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381 lines
14 KiB
C++
Executable File
381 lines
14 KiB
C++
Executable File
// Copyright 2008, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Authors: keith.ray@gmail.com (Keith Ray)
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#include "gtest/internal/gtest-filepath.h"
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#include "gtest/internal/gtest-port.h"
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#include <stdlib.h>
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#if GTEST_OS_WINDOWS_MOBILE
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# include <windows.h>
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#elif GTEST_OS_WINDOWS
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# include <direct.h>
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# include <io.h>
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#elif GTEST_OS_SYMBIAN || GTEST_OS_NACL
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// Symbian OpenC and NaCl have PATH_MAX in sys/syslimits.h
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# include <sys/syslimits.h>
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#else
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# include <limits.h>
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# include <climits> // Some Linux distributions define PATH_MAX here.
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#endif // GTEST_OS_WINDOWS_MOBILE
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#if GTEST_OS_WINDOWS
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# define GTEST_PATH_MAX_ _MAX_PATH
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#elif defined(PATH_MAX)
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# define GTEST_PATH_MAX_ PATH_MAX
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#elif defined(_XOPEN_PATH_MAX)
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# define GTEST_PATH_MAX_ _XOPEN_PATH_MAX
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#else
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# define GTEST_PATH_MAX_ _POSIX_PATH_MAX
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#endif // GTEST_OS_WINDOWS
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#include "gtest/internal/gtest-string.h"
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namespace testing {
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namespace internal {
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#if GTEST_OS_WINDOWS
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// On Windows, '\\' is the standard path separator, but many tools and the
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// Windows API also accept '/' as an alternate path separator. Unless otherwise
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// noted, a file path can contain either kind of path separators, or a mixture
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// of them.
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const char kPathSeparator = '\\';
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const char kAlternatePathSeparator = '/';
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const char kPathSeparatorString[] = "\\";
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const char kAlternatePathSeparatorString[] = "/";
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# if GTEST_OS_WINDOWS_MOBILE
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// Windows CE doesn't have a current directory. You should not use
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// the current directory in tests on Windows CE, but this at least
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// provides a reasonable fallback.
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const char kCurrentDirectoryString[] = "\\";
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// Windows CE doesn't define INVALID_FILE_ATTRIBUTES
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const DWORD kInvalidFileAttributes = 0xffffffff;
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# else
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const char kCurrentDirectoryString[] = ".\\";
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# endif // GTEST_OS_WINDOWS_MOBILE
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#else
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const char kPathSeparator = '/';
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const char kPathSeparatorString[] = "/";
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const char kCurrentDirectoryString[] = "./";
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#endif // GTEST_OS_WINDOWS
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// Returns whether the given character is a valid path separator.
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static bool IsPathSeparator(char c) {
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#if GTEST_HAS_ALT_PATH_SEP_
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return (c == kPathSeparator) || (c == kAlternatePathSeparator);
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#else
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return c == kPathSeparator;
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#endif
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}
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// Returns the current working directory, or "" if unsuccessful.
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FilePath FilePath::GetCurrentDir() {
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#if GTEST_OS_WINDOWS_MOBILE
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// Windows CE doesn't have a current directory, so we just return
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// something reasonable.
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return FilePath(kCurrentDirectoryString);
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#elif GTEST_OS_WINDOWS
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char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
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return FilePath(_getcwd(cwd, sizeof(cwd)) == NULL ? "" : cwd);
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#else
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char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
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return FilePath(getcwd(cwd, sizeof(cwd)) == NULL ? "" : cwd);
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#endif // GTEST_OS_WINDOWS_MOBILE
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}
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// Returns a copy of the FilePath with the case-insensitive extension removed.
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// Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns
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// FilePath("dir/file"). If a case-insensitive extension is not
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// found, returns a copy of the original FilePath.
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FilePath FilePath::RemoveExtension(const char* extension) const {
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String dot_extension(String::Format(".%s", extension));
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if (pathname_.EndsWithCaseInsensitive(dot_extension.c_str())) {
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return FilePath(String(pathname_.c_str(), pathname_.length() - 4));
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}
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return *this;
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}
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// Returns a pointer to the last occurence of a valid path separator in
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// the FilePath. On Windows, for example, both '/' and '\' are valid path
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// separators. Returns NULL if no path separator was found.
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const char* FilePath::FindLastPathSeparator() const {
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const char* const last_sep = strrchr(c_str(), kPathSeparator);
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#if GTEST_HAS_ALT_PATH_SEP_
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const char* const last_alt_sep = strrchr(c_str(), kAlternatePathSeparator);
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// Comparing two pointers of which only one is NULL is undefined.
