--- /dev/null
+/* This version of `getopt' appears to the caller like standard Unix getopt()
+ but it behaves differently for the user, since it allows the user
+ to intersperse the options with the other arguments.
+
+ As getopt() works, it permutes the elements of `argv' so that,
+ when it is done, all the options precede everything else. Thus
+ all application programs are extended to handle flexible argument order.
+
+ Setting the environment variable _POSIX_OPTION_ORDER disables permutation.
+ Then the behavior is completely standard.
+
+ GNU application programs can use a third alternative mode in which
+ they can distinguish the relative order of options and other arguments.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "getoptx.h"
+
+/* Note that on some systems, the header files above declare variables
+ for use with their native getopt facilities, and those variables have
+ the same names as we'd like to use. So we use things like optargx
+ instead of optarg to avoid the collision.
+*/
+
+/* For communication from `getopt' to the caller.
+ When `getopt' finds an option that takes an argument,
+ the argument value is returned here.
+*/
+static char *optargx = 0;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to getoptx().
+
+ On entry to getoptx(), zero means this is the first call; initialize.
+
+ When getoptx() returns EOF, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, `optindx' communicates from one call to the next
+ how much of ARGV has been scanned so far.
+*/
+
+static int optindx = 0;
+
+/* The next char to be scanned in the option-element
+ in which the last option character we returned was found.
+ This allows us to pick up the scan where we left off.
+
+ If this is zero, or a null string, it means resume the scan
+ by advancing to the next ARGV-element. */
+
+static char *nextchar;
+
+/* Callers store zero here to inhibit the error message
+ for unrecognized options.
+*/
+
+static int opterrx;
+
+/* Index in _GETOPT_LONG_OPTIONS of the long-named option actually found.
+ Only valid when a long-named option was found. */
+
+static int option_index;
+
+struct optionx * _getopt_long_options;
+
+/* Handle permutation of arguments. */
+
+/* Describe the part of ARGV that contains non-options that have
+ been skipped. `first_nonopt' is the index in ARGV of the first of them;
+ `last_nonopt' is the index after the last of them. */
+
+static int first_nonopt;
+static int last_nonopt;
+
+/* Exchange two adjacent subsequences of ARGV.
+ One subsequence is elements [first_nonopt,last_nonopt)
+ which contains all the non-options that have been skipped so far.
+ The other is elements [last_nonopt,optindx), which contains all
+ the options processed since those non-options were skipped.
+
+ `first_nonopt' and `last_nonopt' are relocated so that they describe
+ the new indices of the non-options in ARGV after they are moved. */
+
+static void
+exchange(char ** const argv) {
+ unsigned int const nonopts_size =
+ (last_nonopt - first_nonopt) * sizeof (char *);
+ char **temp = (char **) malloc (nonopts_size);
+
+ if (temp == NULL)
+ abort();
+
+ /* Interchange the two blocks of data in argv. */
+
+ bcopy (&argv[first_nonopt], temp, nonopts_size);
+ bcopy (&argv[last_nonopt], &argv[first_nonopt],
+ (optindx - last_nonopt) * sizeof (char *));
+ bcopy (temp, &argv[first_nonopt + optindx - last_nonopt],
+ nonopts_size);
+
+ /* Update records for the slots the non-options now occupy. */
+
+ first_nonopt += (optindx - last_nonopt);
+ last_nonopt = optindx;
+
+ free(temp);
+}
+\f
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+ given in OPTSTRING.
+
+ If an element of ARGV starts with '-', and is not exactly "-" or "--",
+ then it is an option element. The characters of this element
+ (aside from the initial '-') are option characters. If getoptx()
+ is called repeatedly, it returns successively each of the option characters
+ from each of the option elements.
+
+ If getoptx() finds another option character, it returns that character,
+ updating `optindx' and `nextchar' so that the next call to getoptx() can
+ resume the scan with the following option character or ARGV-element.
+
+ If there are no more option characters, getoptx() returns `EOF'.
+ Then `optindx' is the index in ARGV of the first ARGV-element
+ that is not an option. (The ARGV-elements have been permuted
+ so that those that are not options now come last.)
+
+ OPTSTRING is a string containing the legitimate option characters.
+ If an option character is seen that is not listed in OPTSTRING,
+ return '?' after printing an error message. If you set `opterrx' to
+ zero, the error message is suppressed but we still return '?'.
