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#ifndef BU_OPT_PARSER_H
#define BU_OPT_PARSER_H
#include "bu/fstring.h"
#include "bu/list.h"
#include "bu/hash.h"
#include "bu/signals.h"
#include "bu/array.h"
#include "bu/membuf.h"
#include "bu/formatter.h"
namespace Bu
{
typedef Bu::Array<Bu::FString> StrArray;
class OptParser
{
private:
class _ValueProxy
{
public:
_ValueProxy();
virtual ~_ValueProxy();
virtual void setValue( const Bu::FString & )=0;
virtual _ValueProxy *clone()=0;
};
template<typename ptype>
class ValueProxy : public _ValueProxy
{
public:
ValueProxy( ptype &v ) :
v( v )
{
}
virtual ~ValueProxy()
{
}
virtual void setValue( const Bu::FString &sVal )
{
Bu::MemBuf mb( sVal );
Bu::Formatter f( mb );
f >> v;
}
virtual _ValueProxy *clone()
{
return new ValueProxy<ptype>( v );
}
private:
ptype &v;
};
public:
typedef Signal1<int, StrArray> OptionSignal;
class Option
{
public:
Option();
Option( const Option &rSrc );
virtual ~Option();
char cOpt;
Bu::FString sOpt;
Bu::FString sHelp;
OptionSignal sUsed;
bool bShortHasParams;
_ValueProxy *pProxy;
Bu::FString sOverride;
};
private:
typedef Bu::List<Option> OptionList;
typedef Bu::Hash<char, Option *> ShortOptionHash;
typedef Bu::Hash<Bu::FString, Option *> LongOptionHash;
class Banner
{
public:
Bu::FString sText;
bool bFormatted;
OptionList::const_iterator iAfter;
};
typedef Bu::List<Banner> BannerList;
public:
OptParser();
virtual ~OptParser();
void parse( int argc, char **argv );
void addOption( const Option &opt );
template<typename vtype>
void addOption( vtype &var, char cOpt, const Bu::FString &sOpt,
const Bu::FString &sHelp )
{
Option o;
o.cOpt = cOpt;
o.sOpt = sOpt;
o.pProxy = new ValueProxy<vtype>( var );
o.bShortHasParams = true;
o.sHelp = sHelp;
addOption( o );
}
template<typename vtype>
void addOption( vtype &var, const Bu::FString &sOpt,
const Bu::FString &sHelp )
{
addOption( var, '\0', sOpt, sHelp );
}
template<typename vtype>
void addOption( vtype &var, char cOpt, const Bu::FString &sHelp )
{
addOption( var, cOpt, "", sHelp );
}
void addOption( OptionSignal sUsed, char cOpt, const Bu::FString &sOpt,
const Bu::FString &sHelp )
{
Option o;
o.cOpt = cOpt;
o.sOpt = sOpt;
o.sUsed = sUsed;
o.sHelp = sHelp;
addOption( o );
}
void addOption( OptionSignal sUsed, const Bu::FString &sOpt,
const Bu::FString &sHelp )
{
addOption( sUsed, '\0', sOpt, sHelp );
}
void addOption( OptionSignal sUsed, char cOpt,
const Bu::FString &sHelp )
{
addOption( sUsed, cOpt, "", sHelp );
}
void setOverride( char cOpt, const Bu::FString &sOverride );
void setOverride( const Bu::FString &sOpt,
const Bu::FString &sOverride );
// void addOption( char cOpt, const Bu::FString &sOpt,
void addHelpOption( char c='h', const Bu::FString &s="help",
const Bu::FString &sHelp="This help." );
void addHelpBanner( const Bu::FString &sText, bool bFormatted=true );
int optHelp( StrArray aParams );
private:
Bu::FString format( const Bu::FString &sIn, int iWidth, int iIndent );
OptionList lOption;
ShortOptionHash hsOption;
LongOptionHash hlOption;
BannerList lBanner;
};
};
#endif
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