first commit

tools/qalc/flaviut/gnuplot-worker.js

@@ -0,0 +1,55 @@
+let pendingRequests = [];
+
+self.addEventListener('message', ({ data }) => {
+    if (pendingRequests) {
+        // gnuplot not loaded yet
+        pendingRequests.push(data);
+    } else {
+        doPlot(data);
+    }
+});
+
+var Module = {
+    noInitialRun: true,
+    postRun: () => {
+        shouldRunNow = true;
+        pendingRequests.forEach(doPlot);
+        pendingRequests = null;
+    },
+    print: (s) => {
+        console.log('GNUPLOT LOG: ' + s);
+    },
+    printErr: (s) => {
+        console.warn('GNUPLOT ERR: ' + s);
+    },
+};
+
+function doPlot({
+    fix_cmd = true,
+    data_files = {},
+    commands,
+    id,
+    // TODO: do something with these...?
+    extra_commandline,
+    persist,
+}) {
+    const files = Object.keys(data_files);
+    for (const [file, data] of Object.entries(data_files)) {
+        FS.writeFile(file, data);
+    }
+    const cmd = fix_cmd
+        ? commands.replace(
+              'set terminal pop',
+              "set terminal svg; set output '/output'"
+          )
+        : commands;
+    FS.writeFile('/commands', cmd);
+    callMain(['/commands']);
+    const output = FS.readFile('/output', { encoding: 'utf8' });
+    for (const file of ['/commands', '/output', ...files]) {
+        FS.unlink(file);
+    }
+    self.postMessage({ id, output });
+}
+
+importScripts('gnuplot.js');