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extractEvt.cpp
Go to the documentation of this file.
1 #include "merge/extractEvt.C"
2 #include <cstdlib>
3 #include <stdexcept>
4
5 static int usage()
6 {
7 ::printf( "Gaudi event extraction facility for ROOT tree based files.\n"
8 " Usage: \n"
9 "extract_event -o <output-file> -i <input-file> ...]\n\n"
10 "input- and output files may specify any legal (ROOT) file name.\n"
11 " -output Specify output file name.\n"
12 " -input Specify input file name.\n"
13 " -event Specify the event entry number.\n" );
14 return 1;
15 }
16
17 int main( int argc, char** argv )
18 {
19 string input;
20 string output;
21 int evt_num = -1;
22 for ( int i = 1; i < argc; ++i ) {
23 if ( *argv[i] == '-' ) {
24 switch (::toupper( *( argv[i] + 1 ) ) ) {
25 case 'E':
26 if ( 1 != ::sscanf( argv[i + 1], "%d", &evt_num ) ) {
27 ::printf( "\nERROR: No valid event identifier given.\n\n" );
28 return usage();
29 }
30 ++i;
31 break;
32 case 'O':
33 if ( i + 1 < argc ) output = argv[i + 1];
34 ++i;
35 break;
36 case 'I':
37 if ( i + 1 < argc ) input = argv[i + 1];
38 ++i;
39 break;
40 default:
41 return usage();
42 }
43 }
44 }
45 if ( input.empty() ) {
46 ::printf( "\nERROR: No input file(s) supplied\n\n" );
47 return usage();
48 } else if ( output.empty() ) {
49 ::printf( "\nERROR: No output file supplied.\n\n" );
50 return usage();
51 } else if ( evt_num < 0 ) {
52 ::printf( "\nERROR: No valid event identifier given.\n\n" );
53 return usage();
54 }
55 gROOT->SetBatch( kTRUE );
56 try {
57 if ( extract_event( input.c_str(), output.c_str(), evt_num ) != EXTRACT_SUCCESS ) {
58 ::printf( "\nERROR: Event extraction from file %s failed.\n", input.c_str() );
59 return 1;
60 }
61 return 0;
62 } catch ( const std::exception& e ) {
63 ::printf( "\nERROR: Event extraction from file %s failed [%s]\n", input.c_str(), e.what() );
64 } catch ( ... ) {
65 ::printf( "\nERROR: Event extraction from file %s failed [unknown reason]\n", input.c_str() );
66 }
67 return 1;
68 }
gaudirun.output
output
Definition: gaudirun.py:404
gaudirun.argv
list argv
Definition: gaudirun.py:235
usage
void usage(std::string argv0)
Definition: listcomponents.cpp:39
std::exception::what
T what(T...args)
std::exception
STL class.
plotBacklogPyRoot.argc
argc
Definition: plotBacklogPyRoot.py:138
main
int main(int argc, char **argv)
Definition: extractEvt.cpp:17
toupper
void toupper(std::string &s)
Definition: StatusCodeSvc.cpp:10