diff options
Diffstat (limited to 'sntp/libopts/reset.c')
-rw-r--r-- | sntp/libopts/reset.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/sntp/libopts/reset.c b/sntp/libopts/reset.c new file mode 100644 index 0000000..df81cd7 --- /dev/null +++ b/sntp/libopts/reset.c @@ -0,0 +1,141 @@ + +/** + * \file reset.c + * + * Reset the option state to the compiled state. + * + * @addtogroup autoopts + * @{ + */ +/* + * This file is part of AutoOpts, a companion to AutoGen. + * AutoOpts is free software. + * AutoOpts is Copyright (C) 1992-2014 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 sha256 sums: + * + * 8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95 COPYING.gplv3 + * 4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b COPYING.lgplv3 + * 13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239 COPYING.mbsd + */ + +static void +optionReset( tOptions* pOpts, tOptDesc* pOD ) +{ + pOD->fOptState &= OPTST_PERSISTENT_MASK; + pOD->fOptState |= OPTST_RESET; + if (pOD->pOptProc != NULL) + pOD->pOptProc(pOpts, pOD); + pOD->optArg.argString = + pOpts->originalOptArgArray[ pOD->optIndex ].argString; + pOD->optCookie = pOpts->originalOptArgCookie[ pOD->optIndex ]; + pOD->fOptState &= OPTST_PERSISTENT_MASK; +} + + +static void +optionResetEverything(tOptions * pOpts) +{ + tOptDesc * pOD = pOpts->pOptDesc; + int ct = pOpts->presetOptCt; + + for (;;) { + optionReset(pOpts, pOD); + + if (--ct <= 0) + break; + pOD++; + } +} + + +/*=export_func optionResetOpt + * private: + * + * what: Reset the value of an option + * arg: + tOptions* + pOpts + program options descriptor + + * arg: + tOptDesc* + pOptDesc + the descriptor for this arg + + * + * doc: + * This code will cause another option to be reset to its initial state. + * For example, --reset=foo will cause the --foo option to be reset. +=*/ +void +optionResetOpt(tOptions * pOpts, tOptDesc * pOD) +{ + static bool reset_active = false; + + tOptState opt_state = OPTSTATE_INITIALIZER(DEFINED); + char const * pzArg = pOD->optArg.argString; + tSuccess succ; + + if (pOpts <= OPTPROC_EMIT_LIMIT) + return; + + if (reset_active) + return; + + if ( (! HAS_originalOptArgArray(pOpts)) + || (pOpts->originalOptArgCookie == NULL)) + ao_bug(zno_reset); + + if ((pzArg == NULL) || (*pzArg == NUL)) { + fprintf(stderr, zreset_arg, pOpts->pzProgName, pOD->pz_Name); + pOpts->pUsageProc(pOpts, EXIT_FAILURE); + /* NOTREACHED */ + assert(0 == 1); + } + + reset_active = true; + + if (pzArg[1] == NUL) { + if (*pzArg == '*') { + optionResetEverything(pOpts); + reset_active = false; + return; + } + + succ = opt_find_short(pOpts, (uint8_t)*pzArg, &opt_state); + if (! SUCCESSFUL(succ)) { + fprintf(stderr, zIllOptChr, pOpts->pzProgPath, *pzArg); + pOpts->pUsageProc(pOpts, EXIT_FAILURE); + /* NOTREACHED */ + assert(0 == 1); + } + } else { + succ = opt_find_long(pOpts, (char *)pzArg, &opt_state); + if (! SUCCESSFUL(succ)) { + fprintf(stderr, zIllOptStr, pOpts->pzProgPath, pzArg); + pOpts->pUsageProc(pOpts, EXIT_FAILURE); + /* NOTREACHED */ + assert(0 == 1); + } + } + + /* + * We've found the indicated option. Turn off all non-persistent + * flags because we're forcing the option back to its initialized state. + * Call any callout procedure to handle whatever it needs to. + * Finally, clear the reset flag, too. + */ + optionReset(pOpts, opt_state.pOD); + reset_active = false; +} +/** @} + * + * Local Variables: + * mode: C + * c-file-style: "stroustrup" + * indent-tabs-mode: nil + * End: + * end of autoopts/reset.c */ |