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/*
* SPDX-FileCopyrightText: 1998-2001,2003-2011,2013 Stewart Heitmann
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/*******************************************************************************
* arg_str: Implements the str command-line option
*
* This file is part of the argtable3 library.
*
* Copyright (C) 1998-2001,2003-2011,2013 Stewart Heitmann
* <sheitmann@users.sourceforge.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of STEWART HEITMANN nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL STEWART HEITMANN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
#include "argtable3.h"
#ifndef ARG_AMALGAMATION
#include "argtable3_private.h"
#endif
#include <stdlib.h>
static void arg_str_resetfn(struct arg_str* parent) {
int i;
ARG_TRACE(("%s:resetfn(%p)\n", __FILE__, parent));
for (i = 0; i < parent->count; i++) {
parent->sval[i] = "";
}
parent->count = 0;
}
static int arg_str_scanfn(struct arg_str* parent, const char* argval) {
int errorcode = 0;
if (parent->count == parent->hdr.maxcount) {
/* maximum number of arguments exceeded */
errorcode = ARG_ERR_MAXCOUNT;
} else if (!argval) {
/* a valid argument with no argument value was given. */
/* This happens when an optional argument value was invoked. */
/* leave parent argument value unaltered but still count the argument. */
parent->count++;
} else {
parent->sval[parent->count++] = argval;
}
ARG_TRACE(("%s:scanfn(%p) returns %d\n", __FILE__, parent, errorcode));
return errorcode;
}
static int arg_str_checkfn(struct arg_str* parent) {
int errorcode = (parent->count < parent->hdr.mincount) ? ARG_ERR_MINCOUNT : 0;
ARG_TRACE(("%s:checkfn(%p) returns %d\n", __FILE__, parent, errorcode));
return errorcode;
}
static void arg_str_errorfn(struct arg_str* parent, arg_dstr_t ds, int errorcode, const char* argval, const char* progname) {
const char* shortopts = parent->hdr.shortopts;
const char* longopts = parent->hdr.longopts;
const char* datatype = parent->hdr.datatype;
/* make argval NULL safe */
argval = argval ? argval : "";
arg_dstr_catf(ds, "%s: ", progname);
switch (errorcode) {
case ARG_ERR_MINCOUNT:
arg_dstr_cat(ds, "missing option ");
arg_print_option_ds(ds, shortopts, longopts, datatype, "\n");
break;
case ARG_ERR_MAXCOUNT:
arg_dstr_cat(ds, "excess option ");
arg_print_option_ds(ds, shortopts, longopts, argval, "\n");
break;
}
}
struct arg_str* arg_str0(const char* shortopts, const char* longopts, const char* datatype, const char* glossary) {
return arg_strn(shortopts, longopts, datatype, 0, 1, glossary);
}
struct arg_str* arg_str1(const char* shortopts, const char* longopts, const char* datatype, const char* glossary) {
return arg_strn(shortopts, longopts, datatype, 1, 1, glossary);
}
struct arg_str* arg_strn(const char* shortopts, const char* longopts, const char* datatype, int mincount, int maxcount, const char* glossary) {
size_t nbytes;
struct arg_str* result;
int i;
/* should not allow this stupid error */
/* we should return an error code warning this logic error */
/* foolproof things by ensuring maxcount is not less than mincount */
maxcount = (maxcount < mincount) ? mincount : maxcount;
nbytes = sizeof(struct arg_str) /* storage for struct arg_str */
+ (size_t)maxcount * sizeof(char*); /* storage for sval[maxcount] array */
result = (struct arg_str*)xmalloc(nbytes);
/* init the arg_hdr struct */
result->hdr.flag = ARG_HASVALUE;
result->hdr.shortopts = shortopts;
result->hdr.longopts = longopts;
result->hdr.datatype = datatype ? datatype : "<string>";
result->hdr.glossary = glossary;
result->hdr.mincount = mincount;
result->hdr.maxcount = maxcount;
result->hdr.parent = result;
result->hdr.resetfn = (arg_resetfn*)arg_str_resetfn;
result->hdr.scanfn = (arg_scanfn*)arg_str_scanfn;
result->hdr.checkfn = (arg_checkfn*)arg_str_checkfn;
result->hdr.errorfn = (arg_errorfn*)arg_str_errorfn;
/* store the sval[maxcount] array immediately after the arg_str struct */
result->sval = (const char**)(result + 1);
result->count = 0;
/* foolproof the string pointers by initializing them to reference empty strings */
for (i = 0; i < maxcount; i++)
result->sval[i] = "";
ARG_TRACE(("arg_strn() returns %p\n", result));
return result;
}
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