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if (last_alt_sep != NULL &&
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(last_sep == NULL || last_alt_sep > last_sep)) {
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return last_alt_sep;
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}
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#endif
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return last_sep;
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}
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// Returns a copy of the FilePath with the directory part removed.
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// Example: FilePath("path/to/file").RemoveDirectoryName() returns
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// FilePath("file"). If there is no directory part ("just_a_file"), it returns
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// the FilePath unmodified. If there is no file part ("just_a_dir/") it
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// returns an empty FilePath ("").
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// On Windows platform, '\' is the path separator, otherwise it is '/'.
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FilePath FilePath::RemoveDirectoryName() const {
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const char* const last_sep = FindLastPathSeparator();
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return last_sep ? FilePath(String(last_sep + 1)) : *this;
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}
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// RemoveFileName returns the directory path with the filename removed.
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// Example: FilePath("path/to/file").RemoveFileName() returns "path/to/".
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// If the FilePath is "a_file" or "/a_file", RemoveFileName returns
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// FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does
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// not have a file, like "just/a/dir/", it returns the FilePath unmodified.
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// On Windows platform, '\' is the path separator, otherwise it is '/'.
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FilePath FilePath::RemoveFileName() const {
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const char* const last_sep = FindLastPathSeparator();
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String dir;
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if (last_sep) {
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dir = String(c_str(), last_sep + 1 - c_str());
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} else {
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dir = kCurrentDirectoryString;
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}
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return FilePath(dir);
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}
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// Helper functions for naming files in a directory for xml output.
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// Given directory = "dir", base_name = "test", number = 0,
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// extension = "xml", returns "dir/test.xml". If number is greater
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// than zero (e.g., 12), returns "dir/test_12.xml".
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// On Windows platform, uses \ as the separator rather than /.
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FilePath FilePath::MakeFileName(const FilePath& directory,
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const FilePath& base_name,
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int number,
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const char* extension) {
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String file;
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if (number == 0) {
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file = String::Format("%s.%s", base_name.c_str(), extension);
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} else {
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file = String::Format("%s_%d.%s", base_name.c_str(), number, extension);
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}
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return ConcatPaths(directory, FilePath(file));
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}
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// Given directory = "dir", relative_path = "test.xml", returns "dir/test.xml".
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// On Windows, uses \ as the separator rather than /.
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FilePath FilePath::ConcatPaths(const FilePath& directory,
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const FilePath& relative_path) {
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if (directory.IsEmpty())
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return relative_path;
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const FilePath dir(directory.RemoveTrailingPathSeparator());
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return FilePath(String::Format("%s%c%s", dir.c_str(), kPathSeparator,
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relative_path.c_str()));
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}
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// Returns true if pathname describes something findable in the file-system,
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// either a file, directory, or whatever.
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bool FilePath::FileOrDirectoryExists() const {
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#if GTEST_OS_WINDOWS_MOBILE
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LPCWSTR unicode = String::AnsiToUtf16(pathname_.c_str());
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const DWORD attributes = GetFileAttributes(unicode);
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delete [] unicode;
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return attributes != kInvalidFileAttributes;
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#else
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posix::StatStruct file_stat;
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return posix::Stat(pathname_.c_str(), &file_stat) == 0;
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#endif // GTEST_OS_WINDOWS_MOBILE
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}
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// Returns true if pathname describes a directory in the file-system
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// that exists.
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bool FilePath::DirectoryExists() const {
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bool result = false;
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#if GTEST_OS_WINDOWS
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// Don't strip off trailing separator if path is a root directory on
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// Windows (like "C:\\").
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const FilePath& path(IsRootDirectory() ? *this :
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RemoveTrailingPathSeparator());
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#else
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const FilePath& path(*this);
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#endif
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#if GTEST_OS_WINDOWS_MOBILE
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LPCWSTR unicode = String::AnsiToUtf16(path.c_str());
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const DWORD attributes = GetFileAttributes(unicode);
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delete [] unicode;
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if ((attributes != kInvalidFileAttributes) &&
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(attributes & FILE_ATTRIBUTE_DIRECTORY)) {
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result = true;
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}
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#else
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posix::StatStruct file_stat;
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result = posix::Stat(path.c_str(), &file_stat) == 0 &&
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posix::IsDir(file_stat);
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#endif // GTEST_OS_WINDOWS_MOBILE
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return result;
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}
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// Returns true if pathname describes a root directory. (Windows has one
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// root directory per disk drive.)
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bool FilePath::IsRootDirectory() const {
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#if GTEST_OS_WINDOWS
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// TODO(wan@google.com): on Windows a network share like
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// \\server\share can be a root directory, although it cannot be the
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// current directory. Handle this properly.
