forked from GitHub/gf-core
Improvements of "gf -server" mode and related setup
"gf -server" mode now contains everything needed to run the minibar and the grammar editor (including example-based grammar writing). The Setup.hs script installs the required files where gf -server can find them. These files have been moved to a new directory: src/www. The separate server program pgf-http is now obsolete.
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hallgren
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src/www/minibar/gf-web-api-examples.html
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src/www/minibar/gf-web-api-examples.html
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<!DOCTYPE html>
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<html>
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<head>
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<title>GF web services API examples</title>
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<meta charset="UTF-8">
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<style type="text/css">
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body { background: #ddd; }
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h1, h2, h3, small, th { font-family: sans-serif; }
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dt { background: #cef; }
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dt.js { background: white; margin-bottom: 1ex; }
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dt.js em { color: #36f; }
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dd { background: #ffc; margin-top: 1ex; margin-bottom: 1ex; }
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dl.apiexamples>dt, dl.apiexamples>dd { font-family: monospace; }
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dl.apiexamples>dd { white-space: pre; }
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div.modtime { float: right; }
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.modtime { color: #666; white-space: nowrap; }
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@media projection {
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div.intro { display: none; }
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body {
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font-size: 150%;
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}
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h2 { page-break-before: always; }
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dl.apiexamples dd {
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page-break-after: always;
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/*border-style: none;*/
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}
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}
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</style>
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<body>
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<h1>GF web services API examples</h1>
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GF can be used interactively from the GF Shell. Some of the functionality
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availiable in the GF shell is also available via the GF web services API.
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<p>
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The
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<a href="http://code.google.com/p/grammatical-framework/wiki/GFWebServiceAPI">GF
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Web Service API page</a> describes the calls supported by the GF web service
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API. Below, we illustrate these calls by examples, and also show
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how to make these calls from JavaScript using the API defined in
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<a href="pgf_online.js"><code>pgf_online.js</code></a>.
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<p>
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<strong>Note</strong> that <code>pgf_online.js</code> was initially developed
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with one particular web application in mind (the minibar), so the server API was
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incomplete. It was simplified and generalized in August 2011 to support the
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full API.
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<dl>
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<dt class=js>These boxes show what the calls look like in the JavaScript
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API defined in <code>pgf_online.js</code>.
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<dt>These boxes show the corresponding URLs sent to the PGF server.
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<dd>These boxes show the JSON (JavaScript data structures) returned by the PGF
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server. This will be passed to the callback function supplied in the
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call.
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</dl>
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<h2>Initialization</h2>
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<dl class=apiexamples>
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<dt class=js>
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<em>// Select which server and grammars to use:</em>
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<br>var server_options = {
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<br> grammars_url: "http://www.grammaticalframework.org/grammars/",
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<br> grammar_list: ["Foods.pgf"] <em>// It's ok to skip this</em>
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<br>}
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<br>var server = pgf_online(server_options);
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</dl>
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<h2>Examples</h2>
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<dl class=apiexamples>
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<dt class=js> <em>// Get the list of available grammars</em>
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<br>server.get_grammarlist(callback)
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<dt>http://localhost:41296/grammars/grammars.cgi
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<dd>["Foods.pgf","Phrasebook.pgf"]
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<dt class=js> <em>// Select which grammar to use</em>
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<br>server.switch_grammar("Foods.pgf")
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<dt class=js><em>// Get list of concrete languages and other grammar info</em>
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<br>server.grammar_info(callback)
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<dt>http://localhost:41296/grammars/Foods.pgf
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<dd>{"name":"Foods",
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"userLanguage":"FoodsEng",
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"categories":["Comment","Float","Int","Item","Kind","Quality","String"],
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"functions":["Boring","Cheese","Delicious","Expensive","Fish","Fresh",
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"Italian","Mod","Pizza","Pred","That","These","This","Those","Very",
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"Warm","Wine"],
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"languages":[{"name":"FoodsBul","languageCode":""},
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{"name":"FoodsEng","languageCode":"en-US"},
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{"name":"FoodsFin","languageCode":""},
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{"name":"FoodsSwe","languageCode":"sv-SE"},
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...]
