Moved getopt from pjsua-lib to pjlib-util

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@359 74dad513-b988-da41-8d7b-12977e46ad98

5 files changed, 898 insertions, 1 deletions

diff --git a/pjlib-util/build/Makefile b/pjlib-util/build/Makefile
index bd170f00..914122d6 100644
--- a/pjlib-util/build/Makefile
+++ b/pjlib-util/build/Makefile
@@ -22,7 +22,8 @@ export _LDFLAGS := $(subst /,$(HOST_PSEP),$(PJLIB_UTIL_LIB)) \
 #
 export PJLIB_UTIL_SRCDIR = ../src/pjlib-util
 export PJLIB_UTIL_OBJS += $(OS_OBJS) $(M_OBJS) $(CC_OBJS) $(HOST_OBJS) \
-		errno.o md5.o scanner.o stun.o string.o stun.o stun_client.o xml.o
+		errno.o getopt.o md5.o scanner.o stun.o string.o stun.o stun_client.o \
+		xml.o
 export PJLIB_UTIL_CFLAGS += $(_CFLAGS)
 
 ###############################################################################
diff --git a/pjlib-util/build/pjlib_util.dsp b/pjlib-util/build/pjlib_util.dsp
index e1d89563..71ec6e4c 100644
--- a/pjlib-util/build/pjlib_util.dsp
+++ b/pjlib-util/build/pjlib_util.dsp
@@ -89,6 +89,10 @@ SOURCE="..\src\pjlib-util\errno.c"
 # End Source File

 # Begin Source File

 

+SOURCE="..\src\pjlib-util\getopt.c"

+# End Source File

+# Begin Source File

+

 SOURCE="..\src\pjlib-util\md5.c"

 # End Source File

 # Begin Source File

@@ -135,6 +139,10 @@ SOURCE="..\include\pjlib-util\errno.h"
 # End Source File

 # Begin Source File

 

+SOURCE="..\include\pjlib-util\getopt.h"

+# End Source File

+# Begin Source File

+

 SOURCE="..\include\pjlib-util\md5.h"

 # End Source File

 # Begin Source File

diff --git a/pjlib-util/include/pjlib-util.h b/pjlib-util/include/pjlib-util.h
index 6ef91193..33f8e0d3 100644
--- a/pjlib-util/include/pjlib-util.h
+++ b/pjlib-util/include/pjlib-util.h
@@ -20,6 +20,7 @@
 #define __PJLIB_UTIL_H__
 
