#ifdef _MSC_VER
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#include "getopt.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef REPLACE_GETOPT
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int opterr = 1; /* if error message should be printed */
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int optind = 1; /* index into parent argv vector */
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int optopt = '?'; /* character checked for validity */
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#undef optreset /* see getopt.h */
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#define optreset __mingw_optreset
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int optreset; /* reset getopt */
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char* optarg; /* argument associated with option */
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#endif
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static void
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_vwarnx(const char* fmt, va_list ap)
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{
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(void)fprintf(stderr, "%s: ", __progname);
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if (fmt != NULL)
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(void)vfprintf(stderr, fmt, ap);
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(void)fprintf(stderr, "\n");
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}
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static void
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warnx(const char* fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_vwarnx(fmt, ap);
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va_end(ap);
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}
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/*
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* Compute the greatest common divisor of a and b.
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*/
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static int
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gcd(int a, int b)
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{
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int c;
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c = a % b;
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while (c != 0) {
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a = b;
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b = c;
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c = a % b;
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}
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return (b);
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}
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/*
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* Exchange the block from nonopt_start to nonopt_end with the block
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* from nonopt_end to opt_end (keeping the same order of arguments
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* in each block).
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*/
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static void
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permute_args(int panonopt_start, int panonopt_end, int opt_end,
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char* const* nargv)
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{
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int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
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char* swap;
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/*
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* compute lengths of blocks and number and size of cycles
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*/
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nnonopts = panonopt_end - panonopt_start;
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nopts = opt_end - panonopt_end;
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ncycle = gcd(nnonopts, nopts);
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cyclelen = (opt_end - panonopt_start) / ncycle;
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for (i = 0; i < ncycle; i++) {
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cstart = panonopt_end + i;
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pos = cstart;
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for (j = 0; j < cyclelen; j++) {
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if (pos >= panonopt_end)
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pos -= nnonopts;
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else
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pos += nopts;
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swap = nargv[pos];
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/* LINTED const cast */
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((char**)nargv)[pos] = nargv[cstart];
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/* LINTED const cast */
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((char**)nargv)[cstart] = swap;
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}
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}
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}
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#ifdef REPLACE_GETOPT
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/*
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* getopt --
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* Parse argc/argv argument vector.
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*
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* [eventually this will replace the BSD getopt]
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*/
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int getopt(int nargc, char* const* nargv, const char* options)
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{
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/*
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* We don't pass FLAG_PERMUTE to getopt_internal() since
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* the BSD getopt(3) (unlike GNU) has never done this.
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*
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* Furthermore, since many privileged programs call getopt()
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* before dropping privileges it makes sense to keep things
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* as simple (and bug-free) as possible.
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*/
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return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
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}
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#endif /* REPLACE_GETOPT */
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//extern int getopt(int nargc, char * const *nargv, const char *options);
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#ifdef __cplusplus
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}
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#endif
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/*
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* POSIX requires the `getopt' API to be specified in `unistd.h';
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* thus, `unistd.h' includes this header. However, we do not want
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* to expose the `getopt_long' or `getopt_long_only' APIs, when
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* included in this manner. Thus, close the standard __GETOPT_H__
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* declarations block, and open an additional __GETOPT_LONG_H__
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* specific block, only when *not* __UNISTD_H_SOURCED__, in which
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* to declare the extended API.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct option /* specification for a long form option... */
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{
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const char* name; /* option name, without leading hyphens */
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int has_arg; /* does it take an argument? */
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int* flag; /* where to save its status, or NULL */
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int val; /* its associated status value */
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};
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enum /* permitted values for its `has_arg' field... */
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{
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no_argument = 0, /* option never takes an argument */
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required_argument, /* option always requires an argument */
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optional_argument /* option may take an argument */
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};
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/*
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* parse_long_options --
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* Parse long options in argc/argv argument vector.
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* Returns -1 if short_too is set and the option does not match long_options.
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*/
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static int
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parse_long_options(char* const* nargv, const char* options,
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const struct option* long_options, int* idx, int short_too)
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{
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char *current_argv, *has_equal;
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size_t current_argv_len;
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int i, ambiguous, match;
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#define IDENTICAL_INTERPRETATION(_x, _y) \
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(long_options[(_x)].has_arg == long_options[(_y)].has_arg && long_options[(_x)].flag == long_options[(_y)].flag && long_options[(_x)].val == long_options[(_y)].val)
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current_argv = place;
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match = -1;
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ambiguous = 0;
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optind++;
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if ((has_equal = strchr(current_argv, '=')) != NULL) {
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/* argument found (--option=arg) */
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current_argv_len = has_equal - current_argv;
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has_equal++;
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} else
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current_argv_len = strlen(current_argv);
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for (i = 0; long_options[i].name; i++) {
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/* find matching long option */
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if (strncmp(current_argv, long_options[i].name,
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current_argv_len))
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continue;
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if (strlen(long_options[i].name) == current_argv_len) {
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/* exact match */
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match = i;
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ambiguous = 0;
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break;
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}
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/*
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* If this is a known short option, don't allow
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* a partial match of a single character.