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}
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<dt class=js><em>// Get a random syntax tree</em>
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<br>server.get_random({},callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=random
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<dd>[{"tree":"Pred (That Pizza) (Very Boring)"}]
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<dt class=js><em>// Linearize a syntax tree</em>
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<br>server.linearize({tree:"Pred (That Pizza) (Very Boring)",to:"FoodsEng"},callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=linearize&tree=Pred+(That+Pizza)+(Very+Boring)&to=FoodsEng
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<dd>[{"to":"FoodsEng","text":"that pizza is very boring"}]
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<dt class=js>server.linearize({tree:"Pred (That Pizza) (Very Boring)"},callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=linearize&tree=Pred+(That+Pizza)+(Very+Boring)
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<dd>[{"to":"FoodsBul","text":"онази пица е много еднообразна"},
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{"to":"FoodsEng","text":"that pizza is very boring"},
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{"to":"FoodsFin","text":"tuo pizza on erittäin tylsä"},
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{"to":"FoodsSwe","text":"den där pizzan är mycket tråkig"},
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...
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]
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<dt class=js><em>// Parse a string</em>
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<br>server.parse({from:"FoodsEng",input:"that pizza is very boring"},callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=parse&input=that+pizza+is+very+boring&from=FoodsEng
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<dd>[{"from":"FoodsEng",
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"brackets":{"cat":"Comment","fid":10,"index":0,"children":[{"cat":"Item","fid":7,"index":0,"children":[{"token":"that"},{"cat":"Kind","fid":6,"index":0,"children":[{"token":"pizza"}]}]},{"token":"is"},{"cat":"Quality","fid":9,"index":0,"children":[{"token":"very"},{"cat":"Quality","fid":8,"index":0,"children":[{"token":"boring"}]}]}]},
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"trees":["Pred (That Pizza) (Very Boring)"]}]
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<dt class=js><em>// Translate to all available languages</em>
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<br>server.translate({from:"FoodsEng",input:"that pizza is very boring"},callback)
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<dd>...
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<dt class=js><em>// Translate to one language</em>
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<br>server.translate({input:"that pizza is very boring", from:"FoodsEng", to:"FoodsSwe"}, callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=translate&input=that+pizza+is+very+boring&from=FoodsEng&to=FoodsSwe
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<dd>[{"from":"FoodsEng",
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"brackets":{"cat":"Comment","fid":10,"index":0,"children":[{"cat":"Item","fid":7,"index":0,"children":[{"token":"that"},{"cat":"Kind","fid":6,"index":0,"children":[{"token":"pizza"}]}]},{"token":"is"},{"cat":"Quality","fid":9,"index":0,"children":[{"token":"very"},{"cat":"Quality","fid":8,"index":0,"children":[{"token":"boring"}]}]}]},
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"translations":
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[{"tree":"Pred (That Pizza) (Very Boring)",
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"linearizations":
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[{"to":"FoodsSwe",
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"text":"den där pizzan är mycket tråkig"}]}]}]
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<dt class=js><em>// Get completions (what words could come next)</em>
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<br>server.complete({from:"FoodsEng",input:"that pizza is very "},callback)
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<dt>http://localhost:41296/grammars/Foods.pgf?command=complete&input=that+pizza+is+very+&from=FoodsEng
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<dd>[{"from":"FoodsEng",
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"brackets":{"cat":"_","fid":0,"index":0,"children":[{"cat":"Item","fid":7,"index":0,"children":[{"token":"that"},{"cat":"Kind","fid":6,"index":0,"children":[{"token":"pizza"}]}]},{"token":"is"},{"token":"very"}]},
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"completions":["boring","delicious","expensive","fresh","Italian","very","warm"],
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"text":""}]
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</dl>
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<hr>
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<div class=modtime><small>
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<!-- hhmts start --> Last modified: Sun Aug 21 10:52:43 CEST 2011 <!-- hhmts end -->
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</small></div>
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<address><a href="http://www.cse.chalmers.se/~hallgren/">TH</a></address>
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