 #include <pjlib-util/errno.h>
+#include <pjlib-util/getopt.h>
 #include <pjlib-util/md5.h>
 #include <pjlib-util/scanner.h>
 #include <pjlib-util/stun.h>
diff --git a/pjlib-util/include/pjlib-util/getopt.h b/pjlib-util/include/pjlib-util/getopt.h
new file mode 100644
index 00000000..bb8c673e
--- /dev/null
+++ b/pjlib-util/include/pjlib-util/getopt.h
@@ -0,0 +1,136 @@
+/* $Id$ */
+/* This file has now become GPL. */
+/* Declarations for pj_getopt.
+   Copyright (C) 1989,90,91,92,93,94,96,97,98 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef __PJ_GETOPT_H__
+#define __PJ_GETOPT_H__ 1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `pj_getopt' to the caller.
+   When `pj_getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *pj_optarg;
+
+/* 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 `pj_getopt'.
+
+   On entry to `pj_getopt', zero means this is the first call; initialize.
+
+   When `pj_getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `pj_optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int pj_optind;
+
+/* Callers store zero here to inhibit the error message `pj_getopt' prints
+   for unrecognized options.  */
+
+extern int pj_opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int pj_optopt;
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to pj_getopt_long or pj_getopt_long_only is a vector
+   of `struct pj_getopt_option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `pj_optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `pj_getopt'
+   returns the contents of the `val' field.  */
+
+struct pj_getopt_option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct pj_getopt_option'.  */
+
+# define no_argument		0
+# define required_argument	1
+# define optional_argument	2
+
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, `pj_optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in `pj_optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU `pj_getopt'.
+
+   The argument `--' causes premature termination of argument
+   scanning, explicitly telling `pj_getopt' that there are no more
+   options.
+
+   If OPTS begins with `--', then non-option arguments are treated as
+   arguments to the option '\0'.  This behavior is specific to the GNU
+   `pj_getopt'.  */
+
+int pj_getopt (int argc, char *const *argv, const char *shortopts);
+
+int pj_getopt_long (int argc, char *const *argv, const char *options,
+		        const struct pj_getopt_option *longopts, int *longind);
+int pj_getopt_long_only (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct pj_getopt_option *longopts, int *longind);
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* pj_getopt.h */
+
diff --git a/pjlib-util/src/pjlib-util/getopt.c b/pjlib-util/src/pjlib-util/getopt.c
new file mode 100644
index 00000000..b46c6caf
--- /dev/null
+++ b/pjlib-util/src/pjlib-util/getopt.c
@@ -0,0 +1,751 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org>
+ *
+ * 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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+
+/* 
+ * pj_getopt entry points
+ *
+ * modified by Mike Borella <mike_borella@mw.3com.com>
+ *
+ * $Id$
+ */
+
+#include <pjlib-util/getopt.h>
+#include <pj/string.h>
+
+/* Internal only.  Users should not call this directly.  */
+static
+int _getopt_internal (int argc, char *const *argv,
+		      const char *shortopts,
+		      const struct pj_getopt_option *longopts, int *longind,
+		      int long_only);
+
+/* pj_getopt_long and pj_getopt_long_only entry points for GNU pj_getopt.
+   Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#   define GETOPT_INTERFACE_VERSION 2
+
+
+int
+pj_getopt_long (int argc, char *const *argv, const char *options, 
+	     const struct pj_getopt_option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+}
+
+/* Like pj_getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+ 
+int
+pj_getopt (int argc, char * const * argv, const char * optstring)
+{
+  return _getopt_internal (argc, argv, optstring,
+			   (const struct pj_getopt_option *) 0,
+			   (int *) 0,
+			   0);
+}
+
+
+#define _(msgid)	(msgid)
+
+/* This version of `pj_getopt' appears to the caller like standard Unix `pj_getopt'
+   but it behaves differently for the user, since it allows the user
+   to intersperse the options with the other arguments.
+
+   As `pj_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 POSIXLY_CORRECT 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.  */
+
+/* For communication from `pj_getopt' to the caller.
+   When `pj_getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+char *pj_optarg = NULL;
+
+/* 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 `pj_getopt'.
+
+   On entry to `pj_getopt', zero means this is the first call; initialize.
+
+   When `pj_getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `pj_optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+/* 1003.2 says this must be 1 before any call.  */
+int pj_optind = 1;
+
