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Diffstat (limited to 'libopts/putshell.c')
| -rw-r--r-- | libopts/putshell.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/libopts/putshell.c b/libopts/putshell.c new file mode 100644 index 0000000000..f15284f6b9 --- /dev/null +++ b/libopts/putshell.c @@ -0,0 +1,372 @@ + +/** + * \file putshell.c + * + * Time-stamp: "2010-09-05 06:10:56 bkorb" + * + * This module will interpret the options set in the tOptions + * structure and print them to standard out in a fashion that + * will allow them to be interpreted by the Bourne or Korn shells. + * + * This file is part of AutoOpts, a companion to AutoGen. + * AutoOpts is free software. + * AutoOpts is Copyright (c) 1992-2011 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 + */ +static char const zOptValFmt[] = "%s_%s="; +static char const zOptEnd[] = "\nexport %s_%s\n"; +static char const zOptNumFmt[] = "%1$s_%2$s=%3$d # 0x%3$X\nexport %1$s_%2$s\n"; + +/* = = = START-STATIC-FORWARD = = = */ +static void +print_quot_str(tCC* pzStr); + +static void +print_enumeration(tOptions * pOpts, tOptDesc * pOD); + +static void +print_membership(tOptions * pOpts, tOptDesc * pOD); + +static void +print_stacked_arg(tOptions * pOpts, tOptDesc * pOD); + +static void +print_reordering(tOptions * pOpts); +/* = = = END-STATIC-FORWARD = = = */ + +/* + * Make sure embedded single quotes come out okay. The initial quote has + * been emitted and the closing quote will be upon return. + */ +static void +print_quot_str(tCC* pzStr) +{ + /* + * Handle empty strings to make the rest of the logic simpler. + */ + if ((pzStr == NULL) || (*pzStr == NUL)) { + fputs("''", stdout); + return; + } + + /* + * Emit any single quotes/apostrophes at the start of the string and + * bail if that is all we need to do. + */ + while (*pzStr == '\'') { + fputs("\\'", stdout); + pzStr++; + } + if (*pzStr == NUL) + return; + + /* + * Start the single quote string + */ + fputc('\'', stdout); + for (;;) { + tCC* pz = strchr(pzStr, '\''); + if (pz == NULL) + break; + + /* + * Emit the string up to the single quote (apostrophe) we just found. + */ + (void)fwrite(pzStr, (size_t)(pz - pzStr), (size_t)1, stdout); + fputc('\'', stdout); + pzStr = pz; + + /* + * Emit an escaped apostrophe for every one we find. + * If that ends the string, do not re-open the single quotes. + */ + while (*++pzStr == '\'') fputs("\\'", stdout); + if (*pzStr == NUL) + return; + + fputc('\'', stdout); + } + + /* + * If we broke out of the loop, we must still emit the remaining text + * and then close the single quote string. + */ + fputs(pzStr, stdout); + fputc('\'', stdout); +} + +static void +print_enumeration(tOptions * pOpts, tOptDesc * pOD) +{ + uintptr_t e_val = pOD->optArg.argEnum; + printf(zOptValFmt, pOpts->pzPROGNAME, pOD->pz_NAME); + + /* + * Convert value to string, print that and restore numeric value. + */ + (*(pOD->pOptProc))(OPTPROC_RETURN_VALNAME, pOD); + printf("'%s'", pOD->optArg.argString); + if (pOD->fOptState & OPTST_ALLOC_ARG) + AGFREE(pOD->optArg.argString); + pOD->optArg.argEnum = e_val; + + printf(zOptEnd, pOpts->pzPROGNAME, pOD->pz_NAME); +} + +static void +print_membership(tOptions * pOpts, tOptDesc * pOD) +{ + char const * pz; + uintptr_t val = 