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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>
-#ifdef GTEST_HAS_DEATH_TEST
-#include <regex.h>
-#endif // GTEST_HAS_DEATH_TEST
-#include <stdlib.h>
-#include <stdio.h>
-
-#include <gtest/gtest-spi.h>
-#include <gtest/gtest-message.h>
-#include <gtest/internal/gtest-string.h>
-
-namespace testing {
-namespace internal {
-
-#ifdef GTEST_HAS_DEATH_TEST
-
-// Implements RE. Currently only needed for death tests.
-
-RE::~RE() {
- regfree(&regex_);
- free(const_cast<char*>(pattern_));
-}
-
-// Returns true iff str contains regular expression re.
-bool RE::PartialMatch(const char* str, const RE& re) {
- if (!re.is_valid_) return false;
-
- regmatch_t match;
- return regexec(&re.regex_, str, 1, &match, 0) == 0;
-}
-
-// Initializes an RE from its string representation.
-void RE::Init(const char* regex) {
- pattern_ = strdup(regex);
- is_valid_ = regcomp(&regex_, regex, REG_EXTENDED) == 0;
- EXPECT_TRUE(is_valid_)
- << "Regular expression \"" << regex
- << "\" is not a valid POSIX Extended regular expression.";
-}
-
-#endif // GTEST_HAS_DEATH_TEST
-
-// Logs a message at the given severity level.
-void GTestLog(GTestLogSeverity severity, const char* file,
- int line, const char* msg) {
- const char* const marker =
- severity == GTEST_INFO ? "[ INFO ]" :
- severity == GTEST_WARNING ? "[WARNING]" :
- severity == GTEST_ERROR ? "[ ERROR ]" : "[ FATAL ]";
- fprintf(stderr, "\n%s %s:%d: %s\n", marker, file, line, msg);
- if (severity == GTEST_FATAL) {
- abort();
- }
-}
-
-#ifdef GTEST_HAS_DEATH_TEST
-
-// Defines the stderr capturer.
-
-class CapturedStderr {
- public:
- // The ctor redirects stderr to a temporary file.
- CapturedStderr() {
- uncaptured_fd_ = dup(STDERR_FILENO);
-
- char name_template[] = "captured_stderr.XXXXXX";
- const int captured_fd = mkstemp(name_template);
- filename_ = name_template;
- fflush(NULL);
- dup2(captured_fd, STDERR_FILENO);
- close(captured_fd);
- }
-
- ~CapturedStderr() {
- remove(filename_.c_str());
- }
-
- // Stops redirecting stderr.
- void StopCapture() {
- // Restores the original stream.
- fflush(NULL);
- dup2(uncaptured_fd_, STDERR_FILENO);
- close(uncaptured_fd_);
- uncaptured_fd_ = -1;
- }
-
- // Returns the name of the temporary file holding the stderr output.
- // GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we
- // can use it here.
- ::std::string filename() const { return filename_; }
-
- private:
- int uncaptured_fd_;
- ::std::string filename_;
-};
-
-static CapturedStderr* g_captured_stderr = NULL;
-
-// Returns the size (in bytes) of a file.
-static size_t 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.
-// GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can
-// use it here.
-static ::std::string 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 ::std::string content(buffer, buffer+bytes_read);
- delete[] buffer;
-
- return content;
-}
-
-// Starts capturing stderr.
-void CaptureStderr() {
- if (g_captured_stderr != NULL) {
- GTEST_LOG(FATAL, "Only one stderr capturer can exist at one time.");
- }
- g_captured_stderr = new CapturedStderr;
-}
-
-// Stops capturing stderr and returns the captured string.
-// GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can
-// use it here.
-::std::string GetCapturedStderr() {
- g_captured_stderr->StopCapture();
- FILE* const file = fopen(g_captured_stderr->filename().c_str(), "r");
- const ::std::string content = ReadEntireFile(file);
- fclose(file);
-
- delete g_captured_stderr;
- g_captured_stderr = NULL;
-
- return content;
-}
-
-// A copy of all command line arguments. Set by ParseGTestFlags().
-::std::vector<String> g_argvs;
-
-// Returns the command line as a vector of strings.
-const ::std::vector<String>& GetArgvs() { return g_argvs; }
-
-#endif // GTEST_HAS_DEATH_TEST
-
-// 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 (int i = 0; i != full_flag.GetLength(); i++) {
- env_var << static_cast<char>(toupper(full_flag.c_str()[i]));
- }
-
- return env_var.GetString();
-}
-
-// 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 = GetEnv(env_var.c_str());
- return string_value == NULL ?
- default_value : strcmp(string_value, "0") != 0;
-}
-
-// 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 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 = 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 = GetEnv(env_var.c_str());
- return value == NULL ? default_value : value;
-}
-
-} // namespace internal
-} // namespace testing