module Codec.Xlsx.Writer
( fromXlsx
) where
import qualified Codec.Archive.Zip as Zip
import Control.Arrow (second)
import Control.Lens hiding (transform)
import qualified Data.ByteString.Lazy as L
import Data.ByteString.Lazy.Char8()
import Data.Map (Map)
import qualified Data.Map as M
import Data.Maybe
import Data.Monoid ((<>))
import Data.Text (Text, )
import qualified Data.Text as T
import Data.Text.Lazy (toStrict)
import Data.Text.Lazy.Builder (toLazyText)
import Data.Text.Lazy.Builder.Int
import Data.Text.Lazy.Builder.RealFloat
import qualified Data.Set as S
import Data.Vector (Vector)
import qualified Data.Vector as V
import Numeric.Search.Range (searchFromTo)
import System.Locale
import System.Time
import Text.XML
import Codec.Xlsx.Types
fromXlsx :: ClockTime -> Xlsx -> L.ByteString
fromXlsx ct xlsx =
Zip.fromArchive $ foldr Zip.addEntryToArchive Zip.emptyArchive entries
where
TOD t _ = ct
entries = Zip.toEntry "[Content_Types].xml" t (contentTypesXml files) :
map (\fd -> Zip.toEntry (T.unpack $ fdName fd) t (fdContents fd)) files
files = sheetFiles ++
[ FileData "docProps/core.xml"
"application/vnd.openxmlformats-package.core-properties+xml" $ coreXml (toUTCTime ct) "xlsxwriter"
, FileData "docProps/app.xml"
"application/vnd.openxmlformats-officedocument.extended-properties+xml" $ appXml (xlsx ^. xlSheets)
, FileData "xl/workbook.xml"
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml" $ bookXml (xlsx ^. xlSheets)
, FileData "xl/styles.xml"
"application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml" $ unStyles (xlsx ^. xlStyles)
, FileData "xl/sharedStrings.xml"
"application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml" $ ssXml $ V.toList shared
, FileData "xl/_rels/workbook.xml.rels"
"application/vnd.openxmlformats-package.relationships+xml" $ bookRelXml sheetCount
, FileData "_rels/.rels" "application/vnd.openxmlformats-package.relationships+xml" rootRelXml
]
sheetFiles =
[ FileData ("xl/worksheets/sheet" <> txti n <> ".xml")
"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml" $
sheetXml (w ^. wsColumns) (w ^. wsRowPropertiesMap) cells (w ^. wsMerges) |
(n, cells, w) <- zip3 [1..] sheetCells sheets]
sheets = xlsx ^. xlSheets . to M.elems
sheetCount = length sheets
shared = V.fromList $ S.elems $ S.fromList $ concatMap (concatMap celltext . M.elems . _wsCells) sheets
sheetCells = map (transformSheetData shared) sheets
celltext (Cell{_cellValue=v}) = case v of
Just(CellText a) -> [a]
_ -> []
data FileData = FileData { fdName :: Text
, fdContentType :: Text
, fdContents :: L.ByteString}
coreXml :: CalendarTime -> Text -> L.ByteString
coreXml created creator =
renderLBS def{rsNamespaces=nss} $ Document (Prologue [] Nothing []) root []
where
nss = [ ("cp", "http://schemas.openxmlformats.org/package/2006/metadata/core-properties")
, ("dc", "http://purl.org/dc/elements/1.1/")
, ("dcterms", "http://purl.org/dc/terms/")
, ("xsi","http://www.w3.org/2001/XMLSchema-instance")
]
namespaced = nsName nss
date = T.pack $ formatCalendarTime defaultTimeLocale "%Y-%m-%dT%H:%M:%SZ" created
root = Element (namespaced "cp" "coreProperties") M.empty
[ nEl (namespaced "dcterms" "created")
(M.fromList [(namespaced "xsi" "type", "dcterms:W3CDTF")]) [NodeContent date]
, nEl (namespaced "dc" "creator") M.empty [NodeContent creator]
, nEl (namespaced "cp" "lastModifiedBy") M.empty [NodeContent creator]
]
appXml :: Map Text Worksheet -> L.ByteString
appXml s = renderLBS def $ Document (Prologue [] Nothing []) root []
where