+/* Formerly, initialization of pj_getopt depended on pj_optind==0, which
+   causes problems with re-calling pj_getopt as programs generally don't
+   know that. */
+
+int __getopt_initialized = 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;
+
+/* Set to an option character which was unrecognized.
+   This must be initialized on some systems to avoid linking in the
+   system's own pj_getopt implementation.  */
+
+int pj_optopt = '?';
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+   If the caller did not specify anything,
+   the default is REQUIRE_ORDER if the environment variable
+   POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+   REQUIRE_ORDER means don't recognize them as options;
+   stop option processing when the first non-option is seen.
+   This is what Unix does.
+   This mode of operation is selected by either setting the environment
+   variable POSIXLY_CORRECT, or using `+' as the first character
+   of the list of option characters.
+
+   PERMUTE is the default.  We permute the contents of ARGV as we scan,
+   so that eventually all the non-options are at the end.  This allows options
+   to be given in any order, even with programs that were not written to
+   expect this.
+
+   RETURN_IN_ORDER is an option available to programs that were written
+   to expect options and other ARGV-elements in any order and that care about
+   the ordering of the two.  We describe each non-option ARGV-element
+   as if it were the argument of an option with character code 1.
+   Using `-' as the first character of the list of option characters
+   selects this mode of operation.
+
+   The special argument `--' forces an end of option-scanning regardless
+   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+   `--' can cause `pj_getopt' to return -1 with `pj_optind' != ARGC.  */
+
+static enum
+{
+  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+} ordering;
+
+/* Value of POSIXLY_CORRECT environment variable.  */
+static char *posixly_correct;
+
+static char *
+my_index (const char *str, int chr)
+{
+  while (*str)
+    {
+      if (*str == chr)
+	return (char *) str;
+      str++;
+    }
+  return 0;
+}
+
+
+/* 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;
+
+#   define SWAP_FLAGS(ch1, ch2)
+
+/* 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,pj_optind), 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 **argv)
+{
+  int bottom = first_nonopt;
+  int middle = last_nonopt;
+  int top = pj_optind;
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	      SWAP_FLAGS (bottom + i, middle + i);
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  first_nonopt += (pj_optind - last_nonopt);
+  last_nonopt = pj_optind;
+}
+
+/* Initialize the internal data when the first call is made.  */
+
+static const char *_getopt_initialize (int argc, char *const *argv, 
+				       const char *optstring)
+{
+    PJ_UNUSED_ARG(argc);
+    PJ_UNUSED_ARG(argv);
+
+  /* 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.  */
+
+  first_nonopt = last_nonopt = pj_optind;
+
+  nextchar = NULL;
+
+  //posixly_correct = getenv ("POSIXLY_CORRECT");
+  posixly_correct = NULL;
+
+  /* Determine how to handle the ordering of options and nonoptions.  */
+
+  if (optstring[0] == '-')
+    {
+      ordering = RETURN_IN_ORDER;
+      ++optstring;
+    }
+  else if (optstring[0] == '+')
+    {
+      ordering = REQUIRE_ORDER;
+      ++optstring;
+    }
+  else if (posixly_correct != NULL)
+    ordering = REQUIRE_ORDER;
+  else
+    ordering = PERMUTE;
+
+  return optstring;
+}
+
+/* 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 `pj_getopt'
+   is called repeatedly, it returns successively each of the option characters
+   from each of the option elements.
+
+   If `pj_getopt' finds another option character, it returns that character,
+   updating `pj_optind' and `nextchar' so that the next call to `pj_getopt' can
+   resume the scan with the following option character or ARGV-element.
+
+   If there are no more option characters, `pj_getopt' returns -1.
+   Then `pj_optind' 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 `pj_opterr' 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 `pj_optarg'.  Two colons mean an option that
+   wants an optional arg; if there is text in the current ARGV-element,
+   it is returned in `pj_optarg', otherwise `pj_optarg' is set to zero.
+
+   If OPTSTRING starts with `-' or `+', it requests different methods of
+   handling the non-option ARGV-elements.
+   See the comments about RETURN_IN_ORDER and REQUIRE_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.
+   When `pj_getopt' finds a long-named option, it returns 0 if that option's
+   `flag' field is nonzero, the value of the option's `val' field
+   if the `flag' field is zero.
+
+   The elements of ARGV aren't really const, because we permute them.
+   But we pretend they're const in the prototype to be compatible
+   with other systems.
+
+   LONGOPTS is a vector of `struct pj_getopt_option' terminated by an
