src/bin/common/opj_getopt.c

   1 /*
   2  * The copyright in this software is being made available under the 3-clauses
   3  * BSD License, included below. This software may be subject to other third
   4  * party and contributor rights, including patent rights, and no such rights
   5  * are granted under this license.
   6  *
   7  * Copyright (c) 1987, 1993, 1994
   8  *      The Regents of the University of California.  All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 /* last review : october 29th, 2002 */
  36
  37 #if defined(LIBC_SCCS) && !defined(lint)
  38 static char sccsid[] = "@(#)opj_getopt.c        8.3 (Berkeley) 4/27/95";
  39 #endif                          /* LIBC_SCCS and not lint */
  40
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include "opj_getopt.h"
  45
  46 int opj_opterr = 1,                     /* if error message should be printed */
  47  opj_optind = 1,                        /* index into parent argv vector */
  48  opj_optopt,                    /* character checked for validity */
  49  opj_optreset;                  /* reset getopt */
  50  char *opj_optarg;                      /* argument associated with option */
  51
  52 #define BADCH   (int)'?'
  53 #define BADARG  (int)':'
  54 static char EMSG[]={""};
  55
  56 /* As this class remembers its values from one Java call to the other, reset the values before each use */
  57 void opj_reset_options_reading(void) {
  58         opj_opterr = 1;
  59         opj_optind = 1;
  60 }
  61
  62 /*
  63  * getopt --
  64  *      Parse argc/argv argument vector.
  65  */
  66 int opj_getopt(int nargc, char *const *nargv, const char *ostr) {
  67 #  define __progname nargv[0]
  68   static char *place = EMSG;    /* option letter processing */
  69   const char *oli = NULL;       /* option letter list index */
  70
  71   if (opj_optreset || !*place) {        /* update scanning pointer */
  72     opj_optreset = 0;
  73     if (opj_optind >= nargc || *(place = nargv[opj_optind]) != '-') {
  74       place = EMSG;
  75       return (-1);
  76     }
  77     if (place[1] && *++place == '-') {  /* found "--" */
  78       ++opj_optind;
  79       place = EMSG;
  80       return (-1);
  81     }
  82   }                             /* option letter okay? */
  83   if ((opj_optopt = (int) *place++) == (int) ':' ||
  84       !(oli = strchr(ostr, opj_optopt))) {
  85     /*
  86      * if the user didn't specify '-' as an option,
  87      * assume it means -1.
  88      */
  89     if (opj_optopt == (int) '-')
  90       return (-1);
  91     if (!*place)
  92       ++opj_optind;
  93                 if (opj_opterr && *ostr != ':') {
  94       fprintf(stderr,
  95                      "%s: illegal option -- %c\n", __progname, opj_optopt);
  96                         return (BADCH);
  97                 }
  98   }
  99   if (*++oli != ':') {          /* don't need argument */
 100     opj_optarg = NULL;
 101     if (!*place)
 102       ++opj_optind;
 103   } else {                      /* need an argument */
 104     if (*place)                 /* no white space */
 105       opj_optarg = place;
 106     else if (nargc <= ++opj_optind) {   /* no arg */
 107       place = EMSG;
 108       if (*ostr == ':')
 109         return (BADARG);
 110                         if (opj_opterr) {
 111                                 fprintf(stderr,
 112                        "%s: option requires an argument -- %c\n",
 113                        __progname, opj_optopt);
 114                                 return (BADCH);
 115                         }
 116     } else                      /* white space */
 117       opj_optarg = nargv[opj_optind];
 118     place = EMSG;
 119     ++opj_optind;
 120   }
 121   return (opj_optopt);          /* dump back option letter */
 122 }
 123
 124
 125 int opj_getopt_long(int argc, char * const argv[], const char *optstring,
 126 const opj_option_t *longopts, int totlen) {
 127         static int lastidx,lastofs;
 128         const char *tmp;
 129         int i,len;
 130         char param = 1;
 131
 132 again:
 133         if (opj_optind >= argc || !argv[opj_optind] || *argv[opj_optind]!='-')
 134                 return -1;
 135
 136         if (argv[opj_optind][0]=='-' && argv[opj_optind][1]==0) {
 137                 if(opj_optind >= (argc - 1)){ /* no more input parameters */
 138                         param = 0;
 139                 }
 140                 else{ /* more input parameters */
 141                         if(argv[opj_optind + 1][0] == '-'){
 142                                 param = 0; /* Missing parameter after '-' */
 143                         }
 144                         else{
 145                                 param = 2;
 146                         }
 147                 }
 148         }
 149
 150         if (param == 0) {
 151                 ++opj_optind;
 152                 return (BADCH);
 153         }
 154
 155         if (argv[opj_optind][0]=='-') { /* long option */
 156                 char* arg=argv[opj_optind]+1;
 157                 const opj_option_t* o;
 158                 o=longopts;
 159                 len=sizeof(longopts[0]);
 160
 161                 if (param > 1){
 162                         arg = argv[opj_optind+1];
 163                         opj_optind++;
 164                 }
 165                 else
 166                         arg = argv[opj_optind]+1;
 167
 168                 if(strlen(arg)>1){
 169                         for (i=0;i<totlen;i=i+len,o++) {
 170                                 if (!strcmp(o->name,arg)) {     /* match */
 171                                         if (o->has_arg == 0) {
 172                                                 if ((argv[opj_optind+1])&&(!(argv[opj_optind+1][0]=='-'))){
