/* $Id$
This file is part of libmspcore
-Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
+Copyright © 2006-2009, 2011 Mikko Rasa, Mikkosoft Productions
Distributed under the LGPL
*/
+
#include "getopt.h"
using namespace std;
delete *i;
}
-/**
-Generates a single line that gives an overview about the known options.
-
-@param argv0 The program name to be used in the usage string
-
-@return The generated usage string
-*/
-string GetOpt::generate_usage(const string &argv0) const
+GetOpt::OptBase &GetOpt::get_option(char s)
{
- ostringstream line;
-
- line<<argv0;
- for(list<OptBase *>::const_iterator i=opts.begin(); i!=opts.end(); ++i)
- {
- line<<" [";
- if((*i)->get_short())
- {
- line<<'-'<<(*i)->get_short();
- if(!(*i)->get_long().empty())
- line<<'|';
- else if((*i)->get_arg_type()==OPTIONAL_ARG)
- line<<'['<<(*i)->get_metavar()<<']';
- else if((*i)->get_arg_type()==REQUIRED_ARG)
- line<<' '<<(*i)->get_metavar();
- }
- if(!(*i)->get_long().empty())
- {
- line<<"--"<<(*i)->get_long();
-
- if((*i)->get_arg_type()==OPTIONAL_ARG)
- line<<"[="<<(*i)->get_metavar()<<']';
- else if((*i)->get_arg_type()==REQUIRED_ARG)
- line<<'='<<(*i)->get_metavar();
- }
- line<<']';
- }
-
- return line.str();
+ for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
+ if((*i)->get_short()==s)
+ return **i;
+ throw UsageError(string("Unknown option -")+s);
}
-/**
-Generates help for known options in tabular format, one option per line.
-The returned string will have a linefeed at the end.
-*/
-string GetOpt::generate_help() const
+GetOpt::OptBase &GetOpt::get_option(const string &l)
{
- bool any_short=false;
- for(list<OptBase *>::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)
- {
- ostringstream swtch;
- if((*i)->get_short())
- {
- swtch<<'-'<<(*i)->get_short();
- if(!(*i)->get_long().empty())
- swtch<<", ";
- else if((*i)->get_arg_type()==OPTIONAL_ARG)
- swtch<<'['<<(*i)->get_metavar()<<']';
- else if((*i)->get_arg_type()==REQUIRED_ARG)
- swtch<<' '<<(*i)->get_metavar();
- }
- else if(any_short)
- swtch<<" ";
- if(!(*i)->get_long().empty())
- {
- swtch<<"--"<<(*i)->get_long();
-
- if((*i)->get_arg_type()==OPTIONAL_ARG)
- swtch<<"[="<<(*i)->get_metavar()<<']';
- else if((*i)->get_arg_type()==REQUIRED_ARG)
- swtch<<'='<<(*i)->get_metavar();
- }
- switches.push_back(swtch.str());
- maxw=max(maxw, switches.back().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';
- }
-
- return result;
+ for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
+ if((*i)->get_long()==l)
+ return **i;
+ throw UsageError(string("Unknown option --")+l);
}
void GetOpt::operator()(unsigned argc, const char *const *argv)
{
- unsigned i=1;
+ unsigned i = 1;
for(; i<argc;)
{
if(argv[i][0]=='-')
if(!argv[i][2])
break;
- i+=process_long(argv+i);
+ i += process_long(argv+i);
}
else
- i+=process_short(argv+i);
+ i += process_short(argv+i);
}
else
args.push_back(argv[i++]);
args.push_back(argv[i]);
}
-GetOpt::OptBase &GetOpt::get_option(char s)
-{
- for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
- if((*i)->get_short()==s)
- return **i;
- throw UsageError(string("Unknown option -")+s);
-}
-
-GetOpt::OptBase &GetOpt::get_option(const string &l)
-{
- for(list<OptBase *>::iterator i=opts.begin(); i!=opts.end(); ++i)
- if((*i)->get_long()==l)
- return **i;
- throw UsageError(string("Unknown option --")+l);
-}
-
-/**
-Processes the given argument as a long option.