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return pathname_.length() == 3 && IsAbsolutePath();
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#else
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return pathname_.length() == 1 && IsPathSeparator(pathname_.c_str()[0]);
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#endif
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}
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// Returns true if pathname describes an absolute path.
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bool FilePath::IsAbsolutePath() const {
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const char* const name = pathname_.c_str();
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#if GTEST_OS_WINDOWS
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return pathname_.length() >= 3 &&
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((name[0] >= 'a' && name[0] <= 'z') ||
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(name[0] >= 'A' && name[0] <= 'Z')) &&
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name[1] == ':' &&
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IsPathSeparator(name[2]);
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#else
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return IsPathSeparator(name[0]);
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#endif
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}
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// Returns a pathname for a file that does not currently exist. The pathname
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// will be directory/base_name.extension or
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// directory/base_name_<number>.extension if directory/base_name.extension
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// already exists. The number will be incremented until a pathname is found
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// that does not already exist.
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// Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'.
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// There could be a race condition if two or more processes are calling this
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// function at the same time -- they could both pick the same filename.
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FilePath FilePath::GenerateUniqueFileName(const FilePath& directory,
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const FilePath& base_name,
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const char* extension) {
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FilePath full_pathname;
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int number = 0;
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do {
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full_pathname.Set(MakeFileName(directory, base_name, number++, extension));
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} while (full_pathname.FileOrDirectoryExists());
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return full_pathname;
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}
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// Returns true if FilePath ends with a path separator, which indicates that
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// it is intended to represent a directory. Returns false otherwise.
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// This does NOT check that a directory (or file) actually exists.
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bool FilePath::IsDirectory() const {
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return !pathname_.empty() &&
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IsPathSeparator(pathname_.c_str()[pathname_.length() - 1]);
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}
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// Create directories so that path exists. Returns true if successful or if
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// the directories already exist; returns false if unable to create directories
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// for any reason.
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bool FilePath::CreateDirectoriesRecursively() const {
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if (!this->IsDirectory()) {
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return false;
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}
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if (pathname_.length() == 0 || this->DirectoryExists()) {
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return true;
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}
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const FilePath parent(this->RemoveTrailingPathSeparator().RemoveFileName());
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return parent.CreateDirectoriesRecursively() && this->CreateFolder();
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}
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// Create the directory so that path exists. Returns true if successful or
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// if the directory already exists; returns false if unable to create the
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// directory for any reason, including if the parent directory does not
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// exist. Not named "CreateDirectory" because that's a macro on Windows.
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bool FilePath::CreateFolder() const {
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#if GTEST_OS_WINDOWS_MOBILE
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FilePath removed_sep(this->RemoveTrailingPathSeparator());
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LPCWSTR unicode = String::AnsiToUtf16(removed_sep.c_str());
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int result = CreateDirectory(unicode, NULL) ? 0 : -1;
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delete [] unicode;
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#elif GTEST_OS_WINDOWS
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int result = _mkdir(pathname_.c_str());
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#else
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int result = mkdir(pathname_.c_str(), 0777);
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#endif // GTEST_OS_WINDOWS_MOBILE
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if (result == -1) {
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return this->DirectoryExists(); // An error is OK if the directory exists.
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}
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return true; // No error.
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}
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// If input name has a trailing separator character, remove it and return the
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// name, otherwise return the name string unmodified.
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// On Windows platform, uses \ as the separator, other platforms use /.
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FilePath FilePath::RemoveTrailingPathSeparator() const {
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return IsDirectory()
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? FilePath(String(pathname_.c_str(), pathname_.length() - 1))
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: *this;
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}
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// Removes any redundant separators that might be in the pathname.
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// For example, "bar///foo" becomes "bar/foo". Does not eliminate other
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// redundancies that might be in a pathname involving "." or "..".
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// TODO(wan@google.com): handle Windows network shares (e.g. \\server\share).
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void FilePath::Normalize() {
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if (pathname_.c_str() == NULL) {
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pathname_ = "";
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return;
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}
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const char* src = pathname_.c_str();
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char* const dest = new char[pathname_.length() + 1];
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char* dest_ptr = dest;
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memset(dest_ptr, 0, pathname_.length() + 1);
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while (*src != '\0') {
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*dest_ptr = *src;
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if (!IsPathSeparator(*src)) {
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src++;
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} else {
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#if GTEST_HAS_ALT_PATH_SEP_
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if (*dest_ptr == kAlternatePathSeparator) {
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*dest_ptr = kPathSeparator;
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}
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#endif
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while (IsPathSeparator(*src))
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src++;
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}
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dest_ptr++;
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}
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*dest_ptr = '\0';
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pathname_ = dest;
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delete[] dest;
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}
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} // namespace internal
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} // namespace testing
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