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authorfiddlosopher <fiddlosopher@788f1e2b-df1e-0410-8736-df70ead52e1b>2009-01-24 20:00:26 +0000
committerfiddlosopher <fiddlosopher@788f1e2b-df1e-0410-8736-df70ead52e1b>2009-01-24 20:00:26 +0000
commit42aca57dee8d88afa5fac512aeb1198102908865 (patch)
tree1c6a98bd226f4fffde6768010715bc1d80e5d168 /Text/Pandoc/Writers/RTF.hs
parent39e8d8486693029abfef84c45e85416f7c775280 (diff)
downloadpandoc-42aca57dee8d88afa5fac512aeb1198102908865.tar.gz
Moved all haskell source to src subdirectory.
git-svn-id: https://pandoc.googlecode.com/svn/trunk@1528 788f1e2b-df1e-0410-8736-df70ead52e1b
Diffstat (limited to 'Text/Pandoc/Writers/RTF.hs')
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diff --git a/Text/Pandoc/Writers/RTF.hs b/Text/Pandoc/Writers/RTF.hs
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--- a/Text/Pandoc/Writers/RTF.hs
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@@ -1,291 +0,0 @@
-{-
-Copyright (C) 2006-7 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 : Text.Pandoc.Writers.RTF
- Copyright : Copyright (C) 2006-7 John MacFarlane
- License : GNU GPL, version 2 or above
-
- Maintainer : John MacFarlane <jgm@berkeley.edu>
- Stability : alpha
- Portability : portable
-
-Conversion of 'Pandoc' documents to RTF (rich text format).
--}
-module Text.Pandoc.Writers.RTF ( writeRTF ) where
-import Text.Pandoc.Definition
-import Text.Pandoc.Shared
-import Text.Pandoc.Readers.TeXMath
-import Data.List ( isSuffixOf, intercalate )
-import Data.Char ( ord, isDigit )
-
--- | Convert Pandoc to a string in rich text format.
-writeRTF :: WriterOptions -> Pandoc -> String
-writeRTF options (Pandoc meta blocks) =
- let head' = if writerStandalone options
- then rtfHeader (writerHeader options) meta
- else ""
- toc = if writerTableOfContents options
- then tableOfContents $ filter isHeaderBlock blocks
- else ""
- foot = if writerStandalone options then "\n}\n" else ""
- body = writerIncludeBefore options ++
- concatMap (blockToRTF 0 AlignDefault) blocks ++
- writerIncludeAfter options
- in head' ++ toc ++ body ++ foot
-
--- | Construct table of contents from list of header blocks.
-tableOfContents :: [Block] -> String
-tableOfContents headers =
- let contentsTree = hierarchicalize headers
- in concatMap (blockToRTF 0 AlignDefault) $
- [Header 1 [Str "Contents"],
- BulletList (map elementToListItem contentsTree)]
-
-elementToListItem :: Element -> [Block]
-elementToListItem (Blk _) = []
-elementToListItem (Sec sectext subsecs) = [Plain sectext] ++
- if null subsecs
- then []
- else [BulletList (map elementToListItem subsecs)]
-
--- | Convert unicode characters (> 127) into rich text format representation.
-handleUnicode :: String -> String
-handleUnicode [] = []
-handleUnicode (c:cs) =
- if ord c > 127
- then '\\':'u':(show (ord c)) ++ "?" ++ handleUnicode cs
- else c:(handleUnicode cs)
-
--- | Escape special characters.
-escapeSpecial :: String -> String
-escapeSpecial = escapeStringUsing (('\t',"\\tab "):(backslashEscapes "{\\}"))
-
--- | Escape strings as needed for rich text format.
-stringToRTF :: String -> String
-stringToRTF = handleUnicode . escapeSpecial
-
--- | Escape things as needed for code block in RTF.
-codeStringToRTF :: String -> String
-codeStringToRTF str = intercalate "\\line\n" $ lines (stringToRTF str)
-
--- | Make a paragraph with first-line indent, block indent, and space after.
-rtfParSpaced :: Int -- ^ space after (in twips)
- -> Int -- ^ block indent (in twips)
- -> Int -- ^ first line indent (relative to block) (in twips)
- -> Alignment -- ^ alignment
- -> String -- ^ string with content
- -> String
-rtfParSpaced spaceAfter indent firstLineIndent alignment content =
- let alignString = case alignment of
- AlignLeft -> "\\ql "
- AlignRight -> "\\qr "
- AlignCenter -> "\\qc "
- AlignDefault -> "\\ql "
- in "{\\pard " ++ alignString ++
- "\\f0 \\sa" ++ (show spaceAfter) ++ " \\li" ++ (show indent) ++
- " \\fi" ++ (show firstLineIndent) ++ " " ++ content ++ "\\par}\n"
-
--- | Default paragraph.
