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lijia
320
libopts/putshell.c
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320
libopts/putshell.c
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/*
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* $Id: putshell.c,v 4.27 2009/08/01 17:43:06 bkorb Exp $
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* Time-stamp: "2008-07-27 12:14:38 bkorb"
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*
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* This module will interpret the options set in the tOptions
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* structure and print them to standard out in a fashion that
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* will allow them to be interpreted by the Bourne or Korn shells.
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*
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* This file is part of AutoOpts, a companion to AutoGen.
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* AutoOpts is free software.
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* AutoOpts is copyright (c) 1992-2009 by Bruce Korb - all rights reserved
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*
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* AutoOpts is available under any one of two licenses. The license
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* in use must be one of these two and the choice is under the control
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* of the user of the license.
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*
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* The GNU Lesser General Public License, version 3 or later
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* See the files "COPYING.lgplv3" and "COPYING.gplv3"
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*
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* The Modified Berkeley Software Distribution License
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* See the file "COPYING.mbsd"
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*
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* These files have the following md5sums:
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*
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* 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3
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* 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3
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* 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd
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*/
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/* = = = START-STATIC-FORWARD = = = */
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/* static forward declarations maintained by mk-fwd */
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static void
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putQuotedStr( tCC* pzStr );
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/* = = = END-STATIC-FORWARD = = = */
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/*
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* Make sure embedded single quotes come out okay. The initial quote has
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* been emitted and the closing quote will be upon return.
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*/
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static void
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putQuotedStr( tCC* pzStr )
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{
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/*
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* Handle empty strings to make the rest of the logic simpler.
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*/
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if ((pzStr == NULL) || (*pzStr == NUL)) {
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fputs( "''", stdout );
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return;
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}
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/*
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* Emit any single quotes/apostrophes at the start of the string and
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* bail if that is all we need to do.
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*/
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while (*pzStr == '\'') {
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fputs( "\\'", stdout );
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pzStr++;
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}
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if (*pzStr == NUL)
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return;
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/*
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* Start the single quote string
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*/
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fputc( '\'', stdout );
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for (;;) {
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tCC* pz = strchr( pzStr, '\'' );
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if (pz == NULL)
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break;
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/*
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* Emit the string up to the single quote (apostrophe) we just found.
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*/
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(void)fwrite( pzStr, (size_t)(pz - pzStr), (size_t)1, stdout );
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fputc( '\'', stdout );
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pzStr = pz;
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/*
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* Emit an escaped apostrophe for every one we find.
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* If that ends the string, do not re-open the single quotes.
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*/
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while (*++pzStr == '\'') fputs( "\\'", stdout );
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if (*pzStr == NUL)
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return;
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fputc( '\'', stdout );
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}
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/*
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* If we broke out of the loop, we must still emit the remaining text
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* and then close the single quote string.
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*/
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fputs( pzStr, stdout );
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fputc( '\'', stdout );
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}
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/*=export_func optionPutShell
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* what: write a portable shell script to parse options
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* private:
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* arg: tOptions*, pOpts, the program options descriptor
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* doc: This routine will emit portable shell script text for parsing
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* the options described in the option definitions.
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=*/
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void
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optionPutShell( tOptions* pOpts )
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{
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int optIx = 0;
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tSCC zOptCtFmt[] = "OPTION_CT=%d\nexport OPTION_CT\n";
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tSCC zOptNumFmt[] = "%1$s_%2$s=%3$d # 0x%3$X\nexport %1$s_%2$s\n";
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tSCC zOptDisabl[] = "%1$s_%2$s=%3$s\nexport %1$s_%2$s\n";
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tSCC zOptValFmt[] = "%s_%s=";
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tSCC zOptEnd[] = "\nexport %s_%s\n";
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tSCC zFullOptFmt[]= "%1$s_%2$s='%3$s'\nexport %1$s_%2$s\n";
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tSCC zEquivMode[] = "%1$s_%2$s_MODE='%3$s'\nexport %1$s_%2$s_MODE\n";
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printf( zOptCtFmt, pOpts->curOptIdx-1 );
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do {
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tOptDesc* pOD = pOpts->pOptDesc + optIx;
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if (SKIP_OPT(pOD))
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continue;
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/*
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* Equivalence classes are hard to deal with. Where the
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* option data wind up kind of squishes around. For the purposes
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* of emitting shell state, they are not recommended, but we'll
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* do something. I guess we'll emit the equivalenced-to option
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* at the point in time when the base option is found.