+
+ If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+ so the following text in the same ARGV-element, or the text of the following
+ ARGV-element, is returned in `optargx'. Two colons mean an option that
+ wants an optional arg; if there is text in the current ARGV-element,
+ it is returned in `optargx', otherwise `optargx' is set to zero.
+
+ If OPTSTRING starts with `-', it requests a different method of handling the
+ non-option ARGV-elements. See the comments about RETURN_IN_ORDER, above.
+
+ Long-named options begin with `+' instead of `-'.
+ Their names may be abbreviated as long as the abbreviation is unique
+ or is an exact match for some defined option. If they have an
+ argument, it follows the option name in the same ARGV-element, separated
+ from the option name by a `=', or else the in next ARGV-element.
+ getoptx() returns 0 when it finds a long-named option. */
+
+static int
+getoptx(int const argc,
+ char ** const argv,
+ const char * const optstring) {
+
+ optargx = 0;
+
+ /* Initialize the internal data when the first call is made.
+ Start processing options with ARGV-element 1 (since ARGV-element 0
+ is the program name); the sequence of previously skipped
+ non-option ARGV-elements is empty. */
+
+ if (optindx == 0)
+ {
+ first_nonopt = last_nonopt = optindx = 1;
+
+ nextchar = 0;
+
+ }
+
+ if (nextchar == 0 || *nextchar == 0)
+ {
+ /* If we have just processed some options following some non-options,
+ exchange them so that the options come first. */
+
+ if (first_nonopt != last_nonopt && last_nonopt != optindx)
+ exchange (argv);
+ else if (last_nonopt != optindx)
+ first_nonopt = optindx;
+
+ /* Now skip any additional non-options
+ and extend the range of non-options previously skipped. */
+
+ while (optindx < argc
+ && (argv[optindx][0] != '-'|| argv[optindx][1] == 0)
+ && (argv[optindx][0] != '+'|| argv[optindx][1] == 0))
+ optindx++;
+ last_nonopt = optindx;
+
+ /* Special ARGV-element `--' means premature end of options.
+ Skip it like a null option,
+ then exchange with previous non-options as if it were an option,
+ then skip everything else like a non-option. */
+
+ if (optindx != argc && !strcmp (argv[optindx], "--"))
+ {
+ optindx++;
+
+ if (first_nonopt != last_nonopt && last_nonopt != optindx)
+ exchange (argv);
+ else if (first_nonopt == last_nonopt)
+ first_nonopt = optindx;
+ last_nonopt = argc;
+
+ optindx = argc;
+ }
+
+ /* If we have done all the ARGV-elements, stop the scan
+ and back over any non-options that we skipped and permuted. */
+
+ if (optindx == argc)
+ {
+ /* Set the next-arg-index to point at the non-options
+ that we previously skipped, so the caller will digest them. */
+ if (first_nonopt != last_nonopt)
+ optindx = first_nonopt;
+ return EOF;
+ }
+
+ /* If we have come to a non-option and did not permute it,
+ either stop the scan or describe it to the caller and pass
+ it by.
+ */
+
+ if ((argv[optindx][0] != '-' || argv[optindx][1] == 0)
+ && (argv[optindx][0] != '+' || argv[optindx][1] == 0))
+ {
+ optargx = argv[optindx++];
+ return 1;
+ }
+
+ /* We have found another option-ARGV-element.
