cmdline::CmdLine Class Reference

#include <CmdLine.h>

Public Member Functions
unsigned	argc () const
	CmdLine (const unsigned argc, const char *const argv[])
bool	has (const char *shortOpt, const char *longOpt=nullptr)
	operator void * () const
template<typename T >
CmdLine &	operator>> (T &obj)
void	optend () const
OneShotIStream	option (const char *shortOpt, const char *longOpt=nullptr)
const char *	progname () const
OneShotIStream	require (const char *shortOpt, const char *longOpt=nullptr)

Private Types
typedef std::list< Pair >	Optlist
typedef std::pair< std::string, int >	Pair

Private Member Functions
	CmdLine ()=delete
Optlist::iterator	find (const char *shortOpt, const char *longOpt)

Private Attributes
Optlist	args_
unsigned	nprogargs_
std::string	progname_

Detailed Description

Definition at line 204 of file CmdLine.h.

Member Typedef Documentation

Optlist

typedef std::list<Pair> cmdline::CmdLine::Optlist

private

Definition at line 211 of file CmdLine.h.

Pair

typedef std::pair<std::string, int> cmdline::CmdLine::Pair

private

Definition at line 210 of file CmdLine.h.

Constructor & Destructor Documentation

CmdLine() [1/2]

cmdline::CmdLine::CmdLine ( const unsigned  argc, const char *const  argv[]  )

inline

Definition at line 225 of file CmdLine.h.

                                                                  : nprogargs_(0) {
      // Parse the program name
      const char* progname = std::strrchr(argv[0], '/');
      if (progname)
        ++progname;
      else
        progname = argv[0];
 
      // Take into account program name mangling by GNU autotools
      if (strncmp(progname, "lt-", 3) == 0)
        progname += 3;
      progname_ = progname;
 
      // Make a list of arguments noting on the way if this is
      // a short option, long option, or possible option argument
      bool previousIsOpt = false;
      bool nextIsArg = false;
      for (unsigned i = 1; i < argc; ++i) {
        if (nextIsArg) {
          args_.push_back(Pair(argv[i], previousIsOpt ? 0 : 3));
          previousIsOpt = false;
          ++nprogargs_;
          nextIsArg = false;
        } else if (strcmp(argv[i], "-") == 0)
          nextIsArg = true;
        else if (strcmp(argv[i], "--") == 0) {
          // End of options
          for (unsigned k = i + 1; k < argc; ++k) {
            args_.push_back(Pair(argv[k], 3));
            ++nprogargs_;
          }
          return;
        } else if (strncmp(argv[i], "--", 2) == 0) {
          args_.push_back(Pair(argv[i], 2));
          previousIsOpt = true;
        } else if (argv[i][0] == '-') {
          const unsigned len = strlen(argv[i]);
          for (unsigned k = 1; k < len; ++k) {
            std::string dummy("-");
            dummy += argv[i][k];
            args_.push_back(Pair(dummy, 1));
            previousIsOpt = true;
          }
        } else {
          args_.push_back(Pair(argv[i], previousIsOpt ? 0 : 3));
          previousIsOpt = false;
          ++nprogargs_;
        }
      }
    }

References argc(), args_, cmsBatch::argv, mps_fire::i, dqmdumpme::k, nprogargs_, progname(), progname_, and AlCaHLTBitMon_QueryRunRegistry::string.

CmdLine() [2/2]

cmdline::CmdLine::CmdLine ( )

privatedelete

Member Function Documentation

argc()

unsigned cmdline::CmdLine::argc ( ) const

inline

Definition at line 325 of file CmdLine.h.

{ return nprogargs_; }

References nprogargs_.

Referenced by CmdLine().

find()

Optlist::iterator cmdline::CmdLine::find ( const char *  shortOpt, const char *  longOpt  )

inlineprivate

Definition at line 213 of file CmdLine.h.

                                                                           {
      Optlist::iterator iend = args_.end();
      for (Optlist::iterator it = args_.begin(); it != iend; ++it) {
        if (shortOpt && it->second == 1 && it->first == shortOpt)
          return it;
        if (longOpt && it->second == 2 && it->first == longOpt)
          return it;
      }
      return iend;
    }

References args_.

