LCOV - code coverage report
Current view: top level - usr/src/gtest/src - gtest-port.cc (source / functions) Hit Total Coverage
Test: clean.info Lines: 21 155 13.5 %
Date: 2013-05-24 Functions: 4 26 15.4 %
Branches: 13 200 6.5 %

           Branch data     Line data    Source code
       1                 :            : // Copyright 2008, Google Inc.
       2                 :            : // All rights reserved.
       3                 :            : //
       4                 :            : // Redistribution and use in source and binary forms, with or without
       5                 :            : // modification, are permitted provided that the following conditions are
       6                 :            : // met:
       7                 :            : //
       8                 :            : //     * Redistributions of source code must retain the above copyright
       9                 :            : // notice, this list of conditions and the following disclaimer.
      10                 :            : //     * Redistributions in binary form must reproduce the above
      11                 :            : // copyright notice, this list of conditions and the following disclaimer
      12                 :            : // in the documentation and/or other materials provided with the
      13                 :            : // distribution.
      14                 :            : //     * Neither the name of Google Inc. nor the names of its
      15                 :            : // contributors may be used to endorse or promote products derived from
      16                 :            : // this software without specific prior written permission.
      17                 :            : //
      18                 :            : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      19                 :            : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      20                 :            : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      21                 :            : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      22                 :            : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      23                 :            : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      24                 :            : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      25                 :            : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      26                 :            : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      27                 :            : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      28                 :            : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      29                 :            : //
      30                 :            : // Author: wan@google.com (Zhanyong Wan)
      31                 :            : 
      32                 :            : #include "gtest/internal/gtest-port.h"
      33                 :            : 
      34                 :            : #include <limits.h>
      35                 :            : #include <stdlib.h>
      36                 :            : #include <stdio.h>
      37                 :            : #include <string.h>
      38                 :            : 
      39                 :            : #if GTEST_OS_WINDOWS_MOBILE
      40                 :            : # include <windows.h>  // For TerminateProcess()
      41                 :            : #elif GTEST_OS_WINDOWS
      42                 :            : # include <io.h>
      43                 :            : # include <sys/stat.h>
      44                 :            : #else
      45                 :            : # include <unistd.h>
      46                 :            : #endif  // GTEST_OS_WINDOWS_MOBILE
      47                 :            : 
      48                 :            : #if GTEST_OS_MAC
      49                 :            : # include <mach/mach_init.h>
      50                 :            : # include <mach/task.h>
      51                 :            : # include <mach/vm_map.h>
      52                 :            : #endif  // GTEST_OS_MAC
      53                 :            : 
      54                 :            : #include "gtest/gtest-spi.h"
      55                 :            : #include "gtest/gtest-message.h"
      56                 :            : #include "gtest/internal/gtest-internal.h"
      57                 :            : #include "gtest/internal/gtest-string.h"
      58                 :            : 
      59                 :            : // Indicates that this translation unit is part of Google Test's
      60                 :            : // implementation.  It must come before gtest-internal-inl.h is
      61                 :            : // included, or there will be a compiler error.  This trick is to
      62                 :            : // prevent a user from accidentally including gtest-internal-inl.h in
      63                 :            : // his code.
      64                 :            : #define GTEST_IMPLEMENTATION_ 1
      65                 :            : #include "src/gtest-internal-inl.h"
      66                 :            : #undef GTEST_IMPLEMENTATION_
      67                 :            : 
      68                 :            : namespace testing {
      69                 :            : namespace internal {
      70                 :            : 
      71                 :            : #if defined(_MSC_VER) || defined(__BORLANDC__)
      72                 :            : // MSVC and C++Builder do not provide a definition of STDERR_FILENO.
      73                 :            : const int kStdOutFileno = 1;
      74                 :            : const int kStdErrFileno = 2;
      75                 :            : #else
      76                 :            : const int kStdOutFileno = STDOUT_FILENO;
      77                 :            : const int kStdErrFileno = STDERR_FILENO;
      78                 :            : #endif  // _MSC_VER
      79                 :            : 
      80                 :            : #if GTEST_OS_MAC
      81                 :            : 
      82                 :            : // Returns the number of threads running in the process, or 0 to indicate that
      83                 :            : // we cannot detect it.
      84                 :            : size_t GetThreadCount() {
      85                 :            :   const task_t task = mach_task_self();
      86                 :            :   mach_msg_type_number_t thread_count;
      87                 :            :   thread_act_array_t thread_list;
      88                 :            :   const kern_return_t status = task_threads(task, &thread_list, &thread_count);
      89                 :            :   if (status == KERN_SUCCESS) {
      90                 :            :     // task_threads allocates resources in thread_list and we need to free them
      91                 :            :     // to avoid leaks.
      92                 :            :     vm_deallocate(task,
      93                 :            :                   reinterpret_cast<vm_address_t>(thread_list),
      94                 :            :                   sizeof(thread_t) * thread_count);
      95                 :            :     return static_cast<size_t>(thread_count);
      96                 :            :   } else {
      97                 :            :     return 0;
      98                 :            :   }
      99                 :            : }
     100                 :            : 
     101                 :            : #else
     102                 :            : 
     103                 :          0 : size_t GetThreadCount() {
     104                 :            :   // There's no portable way to detect the number of threads, so we just
     105                 :            :   // return 0 to indicate that we cannot detect it.
