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https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
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267 lines
7.2 KiB
C
267 lines
7.2 KiB
C
/* $NetBSD: stack.c,v 1.3 2012/02/01 07:46:23 kardel Exp $ */
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/**
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* \file stack.c
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*
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* Time-stamp: "2010-07-17 10:42:27 bkorb"
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*
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* This is a special option processing routine that will save the
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* argument to an option in a FIFO queue.
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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) 1992-2011 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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#ifdef WITH_LIBREGEX
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# include REGEX_HEADER
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#endif
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/*=export_func optionUnstackArg
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* private:
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*
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* what: Remove option args from a stack
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* arg: + tOptions* + pOpts + program options descriptor +
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* arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
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*
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* doc:
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* Invoked for options that are equivalenced to stacked options.
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=*/
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void
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optionUnstackArg(
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tOptions* pOpts,
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tOptDesc* pOptDesc )
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{
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int res;
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tArgList* pAL;
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if ((pOptDesc->fOptState & OPTST_RESET) != 0)
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return;
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pAL = (tArgList*)pOptDesc->optCookie;
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/*
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* IF we don't have any stacked options,
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* THEN indicate that we don't have any of these options
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*/
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if (pAL == NULL) {
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pOptDesc->fOptState &= OPTST_PERSISTENT_MASK;
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if ((pOptDesc->fOptState & OPTST_INITENABLED) == 0)
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pOptDesc->fOptState |= OPTST_DISABLED;
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return;
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}
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#ifdef WITH_LIBREGEX
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{
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regex_t re;
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int i, ct, dIdx;
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if (regcomp(&re, pOptDesc->optArg.argString, REG_NOSUB) != 0)
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return;
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/*
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* search the list for the entry(s) to remove. Entries that
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* are removed are *not* copied into the result. The source
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* index is incremented every time. The destination only when
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* we are keeping a define.
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*/
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for (i = 0, dIdx = 0, ct = pAL->useCt; --ct >= 0; i++) {
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tCC* pzSrc = pAL->apzArgs[ i ];
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char* pzEq = strchr(pzSrc, '=');
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if (pzEq != NULL)
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*pzEq = NUL;
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res = regexec(&re, pzSrc, (size_t)0, NULL, 0);
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switch (res) {
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case 0:
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/*
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* Remove this entry by reducing the in-use count
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* and *not* putting the string pointer back into
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* the list.
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*/
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AGFREE(pzSrc);
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pAL->useCt--;
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break;
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default:
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case REG_NOMATCH:
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if (pzEq != NULL)
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*pzEq = '=';
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/*
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* IF we have dropped an entry
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* THEN we have to move the current one.
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*/
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if (dIdx != i)
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pAL->apzArgs[ dIdx ] = pzSrc;
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dIdx++;
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}
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}
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regfree(&re);
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}
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#else /* not WITH_LIBREGEX */
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{
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int i, ct, dIdx;
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/*
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* search the list for the entry(s) to remove. Entries that
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* are removed are *not* copied into the result. The source
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* index is incremented every time. The destination only when
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* we are keeping a define.
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*/
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for (i = 0, dIdx = 0, ct = pAL->useCt; --ct >= 0; i++) {
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tCC* pzSrc = pAL->apzArgs[ i ];
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char* pzEq = strchr(pzSrc, '=');
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if (pzEq != NULL)
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*pzEq = NUL;
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if (strcmp(pzSrc, pOptDesc->optArg.argString) == 0) {
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/*
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* Remove this entry by reducing the in-use count
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* and *not* putting the string pointer back into
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* the list.
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*/
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AGFREE(pzSrc);
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pAL->useCt--;
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} else {
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if (pzEq != NULL)
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*pzEq = '=';
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/*
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* IF we have dropped an entry
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* THEN we have to move the current one.
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*/
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if (dIdx != i)
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pAL->apzArgs[ dIdx ] = pzSrc;
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dIdx++;
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}
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}
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}
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#endif /* WITH_LIBREGEX */
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/*
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* IF we have unstacked everything,
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* THEN indicate that we don't have any of these options
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*/
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if (pAL->useCt == 0) {
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pOptDesc->fOptState &= OPTST_PERSISTENT_MASK;
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if ((pOptDesc->fOptState & OPTST_INITENABLED) == 0)
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pOptDesc->fOptState |= OPTST_DISABLED;
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AGFREE((void*)pAL);
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pOptDesc->optCookie = NULL;
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}
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}
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/*
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* Put an entry into an argument list. The first argument points to
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* a pointer to the argument list structure. It gets passed around
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* as an opaque address.
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*/
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LOCAL void
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addArgListEntry(void** ppAL, void* entry)
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{
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tArgList* pAL = *(void**)ppAL;
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/*
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* IF we have never allocated one of these,
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* THEN allocate one now
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*/
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if (pAL == NULL) {
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pAL = (tArgList*)AGALOC(sizeof(*pAL), "new option arg stack");
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if (pAL == NULL)
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return;
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pAL->useCt = 0;
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pAL->allocCt = MIN_ARG_ALLOC_CT;
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*ppAL = (void*)pAL;
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}
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/*
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* ELSE if we are out of room
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* THEN make it bigger
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*/
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else if (pAL->useCt >= pAL->allocCt) {
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size_t sz = sizeof(*pAL);
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pAL->allocCt += INCR_ARG_ALLOC_CT;
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/*
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* The base structure contains space for MIN_ARG_ALLOC_CT
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* pointers. We subtract it off to find our augment size.
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*/
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sz += sizeof(char*) * (pAL->allocCt - MIN_ARG_ALLOC_CT);
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pAL = (tArgList*)AGREALOC((void*)pAL, sz, "expanded opt arg stack");
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if (pAL == NULL)
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return;
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*ppAL = (void*)pAL;
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}
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/*
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* Insert the new argument into the list
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*/
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pAL->apzArgs[ (pAL->useCt)++ ] = entry;
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}
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/*=export_func optionStackArg
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* private:
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*
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* what: put option args on a stack
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* arg: + tOptions* + pOpts + program options descriptor +
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* arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
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*
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* doc:
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* Keep an entry-ordered list of option arguments.
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=*/
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void
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optionStackArg(
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tOptions* pOpts,
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tOptDesc* pOD )
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{
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char * pz;
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if ((pOD->fOptState & OPTST_RESET) != 0) {
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tArgList* pAL = (void*)pOD->optCookie;
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int ix;
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if (pAL == NULL)
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return;
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ix = pAL->useCt;
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while (--ix >= 0)
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AGFREE(pAL->apzArgs[ix]);
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AGFREE(pAL);
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} else {
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if (pOD->optArg.argString == NULL)
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return;
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AGDUPSTR(pz, pOD->optArg.argString, "stack arg");
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addArgListEntry(&(pOD->optCookie), (void*)pz);
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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/stack.c */
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