1; + printf(zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME, + (int)(uintptr_t)(pOD->optCookie)); + pOD->optCookie = (void*)(uintptr_t)~0UL; + (*(pOD->pOptProc))(OPTPROC_RETURN_VALNAME, pOD); + + /* + * We are building the typeset list. The list returned starts with + * 'none + ' for use by option saving stuff. We must ignore that. + */ + pz = pOD->optArg.argString + 7; + while (*pz != NUL) { + printf("typeset -x -i %s_", pOD->pz_NAME); + while (IS_PLUS_N_SPACE_CHAR(*pz)) pz++; + + for (;;) { + int ch = *(pz++); + if (IS_LOWER_CASE_CHAR(ch)) fputc(toupper(ch), stdout); + else if (IS_UPPER_CASE_CHAR(ch)) fputc(ch, stdout); + else if (IS_PLUS_N_SPACE_CHAR(ch)) goto name_done; + else if (ch == NUL) { pz--; goto name_done; } + else fputc('_', stdout); + } name_done:; + printf("=%1$lu # 0x%1$lX\n", (unsigned long)val); + val <<= 1; + } + + AGFREE(pOD->optArg.argString); + pOD->optArg.argString = NULL; + pOD->fOptState &= ~OPTST_ALLOC_ARG; +} + +static void +print_stacked_arg(tOptions * pOpts, tOptDesc * pOD) +{ + tSCC zOptCookieCt[] = "%1$s_%2$s_CT=%3$d\nexport %1$s_%2$s_CT\n"; + + tArgList* pAL = (tArgList*)pOD->optCookie; + tCC** ppz = pAL->apzArgs; + int ct = pAL->useCt; + + printf(zOptCookieCt, pOpts->pzPROGNAME, pOD->pz_NAME, ct); + + while (--ct >= 0) { + tSCC numarg_z[] = "%s_%s_%d="; + tSCC end_z[] = "\nexport %s_%s_%d\n"; + + printf(numarg_z, pOpts->pzPROGNAME, pOD->pz_NAME, + pAL->useCt - ct); + print_quot_str(*(ppz++)); + printf(end_z, pOpts->pzPROGNAME, pOD->pz_NAME, + pAL->useCt - ct); + } +} + +static void +print_reordering(tOptions * pOpts) +{ + int optIx; + + fputs("set --", stdout); + + for (optIx = pOpts->curOptIdx; optIx < pOpts->origArgCt; optIx++) { + + char* pzArg = pOpts->origArgVect[ optIx ]; + + if (strchr(pzArg, '\'') == NULL) + printf(" '%s'", pzArg); + + else { + fputs(" '", stdout); + for (;;) { + char ch = *(pzArg++); + switch (ch) { + case '\'': fputs("'\\''", stdout); break; + case NUL: goto arg_done; + default: fputc(ch, stdout); break; + } + } arg_done:; + fputc('\'', stdout); + } + } + fputs("\nOPTION_CT=0\n", stdout); +} + +/*=export_func optionPutShell + * what: write a portable shell script to parse options + * private: + * arg: tOptions*, pOpts, the program options descriptor + * doc: This routine will emit portable shell script text for parsing + * the options described in the option definitions. +=*/ +void +optionPutShell(tOptions* pOpts) +{ + int optIx = 0; + tSCC zOptCtFmt[] = "OPTION_CT=%d\nexport OPTION_CT\n"; + tSCC zOptDisabl[] = "%1$s_%2$s=%3$s\nexport %1$s_%2$s\n"; + tSCC zFullOptFmt[]= "%1$s_%2$s='%3$s'\nexport %1$s_%2$s\n"; + tSCC zEquivMode[] = "%1$s_%2$s_MODE='%3$s'\nexport %1$s_%2$s_MODE\n"; + + printf(zOptCtFmt, pOpts->curOptIdx-1); + + do { + tOptDesc* pOD = pOpts->pOptDesc + optIx; + + if (SKIP_OPT(pOD)) + continue; + + /* + * Equivalence classes are hard to deal with. Where the + * option data wind up kind of squishes around. For the purposes + * of emitting shell state, they are not recommended, but we'll + * do something. I guess we'll emit the equivalenced-to option + * at the point in time when the base option is found. + */ + if (pOD->optEquivIndex != NO_EQUIVALENT) + continue; /* equivalence to a different option */ + + /* + * Equivalenced to a different option. Process