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pandoc.hs
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pandoc.hs
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{-# LANGUAGE CPP #-}
{-
Copyright (C) 2006-2013 John MacFarlane <[email protected]>
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) 2006-2013 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.PDF (tex2pdf)
import Text.Pandoc.Readers.LaTeX (handleIncludes)
import Text.Pandoc.Shared ( tabFilter, readDataFileUTF8, safeRead,
headerShift, normalize, err, warn )
import Text.Pandoc.XML ( toEntities, fromEntities )
import Text.Pandoc.SelfContained ( makeSelfContained )
import Text.Highlighting.Kate ( languages, Style, tango, pygments,
espresso, zenburn, kate, haddock, monochrome )
import System.Environment ( getArgs, getProgName )
import System.Exit ( exitWith, ExitCode (..) )
import System.FilePath
import System.Console.GetOpt
import Data.Char ( toLower )
import Data.List ( intercalate, isPrefixOf )
import System.Directory ( getAppUserDataDirectory, doesFileExist, findExecutable )
import System.IO ( stdout )
import System.IO.Error ( isDoesNotExistError )
import qualified Control.Exception as E
import Control.Exception.Extensible ( throwIO )
import qualified Text.Pandoc.UTF8 as UTF8
import qualified Text.CSL as CSL
import Control.Monad (when, unless, liftM)
import Network.HTTP (simpleHTTP, mkRequest, getResponseBody, RequestMethod(..))
import Network.URI (parseURI, isURI, URI(..))
import qualified Data.ByteString.Lazy as B
import Text.CSL.Reference (Reference(..))
copyrightMessage :: String
copyrightMessage = "\nCopyright (C) 2006-2013 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 =
"\nCompiled with citeproc-hs " ++ VERSION_citeproc_hs ++ ", texmath " ++
VERSION_texmath ++ ", highlighting-kate " ++ VERSION_highlighting_kate ++
".\nSyntax highlighting is supported for the following languages:\n " ++
wrapWords 4 78
[map toLower l | l <- languages, l /= "Alert" && l /= "Alert_indent"]
-- | 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 -> Int -> [String] -> String
wrapWords indent c = wrap' (c - indent) (c - indent)
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" ++ replicate indent ' ' ++ x ++ wrap' cols (cols - length x) xs
else ", " ++ x ++ wrap' cols (remaining - (length x + 2)) xs
isTextFormat :: String -> Bool
isTextFormat s = takeWhile (`notElem` "+-") s `notElem` ["odt","docx","epub","epub3"]
-- | 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 :: Maybe FilePath -- ^ Custom template
, optVariables :: [(String,String)] -- ^ Template variables to set
, optOutputFile :: String -- ^ Name of output file
, optNumberSections :: Bool -- ^ Number sections in LaTeX
, optNumberOffset :: [Int] -- ^ Starting number for sections
, optSectionDivs :: Bool -- ^ Put sections in div tags in HTML
, optIncremental :: Bool -- ^ Use incremental lists in Slidy/Slideous/S5
, optSelfContained :: Bool -- ^ Make HTML accessible offline
, optSmart :: Bool -- ^ Use smart typography
, optOldDashes :: Bool -- ^ Parse dashes like pandoc <=1.8.2.1
, optHtml5 :: Bool -- ^ Produce HTML5 in HTML
, optHtmlQTags :: Bool -- ^ Use <q> tags in HTML
, optHighlight :: Bool -- ^ Highlight source code
, optHighlightStyle :: Style -- ^ Style to use for highlighted code
, optChapters :: Bool -- ^ Use chapter for top-level sects
