#define to_stmt_simple(stmt) \
container_of(stmt, struct grub2_statement_simple, st)
+#define to_stmt_block(stmt) \
+ container_of(stmt, struct grub2_statement_block, st)
#define to_stmt_if(stmt) \
container_of(stmt, struct grub2_statement_if, st)
#define to_stmt_menuentry(stmt) \
container_of(stmt, struct grub2_statement_menuentry, st)
+#define to_stmt_function(stmt) \
+ container_of(stmt, struct grub2_statement_function, st)
+#define to_stmt_conditional(stmt) \
+ container_of(stmt, struct grub2_statement_conditional, st)
struct env_entry {
const char *name;
entry = script_lookup_function(script, st->argv->argv[0]);
if (!entry) {
fprintf(stderr, "undefined function '%s'\n", st->argv->argv[0]);
- return 0;
+ return 1;
}
rc = entry->fn(script, entry->data, st->argv->argc, st->argv->argv);
return rc;
}
-int statement_if_execute(struct grub2_script *script,
+int statement_block_execute(struct grub2_script *script,
struct grub2_statement *statement)
{
- struct grub2_statement_if *st = to_stmt_if(statement);
- struct grub2_statements *case_stmts;
+ struct grub2_statement_block *st = to_stmt_block(statement);
+ return statements_execute(script, st->statements);
+}
+
+/* returns 0 if the statement was executed, 1 otherwise */
+static int statement_conditional_execute(struct grub2_script *script,
+ struct grub2_statement *statement, bool *executed)
+{
+ struct grub2_statement_conditional *st = to_stmt_conditional(statement);
int rc;
rc = st->condition->exec(script, st->condition);
+ *executed = (!rc);
+ if (*executed)
+ rc = statements_execute(script, st->statements);
+
+ return rc;
+}
+
+int statement_if_execute(struct grub2_script *script,
+ struct grub2_statement *statement)
+{
+ struct grub2_statement_if *st = to_stmt_if(statement);
+ struct grub2_statement *conditional;
+ bool executed;
+ int rc;
- if (rc == 0)
- case_stmts = st->true_case;
- else
- case_stmts = st->false_case;
+ list_for_each_entry(&st->conditionals->list, conditional, list) {
+ rc = statement_conditional_execute(script,
+ conditional, &executed);
+ if (executed)
+ break;
+ }
- if (case_stmts)
- statements_execute(script, case_stmts);
- else
- rc = 0;
+ if (!executed && st->else_case)
+ rc = statements_execute(script, st->else_case);
return rc;
}
} else {
opt->option->name = talloc_strdup(opt, "(unknown)");
}
+ opt->option->id = talloc_asprintf(opt->option, "%s#%s",
+ script->ctx->device->device->id,
+ opt->option->name);
script->opt = opt;
return 0;
}
+static int function_invoke(struct grub2_script *script,
+ void *data, int argc, char **argv)
+{
+ struct grub2_statement_function *fn = data;
+ char *name;
+ int i;
+
+ /* set positional parameters */
+ for (i = 0; i < argc; i++) {
+ name = talloc_asprintf(script, "$%d", i);
+ script_env_set(script, name, argv[i]);
+ }
+
+ return statements_execute(script, fn->body);
+}
+
+int statement_function_execute(struct grub2_script *script,
+ struct grub2_statement *statement)
+{
+ struct grub2_statement_function *st = to_stmt_function(statement);
+ const char *name;
+
+ if (st->name->type == GRUB2_WORD_VAR)
+ expand_var(script, st->name);
+
+ name = st->name->text;
+ script_register_function(script, name, function_invoke, st);
+
+ return 0;
+}
+
static void init_env(struct grub2_script *script)
{
struct env_entry *env;