// Copyright 2008, Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifdef GTEST_OS_WINDOWS // On Windows, '\\' is the standard path separator, but many tools and the // Windows API also accept '/' as an alternate path separator. Unless otherwise // noted, a file path can contain either kind of path separators, or a mixture // of them. constchar kPathSeparator = '\\'; constchar kAlternatePathSeparator = '/'; constchar kAlternatePathSeparatorString[] = "/"; #ifdef GTEST_OS_WINDOWS_MOBILE // Windows CE doesn't have a current directory. You should not use // the current directory in tests on Windows CE, but this at least // provides a reasonable fallback. constchar kCurrentDirectoryString[] = "\\"; // Windows CE doesn't define INVALID_FILE_ATTRIBUTES const DWORD kInvalidFileAttributes = 0xffffffff; #else constchar kCurrentDirectoryString[] = ".\\"; #endif// GTEST_OS_WINDOWS_MOBILE #else constchar kPathSeparator = '/'; constchar kCurrentDirectoryString[] = "./"; #endif// GTEST_OS_WINDOWS
// Returns whether the given character is a valid path separator. staticbool IsPathSeparator(char c) { #if GTEST_HAS_ALT_PATH_SEP_ return (c == kPathSeparator) || (c == kAlternatePathSeparator); #else return c == kPathSeparator; #endif
}
// Returns the current working directory, or "" if unsuccessful.
FilePath FilePath::GetCurrentDir() { #ifdefined(GTEST_OS_WINDOWS_MOBILE) || defined(GTEST_OS_WINDOWS_PHONE) || \ defined(GTEST_OS_WINDOWS_RT) || defined(GTEST_OS_ESP8266) || \ defined(GTEST_OS_ESP32) || defined(GTEST_OS_XTENSA) || \ defined(GTEST_OS_QURT) || defined(GTEST_OS_NXP_QN9090) || \ defined(GTEST_OS_NRF52) // These platforms do not have a current directory, so we just return // something reasonable. return FilePath(kCurrentDirectoryString); #elifdefined(GTEST_OS_WINDOWS) char cwd[GTEST_PATH_MAX_ + 1] = {'\0'}; return FilePath(_getcwd(cwd, sizeof(cwd)) == nullptr ? "" : cwd); #else char cwd[GTEST_PATH_MAX_ + 1] = {'\0'}; char* result = getcwd(cwd, sizeof(cwd)); #ifdef GTEST_OS_NACL // getcwd will likely fail in NaCl due to the sandbox, so return something // reasonable. The user may have provided a shim implementation for getcwd, // however, so fallback only when failure is detected. return FilePath(result == nullptr ? kCurrentDirectoryString : cwd); #endif// GTEST_OS_NACL return FilePath(result == nullptr ? "" : cwd); #endif// GTEST_OS_WINDOWS_MOBILE
}
// Returns a copy of the FilePath with the case-insensitive extension removed. // Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns // FilePath("dir/file"). If a case-insensitive extension is not // found, returns a copy of the original FilePath.