     106                 :          0 :   return 0;
     107                 :            : }
     108                 :            : 
     109                 :            : #endif  // GTEST_OS_MAC
     110                 :            : 
     111                 :            : #if GTEST_USES_POSIX_RE
     112                 :            : 
     113                 :            : // Implements RE.  Currently only needed for death tests.
     114                 :            : 
     115                 :          0 : RE::~RE() {
     116         [ #  # ]:          0 :   if (is_valid_) {
     117                 :            :     // regfree'ing an invalid regex might crash because the content
     118                 :            :     // of the regex is undefined. Since the regex's are essentially
     119                 :            :     // the same, one cannot be valid (or invalid) without the other
     120                 :            :     // being so too.
     121                 :          0 :     regfree(&partial_regex_);
     122                 :          0 :     regfree(&full_regex_);
     123                 :            :   }
     124                 :          0 :   free(const_cast<char*>(pattern_));
     125                 :          0 : }
     126                 :            : 
     127                 :            : // Returns true iff regular expression re matches the entire str.
     128                 :          0 : bool RE::FullMatch(const char* str, const RE& re) {
     129         [ #  # ]:          0 :   if (!re.is_valid_) return false;
     130                 :            : 
     131                 :            :   regmatch_t match;
     132                 :          0 :   return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
     133                 :            : }
     134                 :            : 
     135                 :            : // Returns true iff regular expression re matches a substring of str
     136                 :            : // (including str itself).
     137                 :          0 : bool RE::PartialMatch(const char* str, const RE& re) {
     138         [ #  # ]:          0 :   if (!re.is_valid_) return false;
     139                 :            : 
     140                 :            :   regmatch_t match;
     141                 :          0 :   return regexec(&re.partial_regex_, str, 1, &match, 0) == 0;
     142                 :            : }
     143                 :            : 
     144                 :            : // Initializes an RE from its string representation.
     145                 :          0 : void RE::Init(const char* regex) {
     146                 :          0 :   pattern_ = posix::StrDup(regex);
     147                 :            : 
     148                 :            :   // Reserves enough bytes to hold the regular expression used for a
     149                 :            :   // full match.
     150                 :          0 :   const size_t full_regex_len = strlen(regex) + 10;
     151                 :          0 :   char* const full_pattern = new char[full_regex_len];
     152                 :            : 
     153                 :          0 :   snprintf(full_pattern, full_regex_len, "^(%s)$", regex);
     154                 :          0 :   is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0;
     155                 :            :   // We want to call regcomp(&partial_regex_, ...) even if the
     156                 :            :   // previous expression returns false.  Otherwise partial_regex_ may
     157                 :            :   // not be properly initialized can may cause trouble when it's
     158                 :            :   // freed.
     159                 :            :   //
     160                 :            :   // Some implementation of POSIX regex (e.g. on at least some
     161                 :            :   // versions of Cygwin) doesn't accept the empty string as a valid
     162                 :            :   // regex.  We change it to an equivalent form "()" to be safe.
     163         [ #  # ]:          0 :   if (is_valid_) {
     164         [ #  # ]:          0 :     const char* const partial_regex = (*regex == '\0') ? "()" : regex;
     165                 :          0 :     is_valid_ = regcomp(&partial_regex_, partial_regex, REG_EXTENDED) == 0;
     166                 :            :   }
     167         [ #  # ]:          0 :   EXPECT_TRUE(is_valid_)
     168 [ #  # ][ #  # ]:          0 :       << "Regular expression \"" << regex
           [ #  #  #  # ]
     169 [ #  # ][ #  # ]:          0 :       << "\" is not a valid POSIX Extended regular expression.";
         [ #  # ][ #  # ]
     170                 :            : 
     171         [ #  # ]:          0 :   delete[] full_pattern;
     172                 :          0 : }
     173                 :            : 
     174                 :            : #elif GTEST_USES_SIMPLE_RE
     175                 :            : 
     176                 :            : // Returns true iff ch appears anywhere in str (excluding the
     177                 :            : // terminating '\0' character).
     178                 :            : bool IsInSet(char ch, const char* str) {
     179                 :            :   return ch != '\0' && strchr(str, ch) != NULL;
     180                 :            : }
     181                 :            : 
     182                 :            : // Returns true iff ch belongs to the given classification.  Unlike
     183                 :            : // similar functions in <ctype.h>, these aren't affected by the
     184                 :            : // current locale.
     185                 :            : bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
     186                 :            : bool IsAsciiPunct(char ch) {
     187                 :            :   return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
     188                 :            : }
     189                 :            : bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
     190                 :            : bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
     191                 :            : bool IsAsciiWordChar(char ch) {
     192                 :            :   return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') ||
     193                 :            :       ('0' <= ch && ch <= '9') || ch == '_';
     194                 :            : }
     195                 :            : 
     196                 :            : // Returns true iff "\\c" is a supported escape sequence.