+ Start decoding its characters. */
+
+ nextchar = argv[optindx] + 1;
+ }
+
+ if ((argv[optindx][0] == '+' || (argv[optindx][0] == '-'))
+ )
+ {
+ struct optionx *p;
+ char *s = nextchar;
+ int exact = 0;
+ int ambig = 0;
+ struct optionx * pfound;
+ int indfound;
+
+ while (*s && *s != '=') s++;
+
+ indfound = 0; /* quite compiler warning */
+
+ /* Test all options for either exact match or abbreviated matches. */
+ for (p = _getopt_long_options, option_index = 0, pfound = NULL;
+ p->name;
+ p++, option_index++)
+ if (!strncmp (p->name, nextchar, s - nextchar))
+ {
+ if ((unsigned int)(s - nextchar) == strlen (p->name))
+ {
+ /* Exact match found. */
+ pfound = p;
+ indfound = option_index;
+ exact = 1;
+ break;
+ }
+ else if (!pfound)
+ {
+ /* First nonexact match found. */
+ pfound = p;
+ indfound = option_index;
+ }
+ else
+ /* Second nonexact match found. */
+ ambig = 1;
+ }
+
+ if (ambig && !exact)
+ {
+ fprintf (stderr, "%s: option `%s' is ambiguous\n",
+ argv[0], argv[optindx]);
+ nextchar += strlen (nextchar);
+ return '?';
+ }
+
+ if (pfound)
+ {
+ option_index = indfound;
+ optindx++;
+ if (*s)
+ {
+ if (pfound->has_arg > 0)
+ optargx = s + 1;
+ else
+ {
+ fprintf (stderr,
+ "%s: option `%c%s' doesn't allow an argument\n",
+ argv[0], argv[optindx - 1][0], pfound->name);
+ nextchar += strlen (nextchar);
+ return '?';
+ }
+ }
+ else if (pfound->has_arg)
+ {
+ if (optindx < argc)
+ optargx = argv[optindx++];
+ else if (pfound->has_arg != 2)
+ {
+ fprintf (stderr, "%s: option `%s' requires an argument\n",
+ argv[0], argv[optindx - 1]);
+ nextchar += strlen (nextchar);
+ return '?';
+ }
+ }
+ nextchar += strlen (nextchar);
+ if (pfound->flag)
+ *(pfound->flag) = pfound->val;
+ return 0;
+ }
+ if (argv[optindx][0] == '+' || index (optstring, *nextchar) == 0)
+ {
+ if (opterrx != 0)
+ fprintf (stderr, "%s: unrecognized option `%c%s'\n",
+ argv[0], argv[optindx][0], nextchar);
+ nextchar += strlen (nextchar);
+ return '?';
+ }
+ }
+
+ /* Look at and handle the next option-character. */
+
+ {
+ char c = *nextchar++;
+ char *temp = index (optstring, c);
+
+ /* Increment `optindx' when we start to process its last character. */
+ if (*nextchar == 0)
+ optindx++;
+
+ if (temp == 0 || c == ':')
+ {
+ if (opterrx != 0)
+ {
+ if (c < 040 || c >= 0177)
+ fprintf (stderr, "%s: unrecognized option, "
+ "character code 0%o\n",
+ argv[0], c);
+ else
+ fprintf (stderr, "%s: unrecognized option `-%c'\n",
+ argv[0], c);
+ }
+ return '?';
+ }
+ if (temp[1] == ':')
+ {
+ if (temp[2] == ':')
+ {
+ /* This is an option that accepts an argument optionally. */
+ if (*nextchar != 0)
+ {
+ optargx = nextchar;
+ optindx++;
+ }
+ else
+ optargx = 0;
+ nextchar = 0;
+ }
+ else
+ {
+ /* This is an option that requires an argument. */
+ if (*nextchar != 0)
+ {
+ optargx = nextchar;
+ /* If we end this ARGV-element by taking the rest
+ as an arg, we must advance to the next element
+ now.
+ */
+ optindx++;
+ }
+ else if (optindx == argc)
+ {
+ if (opterrx != 0)
+ fprintf (stderr,
+ "%s: option `-%c' requires an argument\n",
+ argv[0], c);
+ c = '?';
+ }
+ else
+ /* We already incremented `optindx' once;
+ increment it again when taking next ARGV-elt as
+ argument.
+ */
+ optargx = argv[optindx++];
+ nextchar = 0;
+ }
+ }
+ return c;
+ }
+}
+
+
+
+void
+getopt_long_onlyx(int const argc,
+ char ** const argv,
+ const char * const options,
+ struct optionx * const long_options,
+ unsigned int * const opt_index,
+ int const opterrArg,
+ int * const end_of_options,
+ const char ** const optarg_arg,
+ const char ** const unrecognized_option) {
+
+ int rc;
+
+ opterrx = opterrArg;
+ _getopt_long_options = long_options;
+ rc = getoptx(argc, argv, options);
+ if (rc == 0)
+ *opt_index = option_index;
+
+ if (rc == '?')
+ *unrecognized_option = argv[optindx];
+ else
+ *unrecognized_option = NULL;
+
+ if (rc < 0)
+ *end_of_options = 1;
+ else
+ *end_of_options = 0;
+
+ *optarg_arg = optargx;
+}
+
+
+unsigned int
+getopt_argstart(void) {
+/*----------------------------------------------------------------------------
+ This is a replacement for what traditional getopt does with global
+ variables.
+
+ You call this after getopt_long_onlyx() has returned "end of
+ options"
+-----------------------------------------------------------------------------*/
+ return optindx;
+}
+
+
+/* Getopt for GNU.
+ Copyright (C) 1987, 1989 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 1, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
projects / xmlrpc-c / blobdiff