The Tor Browser: media/webrtc/trunk/testing/gtest/src/gtest-port.cc@4ab42b5ab56c (annotated)

media/webrtc/trunk/testing/gtest/src/gtest-port.cc@4ab42b5ab56c (annotated)

media/webrtc/trunk/testing/gtest/src/gtest-port.cc

Wed, 31 Dec 2014 07:53:36 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:53:36 +0100
branch: TOR_BUG_3246
changeset 5: 4ab42b5ab56c
permissions: -rw-r--r--

Correct small whitespace inconsistency, lost while renaming variables.

 // 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.
 //
 // Author: wan@google.com (Zhanyong Wan)
 #include "gtest/internal/gtest-port.h"
 #include <limits.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if GTEST_OS_WINDOWS_MOBILE
 # include <windows.h>  // For TerminateProcess()
 #elif GTEST_OS_WINDOWS
 # include <io.h>
 # include <sys/stat.h>
 #else
 # include <unistd.h>
 #endif  // GTEST_OS_WINDOWS_MOBILE
 #if GTEST_OS_MAC
 # include <mach/mach_init.h>
 # include <mach/task.h>
 # include <mach/vm_map.h>
 #endif  // GTEST_OS_MAC
 #if GTEST_OS_QNX
 # include <devctl.h>
 # include <sys/procfs.h>
 #endif  // GTEST_OS_QNX
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest-message.h"
 #include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-string.h"
 // Indicates that this translation unit is part of Google Test's
 // implementation.  It must come before gtest-internal-inl.h is
 // included, or there will be a compiler error.  This trick is to
 // prevent a user from accidentally including gtest-internal-inl.h in
 // his code.
 #define GTEST_IMPLEMENTATION_ 1
 #include "src/gtest-internal-inl.h"
 #undef GTEST_IMPLEMENTATION_
 namespace testing {
 namespace internal {
 #if defined(_MSC_VER) || defined(__BORLANDC__)
 // MSVC and C++Builder do not provide a definition of STDERR_FILENO.
 const int kStdOutFileno = 1;
 const int kStdErrFileno = 2;
 #else
 const int kStdOutFileno = STDOUT_FILENO;
 const int kStdErrFileno = STDERR_FILENO;
 #endif  // _MSC_VER
 #if GTEST_OS_MAC
 // Returns the number of threads running in the process, or 0 to indicate that
 // we cannot detect it.
 size_t GetThreadCount() {
   const task_t task = mach_task_self();
   mach_msg_type_number_t thread_count;
   thread_act_array_t thread_list;
   const kern_return_t status = task_threads(task, &thread_list, &thread_count);
   if (status == KERN_SUCCESS) {
     // task_threads allocates resources in thread_list and we need to free them
     // to avoid leaks.
     vm_deallocate(task,
                   reinterpret_cast<vm_address_t>(thread_list),
                   sizeof(thread_t) * thread_count);
     return static_cast<size_t>(thread_count);
   } else {
     return 0;
   }
 }
 #elif GTEST_OS_QNX
 // Returns the number of threads running in the process, or 0 to indicate that
 // we cannot detect it.
 size_t GetThreadCount() {
   const int fd = open("/proc/self/as", O_RDONLY);
   if (fd < 0) {
     return 0;
   }
   procfs_info process_info;
   const int status =
       devctl(fd, DCMD_PROC_INFO, &process_info, sizeof(process_info), NULL);
   close(fd);
   if (status == EOK) {
     return static_cast<size_t>(process_info.num_threads);
   } else {
     return 0;
   }
 }
 #else
 size_t GetThreadCount() {
   // There's no portable way to detect the number of threads, so we just
   // return 0 to indicate that we cannot detect it.
   return 0;
 }
 #endif  // GTEST_OS_MAC
 #if GTEST_USES_POSIX_RE
 // Implements RE.  Currently only needed for death tests.
