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Diffstat (limited to 'autoopts/boolean.c')
-rw-r--r-- | autoopts/boolean.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/autoopts/boolean.c b/autoopts/boolean.c new file mode 100644 index 0000000..c463778 --- /dev/null +++ b/autoopts/boolean.c @@ -0,0 +1,97 @@ + +/** + * \file boolean.c + * + * Time-stamp: "2012-08-11 08:34:39 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) 1992-2012 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; + bool res = true; + + (void)pOpts; + + if (pOpts <= OPTPROC_EMIT_LIMIT) + return; + + if ((pOD->fOptState & OPTST_RESET) != 0) + return; + + if (pOD->optArg.argString == NULL) { + pOD->optArg.argBool = 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 = false; + break; + case '#': + if (pOD->optArg.argString[1] != 'f') + break; + res = 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 */ |