-
-@param argp Pointer to the argument
-
-@return The number of arguments eaten (1 or 2)
-*/
unsigned GetOpt::process_long(const char *const *argp)
{
// Skip the --
- const char *arg=argp[0]+2;
+ const char *arg = argp[0]+2;
// See if the argument contains an =
- unsigned equals=0;
+ unsigned equals = 0;
for(; arg[equals] && arg[equals]!='='; ++equals) ;
- OptBase &opt=get_option(string(arg, equals));
+ OptBase &opt = get_option(string(arg, equals));
if(arg[equals])
// Process the part after the = as option argument
return 1;
}
-/**
-Processes short options from the given argument.
-
-@param argp Pointer to the argument
-
-@return The number of arguments eaten (1 or 2)
-*/
unsigned GetOpt::process_short(const char *const *argp)
{
// Skip the -
- const char *arg=argp[0]+1;
+ const char *arg = argp[0]+1;
// Loop through all characters in the argument
for(; *arg; ++arg)
{
- OptBase &opt=get_option(*arg);
+ OptBase &opt = get_option(*arg);
if(arg[1] && opt.get_arg_type()!=NO_ARG)
{
return 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)
+ {
+ line<<" [";
+ if((*i)->get_short())
+ {
+ line<<'-'<<(*i)->get_short();
+ if(!(*i)->get_long().empty())
+ line<<'|';
+ else if((*i)->get_arg_type()==OPTIONAL_ARG)
+ line<<'['<<(*i)->get_metavar()<<']';
+ else if((*i)->get_arg_type()==REQUIRED_ARG)
+ line<<' '<<(*i)->get_metavar();
+ }
+ if(!(*i)->get_long().empty())
+ {
+ line<<"--"<<(*i)->get_long();
+
+ if((*i)->get_arg_type()==OPTIONAL_ARG)
+ line<<"[="<<(*i)->get_metavar()<<']';
+ else if((*i)->get_arg_type()==REQUIRED_ARG)
+ line<<'='<<(*i)->get_metavar();
+ }
+ line<<']';
+ }
+
+ return line.str();
+}
+
+string GetOpt::generate_help() const
+{
+ bool any_short = false;
+ for(list<OptBase *>::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)
+ {
+ ostringstream swtch;
+ if((*i)->get_short())
+ {
+ swtch<<'-'<<(*i)->get_short();
+ if(!(*i)->get_long().empty())
+ swtch<<", ";
+ else if((*i)->get_arg_type()==OPTIONAL_ARG)
+ swtch<<'['<<(*i)->get_metavar()<<']';
+ else if((*i)->get_arg_type()==REQUIRED_ARG)
+ swtch<<' '<<(*i)->get_metavar();
+ }
+ else if(any_short)
+ swtch<<" ";
+ if(!(*i)->get_long().empty())
+ {
+ swtch<<"--"<<(*i)->get_long();
+
+ if((*i)->get_arg_type()==OPTIONAL_ARG)
+ swtch<<"[="<<(*i)->get_metavar()<<']';
+ else if((*i)->get_arg_type()==REQUIRED_ARG)
+ swtch<<'='<<(*i)->get_metavar();
+ }
+ switches.push_back(swtch.str());
+ maxw = max(maxw, switches.back().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';
+ }
+
+ return result;
+}
+
GetOpt::OptBase::OptBase(char s, const std::string &l, ArgType a):
shrt(s),
GetOpt::OptBase &GetOpt::OptBase::set_help(const string &h)
{
- help=h;
+ help = h;
return *this;
}
GetOpt::OptBase &GetOpt::OptBase::set_help(const string &h, const string &m)
{
- help=h;
- metavar=m;
+ help = h;
+ metavar = m;
return *this;
}
projects / libs / core.git / blobdiff