forked from GitHub/gf-core
First version of a web server for morphological paradigms.
This commit is contained in:
aarne
108
src/www/gfmorpho/GFMorpho.hs
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108
src/www/gfmorpho/GFMorpho.hs
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import Network.HTTP.Base
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import Codec.Binary.UTF8.String
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import Data.Char
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import Data.List
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import System
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main = do
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xs <- getArgs
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let xxoo = lexArgs (unwords xs)
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case pArgs xxoo of
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Just (oo,xx) -> do
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morpho oo xx
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_ -> do
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putStrLn $ "cannot read " ++ unwords xs ++ "."
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putStrLn "<p>"
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putStrLn usage
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usage = "usage: gfmorpho LANG POS FORMS OPT*"
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noParse xx = length xx < 3 ----
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lexArgs = map (decodeString . urlDecode) . words . map unspec . drop 1 . dropWhile (/='=') where
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unspec c = case c of
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'=' -> ' '
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'+' -> ' '
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_ -> c
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pArgs xxoo = do
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let (oo,xx) = partition isOption xxoo
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if length xx < 3 then Nothing else return (oo,xx)
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morpho :: [String] -> [String] -> IO ()
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morpho oo xx = do
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writeFile tmpCommand (script xx)
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system $ command xx
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s <- readFile tmpFile
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putStrLn $ mkFile $ response oo s
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script ("!":lang:rest) = "cc -table -unqual " ++ unwords rest
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script (lang: pos: forms) = "cc -table -unqual " ++ fun pos ++ quotes forms
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where
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fun pos = "mk" ++ pos
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command ("!":args) = command args
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command (lang: pos: forms) =
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"/usr/local/bin/gf -run -retain -path=alltenses alltenses/Paradigms" ++ lang ++ ".gfo"
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++ " < " ++ tmpCommand
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++ " > " ++ tmpFile
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quotes = unwords . map quote where
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quote s = case s of
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'_':tag -> tag
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_ -> "\"" ++ s ++ "\""
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-- html response
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response oo =
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tag "table border=1" . unlines . map (tag "tr" . unwords) . map cleanTable . grep oo . map words . lines
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cleanTable ws = [tag "td" (unwords param), tag "td" (tag "i" (unwords form))] where
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(param,form) = getOne (map cleant ws)
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cleant w = case w of
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"s" -> ""
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"." -> ""
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_ -> cleanw w
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cleanw = filter (flip notElem "()")
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getOne ws = let ww = filter (/= "=>") ws in (init ww, [last ww]) -- excludes multiwords
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responsePlain oo =
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unlines . map unwords . grep oo . map cleanTablePlain . map words . lines
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cleanTablePlain = map clean where
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clean w = case w of
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"=>" -> "\t"
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"s" -> ""
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"." -> ""
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_ -> cleanw w
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cleanw = filter (flip notElem "()")
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grep oo wss = filter (\ws -> all (flip matchIn ws) (map tail oo)) wss
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matchIn p ws = any (match p) ws where
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match p w = case (p,w) of
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('*':ps,_ ) -> any (match ps) [drop i w | i <- [0..length w]] ---
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(c:ps, d:ws) -> c == d && match ps ws
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_ -> p == w
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tmpFile = "_gfmorpho.tmp"
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tmpCommand = "_gfcommand.tmp"
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isOption = (=='-') . head
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tag t s = "<" ++ t ++ ">" ++ s ++ "</" ++ t ++ ">"
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-- html file with UTF8
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mkFile s = unlines $ [
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"<HTML>",
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"<HEAD>",
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"<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=utf-8\">",
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"<TITLE>GF Smart Paradigm Output</TITLE>",
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"</HEAD>",
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"<BODY>",
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s,
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"</BODY>",
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"</HTML>"
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]
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23
src/www/gfmorpho/README
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src/www/gfmorpho/README
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A service for using smart paradigms on the web.
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Works with a cgi script running a Haskell program that calls GF to interprete a query string as a "cc" command on a specified Paradigms file. For instance, if the
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user submits the query
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Eng N baby
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the program executes the command
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cc -table -unqual ParadigmsEng.mkN "baby"
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The resulting output is converted into an HTML table.
