Cabal file changes.

* Remove executable and library flags.
* Expose `Text.Pandoc.XML` and `Text.Pandoc.Biblio`.
* Depend on pandoc library in executable, so we don't recompile
  everything.
* Move pandoc.hs from src/ to .

1 files changed, 0 insertions, 1052 deletions

diff --git a/src/pandoc.hs b/src/pandoc.hs
deleted file mode 100644
index 7268f57f8..000000000
--- a/src/pandoc.hs
+++ /dev/null
@@ -1,1052 +0,0 @@
-{-# LANGUAGE CPP #-}
-{-
-Copyright (C) 2006-2012 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) 2006-2012 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, readDataFile, safeRead,
-                            headerShift, normalize, err, warn )
-import Text.Pandoc.XML ( toEntities, fromEntities )
-import Text.Pandoc.SelfContained ( makeSelfContained )
-import Text.Pandoc.Highlighting ( 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) 2006-2012 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 languages
-
--- | 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
-    , 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
-    , 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
-    , 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
-    }
-
--- | 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
-    , optSectionDivs       = False
-    , optIncremental       = False
-    , optSelfContained     = False
-    , optSmart             = False
-    , optOldDashes         = False
-    , optHtml5             = False
-    , optHighlight         = True
-    , optHighlightStyle    = pygments
-    , optChapters          = False
-    , optHTMLMathMethod    = PlainMath
-    , optReferenceODT      = Nothing
-    , optReferenceDocx     = Nothing
-    , optEPUBStylesheet    = Nothing
-    , optEPUBMetadata      = ""
-    , optEPUBFonts         = []
-    , 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
-    }
-
--- | 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 "" ["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 "" ["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 "" ["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 "" ["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 "" ["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
-                     UTF8.hPutStrLn stdout (prg ++ " " ++ pandocVersion ++ compileInfo ++
-                                       copyrightMessage)
-                     exitWith ExitSuccess ))
-                 "" -- "Print version"
-
-    , Option "h" ["help"]
-                 (NoArg
-                  (\_ -> do
-                     prg <- getProgName
-                     UTF8.hPutStr stdout (usageMessage prg options)
-                     exitWith ExitSuccess ))
-                 "" -- "Show help"
-
-    ]
-
-readExtension :: String -> IO Extension
-readExtension s = case safeRead ('E':'x':'t':'_':map toLower s) of
-                       Just ext -> return ext
-                       Nothing  -> err 59 $ "Unknown extension: " ++ s
-
--- 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"
-    ".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"
-    ['.',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
-              , optSectionDivs       = sectionDivs
-              , optIncremental       = incremental
-              , optSelfContained     = selfContained
-              , optSmart             = smart
-              , optOldDashes         = oldDashes
-              , optHtml5             = html5
-              , optHighlight         = highlight
-              , optHighlightStyle    = highlightStyle
-              , optChapters          = chapters
-              , optHTMLMathMethod    = mathMethod
-              , optReferenceODT      = referenceODT
-              , optReferenceDocx     = referenceDocx
-              , optEPUBStylesheet    = epubStylesheet
-              , optEPUBMetadata      = epubMetadata
-              , optEPUBFonts         = epubFonts
-              , 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
-             } = 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
-                                             (readDataFile datadir $
-                                               "templates" </> tp')
-                                             (\e' -> let _ = (e' :: E.SomeException)
-                                                     in throwIO e')
-                                       else throwIO e)
-
-  variables' <- case mathMethod of
-                      LaTeXMathML Nothing -> do
-                         s <- readDataFile datadir $ "data" </> "LaTeXMathML.js"
-                         return $ ("mathml-script", s) : variables
-                      MathML Nothing -> do
-                         s <- readDataFile datadir $ "data"</>"MathMLinHTML.js"
-                         return $ ("mathml-script", s) : variables
-                      _ -> return variables
-
-  variables'' <- if "dzslides" `isPrefixOf` writerName'
-                    then do
-                        dztempl <- readDataFile 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      -> readDataFile datadir "default.csl"
-                            Just cslfile -> do
-                                  exists <- doesFileExist cslfile
-                                  if exists
-                                     then UTF8.readFile cslfile
-                                     else do
-                                       csldir <- getAppUserDataDirectory "csl"
-                                       readDataFile (Just csldir)
-                                          (replaceExtension cslfile "csl")
-                abbrevs <- maybe (return []) CSL.readJsonAbbrevFile cslabbrevs
