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Diffstat (limited to 'autoopts/numeric.c')
| -rw-r--r-- | autoopts/numeric.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/autoopts/numeric.c b/autoopts/numeric.c new file mode 100644 index 0000000..b709d07 --- /dev/null +++ b/autoopts/numeric.c @@ -0,0 +1,165 @@ + +/** + * \file numeric.c + * + * Time-stamp: "2012-02-25 12:54:32 bkorb" + * + * 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 optionShowRange + * private: + * + * what: + * 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 = BULLET_STR; + + /* + * 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 : DEEP_INDENT_STR; + + 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* + pOpts + program options descriptor + + * arg: + tOptDesc* + pOptDesc + the descriptor for this arg + + * + * doc: + * Decipher a numeric value. +=*/ +void +optionNumericVal(tOptions* pOpts, tOptDesc* pOD ) +{ + char* pz; + long val; + + /* + * Numeric options may have a range associated with it. + * If it does, the usage procedure requests that it be + * emitted by passing a NULL pOD pointer. Also bail out + * if there is no option argument or if we are being reset. + */ + if ( (pOD == NULL) + || (pOD->optArg.argString == NULL) + || ((pOD->fOptState & OPTST_RESET) != 0)) + return; + + errno = 0; + val = strtol(pOD->optArg.argString, &pz, 0); + if ((pz == pOD->optArg.argString) || (errno != 0)) + goto bad_number; + + if ((pOD->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 (pOD->fOptState & OPTST_ALLOC_ARG) { + AGFREE(pOD->optArg.argString); + pOD->fOptState &= ~OPTST_ALLOC_ARG; + } + + pOD->optArg.argInt = val; + return; + + bad_number: + + fprintf( stderr, zNotNumber, pOpts->pzProgName, pOD->optArg.argString ); + if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) + (*(pOpts->pUsageProc))(pOpts, EXIT_FAILURE); + + errno = EINVAL; + pOD->optArg.argInt = ~0; +} + +/* + * Local Variables: + * mode: C + * c-file-style: "stroustrup" + * indent-tabs-mode: nil + * End: + * end of autoopts/numeric.c */ |