 RE::~RE() {
   if (is_valid_) {
     // regfree'ing an invalid regex might crash because the content
     // of the regex is undefined. Since the regex's are essentially
     // the same, one cannot be valid (or invalid) without the other
     // being so too.
     regfree(&partial_regex_);
     regfree(&full_regex_);
   }
   free(const_cast<char*>(pattern_));
 }
 // Returns true iff regular expression re matches the entire str.
 bool RE::FullMatch(const char* str, const RE& re) {
   if (!re.is_valid_) return false;
   regmatch_t match;
   return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
 }
 // Returns true iff regular expression re matches a substring of str
 // (including str itself).
 bool RE::PartialMatch(const char* str, const RE& re) {
   if (!re.is_valid_) return false;
   regmatch_t match;
   return regexec(&re.partial_regex_, str, 1, &match, 0) == 0;
 }
 // Initializes an RE from its string representation.
 void RE::Init(const char* regex) {
   pattern_ = posix::StrDup(regex);
   // Reserves enough bytes to hold the regular expression used for a
   // full match.
   const size_t full_regex_len = strlen(regex) + 10;
   char* const full_pattern = new char[full_regex_len];
   snprintf(full_pattern, full_regex_len, "^(%s)$", regex);
   is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0;
   // We want to call regcomp(&partial_regex_, ...) even if the
   // previous expression returns false.  Otherwise partial_regex_ may
   // not be properly initialized can may cause trouble when it's
   // freed.
   //
   // Some implementation of POSIX regex (e.g. on at least some
   // versions of Cygwin) doesn't accept the empty string as a valid
   // regex.  We change it to an equivalent form "()" to be safe.
   if (is_valid_) {
     const char* const partial_regex = (*regex == '\0') ? "()" : regex;
     is_valid_ = regcomp(&partial_regex_, partial_regex, REG_EXTENDED) == 0;
   }
   EXPECT_TRUE(is_valid_)
       << "Regular expression \"" << regex
       << "\" is not a valid POSIX Extended regular expression.";
   delete[] full_pattern;
 }
 #elif GTEST_USES_SIMPLE_RE
 // Returns true iff ch appears anywhere in str (excluding the
 // terminating '\0' character).
 bool IsInSet(char ch, const char* str) {
   return ch != '\0' && strchr(str, ch) != NULL;
 }
 // Returns true iff ch belongs to the given classification.  Unlike
 // similar functions in <ctype.h>, these aren't affected by the
 // current locale.
 bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
 bool IsAsciiPunct(char ch) {
   return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
 }
 bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
 bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
 bool IsAsciiWordChar(char ch) {
   return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') ||
       ('0' <= ch && ch <= '9') || ch == '_';
 }
 // Returns true iff "\\c" is a supported escape sequence.
 bool IsValidEscape(char c) {
   return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
 }
 // Returns true iff the given atom (specified by escaped and pattern)
 // matches ch.  The result is undefined if the atom is invalid.
 bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
   if (escaped) {  // "\\p" where p is pattern_char.
     switch (pattern_char) {
       case 'd': return IsAsciiDigit(ch);
       case 'D': return !IsAsciiDigit(ch);
       case 'f': return ch == '\f';
       case 'n': return ch == '\n';
       case 'r': return ch == '\r';
       case 's': return IsAsciiWhiteSpace(ch);
       case 'S': return !IsAsciiWhiteSpace(ch);
       case 't': return ch == '\t';
       case 'v': return ch == '\v';
       case 'w': return IsAsciiWordChar(ch);
       case 'W': return !IsAsciiWordChar(ch);
     }
     return IsAsciiPunct(pattern_char) && pattern_char == ch;
   }
   return (pattern_char == '.' && ch != '\n') || pattern_char == ch;
 }
 // Helper function used by ValidateRegex() to format error messages.
 String FormatRegexSyntaxError(const char* regex, int index) {
   return (Message() << "Syntax error at index " << index
           << " in simple regular expression \"" << regex << "\": ").GetString();
 }
 // Generates non-fatal failures and returns false if regex is invalid;
 // otherwise returns true.
 bool ValidateRegex(const char* regex) {
   if (regex == NULL) {
     // TODO(wan@google.com): fix the source file location in the
     // assertion failures to match where the regex is used in user
     // code.
