/* 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 #include #include #include /* 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 (); }