X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=examples%2Fgrep.cpp;h=ca23499a2165480d1f705d5a58a9a3f40aac914a;hp=c87ee72171615ec8056adcf687f8f0e74d78b621;hb=7be37ad97a2fd3494cb5d56badb45997353ff709;hpb=628d762fbfd512aedde6f313f66594291dad4eb1

diff --git a/examples/grep.cpp b/examples/grep.cpp
index c87ee72..ca23499 100644
--- a/examples/grep.cpp
+++ b/examples/grep.cpp
@@ -9,26 +9,20 @@ using namespace Msp;
 int main(int argc, char **argv)
 {
 	bool debug = false;
+	string re_str;
 	GetOpt getopt;
 	getopt.add_option('d', "debug", debug, GetOpt::NO_ARG);
+	getopt.add_argument("regex", re_str, GetOpt::REQUIRED_ARG);
 	getopt(argc, argv);
 
-	const vector<string> &args = getopt.get_args();
-
-	if(args.empty())
-	{
-		cerr<<"Usage: "<<argv[0]<<" <regex>\n";
-		return 1;
-	}
-
-	Regex regex(args[0]);
+	Regex regex(re_str);
 	if(debug)
-		cout<<regex.disassemble();
+		cout << regex.disassemble();
 	string line;
 	while(getline(cin, line))
 	{
 		if(RegMatch match = regex.match(line))
-			cout<<line<<'\n';
+			cout << line << '\n';
 	}
 
 	return 0;