-rtfPar :: Int -- ^ block indent (in twips)
- -> Int -- ^ first line indent (relative to block) (in twips)
- -> Alignment -- ^ alignment
- -> String -- ^ string with content
- -> String
-rtfPar = rtfParSpaced 180
-
--- | Compact paragraph (e.g. for compact list items).
-rtfCompact :: Int -- ^ block indent (in twips)
- -> Int -- ^ first line indent (relative to block) (in twips)
- -> Alignment -- ^ alignment
- -> String -- ^ string with content
- -> String
-rtfCompact = rtfParSpaced 0
-
--- number of twips to indent
-indentIncrement :: Int
-indentIncrement = 720
-
-listIncrement :: Int
-listIncrement = 360
-
--- | Returns appropriate bullet list marker for indent level.
-bulletMarker :: Int -> String
-bulletMarker indent = case indent `mod` 720 of
- 0 -> "\\bullet "
- _ -> "\\endash "
-
--- | Returns appropriate (list of) ordered list markers for indent level.
-orderedMarkers :: Int -> ListAttributes -> [String]
-orderedMarkers indent (start, style, delim) =
- if style == DefaultStyle && delim == DefaultDelim
- then case indent `mod` 720 of
- 0 -> orderedListMarkers (start, Decimal, Period)
- _ -> orderedListMarkers (start, LowerAlpha, Period)
- else orderedListMarkers (start, style, delim)
-
--- | Returns RTF header.
-rtfHeader :: String -- ^ header text
- -> Meta -- ^ bibliographic information
- -> String
-rtfHeader headerText (Meta title authors date) =
- let titletext = if null title
- then ""
- else rtfPar 0 0 AlignCenter $
- "\\b \\fs36 " ++ inlineListToRTF title
- authorstext = if null authors
- then ""
- else rtfPar 0 0 AlignCenter (" " ++ (intercalate "\\" $
- map stringToRTF authors))
- datetext = if date == ""
- then ""
- else rtfPar 0 0 AlignCenter (" " ++ stringToRTF date) in
- let spacer = if null (titletext ++ authorstext ++ datetext)
- then ""
- else rtfPar 0 0 AlignDefault "" in
- headerText ++ titletext ++ authorstext ++ datetext ++ spacer
-
--- | Convert Pandoc block element to RTF.
-blockToRTF :: Int -- ^ indent level
- -> Alignment -- ^ alignment
- -> Block -- ^ block to convert
- -> String
-blockToRTF _ _ Null = ""
-blockToRTF indent alignment (Plain lst) =
- rtfCompact indent 0 alignment $ inlineListToRTF lst
-blockToRTF indent alignment (Para lst) =
- rtfPar indent 0 alignment $ inlineListToRTF lst
-blockToRTF indent alignment (BlockQuote lst) =
- concatMap (blockToRTF (indent + indentIncrement) alignment) lst
-blockToRTF indent _ (CodeBlock _ str) =
- rtfPar indent 0 AlignLeft ("\\f1 " ++ (codeStringToRTF str))
-blockToRTF _ _ (RawHtml _) = ""
-blockToRTF indent alignment (BulletList lst) = spaceAtEnd $
- concatMap (listItemToRTF alignment indent (bulletMarker indent)) lst
-blockToRTF indent alignment (OrderedList attribs lst) = spaceAtEnd $ concat $
- zipWith (listItemToRTF alignment indent) (orderedMarkers indent attribs) lst
-blockToRTF indent alignment (DefinitionList lst) = spaceAtEnd $
- concatMap (definitionListItemToRTF alignment indent) lst
-blockToRTF indent _ HorizontalRule =
- rtfPar indent 0 AlignCenter "\\emdash\\emdash\\emdash\\emdash\\emdash"
-blockToRTF indent alignment (Header level lst) = rtfPar indent 0 alignment $
- "\\b \\fs" ++ (show (40 - (level * 4))) ++ " " ++ inlineListToRTF lst
-blockToRTF indent alignment (Table caption aligns sizes headers rows) =
- tableRowToRTF True indent aligns sizes headers ++
- concatMap (tableRowToRTF False indent aligns sizes) rows ++
- rtfPar indent 0 alignment (inlineListToRTF caption)
-
-tableRowToRTF :: Bool -> Int -> [Alignment] -> [Double] -> [[Block]] -> String
-tableRowToRTF header indent aligns sizes cols =
- let columns = concat $ zipWith (tableItemToRTF indent) aligns cols
- totalTwips = 6 * 1440 -- 6 inches
- rightEdges = tail $ scanl (\sofar new -> sofar + floor (new * totalTwips))
- (0 :: Integer) sizes
- cellDefs = map (\edge -> (if header
- then "\\clbrdrb\\brdrs"
- else "") ++ "\\cellx" ++ show edge)
- rightEdges
- start = "{\n\\trowd \\trgaph120\n" ++ concat cellDefs ++ "\n" ++
- "\\trkeep\\intbl\n{\n"
- end = "}\n\\intbl\\row}\n"
- in start ++ columns ++ end
-
-tableItemToRTF :: Int -> Alignment -> [Block] -> String
-tableItemToRTF indent alignment item =
- let contents = concatMap (blockToRTF indent alignment) item
- in "{\\intbl " ++ contents ++ "\\cell}\n"
-
--- | Ensure that there's the same amount of space after compact
--- lists as after regular lists.
