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 // 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",

                                             0,  // 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