path: root/support/dktools/dk-sort.c

/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk-sort.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk-sort.c The dk-sort module.
*/


#line 8 "dk-sort.ctr"

#include "dk4conf.h"

#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define WINDOWS_H_INCLUDED
#endif
#endif

#if DK4_HAVE_SIGNAL_H
#ifndef SIGNAL_H_INCLUDED
#include <signal.h>
#define SIGNAL_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_IO_H
#ifndef IO_H_INCLUDED
#include <io.h>
#define	IO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_FCNTL_H
#ifndef FCNTL_H_INCLUDED
#include <fcntl.h>
#define	FCNTL_H_INCLUDED 1
#endif
#endif

#include "dk4types.h"
#include "dk4const.h"
#include "dk4vers.h"
#include "dk4app.h"
#include "dk4aopt.h"
#include "dk4mem.h"
#include "dk4mema.h"
#include "dk4fput.h"
#include "dk4mpl.h"
#include "dk4maiddbl.h"
#if 0
#include "dk4maidhmu.h"
#include "dk4maiddmu.h"
#include "dk4maiddmi.h"
#endif
#include "dk4maidddu.h"
#include "dk4maidhdu.h"
#include "dk4maidddi.h"
#include "dk4maodd.h"
#include "dk4enc.h"
#include "dk4strd.h"
#include "dk4strda.h"
#include "dk4tspdk.h"
#include "dk4fopda.h"
#include "dk4pathd.h"
#include "dk4filed.h"





#line 69 "dk-sort.ctr"



/**	Structure to store one line, optionally with evaluation result.
*/
typedef struct {
  dkChar		*line;	/**< Text line. */
  dkChar		*fts;	/**< File type suffix. */
  union {
    dk4_um_t		 u;	/**< Unsigned number at start of line. */
    dk4_im_t		 i;	/**< Signed number at start of line. */
    double		 d;	/**< Floating point number at start of line. */
  } value;			/**< Value at start of line. */
  char			 h;	/**< Flag: Have value. */
} dk_sort_line_t;


/**	Default help text, shown if help file is not found.
*/
static const dkChar * const	dk_sort_help_text[] = {
dkT(""),
dkT("Sort text line by line"),
dkT(""),
dkT("dk-sort [<options>] [<file(s)>]"),
dkT(""),
dkT("Options:"),
dkT("-i <encoding>\t--input-encoding=<encoding>\tExpected input encoding."),
dkT("-c\t\t--case-insensitive\t\tCase-insensitive comparisons."),
dkT("-b\t\t--ignore-leading-blanks\t\tIgnore leading whitespaces."),
dkT("-w\t\t--normalize\t\t\tNormalize text lines."),
dkT("-e\t\t--suppress-empty-lines\t\tSuppress output for empty lines."),
dkT("-t\t\t--file-type\t\t\tSort by file type."),
dkT("-s <size>\t--skip-words=<size>\t\tNumber of words to skip."),
dkT("-n\t\t--number\t\t\tLeading signed integer values."),
dkT("-u\t\t--unsigned\t\t\tLeading unsigned integer values."),
dkT("-x\t\t--hex\t\t\t\tLeading hexadecimal numbers."),
dkT("-f\t\t--float\t\t\t\tLeading floating point numbers."),
dkT("-v\t\t--value-lines-first\t\tLines containing numbers first."),
dkT("-m\t\t--merge-equal-lines\t\tMerge equal lines."),
dkT("-r\t\t--reverse\t\t\tReverse output order."),
dkT("-l <size>\t--line-size=<size>\t\tLine buffer sizes."),
dkT("-R\t\t--reset\t\t\t\tIgnore preferences values."),
dkT(""),
dkT("--help\t\t\t\t\t\tShow this short help text."),
dkT("--manual\t\t\t\t\t*** SHOW FULL MANUAL. ***"),
dkT("--version\t\t\t\t\tShow version information."),
dkT("--license\t\t\t\t\tShow license information."),
dkT(""),
dkT("http://dktools.sourceforge.net"),
dkT(""),
NULL


