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29
30// Google Test filepath utilities
31//
32// This header file declares classes and functions used internally by
33// Google Test. They are subject to change without notice.
34//
35// This file is #included in gtest/internal/gtest-internal.h.
36// Do not include this header file separately!
37
38// IWYU pragma: private, include "gtest/gtest.h"
39// IWYU pragma: friend gtest/.*
40// IWYU pragma: friend gmock/.*
41
42#ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
43#define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
44
45#include <string>
46
47#include "gtest/internal/gtest-port.h"
48#include "gtest/internal/gtest-string.h"
49
50GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
51/* class A needs to have dll-interface to be used by clients of class B */)
52
53#if GTEST_HAS_FILE_SYSTEM
54
55namespace testing {
56namespace internal {
57
58// FilePath - a class for file and directory pathname manipulation which
59// handles platform-specific conventions (like the pathname separator).
60// Used for helper functions for naming files in a directory for xml output.
61// Except for Set methods, all methods are const or static, which provides an
62// "immutable value object" -- useful for peace of mind.
63// A FilePath with a value ending in a path separator ("like/this/") represents
64// a directory, otherwise it is assumed to represent a file. In either case,
65// it may or may not represent an actual file or directory in the file system.
66// Names are NOT checked for syntax correctness -- no checking for illegal
67// characters, malformed paths, etc.
68
69class GTEST_API_ FilePath {
70 public:
71 FilePath() : pathname_("") {}
72 FilePath(const FilePath& rhs) : pathname_(rhs.pathname_) {}
73
74 explicit FilePath(const std::string& pathname) : pathname_(pathname) {
75 Normalize();
76 }
77
78 FilePath& operator=(const FilePath& rhs) {
79 Set(rhs);
80 return *this;
81 }
82
83 void Set(const FilePath& rhs) { pathname_ = rhs.pathname_; }
84
85 const std::string& string() const { return pathname_; }
86 const char* c_str() const { return pathname_.c_str(); }
87
88 // Returns the current working directory, or "" if unsuccessful.
89 static FilePath GetCurrentDir();
90
91 // Given directory = "dir", base_name = "test", number = 0,
92 // extension = "xml", returns "dir/test.xml". If number is greater
93 // than zero (e.g., 12), returns "dir/test_12.xml".
94 // On Windows platform, uses \ as the separator rather than /.
95 static FilePath MakeFileName(const FilePath& directory,
96 const FilePath& base_name, int number,
97 const char* extension);
98
99 // Given directory = "dir", relative_path = "test.xml",
100 // returns "dir/test.xml".
101 // On Windows, uses \ as the separator rather than /.
102 static FilePath ConcatPaths(const FilePath& directory,
103 const FilePath& relative_path);
104
105 // Returns a pathname for a file that does not currently exist. The pathname
106 // will be directory/base_name.extension or
107 // directory/base_name_<number>.extension if directory/base_name.extension
108 // already exists. The number will be incremented until a pathname is found
109 // that does not already exist.
110 // Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'.
111 // There could be a race condition if two or more processes are calling this
112 // function at the same time -- they could both pick the same filename.
113 static FilePath GenerateUniqueFileName(const FilePath& directory,
114 const FilePath& base_name,
115 const char* extension);
116
117 // Returns true if and only if the path is "".
118 bool IsEmpty() const { return pathname_.empty(); }
119
120 // If input name has a trailing separator character, removes it and returns
121 // the name, otherwise return the name string unmodified.
122 // On Windows platform, uses \ as the separator, other platforms use /.
123 FilePath RemoveTrailingPathSeparator() const;
124
125 // Returns a copy of the FilePath with the directory part removed.
126 // Example: FilePath("path/to/file").RemoveDirectoryName() returns
127 // FilePath("file"). If there is no directory part ("just_a_file"), it returns
128 // the FilePath unmodified. If there is no file part ("just_a_dir/") it
129 // returns an empty FilePath ("").
130 // On Windows platform, '\' is the path separator, otherwise it is '/'.
131 FilePath RemoveDirectoryName() const;
132
133 // RemoveFileName returns the directory path with the filename removed.