     ADD_FAILURE() << "NULL is not a valid simple regular expression.";
     return false;
   }
   bool is_valid = true;
   // True iff ?, *, or + can follow the previous atom.
   bool prev_repeatable = false;
   for (int i = 0; regex[i]; i++) {
     if (regex[i] == '\\') {  // An escape sequence
       i++;
       if (regex[i] == '\0') {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
                       << "'\\' cannot appear at the end.";
         return false;
       }
       if (!IsValidEscape(regex[i])) {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
                       << "invalid escape sequence \"\\" << regex[i] << "\".";
         is_valid = false;
       }
       prev_repeatable = true;
     } else {  // Not an escape sequence.
       const char ch = regex[i];
       if (ch == '^' && i > 0) {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
                       << "'^' can only appear at the beginning.";
         is_valid = false;
       } else if (ch == '$' && regex[i + 1] != '\0') {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
                       << "'$' can only appear at the end.";
         is_valid = false;
       } else if (IsInSet(ch, "()[]{}|")) {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
                       << "'" << ch << "' is unsupported.";
         is_valid = false;
       } else if (IsRepeat(ch) && !prev_repeatable) {
         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
                       << "'" << ch << "' can only follow a repeatable token.";
         is_valid = false;
       }
       prev_repeatable = !IsInSet(ch, "^$?*+");
     }
   }
   return is_valid;
 }
 // Matches a repeated regex atom followed by a valid simple regular
 // expression.  The regex atom is defined as c if escaped is false,
 // or \c otherwise.  repeat is the repetition meta character (?, *,
 // or +).  The behavior is undefined if str contains too many
 // characters to be indexable by size_t, in which case the test will
 // probably time out anyway.  We are fine with this limitation as
 // std::string has it too.
 bool MatchRepetitionAndRegexAtHead(
     bool escaped, char c, char repeat, const char* regex,
     const char* str) {
   const size_t min_count = (repeat == '+') ? 1 : 0;
   const size_t max_count = (repeat == '?') ? 1 :
       static_cast<size_t>(-1) - 1;
   // We cannot call numeric_limits::max() as it conflicts with the
   // max() macro on Windows.
   for (size_t i = 0; i <= max_count; ++i) {
     // We know that the atom matches each of the first i characters in str.
     if (i >= min_count && MatchRegexAtHead(regex, str + i)) {
       // We have enough matches at the head, and the tail matches too.
       // Since we only care about *whether* the pattern matches str
       // (as opposed to *how* it matches), there is no need to find a
       // greedy match.
       return true;
     }
     if (str[i] == '\0' || !AtomMatchesChar(escaped, c, str[i]))
       return false;
   }
   return false;
 }
 // Returns true iff regex matches a prefix of str.  regex must be a
 // valid simple regular expression and not start with "^", or the
 // result is undefined.
 bool MatchRegexAtHead(const char* regex, const char* str) {
   if (*regex == '\0')  // An empty regex matches a prefix of anything.
     return true;
   // "$" only matches the end of a string.  Note that regex being
   // valid guarantees that there's nothing after "$" in it.
   if (*regex == '$')
     return *str == '\0';
   // Is the first thing in regex an escape sequence?
   const bool escaped = *regex == '\\';
   if (escaped)
     ++regex;
   if (IsRepeat(regex[1])) {
     // MatchRepetitionAndRegexAtHead() calls MatchRegexAtHead(), so
     // here's an indirect recursion.  It terminates as the regex gets
     // shorter in each recursion.
     return MatchRepetitionAndRegexAtHead(
         escaped, regex[0], regex[1], regex + 2, str);
   } else {
     // regex isn't empty, isn't "$", and doesn't start with a
     // repetition.  We match the first atom of regex with the first
     // character of str and recurse.
     return (*str != '\0') && AtomMatchesChar(escaped, *regex, *str) &&
         MatchRegexAtHead(regex + 1, str + 1);
   }
 }
 // Returns true iff regex matches any substring of str.  regex must be
 // a valid simple regular expression, or the result is undefined.
 //
 // The algorithm is recursive, but the recursion depth doesn't exceed
 // the regex length, so we won't need to worry about running out of
 // stack space normally.  In rare cases the time complexity can be
 // exponential with respect to the regex length + the string length,
 // but usually it's must faster (often close to linear).
 bool MatchRegexAnywhere(const char* regex, const char* str) {
   if (regex == NULL || str == NULL)
     return false;
   if (*regex == '^')
     return MatchRegexAtHead(regex + 1, str);
   // A successful match can be anywhere in str.
   do {
     if (MatchRegexAtHead(regex, str))
       return true;
   } while (*str++ != '\0');
   return false;
 }
 // Implements the RE class.
