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Diffstat (limited to 'tclap-1.2.1/include/tclap/SwitchArg.h')
| -rw-r--r-- | tclap-1.2.1/include/tclap/SwitchArg.h | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/tclap-1.2.1/include/tclap/SwitchArg.h b/tclap-1.2.1/include/tclap/SwitchArg.h new file mode 100644 index 0000000..3916109 --- /dev/null +++ b/tclap-1.2.1/include/tclap/SwitchArg.h @@ -0,0 +1,266 @@ + +/****************************************************************************** + * + * 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 |