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*/
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if (pOD->optEquivIndex != NO_EQUIVALENT)
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continue; /* equivalence to a different option */
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/*
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* Equivalenced to a different option. Process the current option
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* as the equivalenced-to option. Keep the persistent state bits,
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* but copy over the set-state bits.
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*/
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if (pOD->optActualIndex != optIx) {
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tOptDesc* p = pOpts->pOptDesc + pOD->optActualIndex;
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p->optArg = pOD->optArg;
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p->fOptState &= OPTST_PERSISTENT_MASK;
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p->fOptState |= pOD->fOptState & ~OPTST_PERSISTENT_MASK;
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printf( zEquivMode, pOpts->pzPROGNAME, pOD->pz_NAME, p->pz_NAME );
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pOD = p;
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}
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/*
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* If the argument type is a set membership bitmask, then we always
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* emit the thing. We do this because it will always have some sort
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* of bitmask value and we need to emit the bit values.
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*/
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if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_MEMBERSHIP) {
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char const * pz;
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uintptr_t val = 1;
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printf( zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME,
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(int)(uintptr_t)(pOD->optCookie) );
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pOD->optCookie = (void*)(uintptr_t)~0UL;
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(*(pOD->pOptProc))(OPTPROC_RETURN_VALNAME, pOD);
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/*
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* We are building the typeset list. The list returned starts with
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* 'none + ' for use by option saving stuff. We must ignore that.
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*/
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pz = pOD->optArg.argString + 7;
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while (*pz != NUL) {
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printf( "typeset -x -i %s_", pOD->pz_NAME );
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while (IS_PLUS_N_SPACE_CHAR(*pz)) pz++;
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for (;;) {
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int ch = *(pz++);
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if (IS_LOWER_CASE_CHAR(ch)) fputc(toupper(ch), stdout);
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else if (IS_UPPER_CASE_CHAR(ch)) fputc(ch, stdout);
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else if (IS_PLUS_N_SPACE_CHAR(ch)) goto name_done;
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else if (ch == NUL) { pz--; goto name_done; }
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else fputc( '_', stdout );
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} name_done:;
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printf( "=%1$lu # 0x%1$lX\n", (unsigned long)val );
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val <<= 1;
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}
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AGFREE(pOD->optArg.argString);
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pOD->optArg.argString = NULL;
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pOD->fOptState &= ~OPTST_ALLOC_ARG;
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continue;
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}
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/*
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* IF the option was either specified or it wakes up enabled,
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* then we will emit information. Otherwise, skip it.
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* The idea is that if someone defines an option to initialize
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* enabled, we should tell our shell script that it is enabled.