 RE::~RE() {
   free(const_cast<char*>(pattern_));
   free(const_cast<char*>(full_pattern_));
 }
 // Returns true iff regular expression re matches the entire str.
 bool RE::FullMatch(const char* str, const RE& re) {
   return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str);
 }
 // Returns true iff regular expression re matches a substring of str
 // (including str itself).
 bool RE::PartialMatch(const char* str, const RE& re) {
   return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str);
 }
 // Initializes an RE from its string representation.
 void RE::Init(const char* regex) {
   pattern_ = full_pattern_ = NULL;
   if (regex != NULL) {
     pattern_ = posix::StrDup(regex);
   }
   is_valid_ = ValidateRegex(regex);
   if (!is_valid_) {
     // No need to calculate the full pattern when the regex is invalid.
     return;
   }
   const size_t len = strlen(regex);
   // Reserves enough bytes to hold the regular expression used for a
   // full match: we need space to prepend a '^', append a '$', and
   // terminate the string with '\0'.
   char* buffer = static_cast<char*>(malloc(len + 3));
   full_pattern_ = buffer;
   if (*regex != '^')
     *buffer++ = '^';  // Makes sure full_pattern_ starts with '^'.
   // We don't use snprintf or strncpy, as they trigger a warning when
   // compiled with VC++ 8.0.
   memcpy(buffer, regex, len);
   buffer += len;
   if (len == 0 || regex[len - 1] != '$')
     *buffer++ = '$';  // Makes sure full_pattern_ ends with '$'.
   *buffer = '\0';
 }
 #endif  // GTEST_USES_POSIX_RE
 const char kUnknownFile[] = "unknown file";
 // Formats a source file path and a line number as they would appear
 // in an error message from the compiler used to compile this code.
 GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
   const char* const file_name = file == NULL ? kUnknownFile : file;
   if (line < 0) {
     return String::Format("%s:", file_name).c_str();
   }
 #ifdef _MSC_VER
   return String::Format("%s(%d):", file_name, line).c_str();
 #else
   return String::Format("%s:%d:", file_name, line).c_str();
 #endif  // _MSC_VER
 }
 // Formats a file location for compiler-independent XML output.
 // Although this function is not platform dependent, we put it next to
 // FormatFileLocation in order to contrast the two functions.
 // Note that FormatCompilerIndependentFileLocation() does NOT append colon
 // to the file location it produces, unlike FormatFileLocation().
 GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(
     const char* file, int line) {
   const char* const file_name = file == NULL ? kUnknownFile : file;
   if (line < 0)
     return file_name;
   else
     return String::Format("%s:%d", file_name, line).c_str();
 }
 GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line)
     : severity_(severity) {
   const char* const marker =
       severity == GTEST_INFO ?    "[  INFO ]" :
       severity == GTEST_WARNING ? "[WARNING]" :
       severity == GTEST_ERROR ?   "[ ERROR ]" : "[ FATAL ]";
   GetStream() << ::std::endl << marker << " "
               << FormatFileLocation(file, line).c_str() << ": ";
 }
 // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
 GTestLog::~GTestLog() {
   GetStream() << ::std::endl;
   if (severity_ == GTEST_FATAL) {
     fflush(stderr);
     posix::Abort();
   }
 }
 // Disable Microsoft deprecation warnings for POSIX functions called from
 // this class (creat, dup, dup2, and close)
 #ifdef _MSC_VER
 # pragma warning(push)
 # pragma warning(disable: 4996)
 #endif  // _MSC_VER
 #if GTEST_HAS_STREAM_REDIRECTION
 // Object that captures an output stream (stdout/stderr).
 class CapturedStream {
  public:
   // The ctor redirects the stream to a temporary file.
   CapturedStream(int fd) : fd_(fd), uncaptured_fd_(dup(fd)) {
 # if GTEST_OS_WINDOWS
     char temp_dir_path[MAX_PATH + 1] = { '\0' };  // NOLINT
     char temp_file_path[MAX_PATH + 1] = { '\0' };  // NOLINT
     ::GetTempPathA(sizeof(temp_dir_path), temp_dir_path);
     const UINT success = ::GetTempFileNameA(temp_dir_path,
                                             "gtest_redir",
 ,  // Generate unique file name.