     197                 :            : bool IsValidEscape(char c) {
     198                 :            :   return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
     199                 :            : }
     200                 :            : 
     201                 :            : // Returns true iff the given atom (specified by escaped and pattern)
     202                 :            : // matches ch.  The result is undefined if the atom is invalid.
     203                 :            : bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
     204                 :            :   if (escaped) {  // "\\p" where p is pattern_char.
     205                 :            :     switch (pattern_char) {
     206                 :            :       case 'd': return IsAsciiDigit(ch);
     207                 :            :       case 'D': return !IsAsciiDigit(ch);
     208                 :            :       case 'f': return ch == '\f';
     209                 :            :       case 'n': return ch == '\n';
     210                 :            :       case 'r': return ch == '\r';
     211                 :            :       case 's': return IsAsciiWhiteSpace(ch);
     212                 :            :       case 'S': return !IsAsciiWhiteSpace(ch);
     213                 :            :       case 't': return ch == '\t';
     214                 :            :       case 'v': return ch == '\v';
     215                 :            :       case 'w': return IsAsciiWordChar(ch);
     216                 :            :       case 'W': return !IsAsciiWordChar(ch);
     217                 :            :     }
     218                 :            :     return IsAsciiPunct(pattern_char) && pattern_char == ch;
     219                 :            :   }
     220                 :            : 
     221                 :            :   return (pattern_char == '.' && ch != '\n') || pattern_char == ch;
     222                 :            : }
     223                 :            : 
     224                 :            : // Helper function used by ValidateRegex() to format error messages.
     225                 :            : String FormatRegexSyntaxError(const char* regex, int index) {
     226                 :            :   return (Message() << "Syntax error at index " << index
     227                 :            :           << " in simple regular expression \"" << regex << "\": ").GetString();
     228                 :            : }
     229                 :            : 
     230                 :            : // Generates non-fatal failures and returns false if regex is invalid;
     231                 :            : // otherwise returns true.
     232                 :            : bool ValidateRegex(const char* regex) {
     233                 :            :   if (regex == NULL) {
     234                 :            :     // TODO(wan@google.com): fix the source file location in the
     235                 :            :     // assertion failures to match where the regex is used in user
     236                 :            :     // code.
     237                 :            :     ADD_FAILURE() << "NULL is not a valid simple regular expression.";
     238                 :            :     return false;
     239                 :            :   }
     240                 :            : 
     241                 :            :   bool is_valid = true;
     242                 :            : 
     243                 :            :   // True iff ?, *, or + can follow the previous atom.
     244                 :            :   bool prev_repeatable = false;
     245                 :            :   for (int i = 0; regex[i]; i++) {
     246                 :            :     if (regex[i] == '\\') {  // An escape sequence
     247                 :            :       i++;
     248                 :            :       if (regex[i] == '\0') {
     249                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
     250                 :            :                       << "'\\' cannot appear at the end.";
     251                 :            :         return false;
     252                 :            :       }
     253                 :            : 
     254                 :            :       if (!IsValidEscape(regex[i])) {
     255                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
     256                 :            :                       << "invalid escape sequence \"\\" << regex[i] << "\".";
     257                 :            :         is_valid = false;
     258                 :            :       }
     259                 :            :       prev_repeatable = true;
     260                 :            :     } else {  // Not an escape sequence.
     261                 :            :       const char ch = regex[i];
     262                 :            : 
     263                 :            :       if (ch == '^' && i > 0) {
     264                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
     265                 :            :                       << "'^' can only appear at the beginning.";
     266                 :            :         is_valid = false;
     267                 :            :       } else if (ch == '$' && regex[i + 1] != '\0') {
     268                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
     269                 :            :                       << "'$' can only appear at the end.";
     270                 :            :         is_valid = false;
     271                 :            :       } else if (IsInSet(ch, "()[]{}|")) {
     272                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
     273                 :            :                       << "'" << ch << "' is unsupported.";
     274                 :            :         is_valid = false;
     275                 :            :       } else if (IsRepeat(ch) && !prev_repeatable) {
     276                 :            :         ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
     277                 :            :                       << "'" << ch << "' can only follow a repeatable token.";
     278                 :            :         is_valid = false;
     279                 :            :       }
     280                 :            : 
     281                 :            :       prev_repeatable = !IsInSet(ch, "^$?*+");
     282                 :            :     }
     283                 :            :   }
     284                 :            : 
     285                 :            :   return is_valid;
     286                 :            : }
     287                 :            : 
     288                 :            : // Matches a repeated regex atom followed by a valid simple regular
     289                 :            : // expression.  The regex atom is defined as c if escaped is false,
     290                 :            : // or \c otherwise.  repeat is the repetition meta character (?, *,
     291                 :            : // or +).  The behavior is undefined if str contains too many
     292                 :            : // characters to be indexable by size_t, in which case the test will
     293                 :            : // probably time out anyway.  We are fine with this limitation as
     294                 :            : // std::string has it too.
