本文整理汇总了C++中CommandLine::ExtractBegin方法的典型用法代码示例。如果您正苦于以下问题：C++ CommandLine::ExtractBegin方法的具体用法？C++ CommandLine::ExtractBegin怎么用？C++ CommandLine::ExtractBegin使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CommandLine的用法示例。
在下文中一共展示了CommandLine::ExtractBegin方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main (int argc, char *argv[])
{
try
{
bool a = false;
bool nocreate = false;
string date;
bool f = false;
bool m = false;
string reference;
string t;
bool help = false;
bool version = false;
string fn;
CommandLine cl;
cl.AddSpec ("", 'a', a,
"change only the access time");
cl.AddSpec ("no-create", 'c', nocreate,
"do not create any files");
cl.AddSpec ("date", 'd', date,
"parse STRING and use it instead of current time", "STRING","");
cl.AddSpec ("", 'f', f,
"(ignored)");
cl.AddSpec ("", 'm', m,
"change only the modification time");
cl.AddSpec ("reference", 'r', reference,
"use this file's times instead of current time", "FILE", "");
cl.AddSpec ("", 't', t,
"use [[CC]YY]MMDDhhmm[.ss] instead of current time", "", " STAMP");
cl.AddSpec ("help", '\0', help,
"display this help and exit");
cl.AddSpec ("version", '\0', version,
"output version information and exit");
cl.AddSpec ("", '\0', fn,
"Target file", "FILE...");
// Group argv's into option groups
try
{
cl.GroupArgs (argc, argv, 1);
}
catch (const exception &e)
{
cerr << e.what () << endl;
cerr << "Usage: " << argv[0] << " " << cl.Usage () << endl;
cerr << "Try `" << argv[0] << " --help' for more information" << endl;
return -1;
}
// Convert from strings to their proper type
cl.ExtractBegin ();
cl.Extract (a);
cl.Extract (nocreate);
cl.Extract (date);
cl.Extract (f);
cl.Extract (m);
cl.Extract (reference);
cl.Extract (t);
cl.Extract (help);
cl.Extract (version);
cl.Extract (fn);
cl.ExtractEnd ();
if (help)
{
cout << "Usage: " << argv[0] << " [OPTION]... FILE..." << endl;
cout << "Mimic command line options of the program 'touch'." << endl << endl;
cout << "Mandatory arguments to long options are mandatory for short options too." << endl;
cout << cl.Help (" ", 23) << endl;
cout << "Note that the -d and -t options accept different time-date formats." << endl << endl;
cout << "If a FILE is -, touch standard output." << endl << endl;
cout << "Report bugs to <[email protected]>." << endl;
return 0;
}
if (version)
{
cout << "version 1.0.0" << endl;
return 0;
}
if (fn.empty ())
{
cerr << argv[0] << ": missing file operand" << endl;
cerr << "Try `" << argv[0] << " --help' for more information" << endl;
return -1;
}
cout << "a: " << a << endl;
cout << "nocreate: " << nocreate << endl;
cout << "date: " << date << endl;
cout << "f: " << f << endl;
cout << "m: " << m << endl;
cout << "reference: " << reference << endl;
cout << "t: " << t << endl;
cout << "FILE[0]: " << fn << endl;
vector<string> leftover_args = cl.GetLeftOverArgs ();
for (unsigned i = 0; i < leftover_args.size (); ++i)
//.........这里部分代码省略.........