feat: add rack mode, colon commands, and client command parser

client/src/carla_host.c

@@ -11,6 +11,17 @@ static jack_client_t *jack_client = NULL;   // private JACK client for port conn
 static int carla_pids[MAX_PLUGINS];
 static int plugin_count = 0;
 
+#define MAX_CONNECTIONS 1024
+
+typedef struct {
+    int    plugin_id;
+    char   plugin_port[256];
+    char   looper_port[256];
+} connection_t;
+
+static connection_t connections[MAX_CONNECTIONS];
+static int conn_count = 0;
+
 int carla_init_jack(void) {
     if (handle != NULL) return 0;
 
@@ -95,7 +106,20 @@ int carla_connect(int id, const char *port_name, const char *looper_port) {
 
     // Real JACK port connection
     int ret = jack_connect(jack_client, looper_port, port_name);
-    return (ret == 0) ? 0 : -1;
+    if (ret != 0) return -1;
+
+    // Store the connection so we can disconnect it later
+    if (conn_count < MAX_CONNECTIONS) {
+        connections[conn_count].plugin_id = id;
+        strncpy(connections[conn_count].plugin_port, port_name,
+                sizeof(connections[conn_count].plugin_port) - 1);
+        connections[conn_count].plugin_port[sizeof(connections[conn_count].plugin_port) - 1] = '\0';
+        strncpy(connections[conn_count].looper_port, looper_port,
+                sizeof(connections[conn_count].looper_port) - 1);
+        connections[conn_count].looper_port[sizeof(connections[conn_count].looper_port) - 1] = '\0';
+        conn_count++;
+    }
+    return 0;
 }
 
 int carla_disconnect(const char *from, const char *to) {
@@ -105,7 +129,20 @@ int carla_disconnect(const char *from, const char *to) {
 
     // Real JACK port disconnection
     int ret = jack_disconnect(jack_client, from, to);
-    return (ret == 0) ? 0 : -1;
+    if (ret != 0) return -1;
+
+    // Remove the connection from our internal list (matching both port names)
+    for (int i = 0; i < conn_count; i++) {
+        if (strcmp(connections[i].looper_port, from) == 0 &&
+            strcmp(connections[i].plugin_port, to) == 0) {
+            // Shift remaining entries down
+            for (int j = i; j < conn_count - 1; j++)
+                connections[j] = connections[j + 1];
+            conn_count--;
+            break;
+        }
+    }
+    return 0;
 }
 
 void carla_set_bypass(int id, bool bypass) {
@@ -114,3 +151,28 @@ void carla_set_bypass(int id, bool bypass) {
     int pid = carla_pids[id];
     carla_set_active(handle, (uint)pid, !bypass);
 }
+
+int carla_disconnect_plugin(int id) {
+    if (!jack_client) return 0;
+    // Disconnect all stored connections for this plugin id
+    int any = 0;
+    for (int i = 0; i < conn_count; ) {
+        if (connections[i].plugin_id == id) {
+            jack_disconnect(jack_client,
+                            connections[i].looper_port,
+                            connections[i].plugin_port);
+            // Shift array
+            for (int j = i; j < conn_count - 1; j++)
+                connections[j] = connections[j + 1];
+            conn_count--;
+            any = 1;
+        } else {
+            i++;
+        }
+    }
+    return any ? 0 : -1;  // return -1 if no connections were found (harmless)
+}
+
+CarlaHostHandle carla_get_handle(void) {
+    return handle;
+}