src/bin/common/opj_getopt.c

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