, optHTMLMathMethod :: HTMLMathMethod -- ^ Method to print HTML math
, optReferenceODT :: Maybe FilePath -- ^ Path of reference.odt
, optReferenceDocx :: Maybe FilePath -- ^ Path of reference.docx
, optEpubStylesheet :: Maybe String -- ^ EPUB stylesheet
, optEpubMetadata :: String -- ^ EPUB metadata
, optEpubFonts :: [FilePath] -- ^ EPUB fonts to embed
, optEpubChapterLevel :: Int -- ^ Header level at which to split chapters
, optTOCDepth :: Int -- ^ Number of levels to include in TOC
, optDumpArgs :: Bool -- ^ Output command-line arguments
, optIgnoreArgs :: Bool -- ^ Ignore command-line arguments
, optReferenceLinks :: Bool -- ^ Use reference links in writing markdown, rst
, optWrapText :: Bool -- ^ Wrap text
, optColumns :: Int -- ^ Line length in characters
, optPlugins :: [Pandoc -> IO Pandoc] -- ^ Plugins to apply
, optEmailObfuscation :: ObfuscationMethod
, optIdentifierPrefix :: String
, optIndentedCodeClasses :: [String] -- ^ Default classes for indented code blocks
, optDataDir :: Maybe FilePath
, optCiteMethod :: CiteMethod -- ^ Method to output cites
, optBibliography :: [String]
, optCslFile :: Maybe FilePath
, optAbbrevsFile :: Maybe FilePath
, optListings :: Bool -- ^ Use listings package for code blocks
, optLaTeXEngine :: String -- ^ Program to use for latex -> pdf
, optSlideLevel :: Maybe Int -- ^ Header level that creates slides
, optSetextHeaders :: Bool -- ^ Use atx headers for markdown level 1-2
, optAscii :: Bool -- ^ Use ascii characters only in html
, optTeXLigatures :: Bool -- ^ Use TeX ligatures for quotes/dashes
, optDefaultImageExtension :: String -- ^ Default image extension
}
-- | 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 = Nothing
, optVariables = []
, optOutputFile = "-" -- "-" means stdout
, optNumberSections = False
, optNumberOffset = [0,0,0,0,0,0]
, optSectionDivs = False
, optIncremental = False
, optSelfContained = False
, optSmart = False
, optOldDashes = False
, optHtml5 = False
, optHtmlQTags = False
, optHighlight = True
, optHighlightStyle = pygments
, optChapters = False
, optHTMLMathMethod = PlainMath
, optReferenceODT = Nothing
, optReferenceDocx = Nothing
, optEpubStylesheet = Nothing
, optEpubMetadata = ""
, optEpubFonts = []
, optEpubChapterLevel = 1
, optTOCDepth = 3
, optDumpArgs = False
, optIgnoreArgs = False
, optReferenceLinks = False
, optWrapText = True
, optColumns = 72
, optPlugins = []
, optEmailObfuscation = JavascriptObfuscation
, optIdentifierPrefix = ""
, optIndentedCodeClasses = []
, optDataDir = Nothing
, optCiteMethod = Citeproc
, optBibliography = []
, optCslFile = Nothing
, optAbbrevsFile = Nothing
, optListings = False
, optLaTeXEngine = "pdflatex"
, optSlideLevel = Nothing
, optSetextHeaders = True
, optAscii = False
, optTeXLigatures = True
, optDefaultImageExtension = ""
}
-- | 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")
""
, Option "tw" ["to","write"]
(ReqArg
(\arg opt -> return opt { optWriter = map toLower arg })
"FORMAT")
""
, Option "o" ["output"]
(ReqArg
(\arg opt -> return opt { optOutputFile = arg })
"FILENAME")
"" -- "Name of output file"
, Option "" ["data-dir"]
(ReqArg
(\arg opt -> return opt { optDataDir = Just arg })
"DIRECTORY") -- "Directory containing pandoc data files."
""
, Option "" ["strict"]
(NoArg
(\opt -> do
err 59 $ "The --strict option has been removed.\n" ++
"Use `markdown_strict' input or output format instead."
