improv: Separate components & merge plugins binary with launcher service

plugins/src/calc/calc.js

@@ -0,0 +1,99 @@
+#!/usr/bin/gjs
+
+const { GLib, Gio } = imports.gi;
+
+/** The directory that this script is executed from. */
+const SCRIPT_DIR = GLib.path_get_dirname(new Error().stack.split(':')[0].slice(1));
+
+/** Add our directory so we can import modules from it. */
+imports.searchPath.push(SCRIPT_DIR)
+
+const math = imports.math.math;
+math.config({number: 'BigNumber' });
+
+const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
+const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
+
+class App {
+    constructor() {
+        this.last_query = ""
+        this.last_value = ""
+    }
+
+    search(input) {
+        this.last_query = input.substr(1)
+
+        try {
+            this.last_value = math.evaluate(this.last_query).toString()
+        } catch (e) {
+            this.last_value = this.last_query + ` x = ?`
+        }
+
+        this.send({ "Append": {
+            id: 0,
+            name: this.last_value,
+            description: '',
+            icon: { Name: 'accessories-calculator' },
+        }})
+
+        this.send("Finished")
+    }
+
+    activate(_id) {
+        this.send({ "Fill": '= ' + this.last_value })
+    }
+
+    send(object) {
+        STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
+        STDOUT.flush(null)
+    }
+}
+
+function main() {
+    /** @type {null | ByteArray} */
+    let input_array
+
+    /** @type {string} */
+    let input_str
+
+    /** @type {null | LauncherRequest} */
+    let event
+
+    let app = new App()
+
+    mainloop:
+    while (true) {
+        try {
+            [input_array,] = STDIN.read_line(null)
+        } catch (e) {
+            break
+        }
+
+        input_str = imports.byteArray.toString(input_array)
+        if ((event = parse_event(input_str)) !== null) {
+            if ("Search" in event) {
+                app.search(event.Search);
+            } else if ("Activate" in event) {
+                app.activate(event.Activate);
+            } else if ("Exit" === event) {
+                break mainloop
+            }
+        }
+    }
+}
+
+/**
+ * Parses an IPC event received from STDIN
+ * @param {string} input
+ * @returns {null | LauncherRequest}
+ */
+function parse_event(input) {
+    try {
+        return JSON.parse(input)
+    } catch (e) {
+        log(`Input not valid JSON`)
+        return null
+    }
+}
+
+main()

plugins/src/calc/plugin.ron

@@ -0,0 +1,11 @@
+(
+    name: "Calculator",
+    description: "Math.JS calculations",
+    query: (
+        regex: "^(=)+",
+        help: "= ",
+        isolate: true,
+    ),
+    bin: (path: "calc.js"),
+    icon: Name("x-office-spreadsheet")
+)