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-rw-r--r--digital/avr/modules/host/host.host.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/digital/avr/modules/host/host.host.c b/digital/avr/modules/host/host.host.c
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+/* host.host.c */
+/* avr.host - Host fonctions modules. {{{
+ *
+ * Copyright (C) 2005-2006 Nicolas Schodet
+ *
+ * Robot APB Team/Efrei 2006.
+ * Web: http://assos.efrei.fr/robot/
+ * Email: robot AT efrei DOT fr
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * }}} */
+#define _GNU_SOURCE
+#include "common.h"
+#include "host.h"
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/* Saved arguments. Uninitialised global variables are set to 0 by the
+ * compiler. */
+static int host_saved_argc;
+static char **host_saved_argv;
+
+/** Initialise host module. */
+void
+host_init (int argc, char **argv)
+{
+ host_saved_argc = argc;
+ host_saved_argv = argv;
+}
+
+/** Retrieve saved program arguments. Program name and used parameters are
+ * stripped. */
+void
+host_get_program_arguments (int *argc, char ***argv)
+{
+ assert (host_saved_argc);
+ *argc = host_saved_argc - 1;
+ *argv = host_saved_argv + 1;
+}
+
+/** Register a host integer. */
+void
+host_register_integer (const char *name, int val)
+{
+ int r;
+ char sval[256];
+ /* Convert to string, and register the string. */
+ r = snprintf (sval, sizeof (sval), "%d", val);
+ assert (r < (int) sizeof (sval));
+ host_register_string (name, sval);
+}
+
+/** Register a host string. */
+void
+host_register_string (const char *name, const char *val)
+{
+ int r;
+ r = setenv (name, val, 1);
+ assert (r == 0);
+}
+
+/** Fetch a host integer, return -1 if non existant. */
+int
+host_fetch_integer (const char *name)
+{
+ const char *sval = host_fetch_string (name);
+ return sval ? atoi (sval) : -1;
+}
+
+/** Fetch a host string, return 0 if non existant. */
+const char *
+host_fetch_string (const char *name)
+{
+ return getenv (name);
+}
+
+/** Reset the program. */
+void
+host_reset (void)
+{
+ assert (host_saved_argv);
+ execv (program_invocation_name, host_saved_argv);
+ assert_perror (errno);
+ abort ();
+}
+