#line 121 "dk-sort.ctr"
};



/**	License text.
*/
static const dkChar * const	dk_sort_license_text[] = {
dkT("This software uses code from the following projects, either directly or as"),
dkT("a library:"),
dkT(""),
dkT("dktools\t\tDirk Krause's tools and libraries."),
dkT("\t\tSee http://dktools.sourceforge.net/ for more information."),
#if DK4_HAVE_ZLIB_H
dkT(""),
dkT("zlib\t\tData compression library."),
dkT("\t\tSee http://www.zlib.net/ for more information."),
#endif
#if DK4_HAVE_BZLIB_H
dkT(""),
dkT("bzip2\t\tData compression program and library."),
dkT("\t\tSee http://www.bzip.org/ for more information."),
#endif
dkT(""),
dkT("All the licenses below apply to the program."),
dkT("Licenses for used libraries are shown as found on my Scientific Linux 6.x"),
dkT("computer in the /usr/share/doc directory on 2015-04-01. Check the project"),
dkT("homepages of the used libraries for additional information and/or updated"),
dkT("license terms."),
dkT(""),
dkT(""),
dkT("DK tools and libraries license"),
dkT("=============================="),
dkT("Copyright (c) 2015-2016, Dirk Krause"),
dkT("All rights reserved."),
dkT(""),
dkT("Redistribution and use in source and binary forms, with or without"),
dkT("modification, are permitted provided that the following conditions are met:"),
dkT(""),
dkT("* Redistributions of source code must retain the above copyright notice,"),
dkT("  this list of conditions and the following disclaimer."),
dkT("* Redistributions in binary form must reproduce the above copyright"),
dkT("  notice, this list of conditions and the following disclaimer in the"),
dkT("  documentation and/or other materials provided with the distribution."),
dkT("* Neither the name of the Dirk Krause nor the names of contributors may be"),
dkT("  used to endorse or promote products derived from this software without"),
dkT("  specific prior written permission."),
dkT(""),
dkT("THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\""),
dkT("AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE"),
dkT("IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE"),
dkT("ARE DISCLAIMED."),
dkT(""),
dkT("IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,"),
dkT("INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,"),
dkT("BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,"),
dkT("DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY"),
dkT("OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING"),
dkT("NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,"),
dkT("EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."),
#if DK4_HAVE_ZLIB_H
dkT(""),
dkT(""),
dkT("Zlib license"),
dkT("============"),
dkT("(C) 1995-2004 Jean-loup Gailly and Mark Adler"),
dkT(""),
dkT("This software is provided 'as-is', without any express or implied"),
dkT("warranty.  In no event will the authors be held liable for any damages"),
dkT("arising from the use of this software."),
dkT(""),
dkT("Permission is granted to anyone to use this software for any purpose,"),
dkT("including commercial applications, and to alter it and redistribute it"),
dkT("freely, subject to the following restrictions:"),
dkT(""),
dkT("1. The origin of this software must not be misrepresented; you must not"),
dkT("   claim that you wrote the original software. If you use this software"),
dkT("   in a product, an acknowledgment in the product documentation would be"),
dkT("   appreciated but is not required."),
dkT("2. Altered source versions must be plainly marked as such, and must not be"),
dkT("   misrepresented as being the original software."),
dkT("3. This notice may not be removed or altered from any source distribution."),
dkT(""),
dkT("Jean-loup Gailly        Mark Adler"),
dkT("jloup@gzip.org          madler@alumni.caltech.edu"),
#endif
#if DK4_HAVE_BZLIB_H
dkT(""),
dkT(""),
dkT("Bzip2 and libbzip2 library license"),
dkT("=================================="),
dkT("This program, \"bzip2\", the associated library \"libbzip2\", and all"),
dkT("documentation, are copyright (C) 1996-2007 Julian R Seward.  All"),
dkT("rights reserved."),
dkT(""),
dkT("Redistribution and use in source and binary forms, with or without"),
dkT("modification, are permitted provided that the following conditions"),
dkT("are met:"),
dkT(""),
dkT("1. Redistributions of source code must retain the above copyright"),
dkT("   notice, this list of conditions and the following disclaimer."),
dkT(""),
dkT("2. The origin of this software must not be misrepresented; you must "),
dkT("   not claim that you wrote the original software.  If you use this "),
dkT("   software in a product, an acknowledgment in the product "),
dkT("   documentation would be appreciated but is not required."),
dkT(""),
dkT("3. Altered source versions must be plainly marked as such, and must"),
dkT("   not be misrepresented as being the original software."),
dkT(""),
dkT("4. The name of the author may not be used to endorse or promote "),
dkT("   products derived from this software without specific prior written "),
dkT("   permission."),
dkT(""),
dkT("THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS"),
dkT("OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED"),
dkT("WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE"),
dkT("ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY"),
dkT("DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL"),
dkT("DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE"),
dkT("GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS"),
dkT("INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,"),
dkT("WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING"),
dkT("NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS"),
dkT("SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."),
dkT(""),
dkT("Julian Seward, jseward@bzip.org"),
dkT("bzip2/libbzip2 version 1.0.5 of 10 December 2007"),
#endif
dkT(""),
NULL


