adb_utils.cpp revision 5830577bd82fdb7c39555da20a4cf585b8bb376a 
1/*
2 * Copyright (C) 2015 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#include "adb_utils.h"
18
19#include <sys/stat.h>
20#include <sys/types.h>
21#include <unistd.h>
22
23bool directory_exists(const std::string& path) {
24  struct stat sb;
25  return lstat(path.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode);
26}
27
28static bool should_escape(const char c) {
29  return (c == ' ' || c == '\'' || c == '"' || c == '\\' || c == '(' || c == ')');
30}
31
32std::string escape_arg(const std::string& s) {
33  // Preserve empty arguments.
34  if (s.empty()) return "\"\"";
35
36  std::string result(s);
37  for (auto it = result.begin(); it != result.end(); ++it) {
38      if (should_escape(*it)) {
39          it = result.insert(it, '\\') + 1;
40      }
41  }
42  return result;
43}
44