[EMAIL PROTECTED] wrote:
> I do not expect from the cla framework to do the parsing for me, it
> should return strings associated with keys (which are strings too)
> from different locations (cla, cfg file, registry etc.).
... through something like lexical property map:
template<
typename KeyType
, typename T
, typename Compare = std::less<KeyType>
>
class lexical_property_map
: private std::map< KeyType,T,Compare >
{
typedef lexical_property_map self_t;
typedef std::map< KeyType,T,Compare > base_t;
public:
typedef typename base_t::key_type key_type;
using base_t::begin;
using base_t::end;
using base_t::empty;
using base_t::size;
using base_t::clear;
using base_t::find;
bool has_key(key_type const& a_key) const
{
return this->find(a_key) != this->end();
}
template< typename U >
self_t& put(key_type const& a_key, U const& a_value)
{
(*this)[a_key] = boost::lexical_cast<T>(a_value);
return *this;
}
template< typename U >
U get(key_type const& a_key, U const& a_default = U()) const
{
return this->has_key(a_key)
? boost::lexical_cast<U>( this->find(a_key)->second )
: a_default
;
}
T get(key_type const& a_key, T const& a_default = T()) const
{
return get<T>(a_key, a_default);
}
};
int main()
{
lexical_property_map<std::string,std::string> options;
options.put("delay", 50);
std::cout << options.get<int>("delay");
}
Aleksey
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