#line 252 "dk-sort.ctr"
};



/**	Command line options.
*/
static const dk4_option_specification_t dk_sort_options[] = {
  { dkT('R'), dkT("reset"),			DK4_OPT_ARG_NONE },
  { dkT('i'), dkT("input-encoding"),		DK4_OPT_ARG_STRING },
  { dkT('c'), dkT("case-insensitive"),		DK4_OPT_ARG_NONE },
  { dkT('b'), dkT("ignore-leading-blanks"),	DK4_OPT_ARG_NONE },
  { dkT('w'), dkT("normalize"),			DK4_OPT_ARG_NONE },
  { dkT('t'), dkT("file-type"), 		DK4_OPT_ARG_NONE },
  { dkT('s'), dkT("skip-words"),		DK4_OPT_ARG_SIZE },
  { dkT('n'), dkT("number"),			DK4_OPT_ARG_NONE },
  { dkT('u'), dkT("unsigned"),			DK4_OPT_ARG_NONE },
  { dkT('x'), dkT("hex"),			DK4_OPT_ARG_NONE },
  { dkT('f'), dkT("float"),			DK4_OPT_ARG_NONE },
  { dkT('v'), dkT("value-lines-first"),		DK4_OPT_ARG_NONE },
  { dkT('m'), dkT("merge-equal-lines"),		DK4_OPT_ARG_NONE }, 
  { dkT('r'), dkT("reverse"),			DK4_OPT_ARG_NONE },
  { dkT('l'), dkT("line-size"),			DK4_OPT_ARG_SIZE },
  { dkT('e'), dkT("suppress-empty-lines"),	DK4_OPT_ARG_NONE }
};



/**	Number of elements in the dk_sort_options array.
*/
static const size_t dk_sort_sz_options =
sizeof(dk_sort_options)/sizeof(dk4_option_specification_t);



/**	Constant text strings used by the module, not localized.
*/
static const dkChar * const	dk_sort_kwnl[] = {
/* 0 */
dkT("dktools"),

/* 1 */
dkT("dk-sort.txt"),

/* 2 */
dkT("dk-sort.str"),

/* 3 */
dkT("stdin"),

/* 4 */
dkT("rb"),

/* 5 */
dkT("\\"),

/* 6 */
dkT("line.size"),

NULL


#line 319 "dk-sort.ctr"
};



/**	Text strings used by program, localized versions used if found.
*/
static const dkChar * const	dk_sort_kw_def[] = {
/* 0 */
dkT("Failed to set up signal handlers!"),