return opt ))
"" -- "Disable markdown syntax extensions"
, 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 "" ["old-dashes"]
(NoArg
(\opt -> return opt { optSmart = True
, optOldDashes = True }))
"" -- "Use smart quotes, dashes, and ellipses"
, Option "" ["base-header-level"]
(ReqArg
(\arg opt ->
case safeRead arg of
Just t | t > 0 -> do
let oldTransforms = optTransforms opt
let shift = t - 1
return opt{ optTransforms =
headerShift shift : oldTransforms }
_ -> err 19
"base-header-level must be a number > 0")
"NUMBER")
"" -- "Headers base level"
, 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 "" ["normalize"]
(NoArg
(\opt -> return opt { optTransforms =
normalize : optTransforms opt } ))
"" -- "Normalize the Pandoc AST"
, Option "p" ["preserve-tabs"]
(NoArg
(\opt -> return opt { optPreserveTabs = True }))
"" -- "Preserve tabs instead of converting to spaces"
, Option "" ["tab-stop"]
(ReqArg
(\arg opt ->
case safeRead arg of
Just t | t > 0 -> return opt { optTabStop = t }
_ -> err 31
"tab-stop must be a number greater than 0")
"NUMBER")
"" -- "Tab stop (default 4)"
, Option "s" ["standalone"]
(NoArg
(\opt -> return opt { optStandalone = True }))
"" -- "Include needed header and footer on output"
, Option "" ["template"]
(ReqArg
(\arg opt -> do
return opt{ optTemplate = Just arg,
optStandalone = True })
"FILENAME")
"" -- "Use custom template"
, Option "V" ["variable"]
(ReqArg
(\arg opt -> do
let (key,val) = case break (`elem` ":=") arg of
(k,_:v) -> (k,v)
(k,_) -> (k,"true")
return opt{ optVariables = (key,val) : optVariables opt })
"KEY[:VALUE]")
"" -- "Use custom template"
, Option "D" ["print-default-template"]
(ReqArg
(\arg _ -> do
templ <- getDefaultTemplate Nothing arg
case templ of
Right t -> UTF8.hPutStr stdout t
Left e -> error $ show e
exitWith ExitSuccess)
"FORMAT")
"" -- "Print default template for FORMAT"
, Option "" ["no-wrap"]
(NoArg
(\opt -> return opt { optWrapText = False }))
"" -- "Do not wrap text in output"
, Option "" ["columns"]
(ReqArg
(\arg opt ->
case safeRead arg of
Just t | t > 0 -> return opt { optColumns = t }
_ -> err 33 $
"columns must be a number greater than 0")
"NUMBER")
"" -- "Length of line in characters"
, Option "" ["toc", "table-of-contents"]
(NoArg
(\opt -> return opt { optTableOfContents = True }))
"" -- "Include table of contents"
, Option "" ["toc-depth"]
(ReqArg
(\arg opt -> do
case safeRead arg of
Just t | t >= 1 && t <= 6 ->
return opt { optTOCDepth = t,
optTableOfContents = True }
_ -> err 57 $
"TOC level must be a number between 1 and 6")
"NUMBER")
"" -- "Number of levels to include in TOC"
, Option "" ["no-highlight"]
(NoArg
(\opt -> return opt { optHighlight = False }))
"" -- "Don't highlight source code"
, Option "" ["highlight-style"]
(ReqArg
(\arg opt -> do
newStyle <- case map toLower arg of
"pygments" -> return pygments
"tango" -> return tango
"espresso" -> return espresso
"zenburn" -> return zenburn
"kate" -> return kate
"monochrome" -> return monochrome
"haddock" -> return haddock
_ -> err 39 $
"Unknown style :" ++ arg
return opt{ optHighlightStyle = newStyle })
"STYLE")
"" -- "Style for highlighted code"
, Option "H" ["include-in-header"]
(ReqArg
(\arg opt -> do
text <- UTF8.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 <- UTF8.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 <- UTF8.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 "" ["self-contained"]
(NoArg
(\opt -> return opt { optSelfContained = True,
optVariables = ("slidy-url","slidy") :
optVariables opt,
optStandalone = True }))
"" -- "Make slide shows include all the needed js and css"
, Option "" ["offline"]
(NoArg
(\opt -> do warn $ "--offline is deprecated. Use --self-contained instead."
return opt { optSelfContained = True,
optStandalone = True }))
"" -- "Make slide shows include all the needed js and css"
-- deprecated synonym for --self-contained
, Option "5" ["html5"]
(NoArg
(\opt -> do
warn $ "--html5 is deprecated. "
++ "Use the html5 output format instead."
return opt { optHtml5 = True }))
"" -- "Produce HTML5 in HTML output"
, Option "" ["html-q-tags"]
(NoArg
(\opt -> do
return opt { optHtmlQTags = True }))
"" -- "Use <q> tags for quotes in HTML"
, Option "" ["ascii"]
(NoArg
(\opt -> return opt { optAscii = True }))
"" -- "Use ascii characters only in HTML output"
, Option "" ["reference-links"]
(NoArg
(\opt -> return opt { optReferenceLinks = True } ))
"" -- "Use reference links in parsing HTML"
, Option "" ["atx-headers"]
(NoArg
(\opt -> return opt { optSetextHeaders = False } ))
"" -- "Use atx-style headers for markdown"
, Option "" ["chapters"]
(NoArg
(\opt -> return opt { optChapters = True }))
"" -- "Use chapter for top-level sections in LaTeX, DocBook"
, Option "N" ["number-sections"]
(NoArg
(\opt -> return opt { optNumberSections = True }))
"" -- "Number sections in LaTeX"
, Option "" ["number-offset"]
(ReqArg
(\arg opt ->
case safeRead ('[':arg ++ "]") of
Just ns -> return opt { optNumberOffset = ns,
optNumberSections = True }
_ -> err 57 "could not parse number-offset")
"NUMBERS")
"" -- "Starting number for sections, subsections, etc."