+   element containing a name which is zero.
+
+   LONGIND returns the index in LONGOPT of the long-named option found.
+   It is only valid when a long-named option has been found by the most
+   recent call.
+
+   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+   long-named options.  */
+
+static int
+_getopt_internal (int argc, char *const *argv, const char *optstring, 
+		  const struct pj_getopt_option *longopts, int *longind, 
+		  int long_only)
+{
+  pj_optarg = NULL;
+
+  if (pj_optind == 0 || !__getopt_initialized)
+    {
+      if (pj_optind == 0)
+	pj_optind = 1;	/* Don't scan ARGV[0], the program name.  */
+      optstring = _getopt_initialize (argc, argv, optstring);
+      __getopt_initialized = 1;
+    }
+
+  /* Test whether ARGV[pj_optind] points to a non-option argument.
+     Either it does not have option syntax, or there is an environment flag
+     from the shell indicating it is not an option.  The later information
+     is only used when the used in the GNU libc.  */
+#define NONOPTION_P (argv[pj_optind][0] != '-' || argv[pj_optind][1] == '\0')
+
+  if (nextchar == NULL || *nextchar == '\0')
+    {
+      /* Advance to the next ARGV-element.  */
+
+      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+	 moved back by the user (who may also have changed the arguments).  */
+      if (last_nonopt > pj_optind)
+	last_nonopt = pj_optind;
+      if (first_nonopt > pj_optind)
+	first_nonopt = pj_optind;
+
+      if (ordering == PERMUTE)
+	{
+	  /* 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 != pj_optind)
+	    exchange ((char **) argv);
+	  else if (last_nonopt != pj_optind)
+	    first_nonopt = pj_optind;
+
+	  /* Skip any additional non-options
+	     and extend the range of non-options previously skipped.  */
+
+	  while (pj_optind < argc && NONOPTION_P)
+	    pj_optind++;
+	  last_nonopt = pj_optind;
+	}
+
+      /* The 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 (pj_optind != argc && !pj_ansi_strcmp(argv[pj_optind], "--"))
+	{
+	  pj_optind++;
+
+	  if (first_nonopt != last_nonopt && last_nonopt != pj_optind)
+	    exchange ((char **) argv);
+	  else if (first_nonopt == last_nonopt)
+	    first_nonopt = pj_optind;
+	  last_nonopt = argc;
+
+	  pj_optind = argc;
+	}
+
+      /* If we have done all the ARGV-elements, stop the scan
+	 and back over any non-options that we skipped and permuted.  */
+
+      if (pj_optind == 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)
+	    pj_optind = first_nonopt;
+	  return -1;
+	}
+
+      /* 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 (NONOPTION_P)
+	{
+	  if (ordering == REQUIRE_ORDER)
+	    return -1;
+	  pj_optarg = argv[pj_optind++];
+	  return 1;
+	}
+
+      /* We have found another option-ARGV-element.
+	 Skip the initial punctuation.  */
+
+      nextchar = (argv[pj_optind] + 1
+		  + (longopts != NULL && argv[pj_optind][1] == '-'));
+    }
+
+  /* Decode the current option-ARGV-element.  */
+
+  /* Check whether the ARGV-element is a long option.
+
+     If long_only and the ARGV-element has the form "-f", where f is
+     a valid short option, don't consider it an abbreviated form of
+     a long option that starts with f.  Otherwise there would be no
+     way to give the -f short option.
+
+     On the other hand, if there's a long option "fubar" and
+     the ARGV-element is "-fu", do consider that an abbreviation of
+     the long option, just like "--fu", and not "-f" with arg "u".
+
+     This distinction seems to be the most useful approach.  */
+
+  if (longopts != NULL
+      && (argv[pj_optind][1] == '-'
+	  || (long_only && (argv[pj_optind][2] || !my_index (optstring, argv[pj_optind][1])))))
+    {
+      char *nameend;
+      const struct pj_getopt_option *p;
+      const struct pj_getopt_option *pfound = NULL;
+      int exact = 0;
+      int ambig = 0;
+      int indfound = -1;
+      int option_index;
+
+      for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
+	/* Do nothing.  */ ;
+
+      /* Test all long options for either exact match
+	 or abbreviated matches.  */
+      for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	if (!strncmp (p->name, nextchar, nameend - nextchar))
+	  {
+	    if ((unsigned int) (nameend - nextchar)
+		== (unsigned int) strlen (p->name))
+	      {
+		/* Exact match found.  */
+		pfound = p;
+		indfound = option_index;
+		exact = 1;
+		break;
+	      }
+	    else if (pfound == NULL)
+	      {
+		/* First nonexact match found.  */
+		pfound = p;
+		indfound = option_index;
+	      }
+	    else
+	      /* Second or later nonexact match found.  */
+	      ambig = 1;
+	  }
+
+      if (ambig && !exact)
+	{
+	  nextchar += strlen (nextchar);
+	  pj_optind++;
+	  pj_optopt = 0;
+	  return '?';
+	}
+
+      if (pfound != NULL)
+	{
+	  option_index = indfound;
+	  pj_optind++;
+	  if (*nameend)
+	    {
+	      /* Don't test has_arg with >, because some C compilers don't
+		 allow it to be used on enums.  */