/* 1 */
dkT("Failed to restore previous signal handlers!"),

/* 2 */
dkT("Encoding error!"),

/* 3 */
dkT("Decoding error!"),

/* 4 */
dkT("Processing error!"),

/* 5 */
dkT("Encoding error!\n\tByte: "),

/* 6 */
dkT("Decoding error!\n\tByte: "),

/* 7 */
dkT("Processing error!\n\tByte: "),

/* 8 */
dkT(",\n\tCharacter: "),

/* 9 */
dkT(",\n\tPosition in line: "),

/* 10 */
dkT("."),

/* 11 */
dkT("Options -u, -x, and -f are mutually exclusive!"),

/* 12 */
dkT("Illegal input encoding: \""),

/* 13 */
dkT("\"!"),

/* 14 */
dkT("Failed to initialize text stream processing!"),

NULL


#line 364 "dk-sort.ctr"
};



/**	Default buffer to use if sizes up to 1024 are specified.
*/
static dkChar	input_line_buffer[1024];



/**	Input buffer really to use.
*/
static dkChar	*ibptr	=	input_line_buffer;



/**	Allocated input buffer address for line sizes larger than 1024.
*/
static dkChar	*allocated_buffer	=	NULL;



/**	Localized message texts.
*/
static const dkChar * const	*dk_sort_msg	=	dk_sort_kw_def;



/**	Application structure.
*/
static dk4_app_t	*app	=	NULL;



/**	Line storage.
*/
static dk4_sto_t	*lsto	=	NULL;



/**	Iterator to traverse line storage.
*/
static dk4_sto_it_t	*lsti	=	NULL;



/**	Number of strings in dk_sort_msg array.
*/
static size_t			 dk_sort_sz_msg	=
sizeof(dk_sort_kw_def)/sizeof(DK4_PCDKCHAR) - 1;


/**	Size of ibptr buffer.
*/
static size_t	 ibsz	=	DK4_SIZEOF(input_line_buffer,dkChar);



/**	Number of words to skip when processing file names.
*/
static size_t	 skip_words	=	0;



/**	Flag: Case-insensitive comparison.
*/
static int	 case_insensitive	=	0;



/**	How to handle blanks:
	0 leave as is,
	1 remove leading and trailing blanks,
	2 normalize lines.
*/
static int	 handle_blanks		=	0;



/**	How to handle leading values:
	0 do not use numeric values,
	1 use signed integers
	2 use unsigned integers
	3 use unsigned integers, specified in hexadecimal notation
	4 use floating point numbers.
*/
static int	 handle_values		=	0;



/**	Flag: Sort files type file type suffix.
*/
static int	 handle_file_type	=	0;



/**	Flag: Show lines containing values before lines not containing
	a value. Default is to show lines without a value first.
*/
static int	 value_first		=	0;



/**	Flag: Merge equal lines.
*/
static int	 merge			=	0;



/**	Flag: Reverse search order.
*/
static int	 reversed		=	0;



/**	Flag: Suppress empty lines.
*/
static int	 suppress_empty		=	0;


/**	Expected input encoding.
*/
static int	 input_encoding		=	DK4_FILE_ENCODING_ASCII;



/**	Flag: Already reported decoding errors.
*/
static int	dk_sort_had_decoding_errors	=	0;



/**	Flag: Already reported encoding errors.
*/
static int	dk_sort_had_encoding_errors	=	0;



/**	Flag: Already reported processing errors.
*/
static int	dk_sort_had_proc_errors	=	0;



/**	Exit status code returned by the main function.
*/
static int exval	=	EXIT_FAILURE;



#ifdef SIGPIPE
/**	Indicator: SIGPIPE signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_pipe	=	0;
#endif

/**	Indicator: SIGINT signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_int	=	0;

/**	Indicator: SIGTERM signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_term	=	0;



/**	Pass a volatile pointer to an atomic integer.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ptr	Address of atomic integer variable.
	@return	The unmodified pointer.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t *
sig_pass_pointer(DK4_VOLATILE dk4_sig_atomic_t *ptr)
{
  return ptr;
}



