Let users(1) use an std::set, instead of std::{vector,sort,unique}.
Reviewed by: gahr
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55ba623622
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975f912456
@ -36,14 +36,14 @@ __FBSDID("$FreeBSD$");
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#include <iostream>
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#include <iterator>
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#include <string>
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#include <vector>
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#include <set>
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using namespace std;
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int
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main(int argc, char **)
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{
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struct utmpx *ut;
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vector<string> names;
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set<string> names;
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if (argc > 1) {
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cerr << "usage: users" << endl;
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@ -51,19 +51,16 @@ main(int argc, char **)
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}
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setutxent();
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while ((ut = getutxent()) != NULL) {
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if (ut->ut_type != USER_PROCESS)
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continue;
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names.push_back(ut->ut_user);
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}
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while ((ut = getutxent()) != NULL)
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if (ut->ut_type == USER_PROCESS)
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names.insert(ut->ut_user);
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endutxent();
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if (names.size() == 0) {
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return (0);
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if (!names.empty()) {
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auto last = names.end();
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--last;
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copy(names.begin(), last, ostream_iterator<string>(cout, " "));
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cout << *last << endl;
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}
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sort(begin(names), end(names));
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vector<string>::iterator last(unique(begin(names), end(names)));
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copy(begin(names), last-1, ostream_iterator<string>(cout, " "));
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cout << *(last-1) << endl;
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return (0);
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}
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