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+
+/*
+ * stack.c
+ * $Id: stack.c,v 4.13 2007/02/04 17:44:12 bkorb Exp $
+ * Time-stamp: "2007-01-13 10:43:21 bkorb"
+ *
+ * This is a special option processing routine that will save the
+ * argument to an option in a FIFO queue.
+ */
+
+/*
+ * Automated Options copyright 1992-2007 Bruce Korb
+ *
+ * Automated Options is free software.
+ * You may redistribute it and/or modify it under the terms of the
+ * GNU General Public License, as published by the Free Software
+ * Foundation; either version 2, or (at your option) any later version.
+ *
+ * Automated Options is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Automated Options. See the file "COPYING". If not,
+ * write to: The Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * As a special exception, Bruce Korb gives permission for additional
+ * uses of the text contained in his release of AutoOpts.
+ *
+ * The exception is that, if you link the AutoOpts library with other
+ * files to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the AutoOpts library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by Bruce Korb under
+ * the name AutoOpts. If you copy code from other sources under the
+ * General Public License into a copy of AutoOpts, as the General Public
+ * License permits, the exception does not apply to the code that you add
+ * in this way. To avoid misleading anyone as to the status of such
+ * modified files, you must delete this exception notice from them.
+ *
+ * If you write modifications of your own for AutoOpts, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ */
+
+#ifdef WITH_LIBREGEX
+# include REGEX_HEADER
+#endif
+
+/*=export_func optionUnstackArg
+ * private:
+ *
+ * what: Remove option args from a stack
+ * arg: + tOptions* + pOpts + program options descriptor +
+ * arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
+ *
+ * doc:
+ * Invoked for options that are equivalenced to stacked options.
+=*/
+void
+optionUnstackArg(
+ tOptions* pOpts,
+ tOptDesc* pOptDesc )
+{
+ int res;
+
+ tArgList* pAL = (tArgList*)pOptDesc->optCookie;
+ /*
+ * IF we don't have any stacked options,
+ * THEN indicate that we don't have any of these options
+ */
+ if (pAL == NULL) {
+ pOptDesc->fOptState &= OPTST_PERSISTENT_MASK;
+ if ( (pOptDesc->fOptState & OPTST_INITENABLED) == 0)
+ pOptDesc->fOptState |= OPTST_DISABLED;
+ return;
+ }
+
+#ifdef WITH_LIBREGEX
+ {
+ regex_t re;
+ int i, ct, dIdx;
+
+ if (regcomp( &re, pOptDesc->optArg.argString, REG_NOSUB ) != 0)
+ return;
+
+ /*
+ * search the list for the entry(s) to remove. Entries that
+ * are removed are *not* copied into the result. The source
+ * index is incremented every time. The destination only when
+ * we are keeping a define.
+ */
+ for (i = 0, dIdx = 0, ct = pAL->useCt; --ct >= 0; i++) {
+ tCC* pzSrc = pAL->apzArgs[ i ];
+ char* pzEq = strchr( pzSrc, '=' );
+
+ if (pzEq != NULL)
+ *pzEq = NUL;
+
+ res = regexec( &re, pzSrc, (size_t)0, NULL, 0 );
+ switch (res) {
+ case 0:
+ /*
+ * Remove this entry by reducing the in-use count
+ * and *not* putting the string pointer back into
+ * the list.
+ */
+ AGFREE(pzSrc);
+ pAL->useCt--;
+ break;
+
+ default:
+ case REG_NOMATCH:
+ if (pzEq != NULL)
+ *pzEq = '=';
+
+ /*
+ * IF we have dropped an entry
+ * THEN we have to move the current one.
+ */
+ if (dIdx != i)
+ pAL->apzArgs[ dIdx ] = pzSrc;
+ dIdx++;
+ }
+ }
+
+ regfree( &re );
+ }
+#else /* not WITH_LIBREGEX */
+ {
+ int i, ct, dIdx;
+
+ /*
+ * search the list for the entry(s) to remove. Entries that
+ * are removed are *not* copied into the result. The source
+ * index is incremented every time. The destination only when
+ * we are keeping a define.
