182 lines
7.0 KiB
C
182 lines
7.0 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*****************************************************************************
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Source parser.c
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Version 0.1
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Date 2012/02/27
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Product NAS stack
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Subsystem Utilities
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Author Frederic Maurel
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Description Usefull command line parser
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*****************************************************************************/
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#include "parser.h"
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#include "commonDef.h"
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#include <stdio.h> // fprintf
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#include <string.h> // strcmp, strncpy
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/****************************************************************************/
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/**************** E X T E R N A L D E F I N I T I O N S ****************/
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/****************************************************************************/
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/****************************************************************************/
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/******************* L O C A L D E F I N I T I O N S *******************/
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/****************************************************************************/
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/****************************************************************************/
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/****************** E X P O R T E D F U N C T I O N S ******************/
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/****************************************************************************/
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/****************************************************************************
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** **
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** Name: parser_print_usage() **
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** **
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** Description: Displays command line usage **
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** **
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** Inputs: command_line: Pointer to the command line structure **
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** Others: None **
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** **
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** Outputs: Return: None **
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** Others: None **
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** **
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***************************************************************************/
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void parser_print_usage(const parser_command_line_t* command_line)
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{
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fprintf(stderr, "Usage: %s", command_line->name);
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for (int i=0; i < command_line->nb_options; i++) {
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fprintf(stderr, " [%s %s]",
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command_line->options[i].name,
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command_line->options[i].argument);
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}
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fprintf(stderr, "\n");
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for (int i=0; i < command_line->nb_options; i++) {
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fprintf(stderr, "\t%s\t%s\t(%s)\n",
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command_line->options[i].argument,
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command_line->options[i].usage,
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command_line->options[i].value);
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}
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}
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/****************************************************************************
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** **
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** Name: parser_get_options() **
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** **
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** Description: Parses the command line options **
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** **
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** Inputs: argc: Number of command line options **
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** argv: Pointer to the command line **
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** command_line: Pointer to the command line structure **
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** Others: None **
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** **
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** Outputs: Return: RETURNerror, RETURNok **
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** command_line: Pointer to the command line structure **
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** Others: None **
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** **
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***************************************************************************/
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int parser_get_options(int argc, const char** argv,
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parser_command_line_t* command_line)
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{
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int argument_not_found, option_not_found = 1;
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int option_length;
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/* Initialize command line structure */
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strncpy(command_line->name, argv[0], PARSER_COMMAND_NAME_SIZE);
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for (int i=0; i < command_line->nb_options; i++) {
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if ( strcmp(command_line->options[i].value, "NULL") ) {
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command_line->options[i].pvalue = command_line->options[i].value;
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}
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}
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/* No command line options */
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if (argc == 1) {
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return RETURNok;
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}
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/* Parse the command line looking for options */
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while (*++argv && **argv == '-') {
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argument_not_found = 1;
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option_not_found = 1;
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for (int i=0; i < command_line->nb_options; i++) {
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if ( !strcmp(command_line->options[i].name, *argv) ) {
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option_not_found = 0;
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if (argv[1] && *argv[1] != '-') {
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argument_not_found = 0;
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option_length = (int) strlen(*++argv);
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if (option_length >= PARSER_OPTION_VALUE_SIZE) {
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fprintf(stderr, "%s: option name too long (%d), should be less than %d characters\n",
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*argv, option_length,
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PARSER_OPTION_VALUE_SIZE);
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return RETURNerror;
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}
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strcpy(command_line->options[i].value, *argv);
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if (command_line->options[i].pvalue == NULL) {
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command_line->options[i].pvalue =
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command_line->options[i].value;
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}
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}
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break;
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}
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}
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if (option_not_found) {
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if ( strcmp(*argv, "-?") && strcmp(*argv, "-h") &&
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strcmp(*argv, "-help") && strcmp(*argv, "--help") ) {
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fprintf(stderr, "%s: illegal option %s\n",
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command_line->name, *argv);
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return RETURNerror;
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}
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} else if (argument_not_found) {
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fprintf(stderr, "%s: option %s requires an argument\n",
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command_line->name, *argv);
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return RETURNerror;
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}
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}
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if (option_not_found) {
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return RETURNerror;
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}
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return RETURNok;
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}
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/****************************************************************************/
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/********************* L O C A L F U N C T I O N S *********************/
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/****************************************************************************/
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