> return opt { optNumberSections = True }))
"" -- "Number sections in LaTeX"
, Option "" ["no-wrap"]
(NoArg
(\opt -> return opt { optWrapText = False }))
"" -- "Do not wrap text in output"
, Option "" ["sanitize-html"]
(NoArg
(\opt -> return opt { optSanitizeHTML = True }))
"" -- "Sanitize HTML"
, Option "" ["email-obfuscation"]
(ReqArg
(\arg opt -> do
method <- case arg of
"references" -> return ReferenceObfuscation
"javascript" -> return JavascriptObfuscation
"none" -> return NoObfuscation
_ -> hPutStrLn stderr ("Error: Unknown obfuscation method: " ++ arg) >>
exitWith (ExitFailure 6)
return opt { optEmailObfuscation = method })
"none|javascript|references")
"" -- "Method for obfuscating email in HTML"
, Option "" ["id-prefix"]
(ReqArg
(\arg opt -> return opt { optIdentifierPrefix = arg })
"STRING")
"" -- "Prefix to add to automatically generated HTML identifiers"
, Option "" ["indented-code-classes"]
(ReqArg
(\arg opt -> return opt { optIndentedCodeClasses = words $
map (\c -> if c == ',' then ' ' else c) arg })
"STRING")
"" -- "Classes (whitespace- or comma-separated) to use for indented code-blocks"
, Option "" ["toc", "table-of-contents"]
(NoArg
(\opt -> return opt { optTableOfContents = True }))
"" -- "Include table of contents"
, Option "" ["base-header-level"]
(ReqArg
(\arg opt -> do
if all isDigit arg && (read arg :: Int) >= 1
then do
let oldTransforms = optTransforms opt
let shift = read arg - 1
return opt{ optTransforms =
headerShift shift : oldTransforms }
else do
hPutStrLn stderr $ "base-header-level must be a number >= 1"
exitWith $ ExitFailure 19)
"LEVEL")
"" -- "Headers base level"
, Option "" ["template"]
(ReqArg
(\arg opt -> do
text <- readFile arg
return opt{ optTemplate = text,
optStandalone = True })
"FILENAME")
"" -- "Use custom template"
, Option "V" ["variable"]
(ReqArg
(\arg opt ->
case break (`elem` ":=") arg of
(k,_:v) -> do
let newvars = optVariables opt ++ [(k,v)]
return opt{ optVariables = newvars }
_ -> do
hPutStrLn stderr $ "Could not parse `" ++ arg ++ "' as a key/value pair (k=v or k:v)"
exitWith $ ExitFailure 17)
"FILENAME")
"" -- "Use custom template"
, Option "c" ["css"]
(ReqArg
(\arg opt -> do
-- add new link to end, so it is included in proper order
let newvars = optVariables opt ++ [("css",arg)]
return opt { optVariables = newvars,
optStandalone = True })
"URL")
"" -- "Link to CSS style sheet"
, Option "H" ["include-in-header"]
(ReqArg
(\arg opt -> do
text <- readFile arg
-- add new ones to end, so they're included in order specified
let newvars = optVariables opt ++ [("header-includes",text)]
return opt { optVariables = newvars,
optStandalone = True })
"FILENAME")
"" -- "File to include at end of header (implies -s)"
, Option "B" ["include-before-body"]
(ReqArg
(\arg opt -> do
text <- readFile arg
-- add new ones to end, so they're included in order specified
let newvars = optVariables opt ++ [("include-before",text)]
return opt { optVariables = newvars,
optStandalone = True })
"FILENAME")
"" -- "File to include before document body"
, Option "A" ["include-after-body"]
(ReqArg
(\arg opt -> do
text <- readFile arg
-- add new ones to end, so they're included in order specified
let newvars = optVariables opt ++ [("include-after",text)]
return opt { optVariables = newvars,
optStandalone = True })
"FILENAME")
"" -- "File to include after document body"
, Option "C" ["custom-header"]
(ReqArg
(\arg opt -> do
text <- readFile arg
let newVars = ("legacy-header", text) : optVariables opt
return opt { optVariables = newVars
, optStandalone = True })
"FILENAME")
"" -- "File to use for custom header (implies -s)"
, Option "T" ["title-prefix"]
(ReqArg
(\arg opt -> do
let newvars = ("title-prefix", arg) : optVariables opt
return opt { optVariables = newvars,
optStandalone = True })
"STRING")
"" -- "String to prefix to HTML window title"
, Option "" ["reference-odt"]
(ReqArg
(\arg opt -> do
return opt { optReferenceODT = Just arg })
"FILENAME")
"" -- "Path of custom reference.odt"
, Option "D" ["print-default-template"]
(ReqArg
(\arg _ -> do
templ <- getDefaultTemplate Nothing arg
case templ of
Right t -> hPutStr stdout t
Left e -> error $ show e
exitWith ExitSuccess)
"FORMAT")
"" -- "Print default template for FORMAT"
#ifdef _CITEPROC
, Option "" ["biblio"]
(ReqArg
(\arg opt -> return opt { optBiblioFile = arg} )
"FILENAME")
""
, Option "" ["biblio-format"]
(ReqArg
(\arg opt -> return opt { optBiblioFormat = arg} )
"STRING")
""
, Option "" ["csl"]
(ReqArg
(\arg opt -> return opt { optCslFile = arg} )
"FILENAME")
""
#endif
, Option "" ["data-dir"]
(ReqArg
(\arg opt -> return opt { optDataDir = Just arg })
"DIRECTORY") -- "Directory containing pandoc data files."