-spaceAtEnd :: String -> String
-spaceAtEnd str =
- if isSuffixOf "\\par}\n" str
- then (take ((length str) - 6) str) ++ "\\sa180\\par}\n"
- else str
-
--- | Convert list item (list of blocks) to RTF.
-listItemToRTF :: Alignment -- ^ alignment
- -> Int -- ^ indent level
- -> String -- ^ list start marker
- -> [Block] -- ^ list item (list of blocks)
- -> [Char]
-listItemToRTF alignment indent marker [] =
- rtfCompact (indent + listIncrement) (0 - listIncrement) alignment
- (marker ++ "\\tx" ++ (show listIncrement) ++ "\\tab ")
-listItemToRTF alignment indent marker list =
- let (first:rest) = map (blockToRTF (indent + listIncrement) alignment) list
- listMarker = "\\fi" ++ show (0 - listIncrement) ++ " " ++ marker ++ "\\tx" ++
- show listIncrement ++ "\\tab"
- insertListMarker ('\\':'f':'i':'-':d:xs) | isDigit d =
- listMarker ++ dropWhile isDigit xs
- insertListMarker ('\\':'f':'i':d:xs) | isDigit d =
- listMarker ++ dropWhile isDigit xs
- insertListMarker (x:xs) =
- x : insertListMarker xs
- insertListMarker [] = []
- -- insert the list marker into the (processed) first block
- in insertListMarker first ++ concat rest
-
--- | Convert definition list item (label, list of blocks) to RTF.
-definitionListItemToRTF :: Alignment -- ^ alignment
- -> Int -- ^ indent level
- -> ([Inline],[Block]) -- ^ list item (list of blocks)
- -> [Char]
-definitionListItemToRTF alignment indent (label, items) =
- let labelText = blockToRTF indent alignment (Plain label)
- itemsText = concatMap (blockToRTF (indent + listIncrement) alignment) items
- in labelText ++ itemsText
-
--- | Convert list of inline items to RTF.
-inlineListToRTF :: [Inline] -- ^ list of inlines to convert
- -> String
-inlineListToRTF lst = concatMap inlineToRTF lst
-
--- | Convert inline item to RTF.
-inlineToRTF :: Inline -- ^ inline to convert
- -> String
-inlineToRTF (Emph lst) = "{\\i " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (Strong lst) = "{\\b " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (Strikeout lst) = "{\\strike " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (Superscript lst) = "{\\super " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (Subscript lst) = "{\\sub " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (SmallCaps lst) = "{\\scaps " ++ (inlineListToRTF lst) ++ "}"
-inlineToRTF (Quoted SingleQuote lst) =
- "\\u8216'" ++ (inlineListToRTF lst) ++ "\\u8217'"
-inlineToRTF (Quoted DoubleQuote lst) =
- "\\u8220\"" ++ (inlineListToRTF lst) ++ "\\u8221\""
-inlineToRTF Apostrophe = "\\u8217'"
-inlineToRTF Ellipses = "\\u8230?"
-inlineToRTF EmDash = "\\u8212-"
-inlineToRTF EnDash = "\\u8211-"
-inlineToRTF (Code str) = "{\\f1 " ++ (codeStringToRTF str) ++ "}"
-inlineToRTF (Str str) = stringToRTF str
-inlineToRTF (Math _ str) = inlineListToRTF $ readTeXMath str
-inlineToRTF (Cite _ lst) = inlineListToRTF lst
-inlineToRTF (TeX _) = ""
-inlineToRTF (HtmlInline _) = ""
-inlineToRTF (LineBreak) = "\\line "
-inlineToRTF Space = " "
-inlineToRTF (Link text (src, _)) =
- "{\\field{\\*\\fldinst{HYPERLINK \"" ++ (codeStringToRTF src) ++
- "\"}}{\\fldrslt{\\ul\n" ++ (inlineListToRTF text) ++ "\n}}}\n"
-inlineToRTF (Image _ (source, _)) =
- "{\\cf1 [image: " ++ source ++ "]\\cf0}"
-inlineToRTF (Note contents) =
- "{\\super\\chftn}{\\*\\footnote\\chftn\\~\\plain\\pard " ++
- (concatMap (blockToRTF 0 AlignDefault) contents) ++ "}"