 173                                                         fprintf(stderr,"%s: option does not require an argument. Ignoring %s\n",arg,argv[opj_optind+1]);
 174                                                         ++opj_optind;
 175                                                 }
 176                                         }else{
 177                                                 opj_optarg=argv[opj_optind+1];
 178                                                 if(opj_optarg){
 179                                                         if (opj_optarg[0] == '-'){ /* Has read next input parameter: No arg for current parameter */
 180                                                                 if (opj_opterr) {
 181                                                                         fprintf(stderr,"%s: option requires an argument\n",arg);
 182                                                                         return (BADCH);
 183                                                                 }
 184                                                         }
 185                                                 }
 186                                                 if (!opj_optarg && o->has_arg==1) {     /* no argument there */
 187                                                         if (opj_opterr) {
 188                                                                 fprintf(stderr,"%s: option requires an argument \n",arg);
 189                                                                 return (BADCH);
 190                                                         }
 191                                                 }
 192                                                 ++opj_optind;
 193                                         }
 194                                         ++opj_optind;
 195                                         if (o->flag)
 196                                                 *(o->flag)=o->val;
 197                                         else
 198                                                 return o->val;
 199                                         return 0;
 200                                 }
 201                         }/*(end for)String not found in the list*/
 202                         fprintf(stderr,"Invalid option %s\n",arg);
 203                         ++opj_optind;
 204                         return (BADCH);
 205                 }else{ /*Single character input parameter*/
 206                         if (*optstring==':') return ':';
 207                         if (lastidx!=opj_optind) {
 208                                 lastidx=opj_optind; lastofs=0;
 209                         }
 210                         opj_optopt=argv[opj_optind][lastofs+1];
 211                         if ((tmp=strchr(optstring,opj_optopt))) {/*Found input parameter in list*/
 212                                 if (*tmp==0) {  /* apparently, we looked for \0, i.e. end of argument */
 213                                         ++opj_optind;
 214                                         goto again;
 215                                 }
 216                                 if (tmp[1]==':') {      /* argument expected */
 217                                         if (tmp[2]==':' || argv[opj_optind][lastofs+2]) {       /* "-foo", return "oo" as opj_optarg */
 218                                                 if (!*(opj_optarg=argv[opj_optind]+lastofs+2)) opj_optarg=0;
 219                                                 goto found;
 220                                         }
 221                                         opj_optarg=argv[opj_optind+1];
 222                                         if(opj_optarg){
 223                                                 if (opj_optarg[0] == '-'){ /* Has read next input parameter: No arg for current parameter */
 224                                                         if (opj_opterr) {
 225                                                                 fprintf(stderr,"%s: option requires an argument\n",arg);
 226                                                                 return (BADCH);
 227                                                         }
 228                                                 }
 229                                         }
 230                                         if (!opj_optarg) {      /* missing argument */
 231                                                 if (opj_opterr) {
 232                                                         fprintf(stderr,"%s: option requires an argument\n",arg);
 233                                                         return (BADCH);
 234                                                 }
 235                                         }
 236                                         ++opj_optind;
 237                                 }else {/*Argument not expected*/
 238                                         ++lastofs;
 239                                         return opj_optopt;
 240                                 }
 241 found:
 242                                 ++opj_optind;
 243                                 return opj_optopt;
 244                         }       else {  /* not found */
 245                                 fprintf(stderr,"Invalid option %s\n",arg);
 246                                 ++opj_optind;
 247                                 return (BADCH);
 248                         }/*end of not found*/
 249
 250                 }/* end of single character*/
 251         }/*end '-'*/
 252         fprintf(stderr,"Invalid option\n");
 253         ++opj_optind;
 254         return (BADCH);;
 255 }/*end function*/