134 // Example: FilePath("path/to/file").RemoveFileName() returns "path/to/".
135 // If the FilePath is "a_file" or "/a_file", RemoveFileName returns
136 // FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does
137 // not have a file, like "just/a/dir/", it returns the FilePath unmodified.
138 // On Windows platform, '\' is the path separator, otherwise it is '/'.
139 FilePath RemoveFileName() const;
140
141 // Returns a copy of the FilePath with the case-insensitive extension removed.
142 // Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns
143 // FilePath("dir/file"). If a case-insensitive extension is not
144 // found, returns a copy of the original FilePath.
145 FilePath RemoveExtension(const char* extension) const;
146
147 // Creates directories so that path exists. Returns true if successful or if
148 // the directories already exist; returns false if unable to create
149 // directories for any reason. Will also return false if the FilePath does
150 // not represent a directory (that is, it doesn't end with a path separator).
151 bool CreateDirectoriesRecursively() const;
152
153 // Create the directory so that path exists. Returns true if successful or
154 // if the directory already exists; returns false if unable to create the
155 // directory for any reason, including if the parent directory does not
156 // exist. Not named "CreateDirectory" because that's a macro on Windows.
157 bool CreateFolder() const;
158
159 // Returns true if FilePath describes something in the file-system,
160 // either a file, directory, or whatever, and that something exists.
161 bool FileOrDirectoryExists() const;
162
163 // Returns true if pathname describes a directory in the file-system
164 // that exists.
165 bool DirectoryExists() const;
166
167 // Returns true if FilePath ends with a path separator, which indicates that
168 // it is intended to represent a directory. Returns false otherwise.
169 // This does NOT check that a directory (or file) actually exists.
170 bool IsDirectory() const;
171
172 // Returns true if pathname describes a root directory. (Windows has one
173 // root directory per disk drive.)
174 bool IsRootDirectory() const;
175
176 // Returns true if pathname describes an absolute path.
177 bool IsAbsolutePath() const;
178
179 private:
180 // Replaces multiple consecutive separators with a single separator.
181 // For example, "bar///foo" becomes "bar/foo". Does not eliminate other
182 // redundancies that might be in a pathname involving "." or "..".
183 //
184 // A pathname with multiple consecutive separators may occur either through
185 // user error or as a result of some scripts or APIs that generate a pathname
186 // with a trailing separator. On other platforms the same API or script
187 // may NOT generate a pathname with a trailing "/". Then elsewhere that
188 // pathname may have another "/" and pathname components added to it,
189 // without checking for the separator already being there.
190 // The script language and operating system may allow paths like "foo//bar"
191 // but some of the functions in FilePath will not handle that correctly. In
192 // particular, RemoveTrailingPathSeparator() only removes one separator, and
193 // it is called in CreateDirectoriesRecursively() assuming that it will change
194 // a pathname from directory syntax (trailing separator) to filename syntax.
195 //
196 // On Windows this method also replaces the alternate path separator '/' with
197 // the primary path separator '\\', so that for example "bar\\/\\foo" becomes
198 // "bar\\foo".
199
200 void Normalize();
201
202 // Returns a pointer to the last occurrence of a valid path separator in
203 // the FilePath. On Windows, for example, both '/' and '\' are valid path
204 // separators. Returns NULL if no path separator was found.
205 const char* FindLastPathSeparator() const;
206
207 // Returns the length of the path root, including the directory separator at
208 // the end of the prefix. Returns zero by definition if the path is relative.
209 // Examples:
210 // - [Windows] "..\Sibling" => 0
211 // - [Windows] "\Windows" => 1
212 // - [Windows] "C:/Windows\Notepad.exe" => 3
213 // - [Windows] "\\Host\Share\C$/Windows" => 13
214 // - [UNIX] "/bin" => 1
215 size_t CalculateRootLength() const;
216
217 std::string pathname_;
218}; // class FilePath
219
220} // namespace internal
221} // namespace testing
222
223GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
224
225#endif // GTEST_HAS_FILE_SYSTEM
226
227#endif // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
228