, Option "" ["no-tex-ligatures"]
(NoArg
(\opt -> return opt { optTeXLigatures = False }))
"" -- "Don't use tex ligatures for quotes, dashes"
, Option "" ["listings"]
(NoArg
(\opt -> return opt { optListings = True }))
"" -- "Use listings package for LaTeX code blocks"
, Option "i" ["incremental"]
(NoArg
(\opt -> return opt { optIncremental = True }))
"" -- "Make list items display incrementally in Slidy/Slideous/S5"
, Option "" ["slide-level"]
(ReqArg
(\arg opt -> do
case safeRead arg of
Just t | t >= 1 && t <= 6 ->
return opt { optSlideLevel = Just t }
_ -> err 39 $
"slide level must be a number between 1 and 6")
"NUMBER")
"" -- "Force header level for slides"
, Option "" ["section-divs"]
(NoArg
(\opt -> return opt { optSectionDivs = True }))
"" -- "Put sections in div tags in HTML"
, Option "" ["default-image-extension"]
(ReqArg
(\arg opt -> return opt { optDefaultImageExtension = arg })
"extension")
"" -- "Default extension for extensionless images"
, Option "" ["email-obfuscation"]
(ReqArg
(\arg opt -> do
method <- case arg of
"references" -> return ReferenceObfuscation
"javascript" -> return JavascriptObfuscation
"none" -> return NoObfuscation
_ -> err 6
("Unknown obfuscation method: " ++ arg)
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 "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 "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 "" ["reference-odt"]
(ReqArg
(\arg opt -> do
return opt { optReferenceODT = Just arg })
"FILENAME")
"" -- "Path of custom reference.odt"
, Option "" ["reference-docx"]
(ReqArg
(\arg opt -> do
return opt { optReferenceDocx = Just arg })
"FILENAME")
"" -- "Path of custom reference.docx"
, Option "" ["epub-stylesheet"]
(ReqArg
(\arg opt -> do
text <- UTF8.readFile arg
return opt { optEpubStylesheet = Just text })
"FILENAME")
"" -- "Path of epub.css"
, Option "" ["epub-cover-image"]
(ReqArg
(\arg opt ->
return opt { optVariables =
("epub-cover-image", arg) : optVariables opt })
"FILENAME")
"" -- "Path of epub cover image"
, Option "" ["epub-metadata"]
(ReqArg
(\arg opt -> do
text <- UTF8.readFile arg
return opt { optEpubMetadata = text })
"FILENAME")
"" -- "Path of epub metadata file"
, Option "" ["epub-embed-font"]
(ReqArg
(\arg opt -> do
return opt{ optEpubFonts = arg : optEpubFonts opt })
"FILE")
"" -- "Directory of fonts to embed"
, Option "" ["epub-chapter-level"]
(ReqArg
(\arg opt -> do
case safeRead arg of
Just t | t >= 1 && t <= 6 ->
return opt { optEpubChapterLevel = t }
_ -> err 59 $
"chapter level must be a number between 1 and 6")
"NUMBER")
"" -- "Header level at which to split chapters in EPUB"
, Option "" ["latex-engine"]
(ReqArg
(\arg opt -> do
let b = takeBaseName arg
if (b == "pdflatex" || b == "lualatex" || b == "xelatex")
then return opt { optLaTeXEngine = arg }
else err 45 "latex-engine must be pdflatex, lualatex, or xelatex.")
"PROGRAM")
"" -- "Name of latex program to use in generating PDF"
, Option "" ["bibliography"]
(ReqArg
(\arg opt -> return opt { optBibliography = (optBibliography opt) ++ [arg] })
"FILENAME")
""
, Option "" ["csl"]
(ReqArg
(\arg opt -> return opt { optCslFile = Just arg })
"FILENAME")
""
, Option "" ["citation-abbreviations"]
(ReqArg
(\arg opt -> return opt { optAbbrevsFile = Just arg })
"FILENAME")
""
, Option "" ["natbib"]
(NoArg
(\opt -> return opt { optCiteMethod = Natbib }))
"" -- "Use natbib cite commands in LaTeX output"
, Option "" ["biblatex"]
(NoArg
(\opt -> return opt { optCiteMethod = Biblatex }))
"" -- "Use biblatex cite commands in LaTeX output"
, Option "m" ["latexmathml", "asciimathml"]
(OptArg
(\arg opt ->
return opt { optHTMLMathMethod = LaTeXMathML arg })
"URL")
"" -- "Use LaTeXMathML script in html output"
, Option "" ["mathml"]
(OptArg
(\arg opt ->
return opt { optHTMLMathMethod = MathML arg })
"URL")
"" -- "Use mathml for HTML math"
, Option "" ["mimetex"]
(OptArg
(\arg opt -> do
let url' = case arg of
Just u -> u ++ "?"
