static void initialize_process_state(void)
{
if(-1U != process_state.cwd_length) return;
update_cwd();
const char *root_filter = getenv(ENVVARS_PREFIX "ROOT_FILTER");
ASSERT(root_filter);
unsigned len = strlen(root_filter);
ASSERT(len < sizeof process_state.root_filter);
memcpy(process_state.root_filter, root_filter, len);
if(root_filter[len] == '/') {
len--;
}
ASSERT(len < sizeof process_state.root_filter);
process_state.root_filter[len] = 0;
process_state.root_filter_length = len;
}
int cmdloop(void)
{
char line[128];
update_cwd();
while (1) {
printf("cmd> "); fflush(stdout);
if (fgets(line, sizeof(line), stdin) == NULL)
break;
if (!isatty(0))
printf("%s", line);
if (line[0] == '#') /* comment lines */
continue;
char *args[10];
int i, nargs = split(line, args, 10, " \t\n");
if (nargs == 0)
continue;
if (!strcmp(args[0], "quit") || !strcmp(args[0], "exit"))
break;
if (!strcmp(args[0], "help")) {
for (i = 0; cmds[i].name != NULL; i++)
printf("%s\n", cmds[i].help);
continue;
}
for (i = 0; cmds[i].name != NULL; i++)
if (!strcmp(args[0], cmds[i].name) && nargs == cmds[i].nargs+1)
break;
if (cmds[i].name == NULL) {
if (nargs > 0)
printf("bad command: %s\n", args[0]);
}
else {
int err = cmds[i].f(&args[1]);
if (err != 0)
printf("error: %s\n", strerror(-err));
}
}
return 0;
}
int do_cd(char *argv[])
{
char *dir = argv[0];
int i, nnames;
char *names[10];
if (!strcmp(dir, "..")) {
if (depth > 0)
depth--;
}
else {
if (dir[0] == '/')
depth = 0;
nnames = split(dir, names, 10, "/");
for (i = 0; i < nnames; i++, depth++)
strcpy(paths[depth], names[i]);
}
update_cwd();
return 0;
}