     295                 :            : bool MatchRepetitionAndRegexAtHead(
     296                 :            :     bool escaped, char c, char repeat, const char* regex,
     297                 :            :     const char* str) {
     298                 :            :   const size_t min_count = (repeat == '+') ? 1 : 0;
     299                 :            :   const size_t max_count = (repeat == '?') ? 1 :
     300                 :            :       static_cast<size_t>(-1) - 1;
     301                 :            :   // We cannot call numeric_limits::max() as it conflicts with the
     302                 :            :   // max() macro on Windows.
     303                 :            : 
     304                 :            :   for (size_t i = 0; i <= max_count; ++i) {
     305                 :            :     // We know that the atom matches each of the first i characters in str.
     306                 :            :     if (i >= min_count && MatchRegexAtHead(regex, str + i)) {
     307                 :            :       // We have enough matches at the head, and the tail matches too.
     308                 :            :       // Since we only care about *whether* the pattern matches str
     309                 :            :       // (as opposed to *how* it matches), there is no need to find a
     310                 :            :       // greedy match.
     311                 :            :       return true;
     312                 :            :     }
     313                 :            :     if (str[i] == '\0' || !AtomMatchesChar(escaped, c, str[i]))
     314                 :            :       return false;
     315                 :            :   }
     316                 :            :   return false;
     317                 :            : }
     318                 :            : 
     319                 :            : // Returns true iff regex matches a prefix of str.  regex must be a
     320                 :            : // valid simple regular expression and not start with "^", or the
     321                 :            : // result is undefined.
     322                 :            : bool MatchRegexAtHead(const char* regex, const char* str) {
     323                 :            :   if (*regex == '\0')  // An empty regex matches a prefix of anything.
     324                 :            :     return true;
     325                 :            : 
     326                 :            :   // "$" only matches the end of a string.  Note that regex being
     327                 :            :   // valid guarantees that there's nothing after "$" in it.
     328                 :            :   if (*regex == '$')
     329                 :            :     return *str == '\0';
     330                 :            : 
     331                 :            :   // Is the first thing in regex an escape sequence?
     332                 :            :   const bool escaped = *regex == '\\';
     333                 :            :   if (escaped)
     334                 :            :     ++regex;
     335                 :            :   if (IsRepeat(regex[1])) {
     336                 :            :     // MatchRepetitionAndRegexAtHead() calls MatchRegexAtHead(), so
     337                 :            :     // here's an indirect recursion.  It terminates as the regex gets
     338                 :            :     // shorter in each recursion.
     339                 :            :     return MatchRepetitionAndRegexAtHead(
     340                 :            :         escaped, regex[0], regex[1], regex + 2, str);
     341                 :            :   } else {
     342                 :            :     // regex isn't empty, isn't "$", and doesn't start with a
     343                 :            :     // repetition.  We match the first atom of regex with the first
     344                 :            :     // character of str and recurse.
     345                 :            :     return (*str != '\0') && AtomMatchesChar(escaped, *regex, *str) &&
     346                 :            :         MatchRegexAtHead(regex + 1, str + 1);
     347                 :            :   }
     348                 :            : }
     349                 :            : 
     350                 :            : // Returns true iff regex matches any substring of str.  regex must be
     351                 :            : // a valid simple regular expression, or the result is undefined.
     352                 :            : //
     353                 :            : // The algorithm is recursive, but the recursion depth doesn't exceed
     354                 :            : // the regex length, so we won't need to worry about running out of
     355                 :            : // stack space normally.  In rare cases the time complexity can be
     356                 :            : // exponential with respect to the regex length + the string length,
     357                 :            : // but usually it's must faster (often close to linear).
     358                 :            : bool MatchRegexAnywhere(const char* regex, const char* str) {
     359                 :            :   if (regex == NULL || str == NULL)
     360                 :            :     return false;
     361                 :            : 
     362                 :            :   if (*regex == '^')
     363                 :            :     return MatchRegexAtHead(regex + 1, str);
     364                 :            : 
     365                 :            :   // A successful match can be anywhere in str.
     366                 :            :   do {
     367                 :            :     if (MatchRegexAtHead(regex, str))
     368                 :            :       return true;
     369                 :            :   } while (*str++ != '\0');
     370                 :            :   return false;
     371                 :            : }
     372                 :            : 
     373                 :            : // Implements the RE class.
     374                 :            : 
     375                 :            : RE::~RE() {
     376                 :            :   free(const_cast<char*>(pattern_));
     377                 :            :   free(const_cast<char*>(full_pattern_));
     378                 :            : }
     379                 :            : 
     380                 :            : // Returns true iff regular expression re matches the entire str.
     381                 :            : bool RE::FullMatch(const char* str, const RE& re) {
     382                 :            :   return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str);
     383                 :            : }
     384                 :            : 
     385                 :            : // Returns true iff regular expression re matches a substring of str
     386                 :            : // (including str itself).
     387                 :            : bool RE::PartialMatch(const char* str, const RE& re) {
     388                 :            :   return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str);
     389                 :            : }
     390                 :            : 
     391                 :            : // Initializes an RE from its string representation.