""
, Option "" ["dump-args"]
(NoArg
(\opt -> return opt { optDumpArgs = True }))
"" -- "Print output filename and arguments to stdout."
, Option "" ["ignore-args"]
(NoArg
(\opt -> return opt { optIgnoreArgs = True }))
"" -- "Ignore command-line arguments."
, Option "v" ["version"]
(NoArg
(\_ -> do
prg <- getProgName
hPutStrLn stdout (prg ++ " " ++ pandocVersion ++ compileInfo ++
copyrightMessage)
exitWith ExitSuccess ))
"" -- "Print version"
, Option "h" ["help"]
(NoArg
(\_ -> do
prg <- getProgName
hPutStr stdout (usageMessage prg options)
exitWith ExitSuccess ))
"" -- "Show help"
]
-- Returns usage message
usageMessage :: String -> [OptDescr (Opt -> IO Opt)] -> String
usageMessage programName = usageInfo
(programName ++ " [OPTIONS] [FILES]" ++ "\nInput formats: " ++
(intercalate ", " $ map fst readers) ++ "\nOutput formats: " ++
(intercalate ", " $ map fst writers) ++ "\nOptions:")
-- Determine default reader based on source file extensions
defaultReaderName :: String -> [FilePath] -> String
defaultReaderName fallback [] = fallback
defaultReaderName fallback (x:xs) =
case takeExtension (map toLower x) of
".xhtml" -> "html"
".html" -> "html"
".htm" -> "html"
".tex" -> "latex"
".latex" -> "latex"
".ltx" -> "latex"
".rst" -> "rst"
".lhs" -> "markdown+lhs"
".native" -> "native"
_ -> defaultReaderName fallback xs
-- Returns True if extension of first source is .lhs
lhsExtension :: [FilePath] -> Bool
lhsExtension (x:_) = takeExtension x == ".lhs"
lhsExtension _ = False
-- Determine default writer based on output file extension
defaultWriterName :: FilePath -> String
defaultWriterName "-" = "html" -- no output file
defaultWriterName x =
case takeExtension (map toLower x) of
"" -> "markdown" -- empty extension
".tex" -> "latex"
".latex" -> "latex"
".ltx" -> "latex"
".context" -> "context"
".ctx" -> "context"
".rtf" -> "rtf"
".rst" -> "rst"
".s5" -> "s5"
".native" -> "native"
".txt" -> "markdown"
".text" -> "markdown"
".md" -> "markdown"
".markdown" -> "markdown"
".lhs" -> "markdown+lhs"
".texi" -> "texinfo"
".texinfo" -> "texinfo"
".db" -> "docbook"
".odt" -> "odt"
['.',y] | y `elem` ['1'..'9'] -> "man"
_ -> "html"
main :: IO ()
main = do
rawArgs <- getArgs
prg <- getProgName
let compatMode = (prg == "hsmarkdown")
let (actions, args, errors) = if compatMode
then ([], rawArgs, [])
else getOpt Permute options rawArgs
unless (null errors) $
do name <- getProgName
mapM_ (\e -> hPutStr stderr (name ++ ": ") >> hPutStr stderr e) errors
hPutStrLn stderr $ "Try " ++ name ++ " --help for more information."
exitWith $ ExitFailure 2
let defaultOpts' = if compatMode
then defaultOpts { optReader = "markdown"
, optWriter = "html"
, optStrict = True }
else defaultOpts
-- thread option data structure through all supplied option actions
opts <- foldl (>>=) (return defaultOpts') actions
let Opt { optTabStop = tabStop
, optPreserveTabs = preserveTabs
, optStandalone = standalone
, optReader = readerName
, optWriter = writerName
, optParseRaw = parseRaw
, optVariables = variables
, optBefore = befores
, optAfter = afters
, optTableOfContents = toc
, optTransforms = transforms
, optTemplate = template
, optOutputFile = outputFile
, optNumberSections = numberSections
, optIncremental = incremental
, optXeTeX = xetex
, optSmart = smart
, optHTMLMathMethod = mathMethod
, optReferenceODT = referenceODT
, optDumpArgs = dumpArgs
, optIgnoreArgs = ignoreArgs
, optStrict = strict
, optReferenceLinks = referenceLinks
, optWrapText = wrap
, optSanitizeHTML = sanitize
, optEmailObfuscation = obfuscationMethod
, optIdentifierPrefix = idPrefix
, optIndentedCodeClasses = codeBlockClasses
, optDataDir = mbDataDir
#ifdef _CITEPROC
, optBiblioFile = biblioFile
, optBiblioFormat = biblioFormat
, optCslFile = cslFile
#endif
} = opts
when dumpArgs $
do hPutStrLn stdout outputFile
mapM_ (\arg -> hPutStrLn stdout arg) args
exitWith ExitSuccess
-- warn about deprecated options
case lookup "legacy-header" variables of
Just _ -> hPutStrLn stderr $
"Warning: The -C/--custom-header is deprecated.\n" ++
"Please transition to using --template instead."
