1 /*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /**
18 * This is a host-side tool for validating a given edify script file.
19 *
20 * We used to have edify test cases here, which have been moved to
21 * tests/component/edify_test.cpp.
22 *
23 * Caveat: It doesn't recognize functions defined through updater, which
24 * makes the tool less useful. We should either extend the tool or remove it.
25 */
26
27 #include <errno.h>
28 #include <stdio.h>
29
30 #include <memory>
31 #include <string>
32
33 #include <android-base/file.h>
34
35 #include "expr.h"
36
ExprDump(int depth,const std::unique_ptr<Expr> & n,const std::string & script)37 static void ExprDump(int depth, const std::unique_ptr<Expr>& n, const std::string& script) {
38 printf("%*s", depth*2, "");
39 printf("%s %p (%d-%d) \"%s\"\n",
40 n->name.c_str(), n->fn, n->start, n->end,
41 script.substr(n->start, n->end - n->start).c_str());
42 for (size_t i = 0; i < n->argv.size(); ++i) {
43 ExprDump(depth+1, n->argv[i], script);
44 }
45 }
46
main(int argc,char ** argv)47 int main(int argc, char** argv) {
48 RegisterBuiltins();
49
50 if (argc != 2) {
51 printf("Usage: %s <edify script>\n", argv[0]);
52 return 1;
53 }
54
55 std::string buffer;
56 if (!android::base::ReadFileToString(argv[1], &buffer)) {
57 printf("%s: failed to read %s: %s\n", argv[0], argv[1], strerror(errno));
58 return 1;
59 }
60
61 std::unique_ptr<Expr> root;
62 int error_count = 0;
63 int error = parse_string(buffer.data(), &root, &error_count);
64 printf("parse returned %d; %d errors encountered\n", error, error_count);
65 if (error == 0 || error_count > 0) {
66
67 ExprDump(0, root, buffer);
68
69 State state(buffer, nullptr);
70 std::string result;
71 if (!Evaluate(&state, root, &result)) {
72 printf("result was NULL, message is: %s\n",
73 (state.errmsg.empty() ? "(NULL)" : state.errmsg.c_str()));
74 } else {
75 printf("result is [%s]\n", result.c_str());
76 }
77 }
78 return 0;
79 }
80