mathgenealogy (empty) → 0.0.1

raw patch · 7 files changed

+762/−0 lines, 7 filesdep +HTTPdep +basedep +bytestringsetup-changed

Dependencies added: HTTP, base, bytestring, cmdargs, containers, directory, fgl, graphviz, haskell98, tagsoup, text

Files

• Entry.hs +49/−0
• Extract.hs +125/−0
• Graph.hs +47/−0
• LICENSE +339/−0
• Main.hs +128/−0
• Setup.hs +2/−0
• mathgenealogy.cabal +72/−0

@@ -0,0 +1,49 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Entry+-- Copyright   :  (C) Peter Robinson 2010-2012+-- License     :  GPL-2+--+-- Maintainer  :  Peter Robinson <thaldyron@gmail.com>+-- Stability   :  experimental+-- Portability :  portable +--+-----------------------------------------------------------------------------+module Entry+where+import Data.Maybe+import Data.Text.Lazy(Text)+import qualified Data.Text.Lazy as T++data Entry = Entry +  { entryName :: Text +  , entryGraduationInfo :: Maybe GraduationInfo +  , entryAdvisors :: [(Text,Text)]+  }+  deriving(Ord,Eq)++urlAdvisors :: Entry -> [Text]+urlAdvisors = map (T.pack . (++) "http://genealogy.math.ndsu.nodak.edu/" . T.unpack . snd) . entryAdvisors++data GraduationInfo = GraduationInfo+  { gradDegree :: Maybe Text+  , gradUniversity :: Maybe Text+  , gradYear :: Maybe Text+  , gradThesis :: Maybe Text+  }+  deriving(Ord,Eq)+++instance Show Entry where+  show e = T.unpack (entryName e)+        ++ maybeShow (entryGraduationInfo e)+    where +      maybeShow (Just g) = "\\n" ++ show g+      maybeShow Nothing  = ""++instance Show GraduationInfo where+  show g = maybeShow (gradDegree g) " " ++ maybeShow (gradUniversity g) ", " +        ++ maybeShow (gradYear g) "\\n" ++ maybeShow (gradThesis g) "" +    where+      maybeShow gi s = if isJust gi then T.unpack (fromJust gi) ++ s else "" +

