1 files changed, 109 insertions, 0 deletions
diff --git a/src/jack_internal.c b/src/jack_internal.c
new file mode 100644
index 0000000..5157e43
--- /dev/null
+++ b/src/jack_internal.c
@@ -0,0 +1,109 @@
+// Copyright 2007-2024 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#include "backend.h"
+#include "jack_impl.h"
+#include "jalv.h"
+#include "log.h"
+#include "types.h"
+
+#include <jack/types.h>
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/// Internal Jack client initialization entry point
+int
+jack_initialize(jack_client_t* client, const char* load_init);
+
+/// Internal Jack client finalization entry point
+void
+jack_finish(void* arg);
+
+int
+jack_initialize(jack_client_t* const client, const char* const load_init)
+{
+#ifndef E2BIG
+#  define E2BIG 7
+#endif
+#ifndef ENOMEM
+#  define ENOMEM 12
+#endif
+
+  const size_t args_len = strlen(load_init);
+  if (args_len > JACK_LOAD_INIT_LIMIT) {
+    jalv_log(JALV_LOG_ERR, "Too many arguments given\n");
+    return E2BIG;
+  }
+
+  Jalv* const jalv = (Jalv*)calloc(1, sizeof(Jalv));
+  if (!jalv) {
+    return ENOMEM;
+  }
+
+  if (!(jalv->backend = jalv_backend_allocate())) {
+    free(jalv);
+    return ENOMEM;
+  }
+
+  jalv->backend->client             = client;
+  jalv->backend->is_internal_client = true;
+
+  // Build full command line with "program" name for building argv
+  const size_t cmd_len = strlen("jalv ") + args_len;
+  char* const  cmd     = (char*)calloc(cmd_len + 1, 1);
+  memcpy(cmd, "jalv ", strlen("jalv ") + 1);
+  memcpy(cmd + 5, load_init, args_len + 1);
+
+  // Build argv
+  int    argc = 0;
+  char** argv = NULL;
+  char*  tok  = cmd;
+  int    err  = 0;
+  for (size_t i = 0; !err && i <= cmd_len; ++i) {
+    if (isspace(cmd[i]) || !cmd[i]) {
+      char** const new_argv = (char**)realloc(argv, sizeof(char*) * ++argc);
+      if (!new_argv) {
+        err = ENOMEM;
+        break;
+      }
+
+      argv           = new_argv;
+      cmd[i]         = '\0';
+      argv[argc - 1] = tok;
+      tok            = cmd + i + 1;
+    }
+  }
+
+  if (err || (err = jalv_open(jalv, &argc, &argv))) {
+    jalv_close(jalv);
+    free(jalv);
+  } else {
+    jalv_activate(jalv);
+  }
+
+  free(argv);
+  free(cmd);
+  return err;
+
+#undef ENOMEM
+#undef E2BIG
+}
+
+void
+jack_finish(void* const arg)
+{
+  Jalv* const jalv = (Jalv*)arg;
+  if (jalv) {
+    jalv_deactivate(jalv);
+    if (jalv_close(jalv)) {
+      jalv_log(JALV_LOG_ERR, "Failed to close Jalv\n");
+    }
+
+    jalv_backend_free(jalv->backend);
+    free(jalv);
+  }
+}