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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#include "getopt_ext.h"
char *optarg_ext;
int optind_ext=1;
int optopt_ext;
int opterr_ext;
int optind_last;
static int _getopt_ext_inited = 0;
static int _optind_firstHandled = 0;
static int _optind_firstRecognized = 0;
static int _getopt_ext_done_long = 0;
static
int _getopt_ext_init(int argc)
{
_getopt_ext_inited = 1;
/* optind_ext = 1;*/
optind_last = argc;
_optind_firstHandled = argc;
_optind_firstRecognized = argc;
/* optind = 1;*/
_getopt_ext_done_long = 0;
return(0);
}
#if 0
static
int _getopt_ext_done()
{
_getopt_ext_done_long = 1;
return(0);
}
#endif
static
int _getopt_ext_find(int argc,
char **argv,
const struct opt_ext *longOpts)
{
int i=0;
struct opt_ext *lopt;
i=0;
lopt = (struct opt_ext *)longOpts;
while(lopt->o_string) {
if(0 != strcmp(argv[optind_ext]+2,lopt->o_string)) {
i++;
lopt++;
continue;
}
/*
* found it
*/
return(i);
}
/* should never come here */
return(-1);
}
static
int _getopt_ext_tailit(int argc,
char **argv,
int hasArg,
int recognized)
{
char *_optPtr=NULL;
char *_optArgPtr=NULL;
int _endIndex=optind_last;
int _nextDest=optind_ext;
int _nextSource=optind_ext;
_optPtr = argv[optind_ext];
if(hasArg) {
_nextSource = optind_ext + 2;
_endIndex = ((recognized)?_optind_firstRecognized:_optind_firstHandled);
_optArgPtr = argv[optind_ext + 1];
} else {
_nextSource = optind_ext + 1;
_endIndex = ((recognized)?_optind_firstRecognized:_optind_firstHandled);
_optArgPtr = NULL;
}
while(_nextSource < _endIndex) {
argv[_nextDest] = argv[_nextSource];
_nextSource++;
_nextDest++;
}
argv[_nextDest] = _optPtr;
/* argv[_nextDest] = NULL; */
if(hasArg) {
argv[_nextDest + 1] = _optArgPtr;
if(recognized) {
_optind_firstRecognized -=2;
}
_optind_firstHandled -=2;
} else {
if(recognized) {
_optind_firstRecognized -=1;
}
_optind_firstHandled -=1;
}
optind_last = _optind_firstRecognized;
return(0);
}
/*
* First process all the long options (using exact string matches)
* Then, follow up with regular option processing using good ol' getopt
*
* return the same return codes as getopt
*
*/
int getopt_ext(int argc,
char **argv,
const char *optstring,
const struct opt_ext *longOpts,
int *longOptIndex)
{
int retVal;
if(!_getopt_ext_inited) {
_getopt_ext_init(argc);
}
if(_optind_firstHandled < optind_ext) {
/* we are not processing extended options anymore...
let getopt handle it.
*/
goto _doneWithExtendedOptions;
}
/*
* if we are here, we are not done with extended options...
*
*/
while(_optind_firstHandled > optind_ext) {
if(0 != strncmp(argv[optind_ext], "--", 2)) {
optind_ext++;
continue;
}
/*
* possibly an extended option
*/
retVal = _getopt_ext_find(argc,argv,longOpts);
if(-1 == retVal) {
/*
* unrecognized long option...
* we will let getopt handle it later...
*
*/
optind_ext++;
continue;
}
/*
* we found an extended option
* now find its arg...
*/
switch((longOpts+retVal)->o_type) {
case ArgNone:
default:
{
/* send this option to the end of the arglist */
_getopt_ext_tailit(argc,argv,0,1);
optarg_ext = NULL;
*longOptIndex = retVal;
return((longOpts+retVal)->o_return);
}
case ArgRequired:
{
/*
* make sure the next arg is a "valid" argument
*/
if(((optind_ext + 1) == _optind_firstHandled)) {
/*
* did not find the argument
* let getopt handle it
* we will just push it to the end and continue
* looking for more extended options
*
* _getopt_ext_tailit(argc,argv,0,0);
*/
optind_ext++;
fprintf(stderr, "%s: option requires an argument -- %s\n",
argv[0],(longOpts+retVal)->o_string);
exit(0);
continue;
}
/* like getopt, we don't care what the arg looks like! */
/* send this option to the end of the arglist */
_getopt_ext_tailit(argc,argv,1,1);
optarg_ext = argv[_optind_firstRecognized + 1];
*longOptIndex = retVal;
return((longOpts+retVal)->o_return);
}
case ArgOptional:
{
if(((optind_ext + 1) == optind_last) ||
('-' == argv[optind_ext + 1][0])){
/*
* did not find the argument
*
*/
_getopt_ext_tailit(argc,argv,0,1);
optarg_ext = NULL;
*longOptIndex = retVal;
return((longOpts+retVal)->o_return);
}
/* send this option to the end of the arglist */
_getopt_ext_tailit(argc,argv,1,1);
optarg_ext = argv[optind_last + 1];
*longOptIndex = retVal;
return((longOpts+retVal)->o_return);
}
}
/* optind_ext++;*/
}
_doneWithExtendedOptions:
retVal = getopt(optind_last,argv,optstring);
optarg_ext = optarg;
/* optopt_ext = optopt; */
optind_last = _optind_firstHandled;
return(retVal);
}
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