Referenced by BeautifulSoup.Tag::__getattr__(), BeautifulSoup.Tag::firstText(), has(), and option().

has()

bool cmdline::CmdLine::has ( const char *  shortOpt, const char *  longOpt = nullptr  )

inline

Definition at line 278 of file CmdLine.h.

                                                                         {
      bool found = false;
      for (Optlist::iterator it = find(shortOpt, longOpt); it != args_.end(); it = find(shortOpt, longOpt)) {
        found = true;
        Optlist::iterator it0(it);
        if (++it != args_.end())
          if (it->second == 0)
            it->second = 3;
        args_.erase(it0);
      }
      return found;
    }

References args_, find(), and newFWLiteAna::found.

operator void *()

cmdline::CmdLine::operator void * ( ) const

inline

Definition at line 323 of file CmdLine.h.

{ return (void*)(static_cast<unsigned long>(nprogargs_)); }

References nprogargs_.

operator>>()

template<typename T >

CmdLine& cmdline::CmdLine::operator>> ( T &  obj )

inline

Definition at line 328 of file CmdLine.h.

                                       {
      if (!nprogargs_)
        throw CmdLineError("no more input available on the command line");
      Optlist::iterator it = args_.begin();
      for (; it != args_.end(); ++it)
        if (it->second == 0 || it->second == 3)
          break;
      OneShotIStream is(it->first);
      args_.erase(it);
      --nprogargs_;
      is >> obj;
      return *this;
    }

References args_, nprogargs_, and getGTfromDQMFile::obj.

optend()

void cmdline::CmdLine::optend ( ) const

inline

Definition at line 317 of file CmdLine.h.

                               {
      for (Optlist::const_iterator it = args_.begin(); it != args_.end(); ++it)
        if (it->second == 1 || it->second == 2)
          throw CmdLineError("invalid command line option \"") << it->first << '"';
    }

References args_.

option()

OneShotIStream cmdline::CmdLine::option ( const char *  shortOpt, const char *  longOpt = nullptr  )

inline

Definition at line 291 of file CmdLine.h.

                                                                                      {
      OneShotIStream result;
      for (Optlist::iterator it = find(shortOpt, longOpt); it != args_.end(); it = find(shortOpt, longOpt)) {
        Optlist::iterator it0(it);
        if (++it != args_.end())
          if (it->second == 0) {
            result = OneShotIStream(it->first);
            args_.erase(it0, ++it);
            --nprogargs_;
            continue;
          }
        throw CmdLineError() << "missing command line argument for option \"" << it0->first << '"';
      }
      return result;
    }

References args_, find(), nprogargs_, and mps_fire::result.

Referenced by require().

progname()

const char* cmdline::CmdLine::progname ( ) const

inline

Definition at line 276 of file CmdLine.h.

{ return progname_.c_str(); }

References progname_.

Referenced by CmdLine().

require()

OneShotIStream cmdline::CmdLine::require ( const char *  shortOpt, const char *  longOpt = nullptr  )

inline

Definition at line 307 of file CmdLine.h.

                                                                                       {
      const OneShotIStream& is(option(shortOpt, longOpt));
      if (!is.isValid()) {
        const char empty[] = "";
        const char* s = shortOpt ? shortOpt : (longOpt ? longOpt : empty);
        throw CmdLineError() << "required command line option \"" << s << "\" is missing";
      }
      return is;
    }

References relativeConstraints::empty, cmdline::OneShotIStream::isValid(), option(), and alignCSCRings::s.

Member Data Documentation

args_

Optlist cmdline::CmdLine::args_

private

Definition at line 346 of file CmdLine.h.

Referenced by CmdLine(), find(), has(), operator>>(), optend(), option(), valtools.webpage::parseArgs(), and batchmanager.BatchManager::ParseOptions().

nprogargs_

unsigned cmdline::CmdLine::nprogargs_

private

Definition at line 347 of file CmdLine.h.

Referenced by argc(), CmdLine(), operator void *(), operator>>(), and option().

progname_

std::string cmdline::CmdLine::progname_

private

Definition at line 345 of file CmdLine.h.

Referenced by CmdLine(), and progname().