Clean up top-level source tree

Collect architecture independent data in 'share' subfolder.
This also matches the install path

share/websockets_client/js/connection.js

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+const JSON_INF = 1.0e+128;
+
+class Connection {
+
+    constructor (host, port) {
+        this.socket = new WebSocket(`ws://${host}:${port}`);
+        this.socket.onopen = () => this.openCallback();
+        this.socket.onclose = () => this.closeCallback();
+        this.socket.onerror = (error) => this.errorCallback(error);
+        this.socket.onmessage = (event) => this._onMessage(event);
+    }
+    
+    openCallback () {
+        // empty
+    }
+
+    closeCallback () {
+        // empty
+    }
+    
+    errorCallback (error) {
+        // empty
+    }
+
+    messageCallback (node, addr, val) {
+        // empty
+    }
+
+    send (node, addr, val) {
+        for (const i in val) {
+            if (val[i] == Infinity) {
+                val[i] = JSON_INF;
+            } else if (val[i] == -Infinity) {
+                val[i] = -JSON_INF;
+            }
+        }
+        
+        const json = JSON.stringify({node: node, addr: addr, val: val});
+
+        this.socket.send(json);
+    }
+
+    _onMessage (event) {
+        const msg = JSON.parse(event.data);
+
+        for (const i in msg.val) {
+            if (msg.val[i] >= JSON_INF) {
+                msg.val[i] = Infinity;
+            } else if (msg.val[i] <= -JSON_INF) {
+                msg.val[i] = -Infinity;
+            }
+        }
+
+        this.messageCallback(msg.node, msg.addr || [], msg.val);
+    }
+
+}