forked from test34/can_wizard
135 lines
5.2 KiB
C
135 lines
5.2 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_end: Implements the error handling utilities
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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_end_resetfn(struct arg_end* 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 void arg_end_errorfn(void* parent, arg_dstr_t ds, int error, const char* argval, const char* progname) {
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/* suppress unreferenced formal parameter warning */
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(void)parent;
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progname = progname ? progname : "";
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argval = argval ? argval : "";
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arg_dstr_catf(ds, "%s: ", progname);
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switch (error) {
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case ARG_ELIMIT:
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arg_dstr_cat(ds, "too many errors to display");
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break;
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case ARG_EMALLOC:
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arg_dstr_cat(ds, "insufficient memory");
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break;
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case ARG_ENOMATCH:
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arg_dstr_catf(ds, "unexpected argument \"%s\"", argval);
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break;
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case ARG_EMISSARG:
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arg_dstr_catf(ds, "option \"%s\" requires an argument", argval);
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break;
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case ARG_ELONGOPT:
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arg_dstr_catf(ds, "invalid option \"%s\"", argval);
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break;
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default:
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arg_dstr_catf(ds, "invalid option \"-%c\"", error);
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break;
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}
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arg_dstr_cat(ds, "\n");
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}
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struct arg_end* arg_end(int maxcount) {
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size_t nbytes;
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struct arg_end* result;
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nbytes = sizeof(struct arg_end) + (size_t)maxcount * sizeof(int) /* storage for int error[maxcount] array*/
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+ (size_t)maxcount * sizeof(void*) /* storage for void* parent[maxcount] array */
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+ (size_t)maxcount * sizeof(char*); /* storage for char* argval[maxcount] array */
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result = (struct arg_end*)xmalloc(nbytes);
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/* init the arg_hdr struct */
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result->hdr.flag = ARG_TERMINATOR;
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result->hdr.shortopts = NULL;
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result->hdr.longopts = NULL;
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result->hdr.datatype = NULL;
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result->hdr.glossary = NULL;
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result->hdr.mincount = 1;
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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_end_resetfn;
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result->hdr.scanfn = NULL;
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result->hdr.checkfn = NULL;
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result->hdr.errorfn = (arg_errorfn*)arg_end_errorfn;
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/* store error[maxcount] array immediately after struct arg_end */
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result->error = (int*)(result + 1);
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/* store parent[maxcount] array immediately after error[] array */
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result->parent = (void**)(result->error + maxcount);
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/* store argval[maxcount] array immediately after parent[] array */
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result->argval = (const char**)(result->parent + maxcount);
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ARG_TRACE(("arg_end(%d) returns %p\n", maxcount, result));
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return result;
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}
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void arg_print_errors_ds(arg_dstr_t ds, struct arg_end* end, const char* progname) {
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int i;
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ARG_TRACE(("arg_errors()\n"));
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for (i = 0; i < end->count; i++) {
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struct arg_hdr* errorparent = (struct arg_hdr*)(end->parent[i]);
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if (errorparent->errorfn)
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errorparent->errorfn(end->parent[i], ds, end->error[i], end->argval[i], progname);
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}
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}
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void arg_print_errors(FILE* fp, struct arg_end* end, const char* progname) {
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arg_dstr_t ds = arg_dstr_create();
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arg_print_errors_ds(ds, end, progname);
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fputs(arg_dstr_cstr(ds), fp);
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arg_dstr_destroy(ds);
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}
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