     392                 :            : void RE::Init(const char* regex) {
     393                 :            :   pattern_ = full_pattern_ = NULL;
     394                 :            :   if (regex != NULL) {
     395                 :            :     pattern_ = posix::StrDup(regex);
     396                 :            :   }
     397                 :            : 
     398                 :            :   is_valid_ = ValidateRegex(regex);
     399                 :            :   if (!is_valid_) {
     400                 :            :     // No need to calculate the full pattern when the regex is invalid.
     401                 :            :     return;
     402                 :            :   }
     403                 :            : 
     404                 :            :   const size_t len = strlen(regex);
     405                 :            :   // Reserves enough bytes to hold the regular expression used for a
     406                 :            :   // full match: we need space to prepend a '^', append a '$', and
     407                 :            :   // terminate the string with '\0'.
     408                 :            :   char* buffer = static_cast<char*>(malloc(len + 3));
     409                 :            :   full_pattern_ = buffer;
     410                 :            : 
     411                 :            :   if (*regex != '^')
     412                 :            :     *buffer++ = '^';  // Makes sure full_pattern_ starts with '^'.
     413                 :            : 
     414                 :            :   // We don't use snprintf or strncpy, as they trigger a warning when
     415                 :            :   // compiled with VC++ 8.0.
     416                 :            :   memcpy(buffer, regex, len);
     417                 :            :   buffer += len;
     418                 :            : 
     419                 :            :   if (len == 0 || regex[len - 1] != '$')
     420                 :            :     *buffer++ = '$';  // Makes sure full_pattern_ ends with '$'.
     421                 :            : 
     422                 :            :   *buffer = '\0';
     423                 :            : }
     424                 :            : 
     425                 :            : #endif  // GTEST_USES_POSIX_RE
     426                 :            : 
     427                 :            : const char kUnknownFile[] = "unknown file";
     428                 :            : 
     429                 :            : // Formats a source file path and a line number as they would appear
     430                 :            : // in an error message from the compiler used to compile this code.
     431                 :          0 : GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
     432         [ #  # ]:          0 :   const char* const file_name = file == NULL ? kUnknownFile : file;
     433                 :            : 
     434         [ #  # ]:          0 :   if (line < 0) {
     435 [ #  # ][ #  # ]:          0 :     return String::Format("%s:", file_name).c_str();
     436                 :            :   }
     437                 :            : #ifdef _MSC_VER
     438                 :            :   return String::Format("%s(%d):", file_name, line).c_str();
     439                 :            : #else
     440 [ #  # ][ #  # ]:          0 :   return String::Format("%s:%d:", file_name, line).c_str();
     441                 :            : #endif  // _MSC_VER
     442                 :            : }
     443                 :            : 
     444                 :            : // Formats a file location for compiler-independent XML output.
     445                 :            : // Although this function is not platform dependent, we put it next to
     446                 :            : // FormatFileLocation in order to contrast the two functions.
     447                 :            : // Note that FormatCompilerIndependentFileLocation() does NOT append colon
     448                 :            : // to the file location it produces, unlike FormatFileLocation().
     449                 :          0 : GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(
     450                 :            :     const char* file, int line) {
     451         [ #  # ]:          0 :   const char* const file_name = file == NULL ? kUnknownFile : file;
     452                 :            : 
     453         [ #  # ]:          0 :   if (line < 0)
     454         [ #  # ]:          0 :     return file_name;
     455                 :            :   else
     456 [ #  # ][ #  # ]:          0 :     return String::Format("%s:%d", file_name, line).c_str();
     457                 :            : }
     458                 :            : 
     459                 :            : 
     460                 :          0 : GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line)
     461                 :          0 :     : severity_(severity) {
     462                 :            :   const char* const marker =
     463                 :            :       severity == GTEST_INFO ?    "[  INFO ]" :
     464                 :            :       severity == GTEST_WARNING ? "[WARNING]" :
     465 [ #  # ][ #  # ]:          0 :       severity == GTEST_ERROR ?   "[ ERROR ]" : "[ FATAL ]";
                 [ #  # ]
     466 [ #  # ][ #  # ]:          0 :   GetStream() << ::std::endl << marker << " "
                 [ #  # ]
     467 [ #  # ][ #  # ]:          0 :               << FormatFileLocation(file, line).c_str() << ": ";
                 [ #  # ]
     468                 :          0 : }
     469                 :            : 
     470                 :            : // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
     471                 :          0 : GTestLog::~GTestLog() {
     472                 :          0 :   GetStream() << ::std::endl;
     473         [ #  # ]:          0 :   if (severity_ == GTEST_FATAL) {
     474                 :          0 :     fflush(stderr);
     475                 :          0 :     posix::Abort();
     476                 :            :   }
     477                 :          0 : }
     478                 :            : // Disable Microsoft deprecation warnings for POSIX functions called from
     479                 :            : // this class (creat, dup, dup2, and close)
     480                 :            : #ifdef _MSC_VER
     481                 :            : # pragma warning(push)
     482                 :            : # pragma warning(disable: 4996)
     483                 :            : #endif  // _MSC_VER
     484                 :            : 
     485                 :            : #if GTEST_HAS_STREAM_REDIRECTION
     486                 :            : 
     487                 :            : // Object that captures an output stream (stdout/stderr).
