#include <iostream>
#include <string>
namespace {
{
std::string_view path;
if (argc > 0) {
path = argv[0];
#ifdef FZ_WINDOWS
auto delim = path.find_last_of("/\\");
#else
auto delim = path.find_last_of("/");
#endif
if (delim == std::string::npos) {
path = std::string_view();
}
else {
path = path.substr(0, delim + 1);
}
}
}
#ifdef FZ_WINDOWS
auto suffix =
fzT(
".exe");
#else
#endif
}
int main(int argc, char *argv[])
{
if (!p.
spawn(get_program_dir(argc, argv) +
fzT(
"timer_fizzbuzz") + suffix)) {
std::cerr << "Could not spawn process" << std::endl;
return 1;
}
std::cout << "Spawned process" << std::endl;
std::cerr << "Sending data to the process failed. Looks like it could not be started or has quit early." << std::endl;
return 1;
}
std::cout << "Waiting on process to print woof..." << std::endl;
std::string input;
bool done = false;
while (!done) {
char buf[100];
int r = p.
read(buf, 100);
if (!r) {
std::cerr << "Unexpected EOF from process" << std::endl;
return 1;
}
else if (r < 0) {
std::cerr << "Could not read from process" << std::endl;
return 1;
}
input += std::string(buf, r);
auto delim = input.find_first_of("\r\n");
while (delim != std::string::npos) {
std::string line = input.substr(0, delim);
input = input.substr(delim + 1);
delim = input.find_first_of("\r\n");
if (!line.empty()) {
std::cout << "Received line from process: " << line << std::endl;
if (line == "woof") {
done = true;
}
}
}
}
std::cerr << "Sending data to the process failed. Looks like it could not be started or has quit early." << std::endl;
return 1;
}
std::cout << "Told process to quit." << std::endl;
while (true) {
char buf[100];
int r = p.
read(buf, 100);
if (!r) {
std::cerr << "Received the expected EOF from process" << std::endl;
break;
}
else if (r < 0) {
std::cerr << "Could not read from process" << std::endl;
return 1;
}
}
return 0;
}