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ntp 4.2.6p5

    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 */