     488                 :            : class CapturedStream {
     489                 :            :  public:
     490                 :            :   // The ctor redirects the stream to a temporary file.
     491                 :          0 :   CapturedStream(int fd) : fd_(fd), uncaptured_fd_(dup(fd)) {
     492                 :            : 
     493                 :            : # if GTEST_OS_WINDOWS
     494                 :            :     char temp_dir_path[MAX_PATH + 1] = { '\0' };  // NOLINT
     495                 :            :     char temp_file_path[MAX_PATH + 1] = { '\0' };  // NOLINT
     496                 :            : 
     497                 :            :     ::GetTempPathA(sizeof(temp_dir_path), temp_dir_path);
     498                 :            :     const UINT success = ::GetTempFileNameA(temp_dir_path,
     499                 :            :                                             "gtest_redir",
     500                 :            :                                             0,  // Generate unique file name.
     501                 :            :                                             temp_file_path);
     502                 :            :     GTEST_CHECK_(success != 0)
     503                 :            :         << "Unable to create a temporary file in " << temp_dir_path;
     504                 :            :     const int captured_fd = creat(temp_file_path, _S_IREAD | _S_IWRITE);
     505                 :            :     GTEST_CHECK_(captured_fd != -1) << "Unable to open temporary file "
     506                 :            :                                     << temp_file_path;
     507                 :            :     filename_ = temp_file_path;
     508                 :            : # else
     509                 :            :     // There's no guarantee that a test has write access to the
     510                 :            :     // current directory, so we create the temporary file in the /tmp
     511                 :            :     // directory instead.
     512                 :          0 :     char name_template[] = "/tmp/captured_stream.XXXXXX";
     513         [ #  # ]:          0 :     const int captured_fd = mkstemp(name_template);
     514         [ #  # ]:          0 :     filename_ = name_template;
     515                 :            : # endif  // GTEST_OS_WINDOWS
     516         [ #  # ]:          0 :     fflush(NULL);
     517                 :          0 :     dup2(captured_fd, fd_);
     518         [ #  # ]:          0 :     close(captured_fd);
     519                 :          0 :   }
     520                 :            : 
     521                 :          0 :   ~CapturedStream() {
     522         [ #  # ]:          0 :     remove(filename_.c_str());
     523                 :          0 :   }
     524                 :            : 
     525                 :          0 :   String GetCapturedString() {
     526         [ #  # ]:          0 :     if (uncaptured_fd_ != -1) {
     527                 :            :       // Restores the original stream.
     528                 :          0 :       fflush(NULL);
     529                 :          0 :       dup2(uncaptured_fd_, fd_);
     530                 :          0 :       close(uncaptured_fd_);
     531                 :          0 :       uncaptured_fd_ = -1;
     532                 :            :     }
     533                 :            : 
     534                 :          0 :     FILE* const file = posix::FOpen(filename_.c_str(), "r");
     535                 :          0 :     const String content = ReadEntireFile(file);
     536         [ #  # ]:          0 :     posix::FClose(file);
     537                 :          0 :     return content;
     538                 :            :   }
     539                 :            : 
     540                 :            :  private:
     541                 :            :   // Reads the entire content of a file as a String.
     542                 :            :   static String ReadEntireFile(FILE* file);
     543                 :            : 
     544                 :            :   // Returns the size (in bytes) of a file.
     545                 :            :   static size_t GetFileSize(FILE* file);
     546                 :            : 
     547                 :            :   const int fd_;  // A stream to capture.
     548                 :            :   int uncaptured_fd_;
     549                 :            :   // Name of the temporary file holding the stderr output.
     550                 :            :   ::std::string filename_;
     551                 :            : 
     552                 :            :   GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream);
     553                 :            : };
     554                 :            : 
     555                 :            : // Returns the size (in bytes) of a file.
     556                 :          0 : size_t CapturedStream::GetFileSize(FILE* file) {
     557                 :          0 :   fseek(file, 0, SEEK_END);
     558                 :          0 :   return static_cast<size_t>(ftell(file));
     559                 :            : }
     560                 :            : 
     561                 :            : // Reads the entire content of a file as a string.
     562                 :          0 : String CapturedStream::ReadEntireFile(FILE* file) {
     563                 :          0 :   const size_t file_size = GetFileSize(file);
     564                 :          0 :   char* const buffer = new char[file_size];
     565                 :            : 
     566                 :          0 :   size_t bytes_last_read = 0;  // # of bytes read in the last fread()
     567                 :          0 :   size_t bytes_read = 0;       // # of bytes read so far
     568                 :            : 
     569                 :          0 :   fseek(file, 0, SEEK_SET);
     570                 :            : 
     571                 :            :   // Keeps reading the file until we cannot read further or the
     572                 :            :   // pre-determined file size is reached.