#ifdef SIGPIPE
/**	Handler for SIGPIPE signal.
	@param	signo	Signal number (always SIGPIPE, ignored).
*/
static
void
sig_handler_pipe(int signo)
{
  *sig_pass_pointer(&sig_had_pipe) = 1;
}
#endif

/**	Handler for SIGINT signal.
	@param	signo	Signal number (always SIGINT, ignored).
*/
static
void
sig_handler_int(int signo)
{
  *sig_pass_pointer(&sig_had_int) = 1;
}

/**	Handler for SIGTERM signal.
	@param	signo	Signal number (always SIGTERM, ignored).
*/
static
void
sig_handler_term(int signo)
{
  *sig_pass_pointer(&sig_had_term) = 1;
}

/**	Read value from volatile atomic type.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ap	Pointer to volatile atomic variable.
	@return	Contents of the variable.
*/
static
dk4_sig_atomic_t
sig_read_atomic(DK4_VOLATILE dk4_sig_atomic_t *ap)
{
  return (*ap);
}

/**	Check whether we can continue or if a signal was received.
	@param	check_pipe	Flag: Check for occured SIGPIPE signal too.
	@return	1 if the program can continue, 0 if a signal was received.
*/
static
int
sig_can_continue(int check_pipe)
{
  int		back = 1;
#ifdef SIGPIPE
  if (0 != check_pipe) {
    if (0 != sig_read_atomic(&sig_had_pipe)) { back = 0; }
  }
#endif
  if (0 != sig_read_atomic(&sig_had_int )) { back = 0; }
  if (0 != sig_read_atomic(&sig_had_term)) { back = 0; }
  return back;
}



/**	Check whether we can continue.
	@return	1 for yes, 0 for no.
*/
static
int
dk_sort_can_continue(void)
{
  int		back	=	1;
  if (0 == sig_can_continue(1)) {
    back = 0;
  }
  return back;
}



/**	Delete a storage node.
	@param	ptr	Node to delete.
*/
static
void
dk_sort_delete_node(dk_sort_line_t *ptr)
{
  

#line 644 "dk-sort.ctr"
  if (NULL != ptr) {
    dk4mem_release(ptr->line);
    dk4mem_free(ptr);
  }
  

#line 649 "dk-sort.ctr"
}



/**	Create storage node for a text line.
	@param	line	Text line to store.
	@return	Pointer to new node on success, NULL on error.
*/
static
dk_sort_line_t *
dk_sort_new_node(dkChar *line)
{
  dk_sort_line_t	*back	=	NULL;
  dkChar		*lines	=	NULL;	/* Start of line */
  const dkChar		*endptr	=	NULL;	/* First text after value */
  double		 d;			/* Evaluation double */
  dk4_um_t		 u;			/* Evaluation unsigned */
  dk4_im_t		 i;			/* Evaluation integer */
  

#line 668 "dk-sort.ctr"
  /*	Normalize or remove leading and trailing whitespace if required.
  */
  if (NULL != line) {
    dk4str_delnl(line);
    if (0 < handle_blanks) {
      lines = dk4str_start(line, NULL);
      if (NULL != lines) {
        line = lines;
        switch (handle_blanks) {
          case 1: {
	    dk4str_rtwh(line, NULL);
	  } break;
	  case 2: {
	    dk4str_normalize(line, NULL);
	  } break;
        }
      } else {
        *line = dkT('\0');
      }
    }
  }
  if ((0 != suppress_empty) && (NULL != line)) {
    lines = dk4str_start(line, NULL);
    if (NULL == lines) {
      line = NULL;
    }
  }

