/* * $Id: boolean.c,v 4.5 2006/03/25 19:24:56 bkorb Exp $ * Time-stamp: "2005-02-14 08:24:12 bkorb" * * Automated Options Paged Usage module. * * This routine will run run-on options through a pager so the * user may examine, print or edit them at their leisure. */ /* * Automated Options copyright 1992-2006 Bruce Korb * * Automated Options is free software. * You may redistribute it and/or modify it under the terms of the * GNU General Public License, as published by the Free Software * Foundation; either version 2, or (at your option) any later version. * * Automated Options is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Automated Options. See the file "COPYING". If not, * write to: The Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * * As a special exception, Bruce Korb gives permission for additional * uses of the text contained in his release of AutoOpts. * * The exception is that, if you link the AutoOpts library with other * files to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the AutoOpts library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by Bruce Korb under * the name AutoOpts. If you copy code from other sources under the * General Public License into a copy of AutoOpts, as the General Public * License permits, the exception does not apply to the code that you add * in this way. To avoid misleading anyone as to the status of such * modified files, you must delete this exception notice from them. * * If you write modifications of your own for AutoOpts, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. */ /*=export_func optionBooleanVal * private: * * what: Decipher a boolean value * arg: + tOptions* + pOpts + program options descriptor + * arg: + tOptDesc* + pOptDesc + the descriptor for this arg + * * doc: * Decipher a true or false value for a boolean valued option argument. * The value is true, unless it starts with 'n' or 'f' or "#f" or * it is an empty string or it is a number that evaluates to zero. =*/ void optionBooleanVal( tOptions* pOpts, tOptDesc* pOD ) { long val; char* pz; ag_bool res = AG_TRUE; switch (*(pOD->pzLastArg)) { case '0': val = strtol( pOD->pzLastArg, &pz, 0 ); if ((val != 0) || (*pz != NUL)) break; /* FALLTHROUGH */ case 'N': case 'n': case 'F': case 'f': case NUL: res = AG_FALSE; break; case '#': if (pOD->pzLastArg[1] != 'f') break; res = AG_FALSE; } pOD->pzLastArg = (char*)res; } /* * Local Variables: * mode: C * c-file-style: "stroustrup" * tab-width: 4 * indent-tabs-mode: nil * End: * end of autoopts/boolean.c */