1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc.  All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
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30
31// Author: kenton@google.com (Kenton Varda)
32// emulates google3/file/base/file.h
33
34#ifndef GOOGLE_PROTOBUF_TESTING_FILE_H__
35#define GOOGLE_PROTOBUF_TESTING_FILE_H__
36
37#include <google/protobuf/stubs/common.h>
38
39namespace google {
40namespace protobuf {
41
42const int DEFAULT_FILE_MODE = 0777;
43
44// Protocol buffer code only uses a couple static methods of File, and only
45// in tests.
46class File {
47 public:
48  // Check if the file exists.
49  static bool Exists(const string& name);
50
51  // Read an entire file to a string.  Return true if successful, false
52  // otherwise.
53  static bool ReadFileToString(const string& name, string* output);
54
55  // Same as above, but crash on failure.
56  static void ReadFileToStringOrDie(const string& name, string* output);
57
58  // Create a file and write a string to it.
59  static bool WriteStringToFile(const string& contents,
60                                const string& name);
61
62  // Same as above, but crash on failure.
63  static void WriteStringToFileOrDie(const string& contents,
64                                     const string& name);
65
66  // Create a directory.
67  static bool CreateDir(const string& name, int mode);
68
69  // Create a directory and all parent directories if necessary.
70  static bool RecursivelyCreateDir(const string& path, int mode);
71
72  // If "name" is a file, we delete it.  If it is a directory, we
73  // call DeleteRecursively() for each file or directory (other than
74  // dot and double-dot) within it, and then delete the directory itself.
75  // The "dummy" parameters have a meaning in the original version of this
76  // method but they are not used anywhere in protocol buffers.
77  static void DeleteRecursively(const string& name,
78                                void* dummy1, void* dummy2);
79
80  static bool GetContents(
81      const string& name, string* output, bool /*is_default*/) {
82    return ReadFileToString(name, output);
83  }
84
85  static bool SetContents(
86      const string& name, const string& contents, bool /*is_default*/) {
87    return WriteStringToFile(contents, name);
88  }
89
90 private:
91  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(File);
92};
93
94}  // namespace protobuf
95}  // namespace google
96
97#endif  // GOOGLE_PROTOBUF_TESTING_FILE_H__
98