  /*	Create node.
  */
  if (NULL != line) {
    back = dk4mem_new_app(dk_sort_line_t,1,app);
    if (NULL != back) {
      back->fts	 = NULL;
      back->h    = 0x00;
      back->line = dk4str_dup_app(line, app);
      if (NULL != back->line) {
        if (0 != handle_file_type) {
	  back->fts = dk4path_get_suffix(back->line, NULL);
	}
      } else {
        dk_sort_delete_node(back);
	back = NULL;
	exval = EXIT_FAILURE;
	/* ERROR: Memory, already reported */
      }
    } else {
      exval = EXIT_FAILURE;
      /* ERROR: Memory, already reported */
    }
  }

  /*	Evaluate node if necessary.
  */
  if (NULL != back) {
    switch (handle_values) {
      case 4: {
        d = 0.0;
        if (0 != dk4ma_input_dk_double(&d, line, &endptr, 2, NULL)) {
	  (back->value).d = d;
	  back->h = 0x01;
	}
      } break;
      case 3: {
        u = (dk4_um_t)0UL;
	if (0 != dk4ma_input_dk_hex_dk4_um_t(&u, line, &endptr, 2, NULL)) {
	  (back->value).u = u;
	  back->h = 0x01;
	}
      } break;
      case 2: {
        u = (dk4_um_t)0UL;
	if (0 != dk4ma_input_dk_dec_dk4_um_t(&u, line, &endptr, 2, NULL)) {
	  (back->value).u = u;
	  back->h = 0x01;
	}
      } break;
      case 1: {
        i = (dk4_im_t)0L;
	if (0 != dk4ma_input_dk_dec_dk4_im_t(&i, line, &endptr, 2, NULL)) {
	  (back->value).i = i;
	  back->h = 0x01;
	}
      } break;
    }
  }
  

#line 755 "dk-sort.ctr"
  return back;
}



static
int
dk_sort_is_dot_file(const dkChar *fn)
{
  const dkChar	*fns	= NULL;
  const dkChar	*ptr	= NULL;
  int		 back	= 0;
  

#line 768 "dk-sort.ctr"
  ptr = fn;
  while (dkT('\0') != *ptr) {
#if DK4_HAVE_BACKSLASH_AS_SEP
    if (dkT('\\') == *ptr) { fns = ptr; }
#else
    if (dkT('/') == *ptr) { fns = ptr; }
#endif
    ptr++;
  }
  if (NULL == fns) { fns = fn; }
  else { fns++; }
  

#line 780 "dk-sort.ctr"
  if (dkT('.') == *fns) {
    back = 1;
  }
#if DK4_ON_WINDOWS
  if (dkT('_') == *fns) {
    back = 1;
  }
#endif
  

#line 789 "dk-sort.ctr"
  return back;
}



/**	Compare two storage nodes.
	@param	l	Left node.
	@param	r	Right node.
	@param	cr	Comparison criteria, ignored here.
	@return	Comparison result.
*/
static
int
dk_sort_compare_nodes(const void *l, const void *r, int cr)
{
  int		 	 back = 0;
  dk_sort_line_t	*pl;
  dk_sort_line_t	*pr;
  const dkChar		*fnleft;
  const dkChar		*fnright;
  

#line 810 "dk-sort.ctr"
  if (NULL != l) {
    if (NULL != r) {
      pl = (dk_sort_line_t *)l;
      pr = (dk_sort_line_t *)r;

      /*	Check file type suffix if required.
      */
      if (0 != handle_file_type) {
        fnleft = dk4str_skip(pl->line, skip_words);
	fnright = dk4str_skip(pr->line, skip_words);
	if (NULL != fnleft) {		

