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125 lines
4.9 KiB
C
125 lines
4.9 KiB
C
/*
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* SPDX-FileCopyrightText: 1998-2001,2003-2011,2013 Stewart Heitmann
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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/*******************************************************************************
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* arg_lit: Implements the literature command-line option
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*
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* This file is part of the argtable3 library.
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*
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* Copyright (C) 1998-2001,2003-2011,2013 Stewart Heitmann
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* <sheitmann@users.sourceforge.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of STEWART HEITMANN nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL STEWART HEITMANN BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************/
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#include "argtable3.h"
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#ifndef ARG_AMALGAMATION
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#include "argtable3_private.h"
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#endif
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#include <stdlib.h>
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static void arg_lit_resetfn(struct arg_lit* parent) {
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ARG_TRACE(("%s:resetfn(%p)\n", __FILE__, parent));
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parent->count = 0;
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}
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static int arg_lit_scanfn(struct arg_lit* parent, const char* argval) {
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int errorcode = 0;
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if (parent->count < parent->hdr.maxcount)
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parent->count++;
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else
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errorcode = ARG_ERR_MAXCOUNT;
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ARG_TRACE(("%s:scanfn(%p,%s) returns %d\n", __FILE__, parent, argval, errorcode));
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return errorcode;
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}
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static int arg_lit_checkfn(struct arg_lit* parent) {
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int errorcode = (parent->count < parent->hdr.mincount) ? ARG_ERR_MINCOUNT : 0;
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ARG_TRACE(("%s:checkfn(%p) returns %d\n", __FILE__, parent, errorcode));
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return errorcode;
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}
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static void arg_lit_errorfn(struct arg_lit* parent, arg_dstr_t ds, int errorcode, const char* argval, const char* progname) {
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const char* shortopts = parent->hdr.shortopts;
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const char* longopts = parent->hdr.longopts;
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const char* datatype = parent->hdr.datatype;
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switch (errorcode) {
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case ARG_ERR_MINCOUNT:
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arg_dstr_catf(ds, "%s: missing option ", progname);
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arg_print_option_ds(ds, shortopts, longopts, datatype, "\n");
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arg_dstr_cat(ds, "\n");
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break;
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case ARG_ERR_MAXCOUNT:
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arg_dstr_catf(ds, "%s: extraneous option ", progname);
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arg_print_option_ds(ds, shortopts, longopts, datatype, "\n");
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break;
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}
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ARG_TRACE(("%s:errorfn(%p, %p, %d, %s, %s)\n", __FILE__, parent, ds, errorcode, argval, progname));
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}
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struct arg_lit* arg_lit0(const char* shortopts, const char* longopts, const char* glossary) {
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return arg_litn(shortopts, longopts, 0, 1, glossary);
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}
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struct arg_lit* arg_lit1(const char* shortopts, const char* longopts, const char* glossary) {
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return arg_litn(shortopts, longopts, 1, 1, glossary);
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}
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struct arg_lit* arg_litn(const char* shortopts, const char* longopts, int mincount, int maxcount, const char* glossary) {
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struct arg_lit* result;
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/* foolproof things by ensuring maxcount is not less than mincount */
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maxcount = (maxcount < mincount) ? mincount : maxcount;
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result = (struct arg_lit*)xmalloc(sizeof(struct arg_lit));
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/* init the arg_hdr struct */
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result->hdr.flag = 0;
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result->hdr.shortopts = shortopts;
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result->hdr.longopts = longopts;
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result->hdr.datatype = NULL;
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result->hdr.glossary = glossary;
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result->hdr.mincount = mincount;
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result->hdr.maxcount = maxcount;
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result->hdr.parent = result;
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result->hdr.resetfn = (arg_resetfn*)arg_lit_resetfn;
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result->hdr.scanfn = (arg_scanfn*)arg_lit_scanfn;
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result->hdr.checkfn = (arg_checkfn*)arg_lit_checkfn;
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result->hdr.errorfn = (arg_errorfn*)arg_lit_errorfn;
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/* init local variables */
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result->count = 0;
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ARG_TRACE(("arg_litn() returns %p\n", result));
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return result;
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}
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