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#include <bobcat/process>
#include <string>
#include <iostream>
#include <climits>
using namespace std;
using namespace FBB;
void prompt(char const *task)
{
cout << "Press Enter to start " << task << endl;
cin.ignore(INT_MAX, '\n');
}
int main(int argc, char **argv)
try
{
string line;
Process process(Process::CIN | Process::COUT,
"/usr/bin/sha1sum");
prompt("sha1sum");
process.start();
process << "Hello world\n"; // input to sha1sum
process.close();
process >> line; // retrieve the value
cout << line << endl;
process.stop();
if (argc > 1) // sending an e-mail
{
cout << "Sending mail to " << argv[1] << endl;
prompt("/usr/bin/mail");
process.setCommand("/usr/bin/mail -s 'from Process' ");
process += argv[1];
process.start(Process::CIN);
process << "This mail was sent by the process drive\n";
process << "It consists of multiple lines of text\n";
process.close();
process.waitForChild();
}
prompt("5 seconds IO to /bin/cat");
process.setTimeLimit(5); // change time limit
process = "/bin/cat";
while (process.active())
{
cout << "? ";
getline(cin, line);
process << line << endl; // to /bin/cat
line.clear();
if (!getline(process, line)) // from /bin/cat
break;
cout << "Received: " << line << endl;
}
cout << "/bin/cat forcefully terminated\n";
process.setTimeLimit(0);
for (size_t trial = 0; trial < 5; ++trial)
{
prompt("ls");
process(Process::COUT) = "/bin/ls";
cerr << process.str() << endl;
size_t count = 0;
while (getline(process, line))
cout << ++count << ": " << line << endl;
}
}
catch (Errno const &err)
{
cerr << "EXCEPTION CAUGHT: " << err.what() << endl;
return 1;
}
catch (...)
{
cerr << "Unrecognized exception in main()\n";
return 0;
}
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