C++ Library containing a lot of needful things: Stack Trace, Command Line Parser, Resource Handling, Configuration Files, Unix Command Execution, Directories, Regular Expressions, Tokenizer, Function Trace, Standard Extensions.
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/** @file
$Id$
$Date$
$Author$
@copy © Marc Wäckerlin
@license LGPL, see file <a href="license.html">COPYING</a>
$Log$
Revision 1.3 2005/02/08 12:31:36 marc
new static methods to simplify access to options
Revision 1.2 2004/11/25 18:26:04 marc
Constness corrected
Revision 1.1 2004/08/28 16:13:42 marc
mrw-c++-0.92 (mrw)
- new file: version.cpp
- new file header for all sources
- work around warning in mrw::auto<T>
- possibility to compile without log4cxx
- work around bugs in demangle.h and libiberty.h
- corrections in documentation
- added simple tracing mechanism
- more warnings
- small corrections in Auto<>::Free and a new test for it
- possibility to compile without stack trace
*/
#include <mrw/arg.hpp>
#include <mrw/exception.hpp>
namespace mrw {
const std::string& Param::Value::toString() const throw(std::exception) {
throw mrw::bad_cast();
}
int Param::Value::toInt() const throw(std::exception) {
throw mrw::bad_cast();
}
bool Param::Value::toBool() const throw(std::exception) {
throw mrw::bad_cast();
}
void Param::IntValue::operator=(const std::string& s) throw(std::exception) {
if (!(std::stringstream(s)>>_i)) throw mrw::bad_cast();
}
const mrw::SmartPointer<Param::Value>& Param::operator[](unsigned int i) const
throw(std::exception) {
if (i<_params.size()) return _params[i];
throw mrw::out_of_range
(((std::stringstream&)
(std::stringstream()<<"check failed: "
<<i<<'<'<<_params.size())).str());
}
mrw::SmartPointer<Param::Value>& Param::setable(unsigned int i)
throw(std::exception) {
if (i<_params.size()) return _params[i];
throw mrw::out_of_range
(((std::stringstream&)
(std::stringstream()<<"check failed: "
<<i<<'<'<<_params.size())).str());
}
Args& Args::operator<<(const mrw::Opt& opt) throw(std::exception) {
// twice the same, but other sort order
Options::iterator it(_options.insert(_options.end(), opt));
if (!_shortopts.insert(ShortOpts::value_type(opt._shortname, it)).second)
throw mrw::invalid_argument(std::string(1, opt._shortname));
if (!_longopts.insert(LongOpts::value_type(opt._longname, it)).second)
throw mrw::invalid_argument(opt._longname);
return *this;
}
Args& Args::operator<<(char const*const*const argv) throw(std::exception) {
if (_argc<0)
throw mrw::invalid_argument("argc was not set when shifting argv");
return parse(_argc, argv);
}
const Opt& Args::find(char c) const throw(std::exception) {
ShortOpts::const_iterator it(_shortopts.find(c));
if (it==_shortopts.end()) throw mrw::out_of_range(std::string(1, c));
return *it->second;
}
const Opt& Args::find(const std::string& s) const throw(std::exception) {
LongOpts::const_iterator it(_longopts.find(s));
if (it==_longopts.end()) throw mrw::out_of_range(s);
return *it->second;
}
Args& Args::parse(int argc, char const*const*const argv)
throw(std::exception) {
if (argc>0) _filename = argv[0];
for (int i(1); i<argc; ++i) {
std::string arg(argv[i]);
if (arg.find("--")==0 && arg!="--") { // long arguments
LongOpts::iterator it(_longopts.find(arg));
if (it!=_longopts.end() || i+it->second->args().size()>=argc)
throw mrw::invalid_argument(arg);
it->second->set();
for (int j(0), l(it->second->args().size()); j<l; ++j) {
*(it->second->args().setable(j)) = argv[++i];
}
} else if (arg.find("-")==0) { // short arguments
// first check all, then set all
for (int j(1), l(arg.size()); j<l; ++j) {
ShortOpts::iterator it(_shortopts.find(arg[j]));
if (it==_shortopts.end() || it->second->args().size()>0 &&
(j+1!=l || i+it->second->args().size()>=argc))
throw mrw::invalid_argument(arg);
}
for (int j(1), l(arg.size()); j<l; ++j) {
ShortOpts::iterator it(_shortopts.find(arg[j]));
it->second->set();
if (j+1==l && it->second->args().size()>0) {
for (int k(0); k < it->second->args().size(); ++k) {
*(it->second->args().setable(k)) = argv[++i];
}
}
}
} else {
if (arg!="--") _otherargs.push_back(arg);
while (++i<argc) _otherargs.push_back(argv[i]);
}
}
if (_help && find(_help)) help();
return *this;
}
}