add support for a help flag and print text mode error message for nonexisting file

This commit is contained in:
Axel Kohlmeyer
2023-10-06 02:46:15 -04:00
parent 3999b3e557
commit fcc92b50db

View File

@ -14,13 +14,30 @@
#include "lammpsgui.h" #include "lammpsgui.h"
#include <QApplication> #include <QApplication>
#include <QFileInfo>
#include <cstdio>
#include <cstring>
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
QApplication a(argc, argv); QApplication a(argc, argv);
const char *infile = nullptr; const char *infile = nullptr;
if (argc > 1) infile = argv[1]; if (argc > 1) {
infile = argv[1];
if ((strcmp(infile, "-help") == 0) || (strcmp(infile, "-h") == 0)) {
printf("This is LAMMPS-GUI version " LAMMPS_GUI_VERSION
" using Qt version " QT_VERSION_STR "\n");
printf("Usage: %s [-h|-help|<inputfile>]\n", argv[0]);
return 1;
}
if (!QFileInfo::exists(infile)) {
printf("Input file %s does not exist\n", infile);
printf("Usage: %s [-h|-help|<inputfile>]\n", argv[0]);
return 2;
}
}
LammpsGui w(nullptr, infile); LammpsGui w(nullptr, infile);
w.show(); w.show();