     573 [ #  # ][ #  # ]:          0 :   do {
                 [ #  # ]
     574                 :          0 :     bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file);
     575                 :          0 :     bytes_read += bytes_last_read;
     576                 :            :   } while (bytes_last_read > 0 && bytes_read < file_size);
     577                 :            : 
     578                 :          0 :   const String content(buffer, bytes_read);
     579         [ #  # ]:          0 :   delete[] buffer;
     580                 :            : 
     581                 :          0 :   return content;
     582                 :            : }
     583                 :            : 
     584                 :            : # ifdef _MSC_VER
     585                 :            : #  pragma warning(pop)
     586                 :            : # endif  // _MSC_VER
     587                 :            : 
     588                 :            : static CapturedStream* g_captured_stderr = NULL;
     589                 :            : static CapturedStream* g_captured_stdout = NULL;
     590                 :            : 
     591                 :            : // Starts capturing an output stream (stdout/stderr).
     592                 :          0 : void CaptureStream(int fd, const char* stream_name, CapturedStream** stream) {
     593         [ #  # ]:          0 :   if (*stream != NULL) {
     594 [ #  # ][ #  # ]:          0 :     GTEST_LOG_(FATAL) << "Only one " << stream_name
     595         [ #  # ]:          0 :                       << " capturer can exist at a time.";
     596                 :            :   }
     597         [ #  # ]:          0 :   *stream = new CapturedStream(fd);
     598                 :          0 : }
     599                 :            : 
     600                 :            : // Stops capturing the output stream and returns the captured string.
     601                 :          0 : String GetCapturedStream(CapturedStream** captured_stream) {
     602                 :          0 :   const String content = (*captured_stream)->GetCapturedString();
     603                 :            : 
     604 [ #  # ][ #  # ]:          0 :   delete *captured_stream;
     605                 :          0 :   *captured_stream = NULL;
     606                 :            : 
     607                 :          0 :   return content;
     608                 :            : }
     609                 :            : 
     610                 :            : // Starts capturing stdout.
     611                 :          0 : void CaptureStdout() {
     612                 :          0 :   CaptureStream(kStdOutFileno, "stdout", &g_captured_stdout);
     613                 :          0 : }
     614                 :            : 
     615                 :            : // Starts capturing stderr.
     616                 :          0 : void CaptureStderr() {
     617                 :          0 :   CaptureStream(kStdErrFileno, "stderr", &g_captured_stderr);
     618                 :          0 : }
     619                 :            : 
     620                 :            : // Stops capturing stdout and returns the captured string.
     621                 :          0 : String GetCapturedStdout() { return GetCapturedStream(&g_captured_stdout); }
     622                 :            : 
     623                 :            : // Stops capturing stderr and returns the captured string.
     624                 :          0 : String GetCapturedStderr() { return GetCapturedStream(&g_captured_stderr); }
     625                 :            : 
     626                 :            : #endif  // GTEST_HAS_STREAM_REDIRECTION
     627                 :            : 
     628                 :            : #if GTEST_HAS_DEATH_TEST
     629                 :            : 
     630                 :            : // A copy of all command line arguments.  Set by InitGoogleTest().
     631                 :          4 : ::std::vector<String> g_argvs;
     632                 :            : 
     633                 :            : // Returns the command line as a vector of strings.
     634                 :          0 : const ::std::vector<String>& GetArgvs() { return g_argvs; }
     635                 :            : 
     636                 :            : #endif  // GTEST_HAS_DEATH_TEST
     637                 :            : 
     638                 :            : #if GTEST_OS_WINDOWS_MOBILE
     639                 :            : namespace posix {
     640                 :            : void Abort() {
     641                 :            :   DebugBreak();
     642                 :            :   TerminateProcess(GetCurrentProcess(), 1);
     643                 :            : }
     644                 :            : }  // namespace posix
     645                 :            : #endif  // GTEST_OS_WINDOWS_MOBILE
     646                 :            : 
     647                 :            : // Returns the name of the environment variable corresponding to the
     648                 :            : // given flag.  For example, FlagToEnvVar("foo") will return
     649                 :            : // "GTEST_FOO" in the open-source version.
     650                 :         60 : static String FlagToEnvVar(const char* flag) {
     651                 :            :   const String full_flag =
     652 [ +  - ][ +  - ]:         60 :       (Message() << GTEST_FLAG_PREFIX_ << flag).GetString();
         [ +  - ][ +  - ]
     653                 :            : 
     654         [ +  - ]:         60 :   Message env_var;
     655         [ +  + ]:       1180 :   for (size_t i = 0; i != full_flag.length(); i++) {
     656         [ +  - ]:       1120 :     env_var << ToUpper(full_flag.c_str()[i]);
     657                 :            :   }
     658                 :            : 
     659 [ +  - ][ +  - ]:         60 :   return env_var.GetString();
     660                 :            : }
     661                 :            : 
     662                 :            : // Parses 'str' for a 32-bit signed integer.  If successful, writes
     663                 :            : // the result to *value and returns true; otherwise leaves *value
     664                 :            : // unchanged and returns false.