+	      if (pfound->has_arg)
+		pj_optarg = nameend + 1;
+	      else
+		{
+		  nextchar += strlen (nextchar);
+
+		  pj_optopt = pfound->val;
+		  return '?';
+		}
+	    }
+	  else if (pfound->has_arg == 1)
+	    {
+	      if (pj_optind < argc)
+		pj_optarg = argv[pj_optind++];
+	      else
+		{
+		  nextchar += strlen (nextchar);
+		  pj_optopt = pfound->val;
+		  return optstring[0] == ':' ? ':' : '?';
+		}
+	    }
+	  nextchar += strlen (nextchar);
+	  if (longind != NULL)
+	    *longind = option_index;
+	  if (pfound->flag)
+	    {
+	      *(pfound->flag) = pfound->val;
+	      return 0;
+	    }
+	  return pfound->val;
+	}
+
+      /* Can't find it as a long option.  If this is not pj_getopt_long_only,
+	 or the option starts with '--' or is not a valid short
+	 option, then it's an error.
+	 Otherwise interpret it as a short option.  */
+      if (!long_only || argv[pj_optind][1] == '-'
+	  || my_index (optstring, *nextchar) == NULL)
+	{
+	  nextchar = (char *) "";
+	  pj_optind++;
+	  pj_optopt = 0;
+	  return '?';
+	}
+    }
+
+  /* Look at and handle the next short option-character.  */
+
+  {
+    char c = *nextchar++;
+    char *temp = my_index (optstring, c);
+
+    /* Increment `pj_optind' when we start to process its last character.  */
+    if (*nextchar == '\0')
+      ++pj_optind;
+
+    if (temp == NULL || c == ':')
+      {
+	pj_optopt = c;
+	return '?';
+      }
+    /* Convenience. Treat POSIX -W foo same as long option --foo */
+    if (temp[0] == 'W' && temp[1] == ';')
+      {
+	char *nameend;
+	const struct pj_getopt_option *p;
+	const struct pj_getopt_option *pfound = NULL;
+	int exact = 0;
+	int ambig = 0;
+	int indfound = 0;
+	int option_index;
+
+	/* This is an option that requires an argument.  */
+	if (*nextchar != '\0')
+	  {
+	    pj_optarg = nextchar;
+	    /* If we end this ARGV-element by taking the rest as an arg,
+	       we must advance to the next element now.  */
+	    pj_optind++;
+	  }
+	else if (pj_optind == argc)
+	  {
+	    pj_optopt = c;
+	    if (optstring[0] == ':')
+	      c = ':';
+	    else
+	      c = '?';
+	    return c;
+	  }
+	else
+	  /* We already incremented `pj_optind' once;
+	     increment it again when taking next ARGV-elt as argument.  */
+	  pj_optarg = argv[pj_optind++];
+
+	/* pj_optarg is now the argument, see if it's in the
+	   table of longopts.  */
+
+	for (nextchar = nameend = pj_optarg; *nameend && *nameend != '='; nameend++)
+	  /* Do nothing.  */ ;
+
+	/* Test all long options for either exact match
+	   or abbreviated matches.  */
+	for (p = longopts, option_index = 0; p->name; p++, option_index++)
+	  if (!strncmp (p->name, nextchar, nameend - nextchar))
+	    {
+	      if ((unsigned int) (nameend - nextchar) == strlen (p->name))
+		{
+		  /* Exact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		  exact = 1;
+		  break;
+		}
+	      else if (pfound == NULL)
+		{
+		  /* First nonexact match found.  */
+		  pfound = p;
+		  indfound = option_index;
+		}
+	      else
+		/* Second or later nonexact match found.  */
+		ambig = 1;
+	    }
+	if (ambig && !exact)
+	  {
+	    nextchar += strlen (nextchar);
+	    pj_optind++;
+	    return '?';
+	  }
+	if (pfound != NULL)
+	  {
+	    option_index = indfound;
+	    if (*nameend)
+	      {
+		/* Don't test has_arg with >, because some C compilers don't
+		   allow it to be used on enums.  */
+		if (pfound->has_arg)
+		  pj_optarg = nameend + 1;
+		else
+		  {
+		    nextchar += strlen (nextchar);
+		    return '?';
+		  }
+	      }
+	    else if (pfound->has_arg == 1)
+	      {
+		if (pj_optind < argc)
+		  pj_optarg = argv[pj_optind++];
+		else
+		  {
+		    nextchar += strlen (nextchar);
+		    return optstring[0] == ':' ? ':' : '?';
+		  }
+	      }
+	    nextchar += strlen (nextchar);
+	    if (longind != NULL)
+	      *longind = option_index;
+	    if (pfound->flag)
+	      {
+		*(pfound->flag) = pfound->val;
+		return 0;
+	      }
+	    return pfound->val;
+	  }
+	  nextchar = NULL;
+	  return 'W';	/* Let the application handle it.   */
+      }
+    if (temp[1] == ':')
+      {
+	if (temp[2] == ':')
+	  {
+	    /* This is an option that accepts an argument optionally.  */
+	    if (*nextchar != '\0')
+	      {
+		pj_optarg = nextchar;
+		pj_optind++;
+	      }
+	    else
+	      pj_optarg = NULL;
+	    nextchar = NULL;
+	  }
+	else
+	  {
+	    /* This is an option that requires an argument.  */
+	    if (*nextchar != '\0')
+	      {
+		pj_optarg = nextchar;
+		/* If we end this ARGV-element by taking the rest as an arg,
+		   we must advance to the next element now.  */
+		pj_optind++;
+	      }
+	    else if (pj_optind == argc)
+	      {
+		pj_optopt = c;
+		if (optstring[0] == ':')
+		  c = ':';
+		else
+		  c = '?';
+	      }
+	    else
+	      /* We already incremented `pj_optind' once;
+		 increment it again when taking next ARGV-elt as argument.  */
+	      pj_optarg = argv[pj_optind++];
+	    nextchar = NULL;
+	  }
+      }
+    return c;
+  }
+}
+