FilePath FilePath::RemoveExtension(constchar* extension) const { const std::string dot_extension = std::string(".") + extension; if (String::EndsWithCaseInsensitive(pathname_, dot_extension)) { return FilePath(
pathname_.substr(0, pathname_.length() - dot_extension.length()));
} return *this;
}
// Returns a pointer to the last occurrence of a valid path separator in // the FilePath. On Windows, for example, both '/' and '\' are valid path // separators. Returns NULL if no path separator was found. constchar* FilePath::FindLastPathSeparator() const { constchar* const last_sep = strrchr(c_str(), kPathSeparator); #if GTEST_HAS_ALT_PATH_SEP_ constchar* const last_alt_sep = strrchr(c_str(), kAlternatePathSeparator); // Comparing two pointers of which only one is NULL is undefined. if (last_alt_sep != nullptr &&
(last_sep == nullptr || last_alt_sep > last_sep)) { return last_alt_sep;
} #endif return last_sep;
}
size_t FilePath::CalculateRootLength() const { constauto& path = pathname_; auto s = path.begin(); auto end = path.end(); #ifdef GTEST_OS_WINDOWS if (end - s >= 2 && s[1] == ':' && (end - s == 2 || IsPathSeparator(s[2])) &&
(('A' <= s[0] && s[0] <= 'Z') || ('a' <= s[0] && s[0] <= 'z'))) { // A typical absolute path like "C:\Windows" or "D:"
s += 2; if (s != end) {
++s;
}
} elseif (end - s >= 3 && IsPathSeparator(*s) && IsPathSeparator(*(s + 1)) &&
!IsPathSeparator(*(s + 2))) { // Move past the "\\" prefix in a UNC path like "\\Server\Share\Folder"
s += 2; // Skip 2 components and their following separators ("Server\" and "Share\") for (int i = 0; i < 2; ++i) { while (s != end) { bool stop = IsPathSeparator(*s);
++s; if (stop) { break;
}
}
}
} elseif (s != end && IsPathSeparator(*s)) { // A drive-rooted path like "\Windows"
++s;
} #else if (s != end && IsPathSeparator(*s)) {
++s;
} #endif returnstatic_cast<size_t>(s - path.begin());
}
// Returns a copy of the FilePath with the directory part removed. // Example: FilePath("path/to/file").RemoveDirectoryName() returns // FilePath("file"). If there is no directory part ("just_a_file"), it returns // the FilePath unmodified. If there is no file part ("just_a_dir/") it // returns an empty FilePath (""). // On Windows platform, '\' is the path separator, otherwise it is '/'.
FilePath FilePath::RemoveDirectoryName() const { constchar* const last_sep = FindLastPathSeparator(); return last_sep ? FilePath(last_sep + 1) : *this;
}
// RemoveFileName returns the directory path with the filename removed. // Example: FilePath("path/to/file").RemoveFileName() returns "path/to/". // If the FilePath is "a_file" or "/a_file", RemoveFileName returns // FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does // not have a file, like "just/a/dir/", it returns the FilePath unmodified. // On Windows platform, '\' is the path separator, otherwise it is '/'.
FilePath FilePath::RemoveFileName() const { constchar* const last_sep = FindLastPathSeparator();
std::string dir; if (last_sep) {
dir = std::string(c_str(), static_cast<size_t>(last_sep + 1 - c_str()));
} else {
dir = kCurrentDirectoryString;
} return FilePath(dir);
}
// Helper functions for naming files in a directory for xml output.
// Given directory = "dir", base_name = "test", number = 0, // extension = "xml", returns "dir/test.xml". If number is greater // than zero (e.g., 12), returns "dir/test_12.xml". // On Windows platform, uses \ as the separator rather than /.
FilePath FilePath::MakeFileName(const FilePath& directory, const FilePath& base_name, int number, constchar* extension) {
std::string file; if (number == 0) {
file = base_name.string() + "." + extension;
} else {
file =
base_name.string() + "_" + StreamableToString(number) + "." + extension;
} return ConcatPaths(directory, FilePath(file));
}
// Given directory = "dir", relative_path = "test.xml", returns "dir/test.xml". // On Windows, uses \ as the separator rather than /.
FilePath FilePath::ConcatPaths(const FilePath& directory, const FilePath& relative_path) { if (directory.IsEmpty()) return relative_path; const FilePath dir(directory.RemoveTrailingPathSeparator()); return FilePath(dir.string() + kPathSeparator + relative_path.string());
}
// Returns true if pathname describes something findable in the file-system, // either a file, directory, or whatever. bool FilePath::FileOrDirectoryExists() const { #ifdef GTEST_OS_WINDOWS_MOBILE
LPCWSTR unicode = String::AnsiToUtf16(pathname_.c_str()); const DWORD attributes = GetFileAttributes(unicode); delete[] unicode; return attributes != kInvalidFileAttributes; #else
posix::StatStruct file_stat{}; return posix::Stat(pathname_.c_str(), &file_stat) == 0; #endif// GTEST_OS_WINDOWS_MOBILE
}
// Returns true if pathname describes a directory in the file-system // that exists. bool FilePath::DirectoryExists() const { bool result = false; #ifdef GTEST_OS_WINDOWS // Don't strip off trailing separator if path is a root directory on // Windows (like "C:\\"). const FilePath& path(IsRootDirectory() ? *this
: RemoveTrailingPathSeparator()); #else const FilePath& path(*this); #endif
// Returns true if pathname describes a root directory. (Windows has one // root directory per disk drive. UNC share roots are also included.) bool FilePath::IsRootDirectory() const {
size_t root_length = CalculateRootLength(); return root_length > 0 && root_length == pathname_.size() &&
IsPathSeparator(pathname_[root_length - 1]);
}
// Returns true if pathname describes an absolute path. bool FilePath::IsAbsolutePath() const { return CalculateRootLength() > 0; }
// Returns a pathname for a file that does not currently exist. The pathname // will be directory/base_name.extension or // directory/base_name_<number>.extension if directory/base_name.extension // already exists. The number will be incremented until a pathname is found // that does not already exist. // Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'. // There could be a race condition if two or more processes are calling this // function at the same time -- they could both pick the same filename.
