int main()
{
std::string s = "Some people, when confronted with a problem, think "
"\"I know, I'll use regular expressions.\" "
"Now they have two problems.";
std::regex self_regex("REGULAR EXPRESSIONS",
std::regex_constants::ECMAScript | std::regex_constants::icase);
if (std::regex_search(s, self_regex)) {
std::cout << "Text contains the phrase 'regular expressions'\n";
}
std::regex word_regex("(\\S+)");
auto words_begin =
std::sregex_iterator(s.begin(), s.end(), word_regex);
auto words_end = std::sregex_iterator();
std::cout << "Found "
<< std::distance(words_begin, words_end)
<< " words\n";
const int N = 6;
std::cout << "Words longer than " << N << " characters:\n";
for (std::sregex_iterator i = words_begin; i != words_end; ++i) {
std::smatch match = *i;
std::string match_str = match.str();
if (match_str.size() > N) {
std::cout << " " << match_str << '\n';
}
}
std::regex long_word_regex("(\\w{7,})");
std::string new_s = std::regex_replace(s, long_word_regex, "[$&]");
std::cout << new_s << '\n';
}
static void readParamsAndStartTrace()
{
std::string paramsLine;
char buff[4096];
while (true) {
ssize_t sz = read(s_stdout_fd, buff, 4095);
if (sz < 0) {
cleanup();
return ;
}
buff[sz] = '\0';
paramsLine += buff;
if (paramsLine.find('\n') > 0)
break;
}
std::regex word_regex("(\"[^\"]*\")|([^\\s]+)");
auto words_begin =
std::sregex_iterator(paramsLine.begin(), paramsLine.end(), word_regex);
auto words_end = std::sregex_iterator();
std::vector<std::string> paramsVector;
std::vector<char *> params;
params.push_back(TAG);
for (std::sregex_iterator i = words_begin; i != words_end; ++i) {
paramsVector.push_back(i->str());
params.push_back(const_cast<char*>(paramsVector.back().c_str()));
}
{
std::unique_lock<std::mutex> lock(s_stateMutex);
__android_log_print(ANDROID_LOG_DEBUG, TAG, "Wait for stderr socket");
s_stateWait.wait(lock, []{return s_stderr_fd != -1; });
}
__android_log_print(ANDROID_LOG_DEBUG, TAG, "Start retrace");
optind = 1;
optreset = 1;
main(params.size(), ¶ms[0]);
cleanup();
// Remove "std::exit" after apitrace will cleanup its static variables.
std::exit(0); // goodbye cruel world !
}