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*/
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if (UNUSED_OPT( pOD ) && DISABLED_OPT( pOD ))
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continue;
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/*
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* Handle stacked arguments
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*/
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if ( (pOD->fOptState & OPTST_STACKED)
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&& (pOD->optCookie != NULL) ) {
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tSCC zOptCookieCt[] = "%1$s_%2$s_CT=%3$d\nexport %1$s_%2$s_CT\n";
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tArgList* pAL = (tArgList*)pOD->optCookie;
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tCC** ppz = pAL->apzArgs;
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int ct = pAL->useCt;
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printf( zOptCookieCt, pOpts->pzPROGNAME, pOD->pz_NAME, ct );
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while (--ct >= 0) {
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tSCC numarg_z[] = "%s_%s_%d=";
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tSCC end_z[] = "\nexport %s_%s_%d\n";
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printf( numarg_z, pOpts->pzPROGNAME, pOD->pz_NAME,
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pAL->useCt - ct );
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putQuotedStr( *(ppz++) );
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printf( end_z, pOpts->pzPROGNAME, pOD->pz_NAME,
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pAL->useCt - ct );
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}
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}
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/*
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* If the argument has been disabled,
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* Then set its value to the disablement string
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*/
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else if ((pOD->fOptState & OPTST_DISABLED) != 0)
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printf( zOptDisabl, pOpts->pzPROGNAME, pOD->pz_NAME,
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(pOD->pz_DisablePfx != NULL)
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? pOD->pz_DisablePfx : "false" );
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/*
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* If the argument type is numeric, the last arg pointer
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* is really the VALUE of the string that was pointed to.
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*/
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else if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_NUMERIC)
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printf( zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME,
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(int)pOD->optArg.argInt );
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/*
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* If the argument type is an enumeration, then it is much
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* like a text value, except we call the callback function
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* to emit the value corresponding to the "optArg" number.
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*/
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else if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_ENUMERATION) {
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uintptr_t e_val = pOD->optArg.argEnum;
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printf( zOptValFmt, pOpts->pzPROGNAME, pOD->pz_NAME );
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/*
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* Convert value to string, print that and restore numeric value.
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*/
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(*(pOD->pOptProc))(OPTPROC_RETURN_VALNAME, pOD);
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printf("'%s'", pOD->optArg.argString);
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if (pOD->fOptState & OPTST_ALLOC_ARG)
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AGFREE(pOD->optArg.argString);
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pOD->optArg.argEnum = e_val;
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printf(zOptEnd, pOpts->pzPROGNAME, pOD->pz_NAME);
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}
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/*
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* If the argument type is numeric, the last arg pointer
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* is really the VALUE of the string that was pointed to.
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*/
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else if (OPTST_GET_ARGTYPE(pOD->fOptState) == OPARG_TYPE_BOOLEAN)
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printf( zFullOptFmt, pOpts->pzPROGNAME, pOD->pz_NAME,
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(pOD->optArg.argBool == 0) ? "false" : "true" );
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/*
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* IF the option has an empty value,
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* THEN we set the argument to the occurrence count.
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*/
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else if ( (pOD->optArg.argString == NULL)
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|| (pOD->optArg.argString[0] == NUL) )
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printf( zOptNumFmt, pOpts->pzPROGNAME, pOD->pz_NAME,
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pOD->optOccCt );
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/*
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* This option has a text value
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*/
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else {
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printf( zOptValFmt, pOpts->pzPROGNAME, pOD->pz_NAME );
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putQuotedStr( pOD->optArg.argString );
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printf( zOptEnd, pOpts->pzPROGNAME, pOD->pz_NAME );
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}
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} while (++optIx < pOpts->presetOptCt );
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if ( ((pOpts->fOptSet & OPTPROC_REORDER) != 0)
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&& (pOpts->curOptIdx < pOpts->origArgCt)) {
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fputs( "set --", stdout );
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for (optIx = pOpts->curOptIdx; optIx < pOpts->origArgCt; optIx++) {
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char* pzArg = pOpts->origArgVect[ optIx ];
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if (strchr( pzArg, '\'' ) == NULL)
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printf( " '%s'", pzArg );
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else {
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fputs( " '", stdout );
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for (;;) {
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char ch = *(pzArg++);
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switch (ch) {
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case '\'': fputs( "'\\''", stdout ); break;
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case NUL: goto arg_done;
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default: fputc( ch, stdout ); break;
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}
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} arg_done:;
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fputc( '\'', stdout );
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}
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}
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fputs( "\nOPTION_CT=0\n", stdout );
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}
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}
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/*
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* Local Variables:
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* mode: C
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* c-file-style: "stroustrup"
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* indent-tabs-mode: nil
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* End:
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* end of autoopts/putshell.c */
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