core-packer/tclap/SwitchArg.h
/******************************************************************************
*
* file: SwitchArg.h
*
* Copyright (c) 2003, Michael E. Smoot .
* Copyright (c) 2004, Michael E. Smoot, Daniel Aarno.
* All rights reverved.
*
* See the file COPYING in the top directory of this distribution for
* more information.
*
* THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*****************************************************************************/
#ifndef TCLAP_SWITCH_ARG_H
#define TCLAP_SWITCH_ARG_H
#include <string>
#include <vector>
#include <tclap/Arg.h>
namespace TCLAP {
/**
* A simple switch argument. If the switch is set on the command line, then
* the getValue method will return the opposite of the default value for the
* switch.
*/
class SwitchArg : public Arg
{
protected:
/**
* The value of the switch.
*/
bool _value;
/**
* Used to support the reset() method so that ValueArg can be
* reset to their constructed value.
*/
bool _default;
public:
/**
* SwitchArg constructor.
* \param flag - The one character flag that identifies this
* argument on the command line.
* \param name - A one word name for the argument. Can be
* used as a long flag on the command line.
* \param desc - A description of what the argument is for or
* does.
* \param def - The default value for this Switch.
* \param v - An optional visitor. You probably should not
* use this unless you have a very good reason.
*/
SwitchArg(const std::string& flag,
const std::string& name,
const std::string& desc,
bool def = false,
Visitor* v = NULL);
/**
* SwitchArg constructor.
* \param flag - The one character flag that identifies this
* argument on the command line.
* \param name - A one word name for the argument. Can be
* used as a long flag on the command line.
* \param desc - A description of what the argument is for or
* does.
* \param parser - A CmdLine parser object to add this Arg to
* \param def - The default value for this Switch.
* \param v - An optional visitor. You probably should not
* use this unless you have a very good reason.
*/
SwitchArg(const std::string& flag,
const std::string& name,
const std::string& desc,
CmdLineInterface& parser,
bool def = false,
Visitor* v = NULL);
/**
* Handles the processing of the argument.
* This re-implements the Arg version of this method to set the
* _value of the argument appropriately.
* \param i - Pointer the the current argument in the list.
* \param args - Mutable list of strings. Passed
* in from main().
*/
virtual bool processArg(int* i, std::vector<std::string>& args);
/**
* Checks a string to see if any of the chars in the string
* match the flag for this Switch.
*/
bool combinedSwitchesMatch(std::string& combined);
/**
* Returns bool, whether or not the switch has been set.
*/
bool getValue();
virtual void reset();
private:
/**
* Checks to see if we've found the last match in
* a combined string.
*/
bool lastCombined(std::string& combined);
/**
* Does the common processing of processArg.
*/
void commonProcessing();
};
//////////////////////////////////////////////////////////////////////
//BEGIN SwitchArg.cpp
//////////////////////////////////////////////////////////////////////
inline SwitchArg::SwitchArg(const std::string& flag,
const std::string& name,
const std::string& desc,
bool default_val,
Visitor* v )
: Arg(flag, name, desc, false, false, v),
_value( default_val ),
_default( default_val )
{ }
inline SwitchArg::SwitchArg(const std::string& flag,
const std::string& name,
const std::string& desc,
CmdLineInterface& parser,
bool default_val,
Visitor* v )
: Arg(flag, name, desc, false, false, v),
_value( default_val ),
_default(default_val)
{
parser.add( this );
}
inline bool SwitchArg::getValue() { return _value; }
inline bool SwitchArg::lastCombined(std::string& combinedSwitches )
{
for ( unsigned int i = 1; i < combinedSwitches.length(); i++ )
if ( combinedSwitches[i] != Arg::blankChar() )
return false;
return true;
}
inline bool SwitchArg::combinedSwitchesMatch(std::string& combinedSwitches )
{
// make sure this is actually a combined switch
if ( combinedSwitches.length() > 0 &&
combinedSwitches[0] != Arg::flagStartString()[0] )
return false;
// make sure it isn't a long name
if ( combinedSwitches.substr( 0, Arg::nameStartString().length() ) ==
Arg::nameStartString() )
return false;
// make sure the delimiter isn't in the string
if ( combinedSwitches.find_first_of( Arg::delimiter() ) != std::string::npos )
return false;
// ok, we're not specifying a ValueArg, so we know that we have
// a combined switch list.
for ( unsigned int i = 1; i < combinedSwitches.length(); i++ )
if ( _flag.length() > 0 &&
combinedSwitches[i] == _flag[0] &&
_flag[0] != Arg::flagStartString()[0] )
{
// update the combined switches so this one is no longer present
// this is necessary so that no unlabeled args are matched
// later in the processing.
//combinedSwitches.erase(i,1);
combinedSwitches[i] = Arg::blankChar();
return true;
}
// none of the switches passed in the list match.
return false;
}
inline void SwitchArg::commonProcessing()
{
if ( _xorSet )
throw(CmdLineParseException(
"Mutually exclusive argument already set!", toString()));
if ( _alreadySet )
throw(CmdLineParseException("Argument already set!", toString()));
_alreadySet = true;
if ( _value == true )
_value = false;
else
_value = true;
_checkWithVisitor();
}
inline bool SwitchArg::processArg(int *i, std::vector<std::string>& args)
{
if ( _ignoreable && Arg::ignoreRest() )
return false;
// if the whole string matches the flag or name string
if ( argMatches( args[*i] ) )
{
commonProcessing();
return true;
}
// if a substring matches the flag as part of a combination
else if ( combinedSwitchesMatch( args[*i] ) )
{
// check again to ensure we don't misinterpret
// this as a MultiSwitchArg
if ( combinedSwitchesMatch( args[*i] ) )
throw(CmdLineParseException("Argument already set!",
toString()));
commonProcessing();
// We only want to return true if we've found the last combined
// match in the string, otherwise we return true so that other
// switches in the combination will have a chance to match.
return lastCombined( args[*i] );
}
else
return false;
}
inline void SwitchArg::reset()
{
Arg::reset();
_value = _default;
}
//////////////////////////////////////////////////////////////////////
//End SwitchArg.cpp
//////////////////////////////////////////////////////////////////////
} //namespace TCLAP
#endif