#line 821 "dk-sort.ctr"
	  if (NULL != fnright) {	

#line 822 "dk-sort.ctr"
	    if (0 != dk4file_is_directory(fnleft, NULL)) {
	      if (0 == dk4file_is_directory(fnright, NULL)) {
	        back = -1;
	      }
	    } else {
	      if (0 != dk4file_is_directory(fnright, NULL)) {
	        back = 1;
	      }
	    }
	    if (0 == back) {
	      if (0 != dk_sort_is_dot_file(fnleft)) {
	        if (0 == dk_sort_is_dot_file(fnright)) {
		  back = -1;
		}
	      } else {
	        if (0 != dk_sort_is_dot_file(fnright)) {
		  back = 1;
		}
	      }
	    }
	  } else {
	    back = 1;
	  }
	} else {
	  if (NULL != fnright) {
	    back = -1;
	  }
	}
        if (0 == back) {
	  if (NULL != pl->fts) {
	    if (NULL != pr->fts) {
	      back = dk4str_pathcmp(pl->fts, pr->fts);
#if DK4_HAVE_CASE_INSENSITIVE_PATHNAMES
	      if (0 == back) {
	        back = dk4str_cmp(pl->fts, pr->fts);
	      }
#endif
	    } else {
	      back = 1;
	    }
	  } else {
	    if (NULL != pr->fts) {
	      back = -1;
	    }
	  }
	}
      }

      /*	Check evaluation if required.
      */
      if (0 == back) {
        if (0 != handle_values) {
          if (0x00 != pl->h) {
	    if (0x00 != pr->h) {	/* both values */
	      switch (handle_values) {
	        case 4: {
	          if ((pl->value).d < (pr->value).d) {
		    back = -1;
		  } else {
		    if ((pl->value).d > (pr->value).d) {
		      back = 1;
		    }
		  }
	        } break;
	        case 2: case 3: {
	          if ((pl->value).u < (pr->value).u) {
		    back = -1;
		  } else {
		    if ((pl->value).u > (pr->value).u) {
		      back = 1;
		    }
		  }
	        } break;
	        case 1: {
	          if ((pl->value).i < (pr->value).i) {
		    back = -1;
		  } else {
		    if ((pl->value).i > (pr->value).i) {
		      back = 1;
		    }
		  }
	        } break;
	      }
	    } else {		/* only left value */
	      back = ((0 != value_first) ? -1 : 1);
	    }
	  } else {
	    if (0x00 != pr->h) {	/* only right value */
	      back = ((0 != value_first) ? 1 : -1);
	    }
	  }
        }
      }

      /*	String comparison
      */
      if (0 == back) {
        if (0 != case_insensitive) {
	  back = dk4str_casecmp(pl->line, pr->line);
	  if (0 == back) {
	    back = dk4str_cmp(pl->line, pr->line);
	  }
	} else {
	  back = dk4str_cmp(pl->line, pr->line);
	}
      }

      /*	Reverse order if necessary.
      */
      if (0 != reversed) { back = -1 * back; }
    } else {
      back = 1;
    }
  } else {
    if (NULL != r) {
      back = -1;
    }
  } 

#line 940 "dk-sort.ctr"
  return back;
}



static
int
dk_sort_line_handler(
  void		*obj,
  dkChar	*line,
  dk4_um_t	 lineno,
  dk4_er_t	*erp
)
{
  dk_sort_line_t	*nptr;
  int		 	 back	=	DK4_TSP_RES_OK;
  

#line 957 "dk-sort.ctr"
  nptr = dk_sort_new_node(line);
  if (NULL != nptr) {
    if (0 == dk4sto_add(lsto, nptr, NULL)) {
      dk_sort_delete_node(nptr);
      dk4app_log_base1(app, DK4_LL_ERROR, 90);
      back = DK4_TSP_RES_FATAL;
      exval = EXIT_FAILURE;
    }
  } 

#line 966 "dk-sort.ctr"
  return back;
}



/**	Report an error with position.
	@param	i1	Index of first message part in array.
	@param	i2	Index of alternative first message part.
	@param	bno	Current byte number.
	@param	lno	Current line number.
	@param	cno	Current character number.
	@param	cil	Current character number within line.
	@param	fn	File name processed.
*/
static
void
dk_sort_report_with_position(
  size_t		 i1,
  size_t		 i2,
  dk4_um_t		 bno,
  dk4_um_t		 lno,
  dk4_um_t		 cno,
  dk4_um_t		 cil,
  const dkChar		*fn
)
{
  dkChar         b1[8*(1+sizeof(dk4_um_t))+16];
  dkChar         b2[8*(1+sizeof(dk4_um_t))+16];
  dkChar         b3[8*(1+sizeof(dk4_um_t))+16];
  const dkChar	*oldlogname	=	NULL;
  dk4_um_t	 oldlogline	=	(dk4_um_t)0UL;
  int		 allbuffersok	=	0;