@@ -0,0 +1,125 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Extract+-- Copyright   :  (C) Peter Robinson 2010-2012+-- License     :  GPL-2+--+-- Maintainer  :  Peter Robinson <thaldyron@gmail.com>+-- Stability   :  experimental+-- Portability :  portable +--+-- Functions for retrieving data from the mathematics genealogy project.+--+-----------------------------------------------------------------------------+module Extract+where+import Network.HTTP+import Text.HTML.TagSoup+import Control.Monad+import Control.Exception+import Data.Char(isSpace)+import Data.Maybe+import Data.Text.Lazy(Text)+import Data.Text.Lazy.Encoding +import qualified Data.Text.Lazy as T+import qualified Data.ByteString.Lazy.Char8 as B+import Control.Applicative++import Entry++openURL x = return . T.pack =<<  getResponseBody =<< simpleHTTP (getRequest x)++getTags :: Text -> IO [Tag Text]+getTags url = parseTags <$> openURL (T.unpack url)++parseEntry :: [Tag Text]+      -> Entry+parseEntry tags = +  Entry (scientist tags) +        (graduationInfo tags)+        (advisors tags)++scientist :: [Tag Text] -> Text+scientist tags = +  let TagText sc = removeClutter $ head $ tail $ head $ sections (~== "<h2 style") tags in+  decodeUtf8 $ B.pack $ T.unpack sc + ++graduationInfo :: [Tag Text] -> Maybe GraduationInfo+graduationInfo tags = +  let offset = head $ sections (~== "<span style=\"margin-right: 0.5em\">") tags+      getTag i = notEmptyMaybeTagText $ removeClutter $ offset !! i +      degree = getTag 1+      univ = getTag 3 +      year = getTag 5 +      diss = getTag 18 +  in matchLen offset degree univ year diss+    where +      matchLen offset degree univ year diss     +        | length offset >= 19 = Just $ GraduationInfo degree univ year diss +        | length offset >= 6  = Just $ GraduationInfo degree univ year Nothing+        | length offset >= 4  = Just $ GraduationInfo degree univ Nothing Nothing+        | length offset >= 2  = Just $ GraduationInfo degree Nothing Nothing Nothing+        | otherwise = Nothing ++advisors :: [Tag Text] -> [(Text,Text)] +advisors tags =+  let offset  = sections (~== "<p style=\"text-align: center\">") tags+      offset2 = sections (~== "<p style=\"text-align: center; line-height: 2.75ex\">") +                         tags+      getTag :: Int -> [[Tag Text]] -> Maybe Text+      getTag _ []   = Nothing+      getTag i off  = +        let tag = removeClutter $ flip (!!) i $ head off in+        case tag of+          TagText t -> maybeAdv $ notEmptyMaybeTagText $ +                                    TagText (decodeUtf8 $ B.pack $ T.unpack t)+          _         -> Nothing+                                   +      getLink :: Int -> [[Tag Text]] -> Maybe Text+      getLink _ []  = Nothing+      getLink i off = maybeLink $ flip (!!) (i-1) $ head off+  in +  if null offset2 +    then catMaybes' [(getTag 1 offset,getLink 1 offset)]+    else catMaybes' [ (getTag i offset2,getLink i offset2) | i <- [3,8] ]+  where+    -- TODO: rewrite+    catMaybes' :: [(Maybe a,Maybe b)] -> [(a,b)]+    catMaybes' [] = []+    catMaybes' ((Just a,Just l):xs) = (a,l) : catMaybes' xs+    catMaybes' ((Just a,Nothing):xs)=  catMaybes' xs+    catMaybes' ((Nothing,_):xs) = catMaybes' xs++    maybeAdv adv@(Just t)+      | T.unpack t == "Advisor: Unknown" = Nothing+      | otherwise = adv+    maybeAdv a = a++    maybeLink t +      | isTagOpenName (T.pack "a") t = Just $ fromAttrib (T.pack "href") t+      | otherwise           = Nothing+++notEmptyMaybeTagText :: Tag Text -> Maybe Text+notEmptyMaybeTagText (TagText t) +  | all isSpace (T.unpack t) = Nothing+  | T.null t            = Nothing+  | otherwise = Just t+notEmptyMaybeTagText _ = Nothing++-- | Removes preceding, trailing and multiple inter-word spaces:+removeClutter :: Tag Text -> Tag Text+removeClutter (TagText s) = +  TagText $ removeInterSpaces (T.strip s)+  where +    removeInterSpaces :: Text -> Text+    removeInterSpaces t = +      let (first,rest) = T.breakOn (T.pack "  ") t in+      if T.null first +        then rest+        else if T.null rest +               then first+               else removeInterSpaces $ first `T.append` T.tail rest+removeClutter t = t+

