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Diffstat (limited to 'sntp/libopts/numeric.c')
-rw-r--r-- | sntp/libopts/numeric.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/sntp/libopts/numeric.c b/sntp/libopts/numeric.c new file mode 100644 index 0000000..9baba65 --- /dev/null +++ b/sntp/libopts/numeric.c @@ -0,0 +1,179 @@ + +/** + * \file numeric.c + * + * Handle options with numeric (integer) arguments. + * + * @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 + */ + +/*=export_func optionShowRange + * private: + * + * what: Show info about range constraints + * arg: + tOptions* + pOpts + program options descriptor + + * arg: + tOptDesc* + pOptDesc + the descriptor for this arg + + * arg: + void * + rng_table + the value range tables + + * arg: + int + rng_count + the number of entries + + * + * doc: + * Show information about a numeric option with range constraints. +=*/ +void +optionShowRange(tOptions * pOpts, tOptDesc * pOD, void * rng_table, int rng_ct) +{ + const struct {long const rmin, rmax;} * rng = rng_table; + + char const * pz_indent = zTabHyp + tab_skip_ct; + + /* + * The range is shown only for full usage requests and an error + * in this particular option. + */ + if (pOpts != OPTPROC_EMIT_USAGE) { + if (pOpts <= OPTPROC_EMIT_LIMIT) + return; + pz_indent = ONE_TAB_STR; + + fprintf(option_usage_fp, zRangeErr, pOpts->pzProgName, + pOD->pz_Name, pOD->optArg.argInt); + pz_indent = ""; + } + + if (pOD->fOptState & OPTST_SCALED_NUM) + fprintf(option_usage_fp, zRangeScaled, pz_indent); + + fprintf(option_usage_fp, (rng_ct > 1) ? zRangeLie : zRangeOnly, pz_indent); + pz_indent = (pOpts != OPTPROC_EMIT_USAGE) + ? ONE_TAB_STR + : (zTabSpace + tab_skip_ct); + + for (;;) { + if (rng->rmax == LONG_MIN) + fprintf(option_usage_fp, zRangeExact, pz_indent, rng->rmin); + else if (rng->rmin == LONG_MIN) + fprintf(option_usage_fp, zRangeUpto, pz_indent, rng->rmax); + else if (rng->rmax == LONG_MAX) + fprintf(option_usage_fp, zRangeAbove, pz_indent, rng->rmin); + else + fprintf(option_usage_fp, zRange, pz_indent, rng->rmin, + rng->rmax); + + if (--rng_ct <= 0) { + fputc(NL, option_usage_fp); + break; + } + fputs(zRangeOr, option_usage_fp); + rng++; + } + + if (pOpts > OPTPROC_EMIT_LIMIT) + pOpts->pUsageProc(pOpts, EXIT_FAILURE); +} + +/*=export_func optionNumericVal + * private: + * + * what: process an option with a numeric value. + * arg: + tOptions* + opts + program options descriptor + + * arg: + tOptDesc* + od + the descriptor for this arg + + * + * doc: + * Decipher a numeric value. +=*/ +void +optionNumericVal(tOptions * opts, tOptDesc * od) +{ + char* pz; + long val; + + /* + * Guard against all the different ways this procedure might get invoked + * when there is no string argument provided. + */ + if (INQUERY_CALL(opts, od) || (od->optArg.argString == NULL)) + return; + + /* + * Numeric options may have a range associated with it. + * If it does, the usage procedure requests that it be + * emitted by passing a NULL od pointer. Also bail out + * if there is no option argument or if we are being reset. + */ + if ( (od == NULL) + || (od->optArg.argString == NULL) + || ((od->fOptState & OPTST_RESET) != 0)) + return; + + errno = 0; + val = strtol(od->optArg.argString, &pz, 0); + if ((pz == od->optArg.argString) || (errno != 0)) + goto bad_number; + + if ((od->fOptState & OPTST_SCALED_NUM) != 0) + switch (*(pz++)) { + case NUL: pz--; break; + case 't': val *= 1000; + case 'g': val *= 1000; + case 'm': val *= 1000; + case 'k': val *= 1000; break; + + case 'T': val *= 1024; + case 'G': val *= 1024; + case 'M': val *= 1024; + case 'K': val *= 1024; break; + + default: goto bad_number; + } + + if (*pz != NUL) + goto bad_number; + + if (od->fOptState & OPTST_ALLOC_ARG) { + AGFREE(od->optArg.argString); + od->fOptState &= ~OPTST_ALLOC_ARG; + } + + od->optArg.argInt = val; + return; + + bad_number: + + fprintf( stderr, zNotNumber, opts->pzProgName, od->optArg.argString ); + if ((opts->fOptSet & OPTPROC_ERRSTOP) != 0) + (*(opts->pUsageProc))(opts, EXIT_FAILURE); + + errno = EINVAL; + od->optArg.argInt = ~0; +} + +/** @} + * + * Local Variables: + * mode: C + * c-file-style: "stroustrup" + * indent-tabs-mode: nil + * End: + * end of autoopts/numeric.c */ |