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+
+/**
+ * \file stack.c
+ *
+ * Time-stamp: "2012-08-11 08:35:28 bkorb"
+ *
+ * This is a special option processing routine that will save the
+ * argument to an option in a FIFO queue.
+ *
+ * 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
+ */
+
+#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)
+{
+ tArgList * pAL;
+
+ (void)pOpts;
+
+ if (pOpts <= OPTPROC_EMIT_LIMIT)
+ return;
+
+ if ((pOptDesc->fOptState & OPTST_RESET) != 0)
+ return;
+
+ 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++) {
+ char const * pzSrc = pAL->apzArgs[ i ];
+ char * pzEq = strchr(pzSrc, '=');
+ int res;
+
+
+ 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 (pOpts <= OPTPROC_EMIT_LIMIT)
+ return;
+
+ if ((pOD->fOptState & OPTST_RESET) != 0) {
+ tArgList* pAL = (void*)pOD->optCookie;
+ int ix;
+ if (pAL == NULL)
+ return;
+
+ ix = pAL->useCt;
+ while (--ix >= 0)
+ AGFREE(pAL->apzArgs[ix]);
+ AGFREE(pAL);
+
+ } else {
+ 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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