the current option + * as the equivalenced-to option. Keep the persistent state bits, + * but copy over the set-state bits. + */ + if (pOD->optActualIndex != optIx) { + tOptDesc* p = pOpts->pOptDesc + pOD->optActualIndex; + p->optArg = pOD->optArg; + p->fOptState &= OPTST_PERSISTENT_MASK; + p->fOptState |= pOD->fOptState & ~OPTST_PERSISTENT_MASK; + printf(zEquivMode, pOpts->pzPROGNAME, pOD->pz_NAME, p->pz_NAME); + pOD = p; + } + + /* + * If the argument type is a set membership bitmask, then we always + * emit the thing. We do this because it will always have some sort + * of bitmask value and we need to emit the bit values. + */ + if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_MEMBERSHIP) { + print_membership(pOpts, pOD); + continue; + } + + /* + * IF the option was either specified or it wakes up enabled, + * then we will emit information. Otherwise, skip it. + * The idea is that if someone defines an option to initialize + * enabled, we should tell our shell script that it is enabled. + */ + if (UNUSED_OPT(pOD) && DISABLED_OPT(pOD)) { + continue; + } + + /* + * Handle stacked arguments + */ + if ( (pOD->fOptState & OPTST_STACKED) + && (pOD->optCookie != NULL) ) { + print_stacked_arg(pOpts, pOD); + continue; + } + + /* + * If the argument has been disabled, + * Then set its value to the disablement string + */ + if ((pOD->fOptState & OPTST_DISABLED) != 0) { + printf(zOptDisabl, pOpts->pzPROGNAME, pOD->pz_NAME, + (pOD->pz_DisablePfx != NULL) + ? pOD->pz_DisablePfx : "false"); + continue; + } + + /* + * If the argument type is numeric, the last arg pointer + * is really the VALUE of the string that was pointed to. + */ + if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_NUMERIC) { + printf(zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME, + (int)pOD->optArg.argInt); + continue; + } + + /* + * If the argument type is an enumeration, then it is much + * like a text value, except we call the callback function + * to emit the value corresponding to the "optArg" number. + */ + if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_ENUMERATION) { + print_enumeration(pOpts, pOD); + continue; + } + + /* + * If the argument type is numeric, the last arg pointer + * is really the VALUE of the string that was pointed to. + */ + if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_BOOLEAN) { + printf(zFullOptFmt, pOpts->pzPROGNAME, pOD->pz_NAME, + (pOD->optArg.argBool == 0) ? "false" : "true"); + continue; + } + + /* + * IF the option has an empty value, + * THEN we set the argument to the occurrence count. + */ + if ( (pOD->optArg.argString == NULL) + || (pOD->optArg.argString[0] == NUL) ) { + + printf(zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME, + pOD->optOccCt); + continue; + } + + /* + * This option has a text value + */ + printf(zOptValFmt, pOpts->pzPROGNAME, pOD->pz_NAME); + print_quot_str(pOD->optArg.argString); + printf(zOptEnd, pOpts->pzPROGNAME, pOD->pz_NAME); + + } while (++optIx < pOpts->presetOptCt ); + + if ( ((pOpts->fOptSet & OPTPROC_REORDER) != 0) + && (pOpts->curOptIdx < pOpts->origArgCt)) + print_reordering(pOpts); + + fflush(stdout); +} + +/* + * Local Variables: + * mode: C + * c-file-style: "stroustrup" + * indent-tabs-mode: nil + * End: + * end of autoopts/putshell.c */ |