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*/
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if (short_too && current_argv_len == 1)
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continue;
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if (match == -1) /* partial match */
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match = i;
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else if (!IDENTICAL_INTERPRETATION(i, match))
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ambiguous = 1;
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}
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if (ambiguous) {
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/* ambiguous abbreviation */
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if (PRINT_ERROR)
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warnx(ambig, (int)current_argv_len,
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current_argv);
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optopt = 0;
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return (BADCH);
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}
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if (match != -1) { /* option found */
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if (long_options[match].has_arg == no_argument
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&& has_equal) {
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if (PRINT_ERROR)
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warnx(noarg, (int)current_argv_len,
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current_argv);
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/*
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* XXX: GNU sets optopt to val regardless of flag
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*/
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if (long_options[match].flag == NULL)
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optopt = long_options[match].val;
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else
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optopt = 0;
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return (BADARG);
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}
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if (long_options[match].has_arg == required_argument || long_options[match].has_arg == optional_argument) {
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if (has_equal)
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optarg = has_equal;
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else if (long_options[match].has_arg == required_argument) {
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/*
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* optional argument doesn't use next nargv
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*/
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optarg = nargv[optind++];
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}
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}
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if ((long_options[match].has_arg == required_argument)
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&& (optarg == NULL)) {
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/*
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* Missing argument; leading ':' indicates no error
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* should be generated.
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*/
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if (PRINT_ERROR)
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warnx(recargstring,
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current_argv);
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/*
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* XXX: GNU sets optopt to val regardless of flag
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*/
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if (long_options[match].flag == NULL)
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optopt = long_options[match].val;
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else
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optopt = 0;
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--optind;
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return (BADARG);
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}
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} else { /* unknown option */
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if (short_too) {
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--optind;
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return (-1);
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}
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if (PRINT_ERROR)
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warnx(illoptstring, current_argv);
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optopt = 0;
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return (BADCH);
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}
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if (idx)
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*idx = match;
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if (long_options[match].flag) {
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*long_options[match].flag = long_options[match].val;
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return (0);
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} else
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return (long_options[match].val);
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#undef IDENTICAL_INTERPRETATION
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}
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/*
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* getopt_internal --
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* Parse argc/argv argument vector. Called by user level routines.
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*/
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static int
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getopt_internal(int nargc, char* const* nargv, const char* options,
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const struct option* long_options, int* idx, int flags)
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{
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char* oli; /* option letter list index */
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int optchar, short_too;
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static int posixly_correct = -1;
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if (options == NULL)
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return (-1);
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/*
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* XXX Some GNU programs (like cvs) set optind to 0 instead of
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* XXX using optreset. Work around this braindamage.
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*/
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if (optind == 0)
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optind = optreset = 1;
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/*
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* Disable GNU extensions if POSIXLY_CORRECT is set or options
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* string begins with a '+'.
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*
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* CV, 2009-12-14: Check POSIXLY_CORRECT anew if optind == 0 or
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* optreset != 0 for GNU compatibility.
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*/
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if (posixly_correct == -1 || optreset != 0)
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posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
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if (*options == '-')
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flags |= FLAG_ALLARGS;
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else if (posixly_correct || *options == '+')
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flags &= ~FLAG_PERMUTE;
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if (*options == '+' || *options == '-')
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options++;
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optarg = NULL;
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if (optreset)
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nonopt_start = nonopt_end = -1;
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start:
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if (optreset || !*place) { /* update scanning pointer */
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optreset = 0;
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if (optind >= nargc) { /* end of argument vector */
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place = EMSG;
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if (nonopt_end != -1) {
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/* do permutation, if we have to */
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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optind -= nonopt_end - nonopt_start;
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} else if (nonopt_start != -1) {
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/*
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* If we skipped non-options, set optind
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* to the first of them.