     665                 :          0 : bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
     666                 :            :   // Parses the environment variable as a decimal integer.
     667                 :          0 :   char* end = NULL;
     668                 :          0 :   const long long_value = strtol(str, &end, 10);  // NOLINT
     669                 :            : 
     670                 :            :   // Has strtol() consumed all characters in the string?
     671         [ #  # ]:          0 :   if (*end != '\0') {
     672                 :            :     // No - an invalid character was encountered.
     673                 :          0 :     Message msg;
     674 [ #  # ][ #  # ]:          0 :     msg << "WARNING: " << src_text
     675         [ #  # ]:          0 :         << " is expected to be a 32-bit integer, but actually"
     676 [ #  # ][ #  # ]:          0 :         << " has value \"" << str << "\".\n";
                 [ #  # ]
     677 [ #  # ][ #  # ]:          0 :     printf("%s", msg.GetString().c_str());
     678         [ #  # ]:          0 :     fflush(stdout);
     679                 :          0 :     return false;
     680                 :            :   }
     681                 :            : 
     682                 :            :   // Is the parsed value in the range of an Int32?
     683                 :          0 :   const Int32 result = static_cast<Int32>(long_value);
     684 [ #  # ][ #  # ]:          0 :   if (long_value == LONG_MAX || long_value == LONG_MIN ||
                 [ #  # ]
     685                 :            :       // The parsed value overflows as a long.  (strtol() returns
     686                 :            :       // LONG_MAX or LONG_MIN when the input overflows.)
     687                 :            :       result != long_value
     688                 :            :       // The parsed value overflows as an Int32.
     689                 :            :       ) {
     690                 :          0 :     Message msg;
     691 [ #  # ][ #  # ]:          0 :     msg << "WARNING: " << src_text
     692         [ #  # ]:          0 :         << " is expected to be a 32-bit integer, but actually"
     693 [ #  # ][ #  # ]:          0 :         << " has value " << str << ", which overflows.\n";
                 [ #  # ]
     694 [ #  # ][ #  # ]:          0 :     printf("%s", msg.GetString().c_str());
     695         [ #  # ]:          0 :     fflush(stdout);
     696                 :          0 :     return false;
     697                 :            :   }
     698                 :            : 
     699                 :          0 :   *value = result;
     700                 :          0 :   return true;
     701                 :            : }
     702                 :            : 
     703                 :            : // Reads and returns the Boolean environment variable corresponding to
     704                 :            : // the given flag; if it's not set, returns default_value.
     705                 :            : //
     706                 :            : // The value is considered true iff it's not "0".
     707                 :         28 : bool BoolFromGTestEnv(const char* flag, bool default_value) {
     708                 :         28 :   const String env_var = FlagToEnvVar(flag);
     709                 :         28 :   const char* const string_value = posix::GetEnv(env_var.c_str());
     710                 :            :   return string_value == NULL ?
     711         [ -  + ]:         28 :       default_value : strcmp(string_value, "0") != 0;
     712                 :            : }
     713                 :            : 
     714                 :            : // Reads and returns a 32-bit integer stored in the environment
     715                 :            : // variable corresponding to the given flag; if it isn't set or
     716                 :            : // doesn't represent a valid 32-bit integer, returns default_value.
     717                 :         12 : Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
     718                 :         12 :   const String env_var = FlagToEnvVar(flag);
     719                 :         12 :   const char* const string_value = posix::GetEnv(env_var.c_str());
     720         [ +  - ]:         12 :   if (string_value == NULL) {
     721                 :            :     // The environment variable is not set.
     722                 :         12 :     return default_value;
     723                 :            :   }
     724                 :            : 
     725                 :          0 :   Int32 result = default_value;
     726 [ #  # ][ #  # ]:          0 :   if (!ParseInt32(Message() << "Environment variable " << env_var,
         [ #  # ][ #  # ]
                 [ #  # ]
     727         [ #  # ]:          0 :                   string_value, &result)) {
     728                 :            :     printf("The default value %s is used.\n",
     729 [ #  # ][ #  # ]:          0 :            (Message() << default_value).GetString().c_str());
         [ #  # ][ #  # ]
                 [ #  # ]
     730         [ #  # ]:          0 :     fflush(stdout);
     731                 :          0 :     return default_value;
     732                 :            :   }
     733                 :            : 
     734                 :         12 :   return result;
     735                 :            : }
     736                 :            : 
     737                 :            : // Reads and returns the string environment variable corresponding to
     738                 :            : // the given flag; if it's not set, returns default_value.
     739                 :         20 : const char* StringFromGTestEnv(const char* flag, const char* default_value) {
     740                 :         20 :   const String env_var = FlagToEnvVar(flag);
     741                 :         20 :   const char* const value = posix::GetEnv(env_var.c_str());
     742         [ +  - ]:         20 :   return value == NULL ? default_value : value;
     743                 :            : }
     744                 :            : 
     745                 :            : }  // namespace internal
     746                 :            : }  // namespace testing

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