/**
* \file stack.c
*
* This is a special option processing routine that will save the
* argument to an option in a FIFO queue.
*
* @addtogroup autoopts
* @{
*/
/*
* This file is part of AutoOpts, a companion to AutoGen.
* AutoOpts is free software.
* AutoOpts is Copyright (C) 1992-2018 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 sha256 sums:
*
* 8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95 COPYING.gplv3
* 4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b COPYING.lgplv3
* 13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239 COPYING.mbsd
*/
#ifdef WITH_LIBREGEX
# include REGEX_HEADER
#endif
/*=export_func optionUnstackArg
* private:
*
* what: Remove option args from a stack
* arg: + tOptions * + opts + program options descriptor +
* arg: + tOptDesc * + od + the descriptor for this arg +
*
* doc:
* Invoked for options that are equivalenced to stacked options.
=*/
void
optionUnstackArg(tOptions * opts, tOptDesc * od)
{
tArgList * arg_list;
if (INQUERY_CALL(opts, od))
return;
arg_list = (tArgList *)od->optCookie;
/*
* IF we don't have any stacked options,
* THEN indicate that we don't have any of these options
*/
if (arg_list == NULL) {
od->fOptState &= OPTST_PERSISTENT_MASK;
if ((od->fOptState & OPTST_INITENABLED) == 0)
od->fOptState |= OPTST_DISABLED;
return;
}
#ifdef WITH_LIBREGEX
{
regex_t re;
int i, ct, dIdx;
if (regcomp(&re, od->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 = arg_list->useCt; --ct >= 0; i++) {
char const * pzSrc = arg_list->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);
arg_list->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)
arg_list->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 = arg_list->useCt; --ct >= 0; i++) {
const char * pzSrc = arg_list->apzArgs[ i ];
char * pzEq = strchr(pzSrc, '=');
if (pzEq != NULL)
*pzEq = NUL;
if (strcmp(pzSrc, od->optArg.argString) == 0) {
/*
* Remove this entry by reducing the in-use count
* and *not* putting the string pointer back into
* the list.
*/
AGFREE(pzSrc);
arg_list->useCt--;
} else {
if (pzEq != NULL)
*pzEq = '=';
/*
* IF we have dropped an entry
* THEN we have to move the current one.
*/
if (dIdx != i)
arg_list->apzArgs[ dIdx ] = pzSrc;
dIdx++;
}
}
}
#endif /* WITH_LIBREGEX */
/*
* IF we have unstacked everything,
* THEN indicate that we don't have any of these options
*/
if (arg_list->useCt == 0) {
od->fOptState &= OPTST_PERSISTENT_MASK;
if ((od->fOptState & OPTST_INITENABLED) == 0)
od->fOptState |= OPTST_DISABLED;
AGFREE(arg_list);
od->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.
*/
static 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 = VOIDP(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 *) * ((size_t)pAL->allocCt - MIN_ARG_ALLOC_CT);
pAL = (tArgList *)AGREALOC(VOIDP(pAL), sz, "expanded opt arg stack");
if (pAL == NULL)
return;
*ppAL = VOIDP(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 * + opts + program options descriptor +
* arg: + tOptDesc * + od + the descriptor for this arg +
*
* doc:
* Keep an entry-ordered list of option arguments.
=*/
void
optionStackArg(tOptions * opts, tOptDesc * od)
{
char * pz;
if (INQUERY_CALL(opts, od))
return;
if ((od->fOptState & OPTST_RESET) != 0) {
tArgList * arg_list = od->optCookie;
int ix;
if (arg_list == NULL)
return;
ix = arg_list->useCt;
while (--ix >= 0)
AGFREE(arg_list->apzArgs[ix]);
AGFREE(arg_list);
} else {
if (od->optArg.argString == NULL)
return;
AGDUPSTR(pz, od->optArg.argString, "stack arg");
addArgListEntry(&(od->optCookie), VOIDP(pz));
}
}
/** @}
*
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of autoopts/stack.c */
