/**
* \file boolean.c
*
* Time-stamp: "2010-07-10 11:02:10 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.
*
* This file is part of AutoOpts, a companion to AutoGen.
* AutoOpts is free software.
* AutoOpts is Copyright (c) 1992-2011 by Bruce Korb - all rights reserved
*
* AutoOpts is available under any one of two licenses. The license
* in use must be one of these two and the choice is under the control
* of the user of the license.
*
* The GNU Lesser General Public License, version 3 or later
* See the files "COPYING.lgplv3" and "COPYING.gplv3"
*
* The Modified Berkeley Software Distribution License
* See the file "COPYING.mbsd"
*
* These files have the following md5sums:
*
* 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3
* 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3
* 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd
*/
/*=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 )
{
char* pz;
ag_bool res = AG_TRUE;
if ((pOD->fOptState & OPTST_RESET) != 0)
return;
if (pOD->optArg.argString == NULL) {
pOD->optArg.argBool = AG_FALSE;
return;
}
switch (*(pOD->optArg.argString)) {
case '0':
{
long val = strtol( pOD->optArg.argString, &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->optArg.argString[1] != 'f')
break;
res = AG_FALSE;
}
if (pOD->fOptState & OPTST_ALLOC_ARG) {
AGFREE(pOD->optArg.argString);
pOD->fOptState &= ~OPTST_ALLOC_ARG;
}
pOD->optArg.argBool = res;
}
/*
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of autoopts/boolean.c */
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