-/* $Id$
-
-This file is part of libmspcore
-Copyright © 2006-2009, 2011 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/strings/format.h>
#include "getopt.h"
using namespace std;
namespace Msp {
+GetOpt::GetOpt():
+ help(false)
+{
+ add_option("help", help, NO_ARG).set_help("Displays this help");
+}
+
GetOpt::~GetOpt()
{
- for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
+ for(OptionList::iterator i=opts.begin(); i!=opts.end(); ++i)
delete *i;
}
-GetOpt::OptBase &GetOpt::get_option(char s)
+GetOpt::OptionImpl &GetOpt::add_option(char s, const string &l, const Store &t, ArgType a)
{
- for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
+ if(l.empty())
+ throw invalid_argument("GetOpt::add_option");
+ if(t.is_list() && a!=REQUIRED_ARG)
+ throw invalid_argument("GetOpt::add_option");
+
+ for(OptionList::iterator i=opts.begin(); i!=opts.end(); )
+ {
+ if((s!=0 && (*i)->get_short()==s) || (*i)->get_long()==l)
+ {
+ delete *i;
+ opts.erase(i++);
+ }
+ else
+ ++i;
+ }
+
+ opts.push_back(new OptionImpl(s, l, t, a));
+ return *opts.back();
+}
+
+GetOpt::OptionImpl &GetOpt::get_option(char s)
+{
+ for(OptionList::iterator i=opts.begin(); i!=opts.end(); ++i)
if((*i)->get_short()==s)
return **i;
- throw UsageError(string("Unknown option -")+s);
+ throw usage_error(string("Unknown option -")+s);
}
-GetOpt::OptBase &GetOpt::get_option(const string &l)
+GetOpt::OptionImpl &GetOpt::get_option(const string &l)
{
- for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
+ for(OptionList::iterator i=opts.begin(); i!=opts.end(); ++i)
if((*i)->get_long()==l)
return **i;
- throw UsageError(string("Unknown option --")+l);
+ throw usage_error(string("Unknown option --")+l);
}
void GetOpt::operator()(unsigned argc, const char *const *argv)
{
- unsigned i = 1;
- for(; i<argc;)
+ try
{
- if(argv[i][0]=='-')
+ unsigned i = 1;
+ for(; i<argc;)
{
- if(argv[i][1]=='-')
+ if(argv[i][0]=='-')
{
- if(!argv[i][2])
- break;
-
- i += process_long(argv+i);
+ if(argv[i][1]=='-')
+ {
+ if(!argv[i][2])
+ break;
+
+ i += process_long(argv+i);
+ }
+ else
+ i += process_short(argv+i);
}
else
- i += process_short(argv+i);
+ args.push_back(argv[i++]);
}
- else
- args.push_back(argv[i++]);
+
+ for(; i<argc; ++i)
+ args.push_back(argv[i]);
}
-
- for(; i<argc; ++i)
- args.push_back(argv[i]);
+ catch(const usage_error &e)
+ {
+ throw usage_error(e.what(), "Usage: "+generate_usage(argv[0]));
+ }
+
+ if(help)
+ throw usage_error(string("Help for ")+argv[0]+":", generate_help());
}
unsigned GetOpt::process_long(const char *const *argp)
unsigned equals = 0;
for(; arg[equals] && arg[equals]!='='; ++equals) ;
- OptBase &opt = get_option(string(arg, equals));
+ OptionImpl &opt = get_option(string(arg, equals));
if(arg[equals])
// Process the part after the = as option argument
else if(opt.get_arg_type()==REQUIRED_ARG)
{
if(!argp[1])
- throw UsageError("Premature end of arguments");
+ throw usage_error("--"+string(arg)+" requires an argument");
// Process the next argument as option argument
opt.process(argp[1]);
// Loop through all characters in the argument
for(; *arg; ++arg)
{
- OptBase &opt = get_option(*arg);
+ OptionImpl &opt = get_option(*arg);
if(arg[1] && opt.get_arg_type()!=NO_ARG)
{
else if(opt.get_arg_type()==REQUIRED_ARG)
{
if(!argp[1])
- throw UsageError("Premature end of arguments");
+ throw usage_error("-"+string(1, *arg)+" requires an argument");
// Use the next argument as option argument
opt.process(argp[1]);
string GetOpt::generate_usage(const string &argv0) const
{
- ostringstream line;
-
- line<<argv0;
- for(list<OptBase *>::const_iterator i=opts.begin(); i!=opts.end(); ++i)
+ string result = argv0;
+ for(OptionList::const_iterator i=opts.begin(); i!=opts.end(); ++i)
{
- line<<" [";
+ result += " [";
if((*i)->get_short())
{
- line<<'-'<<(*i)->get_short();
+ result += format("-%c", (*i)->get_short());
if(!(*i)->get_long().empty())
- line<<'|';
+ result += '|';
else if((*i)->get_arg_type()==OPTIONAL_ARG)
- line<<'['<<(*i)->get_metavar()<<']';
+ result += format("[%s]", (*i)->get_metavar());
else if((*i)->get_arg_type()==REQUIRED_ARG)
- line<<' '<<(*i)->get_metavar();
+ result += format(" %s", (*i)->get_metavar());
