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cha58.html
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cha58.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Eyebrow cha58</title>
</head>
<body>
<style>
:root {
--margin: 10px;
}
html {
height: 100%;
}
body {
display: flex;
flex-direction: column;
width: 100%; height: 100%; margin: var(--margin);
overflow: hidden;
}
.content {
position: relative;
flex-grow: 1;
}
.scroll-wrapper {
box-sizing: border-box;
position: absolute;
height: calc(100% - 2*var(--margin)); width: calc(100% - 2*var(--margin)); border: 1px solid black;
overflow: auto; display: flex; flex-direction: column-reverse;
padding: 5px;
}
.scroll-start-at-top { flex: 1 1 0%; }
#file {
box-sizing: border-box;
border: 0px;
resize: none;
width: 100%; height: 100%;
}
#input {
margin-top: var(--margin);
box-sizing: border-box;
display: flex;
width: 100%;
}
#query { flex-grow: 1; margin: 0px 10px;}
.stderr { color: blue; }
.stderr, .stdout, .query { white-space: pre; font-family: monospace;}
.query, .prompt { font-weight: bold; }
.query { margin-top: 5px; }
</style>
<div class="content">
<div class="scroll-wrapper">
<span class="scroll-start-at-top"></span>
<div class="console">
<div id="output"></div>
<form class="input" id="input">
<span class="prompt">?- </span><input type="text" name="query" id="query" value="main(['--wcache', 'http://eyereasoner.github.io/eye/reasoning/cha58', '.', '--nope', '--blogic', 'http://eyereasoner.github.io/eye/reasoning/cha58/cha58-data.n3', 'http://eyereasoner.github.io/eye/reasoning/cha58/cha58-blogic.n3']).">
</form>
</div>
</div>
</div>
<script src="./swipl-web.js"></script>
<script>
const output = document.getElementById('output');
const input = document.getElementById('input');
const more = document.getElementById('more');
const editor = document.getElementById('editor');
let yield = null;
let buffers = {
stdout: [],
stderr: []
}
function write(to, c) {
if (c)
buffers[to].push(c);
if (c == 10 || c == null)
flush(to);
}
function flush(to) {
const line = String.fromCharCode.apply(null, buffers[to]);
print_output(line, to);
buffers[to] = [];
}
function bindStdStreams(module) {
module.FS.init(undefined, (c) => write("stdout", c), (c) => write("stderr", c));
}
function print_output(line, cls) {
const node = document.createElement('span');
node.className = cls;
node.textContent = line;
output.insertBefore(node, more);
};
function pl(s) {
Module.prolog.call(s);
}
function query(query) {
print_output(`?- ${query}.\n`, 'query');
if (yield && yield.yield == "goal")
next(yield.resume(query));
else
alert("REPL is not waiting for a goal");
}
input.addEventListener('submit', (e) => {
e.preventDefault();
if (yield && yield.yield == "goal") {
let query = e.target.elements.query.value;
e.target.elements.query.value = '';
e.target.style.display = "none";
if (!/\.\s*/.test(query))
query += ".\n";
print_output(`?- ${query}\n`, 'query');
next(yield.resume(query));
} else {
alert("Not waiting for a query");
}
}, false);
function reply_more(action) {
more.style.display = "none";
if (yield && yield.yield == "more") {
switch (action) {
case "redo":
print_output(";", "stdout");
break;
case "continue":
print_output(".", "stdout");
break;
}
next(yield.resume(action));
}
}
function next(rc) {
yield = null;
if (typeof(rc) === "object") {
yield = rc;
flush("stderr");
flush("stdout");
switch (rc.yield) {
case "goal":
input.style.display = "flex";
break;
case "more":
more.style.display = "inline-block";
break;
}
} else if (rc == undefined) {
console.log("Unhandled exception; restarting");
toplevel();
}
}
function toplevel() {
let rc = Module.prolog.call("'$query_loop'", {
async: true,
module: "$toplevel"
});
next(rc);
}
var Module = {
noInitialRun: true,
arguments: [],
locateFile: function(file) {
return './' + file;
},
preRun: [() => bindStdStreams(Module)]
};
async function fetchWrite(link, file) {
const response = await fetch(link);
await Module.FS.writeFile(file, await response.text());
}
SWIPL(Module).then(async (module) => {
await fetchWrite('https://eyereasoner.github.io/eye/eye.pl', 'eye.pl');
await fetchWrite('https://eyereasoner.github.io/eye/reasoning/cha58/cha58-data.n3', 'cha58-data.n3');
await fetchWrite('https://eyereasoner.github.io/eye/reasoning/cha58/cha58-blogic.n3', 'cha58-blogic.n3');
pl("set_prolog_flag(tty_control, true)");
pl("set_prolog_flag(debug_on_error, false)");
toplevel();
query("consult('./eye.pl')");
});
</script>
</body>
</html>