@@ -0,0 +1,47 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Graph+-- Copyright   :  (C) Peter Robinson 2010-2012+-- License     :  GPL-2+--+-- Maintainer  :  Peter Robinson <thaldyron@gmail.com>+-- Stability   :  experimental+-- Portability :  portable +--+-----------------------------------------------------------------------------+module Graph+where+import qualified Data.Map as M+import Data.Graph.Inductive+import Data.Text.Lazy(Text)+import qualified Data.Text.Lazy as T+import Entry++-- | Maps scientist names to Entries+type EntryMap = M.Map Text Entry++mkEntryMap :: [Entry] -> EntryMap -> EntryMap+mkEntryMap es theMap = foldl (\theMap e -> M.insert (entryName e) e theMap) theMap es+++entryGraph :: [Entry] -> Gr Entry ()+entryGraph es = entryEdges es (entryNodes es)+++entryNodes :: [Entry] -> Gr Entry ()+entryNodes = foldr (\e g -> insNode (head (newNodes 1 g),e) g) (empty :: Gr Entry ())+++entryEdges :: [Entry] -> Gr Entry () ->  Gr Entry ()+entryEdges entries graph = +  let nodeMap :: M.Map Entry Int+      nodeMap = M.fromList $ map (\(a,b) -> (b,a)) $ labNodes graph+      theMap = mkEntryMap entries M.empty+  in  foldr (\e g -> +    insEdges [(M.findWithDefault (error "Error - This should never happen.") e nodeMap+              ,M.findWithDefault undefined (M.findWithDefault +                  (error ("Error - This should never happen. Failed while looking up " +                    ++show adv ++ show theMap ++ show nodeMap)) adv theMap) nodeMap,())+             | adv <- map fst $ entryAdvisors e+             ] g) graph entries+

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@@ -0,0 +1,128 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Main+-- Copyright   :  (C) Peter Robinson 2010-2012+-- License     :  GPL-2+--+-- Maintainer  :  Peter Robinson <thaldyron@gmail.com>+-- Stability   :  experimental+-- Portability :  portable +--+-----------------------------------------------------------------------------+module Main+where+import Control.Monad+import Control.Applicative+import Control.Concurrent+import Control.Exception+import Data.GraphViz+import Data.GraphViz.Attributes.Complete+import qualified Data.ByteString.Lazy.Char8 as B+import qualified Data.List as L+import System+-- import System.IO.Error+import System.Directory+import Data.Maybe+import Data.Text.Lazy(Text)+import Data.Text.Lazy.Encoding +import qualified Data.Text.Lazy as T+import System.Console.CmdArgs+import Prelude hiding(catch)++import Extract+import Entry+import Graph+++-- command line arguments:+data MathGenealogy = MathGenealogy +  { filePrefix   :: String +  , keepDotFile  :: Bool+  , graphvizArgs :: String+  , noPDF        :: Bool+  , quiet        :: Bool+  , startURL     :: String+  }+  deriving(Eq,Data,Typeable,Show)++mathGenealogy = MathGenealogy+  { startURL     = def &= args &= typ "URL" +  , filePrefix   = "output" &= typ "PREFIX" +  , keepDotFile  = False +  , graphvizArgs = " -Tpdf -Gcharset=utf8 " &= typ "<graphviz parameters>" &= opt " -Tpdf -Gcharset=utf8 "+  , noPDF        = False+  , quiet        = False+  } &= summary "Mathematics Genealogy Visualizer" +    &= details[ "Run the program with a start-URL, for example:",+             "# mathgenealogy http://genealogy.math.ndsu.nodak.edu/id.php?id=18231"]++-- | GraphViz style attributes for edges and nodes.+-- See: http://hackage.haskell.org/packages/archive/graphviz/2999.12.0.4/doc/html/Data-GraphViz-Attributes.html+-- TODO: figure out if GraphViz supports CSS files or similar. +edgeAtt = const [ Dir Forward+                , color LightBlue2+                ] ++nodeAtt (num,e) = +  [ textLabel (T.pack (show e)) +  , Shape BoxShape+  , if num == 1 then FontSize 18 else FontSize 14+  , styles [rounded,filled,bold]+  , color LightYellow1+  , FontName (T.pack "ZapfChancery-MediumItalic") -- "Helvetica")+  ]+++main = do+  MathGenealogy filePrefix keepDotFile graphvizArgs noPdf quiet startURL +      <- cmdArgs mathGenealogy+  when (null startURL) $ +    throw (userError "Missing start-URL. Run 'mathgenealogy --help' for help.")++  gvExecutable <- (do m <- findExecutable "dot" +                      if m == Nothing +                        then throw (userError "Error - Couldn't find 'dot' program")+                        else return (fromJust m))+  putStrLn "Downloading data..."+  theGraph <- entryGraph <$> traverseEntries quiet [T.pack startURL]+  putStrLn "done. :)"+  let dotFileName = filePrefix ++ ".dot"         +  putStr $ "Writing DOT-file " ++ dotFileName ++ "..."+  let output = printDotGraph $ +                 graphToDot nonClusteredParams{ fmtNode = nodeAtt +                                              , fmtEdge = edgeAtt+                                              } theGraph+  B.writeFile dotFileName (encodeUtf8 output)+    `catch` (\(e::IOException) -> do { print e ; throw e })+  putStrLn "done. :)"++  unless noPdf $ do+    putStr "Generating graphics file..."+    let command = gvExecutable ++ " " ++ graphvizArgs ++ " " ++ dotFileName ++ " > " +                              ++ filePrefix ++ ".pdf" +    print command+    result <- system command+    when (isExitFailure result) $ do+      print $ "Error running the graphviz (dot) program. I tried: " ++ command+      throw $ userError "Existing."+    putStrLn "done. :)"+  unless keepDotFile $ removeFile dotFileName+  where+    isExitFailure (ExitFailure _) = True+    isExitFailure _               = False++    -- TODO: Build the graph here?+    traverseEntries :: Bool -> [Text] -> IO [Entry]+    traverseEntries quiet = traverseEntries' [] []+      where+        traverseEntries' acc _        []         = return $ L.nub acc+        traverseEntries' acc prevUrls (url:urls) = do+          e <- downloadEntry url+          threadDelay 1000000+          unless quiet $ print e+          let newUrls = urlAdvisors e+          traverseEntries' (e:acc) (url:prevUrls) ((newUrls L.\\ prevUrls) ++ urls)+    +downloadEntry :: Text -> IO Entry+downloadEntry = liftM parseEntry . getTags +