nsAttrs = M.fromList [("xmlns:vt", "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes")]
root = Element (extPropNm "Properties") nsAttrs
[ extPropEl "TotalTime" [NodeContent "0"]
, extPropEl "HeadingPairs" [
vTypeEl "vector" (M.fromList [("size", "2"), ("baseType", "variant")])
[ vTypeEl0 "variant"
[vTypeEl0 "lpstr" [NodeContent "Worksheets"]]
, vTypeEl0 "variant"
[vTypeEl0 "i4" [NodeContent $ txti $ M.size s]]
]
]
, extPropEl "TitlesOfParts" [
vTypeEl "vector" (M.fromList [("size", txti $ M.size s),("baseType","lpstr")]) $
map (vTypeEl0 "lpstr" . return . NodeContent) $ M.keys s
]
]
extPropNm n = nm "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" n
extPropEl n = nEl (extPropNm n) M.empty
vTypeEl0 n = vTypeEl n M.empty
vTypeEl = nEl . nm "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
data XlsxCellData = XlsxSS Int
| XlsxDouble Double
| XlsxBool Bool
deriving (Show, Eq)
data XlsxCell = XlsxCell
{ xlsxCellStyle :: Maybe Int
, xlsxCellValue :: Maybe XlsxCellData
} deriving (Show, Eq)
xlsxCellType :: XlsxCell -> Text
xlsxCellType XlsxCell{xlsxCellValue=Just(XlsxSS _)} = "s"
xlsxCellType XlsxCell{xlsxCellValue=Just(XlsxBool _)} = "b"
xlsxCellType _ = "n"
value :: XlsxCell -> Text
value XlsxCell{xlsxCellValue=Just(XlsxSS i)} = txti i
value XlsxCell{xlsxCellValue=Just(XlsxDouble d)} = txtd d
value XlsxCell{xlsxCellValue=Just(XlsxBool True)} = "1"
value XlsxCell{xlsxCellValue=Just(XlsxBool False)} = "0"
value _ = error "value undefined"
transformSheetData :: Vector Text -> Worksheet -> [(Int, [(Int, XlsxCell)])]
transformSheetData shared ws = map transformRow $ toRows (ws ^. wsCells)
where
transformRow = second (map transformCell)
transformCell (c, Cell{_cellValue=v, _cellStyle=s}) =
(c, XlsxCell s (fmap transformValue v))
transformValue (CellText t) =
let Just i = searchFromTo (\p -> shared V.! p >= t) 0 (V.length shared 1)
in XlsxSS i
transformValue (CellDouble dbl) = XlsxDouble dbl
transformValue (CellBool b) = XlsxBool b
sheetXml :: [ColumnsWidth] -> Map Int RowProperties -> [(Int, [(Int, XlsxCell)])] -> [Text]-> L.ByteString
sheetXml cws rh rows merges = renderLBS def $ Document (Prologue [] Nothing []) root []
where
cType = xlsxCellType
root = addNS "http://schemas.openxmlformats.org/spreadsheetml/2006/main" $
Element "worksheet" M.empty $ catMaybes
[nonEmptyNmEl "cols" M.empty $ map cwEl cws,
justNmEl "sheetData" M.empty $ map rowEl rows,
nonEmptyNmEl "mergeCells" M.empty $ map mergeE1 merges]
cwEl cw = NodeElement $! Element "col" (M.fromList
[("min", txti $ cwMin cw), ("max", txti $ cwMax cw), ("width", txtd $ cwWidth cw), ("style", txti $ cwStyle cw)]) []
rowEl (r, cells) = nEl "row"
(M.fromList (ht ++ s ++ [("r", txti r) ,("hidden", "false"), ("outlineLevel", "0"),
("collapsed", "false"), ("customFormat", "true"),
("customHeight", txtb hasHeight)]))
$ map (cellEl r) cells
where
(ht, hasHeight, s) = case M.lookup r rh of
Just (RowProps (Just h) (Just st)) -> ([("ht", txtd h)], True,[("s", txti st)])
Just (RowProps Nothing (Just st)) -> ([], True, [("s", txti st)])
Just (RowProps (Just h) Nothing ) -> ([("ht", txtd h)], True,[])
_ -> ([], False,[])
mergeE1 t = NodeElement $! Element "mergeCell" (M.fromList [("ref",t)]) []
cellEl r (icol, cell) =
nEl "c" (M.fromList (cellAttrs r (int2col icol) cell))
[nEl "v" M.empty [NodeContent $ value cell] | isJust $ xlsxCellValue cell]
cellAttrs r col cell = cellStyleAttr cell ++ [("r", T.concat [col, txti r]), ("t", cType cell)]
cellStyleAttr XlsxCell{xlsxCellStyle=Nothing} = []