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*/
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optind = nonopt_start;
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}
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nonopt_start = nonopt_end = -1;
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return (-1);
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}
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if (*(place = nargv[optind]) != '-' || (place[1] == '\0' && strchr(options, '-') == NULL)) {
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place = EMSG; /* found non-option */
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if (flags & FLAG_ALLARGS) {
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/*
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* GNU extension:
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* return non-option as argument to option 1
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*/
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optarg = nargv[optind++];
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return (INORDER);
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}
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if (!(flags & FLAG_PERMUTE)) {
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/*
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* If no permutation wanted, stop parsing
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* at first non-option.
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*/
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return (-1);
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}
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/* do permutation */
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if (nonopt_start == -1)
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nonopt_start = optind;
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else if (nonopt_end != -1) {
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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nonopt_start = optind - (nonopt_end - nonopt_start);
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nonopt_end = -1;
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}
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optind++;
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/* process next argument */
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goto start;
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}
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if (nonopt_start != -1 && nonopt_end == -1)
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nonopt_end = optind;
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/*
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* If we have "-" do nothing, if "--" we are done.
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*/
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if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
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optind++;
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place = EMSG;
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/*
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* We found an option (--), so if we skipped
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* non-options, we have to permute.
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*/
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if (nonopt_end != -1) {
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permute_args(nonopt_start, nonopt_end,
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optind, nargv);
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optind -= nonopt_end - nonopt_start;
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}
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nonopt_start = nonopt_end = -1;
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return (-1);
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}
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}
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/*
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* Check long options if:
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* 1) we were passed some
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* 2) the arg is not just "-"
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* 3) either the arg starts with -- we are getopt_long_only()
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*/
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if (long_options != NULL && place != nargv[optind] && (*place == '-' || (flags & FLAG_LONGONLY))) {
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short_too = 0;
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if (*place == '-')
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place++; /* --foo long option */
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else if (*place != ':' && strchr(options, *place) != NULL)
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short_too = 1; /* could be short option too */
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optchar = parse_long_options(nargv, options, long_options,
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idx, short_too);
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if (optchar != -1) {
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place = EMSG;
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return (optchar);
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}
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}
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if ((optchar = (int)*place++) == (int)':' || (optchar == (int)'-' && *place != '\0') || (oli = (char*)strchr(options, optchar)) == NULL) {
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/*
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* If the user specified "-" and '-' isn't listed in
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* options, return -1 (non-option) as per POSIX.
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* Otherwise, it is an unknown option character (or ':').
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*/
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if (optchar == (int)'-' && *place == '\0')
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return (-1);
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if (!*place)
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++optind;
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if (PRINT_ERROR)
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warnx(illoptchar, optchar);
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optopt = optchar;
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return (BADCH);
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}
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if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
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/* -W long-option */
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if (*place) /* no space */
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/* NOTHING */;
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else if (++optind >= nargc) { /* no arg */
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place = EMSG;
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if (PRINT_ERROR)
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warnx(recargchar, optchar);
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optopt = optchar;
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return (BADARG);
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} else /* white space */
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place = nargv[optind];
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optchar = parse_long_options(nargv, options, long_options,
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idx, 0);
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place = EMSG;
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return (optchar);
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}
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if (*++oli != ':') { /* doesn't take argument */
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if (!*place)
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++optind;
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} else { /* takes (optional) argument */
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optarg = NULL;
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if (*place) /* no white space */
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optarg = place;
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else if (oli[1] != ':') { /* arg not optional */
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if (++optind >= nargc) { /* no arg */
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place = EMSG;
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if (PRINT_ERROR)
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warnx(recargchar, optchar);
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optopt = optchar;
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return (BADARG);
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} else
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optarg = nargv[optind];
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}
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place = EMSG;
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++optind;
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}
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/* dump back option letter */
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return (optchar);
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}
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/*
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* getopt_long --
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* Parse argc/argv argument vector.
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*/
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int getopt_long(int nargc, char* const* nargv, const char* options,
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const struct option* long_options, int* idx)
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{
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return (getopt_internal(nargc, nargv, options, long_options, idx,
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FLAG_PERMUTE));
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}
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/*
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* getopt_long_only --
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* Parse argc/argv argument vector.
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*/
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int getopt_long_only(int nargc, char* const* nargv, const char* options,
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const struct option* long_options, int* idx)
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{
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return (getopt_internal(nargc, nargv, options, long_options, idx,
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FLAG_PERMUTE | FLAG_LONGONLY));
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}
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//extern int getopt_long(int nargc, char * const *nargv, const char *options,
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// const struct option *long_options, int *idx);
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//extern int getopt_long_only(int nargc, char * const *nargv, const char *options,
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// const struct option *long_options, int *idx);
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/*
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* Previous MinGW implementation had...
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif
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