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The file gfmorpho.html gives some more information. Open issues in addition to those mentioned there are:
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- GFMorpho.hs creates the temporary files _gfcommand.tmp and _gfmorpho.tmp which need to be world-writable; they should be created more properly and removed after use
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- gfmorpho.cgi defines the variable GF_LIB_PATH to reside in /Users/aarne, and must be edited for other environments
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- to work for all languages mentioned, one has to compile some incomplete GF grammars not standardly compiled:
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GF/lib/src$ runghc Make alltenses lang langs=Amh,Ara,Lat,Mlt,Tur
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(c) Aarne Ranta 2012 under LGPL/BSD.
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7
src/www/gfmorpho/gfmorpho.cgi
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7
src/www/gfmorpho/gfmorpho.cgi
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#!/bin/bash
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echo "Content-type: text/html";
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echo ""
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export LANG=en_US.UTF-8
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runghc GFMorpho "$QUERY_STRING"
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100
src/www/gfmorpho/gfmorpho.html
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src/www/gfmorpho/gfmorpho.html
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html> <head>
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">
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<title>Use GF Smart Paradigms</title>
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</head>
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<body>
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<h1>Word inflection with smart paradigms</h1>
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Give language, part of speech, and one or more word forms, to obtain
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the inflection table.
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<p>
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<form method=get action="gfmorpho.cgi">
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<input name=args>
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<INPUT TYPE=SUBMIT VALUE="Submit">
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</form>
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Examples:
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<pre>
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Eng N baby
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Fin V odottaa odotti
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Fre V manger
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Ger N Soldat Soldaten _masculine
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Hin N बच्छा
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Jpn V 答える _Gr2
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Lat A vetus veteris
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</pre>
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Thus notice that strings are given without quotes, but features
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are prefixed with an underscore <tt>_</tt> (a temporary hack).
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<h2>Languages and part of speech tags</h2>
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The available languages are:
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<pre>
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Afr Amh Cat Dan Dut Eng Fin Fre Ger Hin Ina Ita Jpn Lat
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Lav Nep Nor Pes Pnb Ron Rus Snd Spa Swe Tha Tur Urd
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</pre>
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In addition, the library has the languages <tt>Ara Bul Pol</tt>, but they
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are not yet available in this way; you can however use the full form of
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paradigm applications prefixed by "!" as described below.
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<p>
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The parts of speech are: N (= noun), A (= adjective), V (= verb).
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<p>
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The way this works is that the program constructs the most probable
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inflection table from the forms given. For a vast majority of words in
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all languages, it is enough to give just one form. But sometimes more
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forms are needed to get the inflection table right.
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<h2>Filtering with patterns</h2>
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You may not want to see the whole table. Then you can filter it with patterns, each of which works like
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"grep", using <tt>*</tt> to match any substring, either in the
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features or in the forms:
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<pre>
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Eng N baby -Gen
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Eng V die -dy*
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</pre>
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This is a front end to the Paradigms modules in the GF Resource Grammar.
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See <a href=http://grammaticalframework.org/lib/doc/synopsis.html>RGL
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Synopsis</a> for available languages and paradigms.
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<h2>Using custom paradigms</h2>
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(Another temporary hack, for GF experts:) If you want to use other paradigms than the smart
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<tt>mk</tt> paradigms, you can prefix your input with <tt>!</tt> and
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use the normal expression syntax of GF. For example:
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<pre>
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! Ara brkN "طير" "فَعل" "فُعُول" Masc NoHum
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! Bul mkN041 "птица"
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! Pol mkRegAdj "duży" "większy" "dużo" "więcej"
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</pre>
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This also allows you to use structured terms:
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<pre>
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! Ger prefixV "auf" (mkV "fassen")
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</pre>
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<h2>To do</h2>
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<ul>
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<li> nicer input helped by menus
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<li> error handling and reporting when some language doesn't follow
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the format assumed here
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<li> better documentation of the paradigms
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</ul>
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<p>
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Powered by <a href=http://grammaticalframework.org>GF</a>. Aarne Ranta 2012.
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<hr>
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<address></address>
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<!-- hhmts start --> Last modified: Wed Sep 12 14:24:51 CEST 2012 <!-- hhmts end -->
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</body> </html>
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