adb_utils.cpp revision a7090b94c181f3efe5b53d2c8367b78d99074dfe 
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 <stdlib.h>
20#include <sys/stat.h>
21#include <sys/types.h>
22#include <unistd.h>
23
24bool getcwd(std::string* s) {
25  char* cwd = getcwd(nullptr, 0);
26  if (cwd != nullptr) *s = cwd;
27  free(cwd);
28  return (cwd != nullptr);
29}
30
31bool directory_exists(const std::string& path) {
32  struct stat sb;
33  return lstat(path.c_str(), &sb) != -1 && S_ISDIR(sb.st_mode);
34}
35
36static bool should_escape(const char c) {
37  return (c == ' ' || c == '\'' || c == '"' || c == '\\' || c == '(' || c == ')');
38}
39
40std::string escape_arg(const std::string& s) {
41  // Preserve empty arguments.
42  if (s.empty()) return "\"\"";
43
44  std::string result(s);
45  for (auto it = result.begin(); it != result.end(); ++it) {
46      if (should_escape(*it)) {
47          it = result.insert(it, '\\') + 1;
48      }
49  }
50  return result;
51}
52