Nothing -> "/cgi-bin/mimetex.cgi?"
return opt { optHTMLMathMethod = WebTeX url' })
"URL")
"" -- "Use mimetex for HTML math"
, Option "" ["webtex"]
(OptArg
(\arg opt -> do
let url' = case arg of
Just u -> u
Nothing -> "http://chart.apis.google.com/chart?cht=tx&chl="
return opt { optHTMLMathMethod = WebTeX url' })
"URL")
"" -- "Use web service for HTML math"
, Option "" ["jsmath"]
(OptArg
(\arg opt -> return opt { optHTMLMathMethod = JsMath arg})
"URL")
"" -- "Use jsMath for HTML math"
, Option "" ["mathjax"]
(OptArg
(\arg opt -> do
let url' = case arg of
Just u -> u
Nothing -> "http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
return opt { optHTMLMathMethod = MathJax url'})
"URL")
"" -- "Use MathJax for HTML math"
, Option "" ["gladtex"]
(NoArg
(\opt -> return opt { optHTMLMathMethod = GladTeX }))
"" -- "Use gladtex for HTML math"
, 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
defaultDatadir <- getAppUserDataDirectory "pandoc"
UTF8.hPutStrLn stdout (prg ++ " " ++ pandocVersion ++
compileInfo ++ "\nDefault user data directory: " ++
defaultDatadir ++ copyrightMessage)
exitWith ExitSuccess ))
"" -- "Print version"
, Option "h" ["help"]
(NoArg
(\_ -> do
prg <- getProgName
UTF8.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: " ++
(wrapWords 16 78 $ readers'names) ++ "\nOutput formats: " ++
(wrapWords 16 78 $ writers'names) ++ "\nOptions:")
where
writers'names = map fst writers
readers'names = map fst readers
-- 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"
".db" -> "docbook"
".opml" -> "opml"
".wiki" -> "mediawiki"
".textile" -> "textile"
".native" -> "native"
".json" -> "json"
_ -> 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"
".json" -> "json"
".txt" -> "markdown"
".text" -> "markdown"
".md" -> "markdown"
".markdown" -> "markdown"
".textile" -> "textile"
".lhs" -> "markdown+lhs"
".texi" -> "texinfo"
".texinfo" -> "texinfo"
".db" -> "docbook"
".odt" -> "odt"
".docx" -> "docx"
".epub" -> "epub"
".org" -> "org"
".asciidoc" -> "asciidoc"
".pdf" -> "latex"
".fb2" -> "fb2"
".opml" -> "opml"
['.',y] | y `elem` ['1'..'9'] -> "man"
_ -> "html"
main :: IO ()
main = do
rawArgs <- liftM (map UTF8.decodeArg) getArgs
prg <- getProgName
let compatMode = (prg == "hsmarkdown")
let (actions, args, errors) = if compatMode
then ([], rawArgs, [])
else getOpt Permute options rawArgs
unless (null errors) $
err 2 $ concat $ errors ++
["Try " ++ prg ++ " --help for more information."]