cellStyleAttr XlsxCell{xlsxCellStyle=Just s} = [("s", txti s)]
bookXml :: Map Text Worksheet -> L.ByteString
bookXml wss = renderLBS def $ Document (Prologue [] Nothing []) root []
where
numNames = [(txti i, name) | (i, name) <- zip [1..] (M.keys wss)]
root = addNS "http://schemas.openxmlformats.org/spreadsheetml/2006/main" $ Element "workbook" M.empty
[nEl "sheets" M.empty $
map (\(n, name) -> nEl "sheet"
(M.fromList [("name", name), ("sheetId", n), ("state", "visible"),
(rId, T.concat ["rId", n])]) []) numNames]
rId = nm "http://schemas.openxmlformats.org/officeDocument/2006/relationships" "id"
ssXml :: [Text] -> L.ByteString
ssXml ss =
renderLBS def $ Document (Prologue [] Nothing []) root []
where
root = addNS "http://schemas.openxmlformats.org/spreadsheetml/2006/main" $ Element "sst" M.empty $
map (\s -> nEl "si" M.empty [nEl "t" M.empty [NodeContent s]]) ss
bookRelXml :: Int -> L.ByteString
bookRelXml n = renderLBS def $ Document (Prologue [] Nothing []) root []
where
root = addNS "http://schemas.openxmlformats.org/package/2006/relationships" $
Element "Relationships" M.empty $
map (\sn -> relEl sn (T.concat ["worksheets/sheet", txti sn, ".xml"]) "worksheet") [1..n]
++
[relEl (n + 1) "styles.xml" "styles", relEl (n + 2) "sharedStrings.xml" "sharedStrings"]
relEl i target typ =
nEl "Relationship"
(M.fromList [("Id", T.concat ["rId", txti i]), ("Target", target),
("Type", T.concat ["http://schemas.openxmlformats.org/officeDocument/2006/relationships/", typ])]) []
rootRelXml :: L.ByteString
rootRelXml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\
\<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\"><Relationship Id=\"rId1\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument\" Target=\"xl/workbook.xml\"/><Relationship Id=\"rId2\" Type=\"http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties\" Target=\"docProps/core.xml\"/><Relationship Id=\"rId3\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties\" Target=\"docProps/app.xml\"/></Relationships>"
contentTypesXml :: [FileData] -> L.ByteString
contentTypesXml fds = renderLBS def $ Document (Prologue [] Nothing []) root []
where
root = addNS "http://schemas.openxmlformats.org/package/2006/content-types" $
Element "Types" M.empty $
map (\fd -> nEl "Override" (M.fromList [("PartName", T.concat ["/", fdName fd]),
("ContentType", fdContentType fd)]) []) fds
qName :: Text -> Text -> Text -> Name
qName n ns p =
Name
{ nameLocalName = n
, nameNamespace = Just ns
, namePrefix = Just p
}
nsName :: [(Text, Text)] -> Text -> Text -> Name
nsName nss p n = qName n ns p
where
ns = fromJust $ lookup p nss
nm :: Text -> Text -> Name
nm ns n = Name
{ nameLocalName = n
, nameNamespace = Just ns
, namePrefix = Nothing}
addNS :: Text -> Element -> Element
addNS namespace (Element (Name ln _ _) as ns) = Element (Name ln (Just namespace) Nothing) as (map addNS' ns)
where
addNS' (NodeElement e) = NodeElement $ addNS namespace e
addNS' n = n
nonEmptyNmEl :: Name -> Map Name Text -> [Node] -> Maybe Node
nonEmptyNmEl _ _ [] = Nothing
nonEmptyNmEl name attrs nodes = justNmEl name attrs nodes
justNmEl :: Name -> Map Name Text -> [Node] -> Maybe Node
justNmEl name attrs nodes = Just $ nEl name attrs nodes
nEl :: Name -> Map Name Text -> [Node] -> Node
nEl name attrs nodes = NodeElement $ Element name attrs nodes
txti :: Int -> Text
txti = toStrict . toLazyText . decimal
txtd :: Double -> Text
txtd = toStrict . toLazyText . realFloat
txtb :: Bool -> Text
txtb = T.toLower . T.pack . show