}
if(!(*i)->get_long().empty())
{
- line<<"--"<<(*i)->get_long();
+ result += format("--%s", (*i)->get_long());
if((*i)->get_arg_type()==OPTIONAL_ARG)
- line<<"[="<<(*i)->get_metavar()<<']';
+ result += format("[=%s]", (*i)->get_metavar());
else if((*i)->get_arg_type()==REQUIRED_ARG)
- line<<'='<<(*i)->get_metavar();
+ result += format("=%s", (*i)->get_metavar());
}
- line<<']';
+ result += ']';
}
- return line.str();
+ return result;
}
string GetOpt::generate_help() const
{
bool any_short = false;
- for(list<OptBase *>::const_iterator i=opts.begin(); (!any_short && i!=opts.end()); ++i)
+ for(OptionList::const_iterator i=opts.begin(); (!any_short && i!=opts.end()); ++i)
any_short = (*i)->get_short();
string::size_type maxw = 0;
list<string> switches;
- for(list<OptBase *>::const_iterator i=opts.begin(); i!=opts.end(); ++i)
+ for(OptionList::const_iterator i=opts.begin(); i!=opts.end(); ++i)
{
- ostringstream swtch;
+ string swtch;
if((*i)->get_short())
{
- swtch<<'-'<<(*i)->get_short();
+ swtch += format("-%c", (*i)->get_short());
if(!(*i)->get_long().empty())
- swtch<<", ";
+ swtch += ", ";
else if((*i)->get_arg_type()==OPTIONAL_ARG)
- swtch<<'['<<(*i)->get_metavar()<<']';
+ swtch += format("[%s]", (*i)->get_metavar());
else if((*i)->get_arg_type()==REQUIRED_ARG)
- swtch<<' '<<(*i)->get_metavar();
+ swtch += format(" %s", (*i)->get_metavar());
}
else if(any_short)
- swtch<<" ";
+ swtch += " ";
if(!(*i)->get_long().empty())
{
- swtch<<"--"<<(*i)->get_long();
+ swtch += format("--%s", (*i)->get_long());
if((*i)->get_arg_type()==OPTIONAL_ARG)
- swtch<<"[="<<(*i)->get_metavar()<<']';
+ swtch += format("[=%s]", (*i)->get_metavar());
else if((*i)->get_arg_type()==REQUIRED_ARG)
- swtch<<'='<<(*i)->get_metavar();
+ swtch += format("=%s", (*i)->get_metavar());
}
- switches.push_back(swtch.str());
- maxw = max(maxw, switches.back().size());
+ switches.push_back(swtch);
+ maxw = max(maxw, swtch.size());
}
string result;
list<string>::const_iterator j = switches.begin();
- for(list<OptBase *>::const_iterator i=opts.begin(); i!=opts.end(); ++i, ++j)
- {
- result += " "+*j;
- result += string(maxw+2-j->size(), ' ');
- result += (*i)->get_help();
- result += '\n';
- }
+ for(OptionList::const_iterator i=opts.begin(); i!=opts.end(); ++i, ++j)
+ result += format(" %s%s%s\n", *j, string(maxw+2-j->size(), ' '), (*i)->get_help());
return result;
}
-GetOpt::OptBase::OptBase(char s, const std::string &l, ArgType a):
+GetOpt::OptionImpl::OptionImpl(char s, const std::string &l, const Store &t, ArgType a):
shrt(s),
lng(l),
arg_type(a),
seen_count(0),
- metavar("ARG")
+ ext_seen_count(0),
+ metavar("ARG"),
+ store(t.clone())
{ }
-GetOpt::OptBase &GetOpt::OptBase::set_help(const string &h)
+GetOpt::OptionImpl::~OptionImpl()
+{
+ delete store;
+}
+
+GetOpt::OptionImpl &GetOpt::OptionImpl::set_help(const string &h)
{
help = h;
return *this;
}
-GetOpt::OptBase &GetOpt::OptBase::set_help(const string &h, const string &m)
+GetOpt::OptionImpl &GetOpt::OptionImpl::set_help(const string &h, const string &m)
{
help = h;
metavar = m;
return *this;
}
-void GetOpt::OptBase::process()
+GetOpt::OptionImpl &GetOpt::OptionImpl::bind_seen_count(unsigned &c)
+{
+ ext_seen_count = &c;
+ return *this;
+}
+
+void GetOpt::OptionImpl::process()
{
if(arg_type==REQUIRED_ARG)
- throw UsageError("--"+lng+" requires an argument");
+ throw usage_error("--"+lng+" requires an argument");
+
++seen_count;
+ if(ext_seen_count)
+ *ext_seen_count = seen_count;
- store();
+ try
+ {
+ store->store();
+ }
+ catch(const exception &e)
+ {
+ throw usage_error("Invalid argument for --"+lng+" ("+e.what()+")");
+ }
}
-void GetOpt::OptBase::process(const string &arg)
+void GetOpt::OptionImpl::process(const string &arg)
{
if(arg_type==NO_ARG)
- throw UsageError("--"+lng+" takes no argument");
+ throw usage_error("--"+lng+" takes no argument");
+
++seen_count;
+ if(ext_seen_count)
+ *ext_seen_count = seen_count;
- store(arg);
+ try
+ {
+ store->store(arg);
+ }
+ catch(const exception &e)
+ {
+ throw usage_error("Invalid argument for --"+lng+" ("+e.what()+")");
+ }
}
} // namespace Msp
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