+ */
+ for (i = 0, dIdx = 0, ct = pAL->useCt; --ct >= 0; i++) {
+ tCC* pzSrc = pAL->apzArgs[ i ];
+ char* pzEq = strchr( pzSrc, '=' );
+
+ if (pzEq != NULL)
+ *pzEq = NUL;
+
+ if (strcmp( pzSrc, pOptDesc->optArg.argString ) == 0) {
+ /*
+ * Remove this entry by reducing the in-use count
+ * and *not* putting the string pointer back into
+ * the list.
+ */
+ AGFREE(pzSrc);
+ pAL->useCt--;
+ } else {
+ if (pzEq != NULL)
+ *pzEq = '=';
+
+ /*
+ * IF we have dropped an entry
+ * THEN we have to move the current one.
+ */
+ if (dIdx != i)
+ pAL->apzArgs[ dIdx ] = pzSrc;
+ dIdx++;
+ }
+ }
+ }
+#endif /* WITH_LIBREGEX */
+ /*
+ * IF we have unstacked everything,
+ * THEN indicate that we don't have any of these options
+ */
+ if (pAL->useCt == 0) {
+ pOptDesc->fOptState &= OPTST_PERSISTENT_MASK;
+ if ( (pOptDesc->fOptState & OPTST_INITENABLED) == 0)
+ pOptDesc->fOptState |= OPTST_DISABLED;
+ AGFREE( (void*)pAL );
+ pOptDesc->optCookie = NULL;
+ }
+}
+
+
+/*
+ * Put an entry into an argument list. The first argument points to
+ * a pointer to the argument list structure. It gets passed around
+ * as an opaque address.
+ */
+LOCAL void
+addArgListEntry( void** ppAL, void* entry )
+{
+ tArgList* pAL = *(void**)ppAL;
+
+ /*
+ * IF we have never allocated one of these,
+ * THEN allocate one now
+ */
+ if (pAL == NULL) {
+ pAL = (tArgList*)AGALOC( sizeof( *pAL ), "new option arg stack" );
+ if (pAL == NULL)
+ return;
+ pAL->useCt = 0;
+ pAL->allocCt = MIN_ARG_ALLOC_CT;
+ *ppAL = (void*)pAL;
+ }
+
+ /*
+ * ELSE if we are out of room
+ * THEN make it bigger
+ */
+ else if (pAL->useCt >= pAL->allocCt) {
+ size_t sz = sizeof( *pAL );
+ pAL->allocCt += INCR_ARG_ALLOC_CT;
+
+ /*
+ * The base structure contains space for MIN_ARG_ALLOC_CT
+ * pointers. We subtract it off to find our augment size.
+ */
+ sz += sizeof(char*) * (pAL->allocCt - MIN_ARG_ALLOC_CT);
+ pAL = (tArgList*)AGREALOC( (void*)pAL, sz, "expanded opt arg stack" );
+ if (pAL == NULL)
+ return;
+ *ppAL = (void*)pAL;
+ }
+
+ /*
+ * Insert the new argument into the list
+ */
+ pAL->apzArgs[ (pAL->useCt)++ ] = entry;
+}
+
+
+/*=export_func optionStackArg
+ * private:
+ *
+ * what: put option args on a stack
+ * arg: + tOptions* + pOpts + program options descriptor +
+ * arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
+ *
+ * doc:
+ * Keep an entry-ordered list of option arguments.
+=*/
+void
+optionStackArg(
+ tOptions* pOpts,
+ tOptDesc* pOD )
+{
+ char * pz;
+
+ if (pOD->optArg.argString == NULL)
+ return;
+
+ AGDUPSTR(pz, pOD->optArg.argString, "stack arg");
+ addArgListEntry( &(pOD->optCookie), (void*)pz );
+}
+/*
+ * Local Variables:
+ * mode: C
+ * c-file-style: "stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * end of autoopts/stack.c */
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