-                return $ Just csl { CSL.styleAbbrevs = abbrevs }
-              else return Nothing
-
-  let sourceDir = if null sources
-                     then "."
-                     else takeDirectory (head sources)
-
-  let readerOpts = def{ readerSmart = smart || (texLigatures &&
-                          (laTeXOutput || "context" `isPrefixOf` writerName'))
-                      , readerStandalone = standalone'
-                      , readerParseRaw = parseRaw
-                      , readerColumns = columns
-                      , readerTabStop = tabStop
-                      , readerOldDashes = oldDashes
-                      , readerReferences = refs
-                      , readerCitationStyle = mbsty
-                      , readerIndentedCodeClasses = codeBlockClasses
-                      , readerApplyMacros = not laTeXOutput
-                      }
-
-  let writerOptions = def { writerStandalone       = standalone',
-                            writerTemplate         = templ,
-                            writerVariables        = variables'',
-                            writerEPUBMetadata     = epubMetadata,
-                            writerTabStop          = tabStop,
-                            writerTableOfContents  = toc,
-                            writerHTMLMathMethod   = mathMethod,
-                            writerIncremental      = incremental,
-                            writerCiteMethod       = citeMethod,
-                            writerBiblioFiles      = reffiles,
-                            writerIgnoreNotes      = False,
-                            writerNumberSections   = numberSections,
-                            writerSectionDivs      = sectionDivs,
-                            writerReferenceLinks   = referenceLinks,
-                            writerWrapText         = wrap,
-                            writerColumns          = columns,
-                            writerEmailObfuscation = obfuscationMethod,
-                            writerIdentifierPrefix = idPrefix,
-                            writerSourceDirectory  = sourceDir,
-                            writerUserDataDir      = datadir,
-                            writerHtml5            = html5,
-                            writerChapters         = chapters,
-                            writerListings         = listings,
-                            writerBeamer           = False,
-                            writerSlideLevel       = slideLevel,
-                            writerHighlight        = highlight,
-                            writerHighlightStyle   = highlightStyle,
-                            writerSetextHeaders    = setextHeaders,
-                            writerTeXLigatures     = texLigatures,
-                            writerEpubStylesheet   = epubStylesheet,
-                            writerEpubFonts        = epubFonts,
-                            writerReferenceODT     = referenceODT,
-                            writerReferenceDocx    = referenceDocx
-                          }
-
-  when (not (isTextFormat writerName') && outputFile == "-") $
-    err 5 $ "Cannot write " ++ writerName' ++ " output to stdout.\n" ++
-            "Specify an output file using the -o option."
-
-  let readSources [] = mapM readSource ["-"]
-      readSources srcs = mapM readSource srcs
-      readSource "-" = UTF8.getContents
-      readSource src = case parseURI src of
-                            Just u | uriScheme u `elem` ["http:","https:"] ->
-                                       readURI u
-                            _       -> UTF8.readFile src
-      readURI uri = simpleHTTP (mkRequest GET uri) >>= getResponseBody >>=
-                      return . UTF8.toStringLazy  -- treat all as UTF8
-
-  let convertTabs = tabFilter (if preserveTabs then 0 else tabStop)
-
-  let handleIncludes' = if readerName' == "latex" || readerName' == "latex+lhs"
-                           then handleIncludes
-                           else return
-
-  doc <- (reader readerOpts) `fmap` (readSources sources >>=
-             handleIncludes' . convertTabs . intercalate "\n")
-
-  let doc0 = foldr ($) doc transforms
-
-  doc1 <- if "rtf" `isPrefixOf` writerName'
-             then bottomUpM rtfEmbedImage doc0
-             else return doc0
-
-  let writeBinary :: B.ByteString -> IO ()
-      writeBinary = B.writeFile (UTF8.encodePath outputFile)
-
-  let writerFn :: FilePath -> String -> IO ()
-      writerFn "-" = UTF8.putStr
-      writerFn f   = UTF8.writeFile f
-
-  case getWriter writerName' of
-    Left e -> err 9 e
-    Right (IOStringWriter f) -> f writerOptions doc1 >>= writerFn outputFile
-    Right (IOByteStringWriter f) -> f writerOptions doc1 >>= writeBinary
-    Right (PureStringWriter f)
-      | pdfOutput -> do
-              res <- tex2pdf latexEngine $ f writerOptions doc1
-              case res of
-                   Right pdf -> writeBinary pdf
-                   Left err' -> err 43 $ UTF8.toStringLazy err'
-      | otherwise -> selfcontain (f writerOptions doc1 ++
-                                  ['\n' | not standalone'])
-                      >>= writerFn outputFile . handleEntities
-          where htmlFormat = writerName' `elem`
-                               ["html","html+lhs","html5","html5+lhs",
-                               "s5","slidy","slideous","dzslides"]
-                selfcontain = if selfContained && htmlFormat
-                                 then makeSelfContained datadir
-                                 else return
-                handleEntities = if htmlFormat && ascii
-                                    then toEntities
-                                    else id