let defaultOpts' = if compatMode
then defaultOpts { optReader = "markdown_strict"
, optWriter = "html"
, optEmailObfuscation =
ReferenceObfuscation }
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
, optTableOfContents = toc
, optTransforms = transforms
, optTemplate = templatePath
, optOutputFile = outputFile
, optNumberSections = numberSections
, optNumberOffset = numberFrom
, optSectionDivs = sectionDivs
, optIncremental = incremental
, optSelfContained = selfContained
, optSmart = smart
, optOldDashes = oldDashes
, optHtml5 = html5
, optHtmlQTags = htmlQTags
, optHighlight = highlight
, optHighlightStyle = highlightStyle
, optChapters = chapters
, optHTMLMathMethod = mathMethod
, optReferenceODT = referenceODT
, optReferenceDocx = referenceDocx
, optEpubStylesheet = epubStylesheet
, optEpubMetadata = epubMetadata
, optEpubFonts = epubFonts
, optEpubChapterLevel = epubChapterLevel
, optTOCDepth = epubTOCDepth
, optDumpArgs = dumpArgs
, optIgnoreArgs = ignoreArgs
, optReferenceLinks = referenceLinks
, optWrapText = wrap
, optColumns = columns
, optEmailObfuscation = obfuscationMethod
, optIdentifierPrefix = idPrefix
, optIndentedCodeClasses = codeBlockClasses
, optDataDir = mbDataDir
, optBibliography = reffiles
, optCslFile = mbCsl
, optAbbrevsFile = cslabbrevs
, optCiteMethod = citeMethod
, optListings = listings
, optLaTeXEngine = latexEngine
, optSlideLevel = slideLevel
, optSetextHeaders = setextHeaders
, optAscii = ascii
, optTeXLigatures = texLigatures
, optDefaultImageExtension = defaultImageExtension
} = opts
when dumpArgs $
do UTF8.hPutStrLn stdout outputFile
mapM_ (\arg -> UTF8.hPutStrLn stdout arg) args
exitWith ExitSuccess
let sources = if ignoreArgs then [] else args
datadir <- case mbDataDir of
Nothing -> E.catch
(liftM Just $ getAppUserDataDirectory "pandoc")
(\e -> let _ = (e :: E.SomeException)
in 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
let pdfOutput = map toLower (takeExtension outputFile) == ".pdf"
let laTeXOutput = "latex" `isPrefixOf` writerName' ||
"beamer" `isPrefixOf` writerName'
when pdfOutput $ do
-- make sure writer is latex or beamer
unless laTeXOutput $
err 47 $ "cannot produce pdf output with " ++ writerName' ++ " writer"
-- check for latex program
mbLatex <- findExecutable latexEngine
case mbLatex of
Nothing -> err 41 $
latexEngine ++ " not found. " ++
latexEngine ++ " is needed for pdf output."
Just _ -> return ()
reader <- case getReader readerName' of
Right r -> return r
Left e -> err 7 e
let standalone' = standalone || not (isTextFormat writerName') || pdfOutput
templ <- case templatePath of
_ | not standalone' -> return ""
Nothing -> do
deftemp <- getDefaultTemplate datadir writerName'
case deftemp of
Left e -> throwIO e
Right t -> return t
Just tp -> do
-- strip off extensions
let format = takeWhile (`notElem` "+-") writerName'
let tp' = case takeExtension tp of
"" -> tp <.> format
_ -> tp
E.catch (UTF8.readFile tp')
(\e -> if isDoesNotExistError e
then E.catch
(readDataFileUTF8 datadir
("templates" </> tp'))
(\e' -> let _ = (e' :: E.SomeException)
in throwIO e')
else throwIO e)
variables' <- case mathMethod of
LaTeXMathML Nothing -> do
s <- readDataFileUTF8 datadir
("LaTeXMathML.js")
return $ ("mathml-script", s) : variables
MathML Nothing -> do
s <- readDataFileUTF8 datadir
("MathMLinHTML.js")
return $ ("mathml-script", s) : variables
_ -> return variables
variables'' <- if "dzslides" `isPrefixOf` writerName'
then do
dztempl <- readDataFileUTF8 datadir
("dzslides" </> "template.html")
let dzcore = unlines $ dropWhile (not . isPrefixOf "<!-- {{{{ dzslides core")
$ lines dztempl
return $ ("dzslides-core", dzcore) : variables'
else return variables'
-- unescape reference ids, which may contain XML entities, so
-- that we can do lookups with regular string equality
let unescapeRefId ref = ref{ refId = fromEntities (refId ref) }
refs <- mapM (\f -> E.catch (CSL.readBiblioFile f)
(\e -> let _ = (e :: E.SomeException)
in err 23 $ "Error reading bibliography `" ++ f ++
"'" ++ "\n" ++ show e))
reffiles >>=
return . map unescapeRefId . concat
mbsty <- if citeMethod == Citeproc && not (null refs)
then do
csl <- CSL.parseCSL =<<
case mbCsl of
Nothing -> readDataFileUTF8 datadir
"default.csl"
Just cslfile -> do
exists <- doesFileExist cslfile
if exists
then UTF8.readFile cslfile
else do
csldir <- getAppUserDataDirectory "csl"