                                             temp_file_path);
     GTEST_CHECK_(success != 0)
         << "Unable to create a temporary file in " << temp_dir_path;
     const int captured_fd = creat(temp_file_path, _S_IREAD | _S_IWRITE);
     GTEST_CHECK_(captured_fd != -1) << "Unable to open temporary file "
                                     << temp_file_path;
     filename_ = temp_file_path;
 # else
     // There's no guarantee that a test has write access to the current
     // directory, so we create the temporary file in the /tmp directory instead.
     // We use /tmp on most systems, and /mnt/sdcard on Android. That's because
     // Android doesn't have /tmp.
 #  if GTEST_OS_LINUX_ANDROID
     char name_template[] = "/mnt/sdcard/gtest_captured_stream.XXXXXX";
 #  else
     char name_template[] = "/tmp/captured_stream.XXXXXX";
 #  endif  // GTEST_OS_LINUX_ANDROID
     const int captured_fd = mkstemp(name_template);
     filename_ = name_template;
 # endif  // GTEST_OS_WINDOWS
     fflush(NULL);
     dup2(captured_fd, fd_);
     close(captured_fd);
   }
   ~CapturedStream() {
     remove(filename_.c_str());
   }
   String GetCapturedString() {
     if (uncaptured_fd_ != -1) {
       // Restores the original stream.
       fflush(NULL);
       dup2(uncaptured_fd_, fd_);
       close(uncaptured_fd_);
       uncaptured_fd_ = -1;
     }
     FILE* const file = posix::FOpen(filename_.c_str(), "r");
     const String content = ReadEntireFile(file);
     posix::FClose(file);
     return content;
   }
  private:
   // Reads the entire content of a file as a String.
   static String ReadEntireFile(FILE* file);
   // Returns the size (in bytes) of a file.
   static size_t GetFileSize(FILE* file);
   const int fd_;  // A stream to capture.
   int uncaptured_fd_;
   // Name of the temporary file holding the stderr output.
   ::std::string filename_;
   GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream);
 };
 // Returns the size (in bytes) of a file.
 size_t CapturedStream::GetFileSize(FILE* file) {
   fseek(file, 0, SEEK_END);
   return static_cast<size_t>(ftell(file));
 }
 // Reads the entire content of a file as a string.
 String CapturedStream::ReadEntireFile(FILE* file) {
   const size_t file_size = GetFileSize(file);
   char* const buffer = new char[file_size];
   size_t bytes_last_read = 0;  // # of bytes read in the last fread()
   size_t bytes_read = 0;       // # of bytes read so far
   fseek(file, 0, SEEK_SET);
   // Keeps reading the file until we cannot read further or the
   // pre-determined file size is reached.
   do {
     bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file);
     bytes_read += bytes_last_read;
   } while (bytes_last_read > 0 && bytes_read < file_size);
   const String content(buffer, bytes_read);
   delete[] buffer;
   return content;
 }
 # ifdef _MSC_VER
 #  pragma warning(pop)
 # endif  // _MSC_VER
 static CapturedStream* g_captured_stderr = NULL;
 static CapturedStream* g_captured_stdout = NULL;
 // Starts capturing an output stream (stdout/stderr).
 void CaptureStream(int fd, const char* stream_name, CapturedStream** stream) {
   if (*stream != NULL) {
     GTEST_LOG_(FATAL) << "Only one " << stream_name
                       << " capturer can exist at a time.";
   }
   *stream = new CapturedStream(fd);
 }
 // Stops capturing the output stream and returns the captured string.
 String GetCapturedStream(CapturedStream** captured_stream) {
   const String content = (*captured_stream)->GetCapturedString();
   delete *captured_stream;
   *captured_stream = NULL;
   return content;
 }
 // Starts capturing stdout.
 void CaptureStdout() {
   CaptureStream(kStdOutFileno, "stdout", &g_captured_stdout);
 }
 // Starts capturing stderr.
 void CaptureStderr() {
   CaptureStream(kStdErrFileno, "stderr", &g_captured_stderr);
 }
 // Stops capturing stdout and returns the captured string.
 String GetCapturedStdout() { return GetCapturedStream(&g_captured_stdout); }
 // Stops capturing stderr and returns the captured string.
 String GetCapturedStderr() { return GetCapturedStream(&g_captured_stderr); }
 #endif  // GTEST_HAS_STREAM_REDIRECTION
 #if GTEST_HAS_DEATH_TEST
 // A copy of all command line arguments.  Set by InitGoogleTest().
