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