Utility app helper functions for listing mods in the GTK+ launcher.

OpenRA.Launcher.Gtk/utility.c

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made 
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see LICENSE.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <glib.h>
+
+int util_get_mod_list (GChildWatchFunc callback)
+{
+  GPid child_pid;
+  gint * out_fd = (gint *)malloc(sizeof(gint));
+  char * spawn_args[] = { "mono", "OpenRA.Utility.exe", "-l", NULL };
+  gboolean result = g_spawn_async_with_pipes(NULL, spawn_args, NULL, 
+			   G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
+			   NULL, NULL, &child_pid, NULL, out_fd, NULL, NULL);
+
+  if (!result)
+  {
+    return FALSE;
+  }
+
+  g_child_watch_add(child_pid, callback, out_fd);
+
+  return TRUE;
+}
+
+int util_get_mod_metadata(char const * mod, GChildWatchFunc callback)
+{
+  GPid child_pid;
+  gint * out_fd = (gint *)malloc(sizeof(gint));
+  char * spawn_args[] = { "mono", "OpenRA.Utility.exe", NULL, NULL };
+  char util_args[32];
+  gboolean result;
+  sprintf(util_args, "-i=%s", mod);
+  spawn_args[2] = util_args;
+
+  result = g_spawn_async_with_pipes(NULL, spawn_args, NULL,
+			     G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
+			     NULL, NULL, &child_pid, NULL, out_fd, NULL, NULL);
+
+  if (!result)
+  {
+    return FALSE;
+  }
+
+  g_child_watch_add(child_pid, callback, out_fd);
+
+  return TRUE;
+}
+
+char * util_get_output(int fd, int * output_len)
+{
+  char buffer[1024], * msg = NULL;
+  int read_bytes = 0;
+  *output_len = 0;
+  while (0 != (read_bytes = read(fd, buffer, 1024)))
+  {
+    if (-1 == read_bytes)
+    {
+      g_error("Error reading from command output");
+      free(msg);
+      *output_len = 0;
+      return NULL;
+    }
+
+    *output_len += read_bytes;
+
+    msg = (char *)realloc(msg, *output_len + 1);
+
+    memcpy(msg + (*output_len - read_bytes), buffer, read_bytes);
+  }
+
+  msg[*output_len] = '\0';
+
+  return msg;
+}