 ::std::vector<testing::internal::string> g_argvs;
 static const ::std::vector<testing::internal::string>* g_injected_test_argvs =
                                         NULL;  // Owned.
 void SetInjectableArgvs(const ::std::vector<testing::internal::string>* argvs) {
   if (g_injected_test_argvs != argvs)
     delete g_injected_test_argvs;
   g_injected_test_argvs = argvs;
 }
 const ::std::vector<testing::internal::string>& GetInjectableArgvs() {
   if (g_injected_test_argvs != NULL) {
     return *g_injected_test_argvs;
   }
   return g_argvs;
 }
 #endif  // GTEST_HAS_DEATH_TEST
 #if GTEST_OS_WINDOWS_MOBILE
 namespace posix {
 void Abort() {
   DebugBreak();
   TerminateProcess(GetCurrentProcess(), 1);
 }
 }  // namespace posix
 #endif  // GTEST_OS_WINDOWS_MOBILE
 // Returns the name of the environment variable corresponding to the
 // given flag.  For example, FlagToEnvVar("foo") will return
 // "GTEST_FOO" in the open-source version.
 static String FlagToEnvVar(const char* flag) {
   const String full_flag =
       (Message() << GTEST_FLAG_PREFIX_ << flag).GetString();
   Message env_var;
   for (size_t i = 0; i != full_flag.length(); i++) {
     env_var << ToUpper(full_flag.c_str()[i]);
   }
   return env_var.GetString();
 }
 // Parses 'str' for a 32-bit signed integer.  If successful, writes
 // the result to *value and returns true; otherwise leaves *value
 // unchanged and returns false.
 bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
   // Parses the environment variable as a decimal integer.
   char* end = NULL;
   const long long_value = strtol(str, &end, 10);  // NOLINT
   // Has strtol() consumed all characters in the string?
   if (*end != '\0') {
     // No - an invalid character was encountered.
     Message msg;
     msg << "WARNING: " << src_text
         << " is expected to be a 32-bit integer, but actually"
         << " has value \"" << str << "\".\n";
     printf("%s", msg.GetString().c_str());
     fflush(stdout);
     return false;
   }
   // Is the parsed value in the range of an Int32?
   const Int32 result = static_cast<Int32>(long_value);
   if (long_value == LONG_MAX || long_value == LONG_MIN ||
       // The parsed value overflows as a long.  (strtol() returns
       // LONG_MAX or LONG_MIN when the input overflows.)
       result != long_value
       // The parsed value overflows as an Int32.
       ) {
     Message msg;
     msg << "WARNING: " << src_text
         << " is expected to be a 32-bit integer, but actually"
         << " has value " << str << ", which overflows.\n";
     printf("%s", msg.GetString().c_str());
     fflush(stdout);
     return false;
   }
   *value = result;
   return true;
 }
 // Reads and returns the Boolean environment variable corresponding to
 // the given flag; if it's not set, returns default_value.
 //
 // The value is considered true iff it's not "0".
 bool BoolFromGTestEnv(const char* flag, bool default_value) {
   const String env_var = FlagToEnvVar(flag);
   const char* const string_value = posix::GetEnv(env_var.c_str());
   return string_value == NULL ?
       default_value : strcmp(string_value, "0") != 0;
 }
 // Reads and returns a 32-bit integer stored in the environment
 // variable corresponding to the given flag; if it isn't set or
 // doesn't represent a valid 32-bit integer, returns default_value.
 Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
   const String env_var = FlagToEnvVar(flag);
   const char* const string_value = posix::GetEnv(env_var.c_str());
   if (string_value == NULL) {
     // The environment variable is not set.
     return default_value;
   }
   Int32 result = default_value;
   if (!ParseInt32(Message() << "Environment variable " << env_var,
                   string_value, &result)) {
     printf("The default value %s is used.\n",
            (Message() << default_value).GetString().c_str());
     fflush(stdout);
     return default_value;
   }
   return result;
 }
 // Reads and returns the string environment variable corresponding to
 // the given flag; if it's not set, returns default_value.
 const char* StringFromGTestEnv(const char* flag, const char* default_value) {
   const String env_var = FlagToEnvVar(flag);
   const char* const value = posix::GetEnv(env_var.c_str());
   return value == NULL ? default_value : value;
 }
 }  // namespace internal
 }  // namespace testing

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