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// file : CCF/CodeGenerationKit/CommandLineDescriptor.hpp
// author : Boris Kolpackov <boris@dre.vanderbilt.edu>
// cvs-id : $Id$
#ifndef COMMAND_LINE_DESCRIPTOR_H
#define COMMAND_LINE_DESCRIPTOR_H
#include <map>
#include <list>
#include <vector>
#include <string>
#include <ostream>
#include <cassert>
namespace CL
{
struct OptionType
{
enum Value
{
flag,
value
};
OptionType (Value v)
: v_ (v)
{
}
operator Value () const
{
return v_;
}
private:
Value v_;
};
class OptionDescription
{
public:
OptionDescription (std::string name,
std::string description,
OptionType type,
bool optional = true)
: optional_ (optional),
type_ (type),
name_ (name),
value_synopsis_ (),
description_ (description)
{
// There should be value_synopsis for non-flag options.
//
assert (type == OptionType::flag);
}
OptionDescription (std::string name,
std::string value_synopsis,
std::string description,
OptionType type,
bool optional = true)
: optional_ (optional),
type_ (type),
name_ (name),
value_synopsis_ (value_synopsis),
description_ (description)
{
}
public:
bool
optional () const
{
return optional_;
}
OptionType
type () const
{
return type_;
}
std::string
name () const
{
return name_;
}
std::string
value_synopsis () const
{
return value_synopsis_;
}
std::string
description () const
{
return description_;
}
private:
bool optional_;
OptionType type_;
std::string name_;
std::string value_synopsis_;
std::string description_;
};
class Description
{
public:
Description (std::string command)
: command_ (command)
{
}
private:
Description (Description const&);
Description&
operator= (Description const&);
private:
// We are storing pointer to elements in this list in the map below.
// To prevent element moving we will use list instead of vector.
//
typedef
std::list<OptionDescription>
OptionDescriptionList;
typedef
std::map<std::string, OptionDescription*>
OptionDescriptionMap;
public:
std::string
command () const
{
return command_;
}
public:
typedef
OptionDescriptionList::const_iterator
OptionIterator;
OptionIterator
begin_option () const
{
return options_.begin ();
}
OptionIterator
end_option () const
{
return options_.end ();
}
typedef
OptionDescriptionMap::const_iterator
OptionMapIterator;
OptionDescription const*
find_option (std::string const& option) const
{
OptionDescriptionMap::const_iterator i (
option_map_.find (option));
return i == option_map_.end () ? 0 : i->second;
}
void
add_option (OptionDescription const& od)
{
options_.push_back (od);
option_map_[od.name ()] = &options_.back ();
}
private:
typedef
std::vector<std::string>
ArgumentDescriptionList;
public:
typedef
ArgumentDescriptionList::const_iterator
ArgumentIterator;
ArgumentIterator
begin_argument () const
{
return arguments_.begin ();
}
ArgumentIterator
end_argument () const
{
return arguments_.end ();
}
void
add_argument (std::string arg)
{
arguments_.push_back (arg);
}
private:
std::string command_;
OptionDescriptionList options_;
OptionDescriptionMap option_map_;
ArgumentDescriptionList arguments_;
};
inline void
print_text (std::ostream& os, Description const& d)
{
using std::endl;
os << d.command ();
Description::OptionIterator ob = d.begin_option ();
Description::OptionIterator oe = d.end_option ();
if (ob != oe)
{
os << " { OPTIONS }";
}
Description::ArgumentIterator ab = d.begin_argument ();
Description::ArgumentIterator ae = d.end_argument ();
for (; ab != ae; ab++)
{
os << " <" << *ab << ">";
}
os << endl << endl;
for (; ob != oe; ob++)
{
bool flag (ob->type () == OptionType::flag);
bool optional (ob->optional ());
std::string prefix (ob->name ().length () == 1 ? "-" : "--");
os << (optional ? "[" : "") << prefix << ob->name ()
<< (flag ? "" : " ") << ob->value_synopsis ()
<< (optional ? "]" : "")
<< endl;
os << "\t\t" << ob->description () << endl << endl;
}
}
inline void
print_html (std::ostream& os, Description const& d)
{
using std::endl;
os << "<html>" << endl
<< "<body>" << endl
<< "<div align=\"center\">" << endl
<< "<table width=\"700\" border=\"0\" cellspacing=\"0\" "
<< "cellpadding=\"0\">" << endl
<< "<tr>" << endl
<< "<td>" << endl;
os << "<p>" << endl
<< "<code>" << endl;
os << d.command ();
Description::OptionIterator ob = d.begin_option ();
Description::OptionIterator oe = d.end_option ();
if (ob != oe)
{
os << " { OPTIONS }";
}
Description::ArgumentIterator ab = d.begin_argument ();
Description::ArgumentIterator ae = d.end_argument ();
for (; ab != ae; ab++)
{
os << " <" << *ab << ">";
}
os << endl
<< "</code>" << endl
<< "</p>" << endl;
os << "<dl>" << endl;
for (; ob != oe; ob++)
{
bool flag (ob->type () == OptionType::flag);
bool optional (ob->optional ());
std::string prefix (ob->name ().length () == 1 ? "-" : "--");
os << "<dt>" << endl
<< "<code>" << endl
<< (optional ? "[" : "") << prefix << ob->name ()
<< (flag ? "" : " ") << ob->value_synopsis ()
<< (optional ? "]" : "") << endl
<< "</code>" << endl
<< "</dt>" << endl;
os << "<dd>" << endl
<< "<p>" << endl
<< ob->description () << endl
<< "</p>" << endl
<< "</dd>" << endl;
}
os << "</dl>" << endl;
os << "</td>" << endl
<< "</tr>" << endl
<< "</table>" << endl
<< "</div>" << endl
<< "</body>" << endl
<< "</html>" << endl;
}
}
#endif // COMMAND_LINE_DESCRIPTOR_H
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