Nothing -> return ()
let sources = if ignoreArgs then [] else args
datadir <- case mbDataDir of
Nothing -> catch
(liftM Just $ getAppUserDataDirectory "pandoc")
(const $ return Nothing)
Just _ -> return mbDataDir
-- assign reader and writer based on options and filenames
let readerName' = if null readerName
then let fallback = if any isURI sources
then "html"
else "markdown"
in defaultReaderName fallback sources
else readerName
let writerName' = if null writerName
then defaultWriterName outputFile
else writerName
reader <- case (lookup readerName' readers) of
Just r -> return r
Nothing -> error ("Unknown reader: " ++ readerName')
writer <- case (lookup writerName' writers) of
Just r -> return r
Nothing -> error ("Unknown writer: " ++ writerName')
templ <- getDefaultTemplate datadir writerName'
let defaultTemplate = case templ of
Right t -> t
Left e -> error (show e)
environment <- getEnvironment
let columns = case lookup "COLUMNS" environment of
Just cols -> read cols
Nothing -> stateColumns defaultParserState
let standalone' = standalone || isNonTextOutput writerName'
#ifdef _CITEPROC
refs <- if null biblioFile then return [] else readBiblioFile biblioFile biblioFormat
#endif
variables' <- if writerName' == "s5" && standalone'
then do
inc <- s5HeaderIncludes datadir
return $ ("header-includes", inc) : variables
else return variables
variables'' <- case mathMethod of
LaTeXMathML Nothing -> do
s <- latexMathMLScript datadir
return $ ("latexmathml-script", s) : variables'
_ -> return variables'
let startParserState =
defaultParserState { stateParseRaw = parseRaw,
stateTabStop = tabStop,
stateSanitizeHTML = sanitize,
stateLiterateHaskell = "+lhs" `isSuffixOf` readerName' ||
lhsExtension sources,
stateStandalone = standalone',
#ifdef _CITEPROC
stateCitations = map citeKey refs,
#endif
stateSmart = smart || writerName' `elem`
["latex", "context", "man"],
stateColumns = columns,
stateStrict = strict,
stateIndentedCodeClasses = codeBlockClasses }
let writerOptions = WriterOptions { writerStandalone = standalone',
writerTemplate = if null template
then defaultTemplate
else template,
writerVariables = variables'',
writerIncludeBefore = concat befores,
writerIncludeAfter = concat afters,
writerTabStop = tabStop,
writerTableOfContents = toc &&
writerName' /= "s5",
writerHTMLMathMethod = mathMethod,
writerS5 = (writerName' == "s5"),
writerXeTeX = xetex,
writerIgnoreNotes = False,
writerIncremental = incremental,
writerNumberSections = numberSections,
writerStrictMarkdown = strict,
writerReferenceLinks = referenceLinks,
writerWrapText = wrap,
writerLiterateHaskell = "+lhs" `isSuffixOf` writerName' ||
lhsExtension [outputFile],
writerEmailObfuscation = if strict
then ReferenceObfuscation
else obfuscationMethod,
writerIdentifierPrefix = idPrefix }
when (isNonTextOutput writerName' && outputFile == "-") $
do hPutStrLn stderr ("Error: Cannot write " ++ writerName ++ " output to stdout.\n" ++
"Specify an output file using the -o option.")
exitWith $ ExitFailure 5
let sourceDirRelative = if null sources
then ""
else takeDirectory (head sources)
let readSources [] = mapM readSource ["-"]
readSources srcs = mapM readSource srcs
readSource "-" = getContents
readSource src = case parseURI src of
Just u -> readURI u
Nothing -> readFile src
readURI uri = simpleHTTP (mkRequest GET uri) >>= getResponseBody >>=
return . toString -- treat all as UTF8
let convertTabs = tabFilter (if preserveTabs then 0 else tabStop)
doc <- fmap (reader startParserState . convertTabs . intercalate "\n") (readSources sources)
let doc' = foldr ($) doc transforms
doc'' <- do
#ifdef _CITEPROC
processBiblio cslFile refs doc'
#else
return doc'
#endif
let writerOutput = writer writerOptions doc'' ++ "\n"
case writerName' of
"odt" -> saveOpenDocumentAsODT datadir outputFile sourceDirRelative referenceODT writerOutput
_ -> if outputFile == "-"
then putStr writerOutput
else writeFile outputFile writerOutput