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,72 @@+-- mathgenealogy.cabal auto-generated by cabal init. For additional+-- options, see+-- http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.html#pkg-descr.+-- The name of the package.+Name:                mathgenealogy++-- The package version. See the Haskell package versioning policy+-- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for+-- standards guiding when and how versions should be incremented.+Version:             0.0.1++Synopsis:            Discover your (academic) ancestors!++-- A longer description of the package.+Description:         A command line program for extracting data from the+  Mathematics Genealogy Project (<http://genealogy.math.ndsu.nodak.edu/index.php>).+  .+  For example, if Carl Gauss wanted to explore his academic ancestors, he+  would type+  .+  > mathgenealogy http://genealogy.math.ndsu.nodak.edu/id.php?id=18231 +  .+  which will produce a directed acyclic graph in output.pdf. See +  .+  > mathgenealogy --help+  .+  for details. Requires GraphViz to run.++-- Homepage:            http://darcs.monoid.at/mathgenealogy++License:             GPL-2++License-file:        LICENSE++Stability:           experimental++Author:              Peter Robinson++Maintainer:          Peter Robinson <thaldyron@gmail.com>++Copyright:           (C) 2010-2012 Peter Robinson++Category:            Web++Build-type:          Simple++-- Extra files to be distributed with the package, such as examples or+-- a README.+-- Extra-source-files:  ++Cabal-version:       >=1.4+++Executable mathgenealogy+      build-depends: base >= 4 && < 5+                   , text >= 0.11 && <0.12+                   , directory >= 1.1 && <1.2+                   , haskell98 >= 1.1 && <1.2+                   , bytestring >= 0.9 && <1.0+                   , graphviz >= 2999.12 && <3000.0+                   , cmdargs >= 0.9.5 && <1.0.0+                   , fgl >= 5.4 && <5.5+                   , containers >= 0.4 && <0.5+                   , tagsoup >= 0.12.6 && <0.13+                   , HTTP >= 4000.1.2 && <5000+      Main-Is: Main.hs+      Other-modules: Graph+                   , Extract +                   , Entry+      extensions: ScopedTypeVariables+                , DeriveDataTypeable+--      ghc-options:     -O2