FilePath FilePath::GenerateUniqueFileName(const FilePath& directory, const FilePath& base_name, constchar* extension) {
FilePath full_pathname; int number = 0; do {
full_pathname.Set(MakeFileName(directory, base_name, number++, extension));
} while (full_pathname.FileOrDirectoryExists()); return full_pathname;
}
// Returns true if FilePath ends with a path separator, which indicates that // it is intended to represent a directory. Returns false otherwise. // This does NOT check that a directory (or file) actually exists. bool FilePath::IsDirectory() const { return !pathname_.empty() &&
IsPathSeparator(pathname_.c_str()[pathname_.length() - 1]);
}
// Create directories so that path exists. Returns true if successful or if // the directories already exist; returns false if unable to create directories // for any reason. bool FilePath::CreateDirectoriesRecursively() const { if (!this->IsDirectory()) { returnfalse;
}
if (pathname_.empty() || this->DirectoryExists()) { returntrue;
}
// Create the directory so that path exists. Returns true if successful or // if the directory already exists; returns false if unable to create the // directory for any reason, including if the parent directory does not // exist. Not named "CreateDirectory" because that's a macro on Windows. bool FilePath::CreateFolder() const { #ifdef GTEST_OS_WINDOWS_MOBILE
FilePath removed_sep(this->RemoveTrailingPathSeparator());
LPCWSTR unicode = String::AnsiToUtf16(removed_sep.c_str()); int result = CreateDirectory(unicode, nullptr) ? 0 : -1; delete[] unicode; #elifdefined(GTEST_OS_WINDOWS) int result = _mkdir(pathname_.c_str()); #elifdefined(GTEST_OS_ESP8266) || defined(GTEST_OS_XTENSA) || \ defined(GTEST_OS_QURT) || defined(GTEST_OS_NXP_QN9090) || \ defined(GTEST_OS_NRF52) // do nothing int result = 0; #else int result = mkdir(pathname_.c_str(), 0777); #endif// GTEST_OS_WINDOWS_MOBILE
if (result == -1) { return this->DirectoryExists(); // An error is OK if the directory exists.
} returntrue; // No error.
}
// If input name has a trailing separator character, remove it and return the // name, otherwise return the name string unmodified. // On Windows platform, uses \ as the separator, other platforms use /.
FilePath FilePath::RemoveTrailingPathSeparator() const { return IsDirectory() ? FilePath(pathname_.substr(0, pathname_.length() - 1))
: *this;
}
// Removes any redundant separators that might be in the pathname. // For example, "bar///foo" becomes "bar/foo". Does not eliminate other // redundancies that might be in a pathname involving "." or "..". // Note that "\\Host\Share" does not contain a redundancy on Windows! void FilePath::Normalize() { auto out = pathname_.begin();
auto i = pathname_.cbegin(); #ifdef GTEST_OS_WINDOWS // UNC paths are treated specially if (pathname_.end() - i >= 3 && IsPathSeparator(*i) &&
IsPathSeparator(*(i + 1)) && !IsPathSeparator(*(i + 2))) {
*(out++) = kPathSeparator;
*(out++) = kPathSeparator;
} #endif while (i != pathname_.end()) { constchar character = *i; if (!IsPathSeparator(character)) {
*(out++) = character;
} elseif (out == pathname_.begin() || *std::prev(out) != kPathSeparator) {
*(out++) = kPathSeparator;
}
++i;
}
pathname_.erase(out, pathname_.end());
}
} // namespace internal
} // namespace testing
#endif// GTEST_HAS_FILE_SYSTEM
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