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Annotation of embedaddon/ntp/sntp/libopts/reset.c, revision 1.1.1.1

1.1       misho       1: 
                      2: /**
                      3:  * \file reset.c
                      4:  *
                      5:  *  Time-stamp:      "2010-07-10 10:56:34 bkorb"
                      6:  *
                      7:  *  This file is part of AutoOpts, a companion to AutoGen.
                      8:  *  AutoOpts is free software.
                      9:  *  AutoOpts is Copyright (c) 1992-2011 by Bruce Korb - all rights reserved
                     10:  *
                     11:  *  AutoOpts is available under any one of two licenses.  The license
                     12:  *  in use must be one of these two and the choice is under the control
                     13:  *  of the user of the license.
                     14:  *
                     15:  *   The GNU Lesser General Public License, version 3 or later
                     16:  *      See the files "COPYING.lgplv3" and "COPYING.gplv3"
                     17:  *
                     18:  *   The Modified Berkeley Software Distribution License
                     19:  *      See the file "COPYING.mbsd"
                     20:  *
                     21:  *  These files have the following md5sums:
                     22:  *
                     23:  *  43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3
                     24:  *  06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3
                     25:  *  66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd
                     26:  */
                     27: 
                     28: static void
                     29: optionReset( tOptions* pOpts, tOptDesc* pOD )
                     30: {
                     31:     pOD->fOptState &= OPTST_PERSISTENT_MASK;
                     32:     pOD->fOptState |= OPTST_RESET;
                     33:     if (pOD->pOptProc != NULL)
                     34:         pOD->pOptProc(pOpts, pOD);
                     35:     pOD->optArg.argString =
                     36:         pOpts->originalOptArgArray[ pOD->optIndex ].argString;
                     37:     pOD->optCookie = pOpts->originalOptArgCookie[ pOD->optIndex ];
                     38:     pOD->fOptState &= OPTST_PERSISTENT_MASK;
                     39: }
                     40: 
                     41: 
                     42: static void
                     43: optionResetEverything(tOptions * pOpts)
                     44: {
                     45:     tOptDesc * pOD = pOpts->pOptDesc;
                     46:     int        ct  = pOpts->presetOptCt;
                     47: 
                     48:     for (;;) {
                     49:         optionReset(pOpts, pOD);
                     50: 
                     51:         if (--ct <= 0)
                     52:             break;
                     53:         pOD++;
                     54:     }
                     55: }
                     56: 
                     57: 
                     58: /*=export_func  optionResetOpt
                     59:  * private:
                     60:  *
                     61:  * what:  Reset the value of an option
                     62:  * arg:   + tOptions* + pOpts    + program options descriptor  +
                     63:  * arg:   + tOptDesc* + pOptDesc + the descriptor for this arg +
                     64:  *
                     65:  * doc:
                     66:  *  This code will cause another option to be reset to its initial state.
                     67:  *  For example, --reset=foo will cause the --foo option to be reset.
                     68: =*/
                     69: void
                     70: optionResetOpt( tOptions* pOpts, tOptDesc* pOD )
                     71: {
                     72:     static ag_bool reset_active = AG_FALSE;
                     73: 
                     74:     tOptState opt_state = OPTSTATE_INITIALIZER(DEFINED);
                     75:     char const * pzArg = pOD->optArg.argString;
                     76:     tSuccess     succ;
                     77: 
                     78:     if (reset_active)
                     79:         return;
                     80: 
                     81:     if (  (! HAS_originalOptArgArray(pOpts))
                     82:        || (pOpts->originalOptArgCookie == NULL)) {
                     83:         fputs(zResetNotConfig, stderr);
                     84:         _exit(EX_SOFTWARE);
                     85:     }
                     86: 
                     87:     if ((pzArg == NULL) || (*pzArg == NUL)) {
                     88:         fputs(zNoResetArg, stderr);
                     89:         pOpts->pUsageProc(pOpts, EXIT_FAILURE);
                     90:         /* NOTREACHED */
                     91:         assert(0 == 1);
                     92:     }
                     93: 
                     94:     reset_active = AG_TRUE;
                     95: 
                     96:     if (pzArg[1] == NUL) {
                     97:         if (*pzArg == '*') {
                     98:             optionResetEverything(pOpts);
                     99:             reset_active = AG_FALSE;
                    100:             return;
                    101:         }
                    102: 
                    103:         succ = shortOptionFind(pOpts, (tAoUC)*pzArg, &opt_state);
                    104:         if (! SUCCESSFUL(succ)) {
                    105:             fprintf(stderr, zIllOptChr, pOpts->pzProgPath, *pzArg);
                    106:             pOpts->pUsageProc(pOpts, EXIT_FAILURE);
                    107:             /* NOTREACHED */
                    108:             assert(0 == 1);
                    109:         }
                    110:     } else {
                    111:         succ = longOptionFind(pOpts, (char *)pzArg, &opt_state);
                    112:         if (! SUCCESSFUL(succ)) {
                    113:             fprintf(stderr, zIllOptStr, pOpts->pzProgPath, pzArg);
                    114:             pOpts->pUsageProc(pOpts, EXIT_FAILURE);
                    115:             /* NOTREACHED */
                    116:             assert(0 == 1);
                    117:         }
                    118:     }
                    119: 
                    120:     /*
                    121:      *  We've found the indicated option.  Turn off all non-persistent
                    122:      *  flags because we're forcing the option back to its initialized state.
                    123:      *  Call any callout procedure to handle whatever it needs to.
                    124:      *  Finally, clear the reset flag, too.
                    125:      */
                    126:     optionReset(pOpts, opt_state.pOD);
                    127:     reset_active = AG_FALSE;
                    128: }
                    129: /*
                    130:  * Local Variables:
                    131:  * mode: C
                    132:  * c-file-style: "stroustrup"
                    133:  * indent-tabs-mode: nil
                    134:  * End:
                    135:  * end of autoopts/reset.c */