  oldlogname =  dk4app_get_log_source_file(app);
  oldlogline =  dk4app_get_log_source_line(app);
  dk4app_set_log_source_file(app, fn);
  dk4app_set_log_source_line(app, lno);
  if (0 != dk4ma_write_decimal_unsigned(b3,DK4_SIZEOF(b3,dkChar),cil,0,NULL)) {
  if (0 != dk4ma_write_decimal_unsigned(b2,DK4_SIZEOF(b2,dkChar),cno,0,NULL)) {
  if (0 != dk4ma_write_decimal_unsigned(b1,DK4_SIZEOF(b1,dkChar),bno,0,NULL)) {
    allbuffersok = 1;
  }
  }
  }
  if (0 != allbuffersok) {
    dk4app_log_7(
      app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, i1, 8, 9, 10, b1, b2, b3
    );
  } else {
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, i2);
  }
  dk4app_set_log_source_line(app, oldlogline);
  dk4app_set_log_source_file(app, oldlogname);
}



/**	Report errors from line processing.
	@param	er_en	Error report for encoding/decoding errors.
	@param	en_pr	Error report for processing errors.
	@param	fn	File name for error message.
*/
static
void
dk_sort_report_errors(
  dk4_er_t	*er_en,
  dk4_er_t	*er_pr,
  const dkChar	*fn
)
{
  

#line 1037 "dk-sort.ctr"
  if (NULL != er_en) {
    switch (er_en->ec) {
      case DK4_E_DECODING_FAILED : {
        switch (dk_sort_had_decoding_errors) {
	  case 0: case 1: case 2: {
	    dk_sort_report_with_position(
	      6, 3,
	      er_en->dt.fpos.byteno, er_en->dt.fpos.lineno,
	      er_en->dt.fpos.charno, er_en->dt.fpos.charinline,
	      fn
	    );
	  } break;
	}
	if (3 > dk_sort_had_decoding_errors) { dk_sort_had_decoding_errors++; }
      } break;
      case DK4_E_ENCODING_FAILED : {
        switch (dk_sort_had_encoding_errors) {
	  case 0: case 1: case 2: {
	    dk_sort_report_with_position(
	      5, 2,
	      er_en->dt.fpos.byteno, er_en->dt.fpos.lineno,
	      er_en->dt.fpos.charno, er_en->dt.fpos.charinline,
	      fn
	    );
	  } break;
	}
	if (3 > dk_sort_had_encoding_errors) { dk_sort_had_encoding_errors++; }
      } break;
    }
  }
  if (NULL != er_pr) {
    if (DK4_E_NONE != er_pr->ec) {
      switch (dk_sort_had_proc_errors) {
        case 0: case 1: case 2: {
	    dk_sort_report_with_position(
	      7, 4,
	      er_pr->dt.fpos.byteno, er_pr->dt.fpos.lineno,
	      er_pr->dt.fpos.charno, er_pr->dt.fpos.charinline,
	      fn
	    );
	} break;
      }
      if (3 > dk_sort_had_proc_errors) { dk_sort_had_proc_errors++; }
    }
  }
  

#line 1083 "dk-sort.ctr"
}



/**	Process one input file opened in binary mode.
	@param	fipo		File to process.
	@param	filename	File name.
*/
static
void
dk_sort_process_file(FILE *fipo, const dkChar *filename)
{
  dk4_tspdk_t		tsp;
  dk4_er_t		er_en;
  dk4_er_t		er_pr;
  dk4_er_t		er;
  int			res;
  int			cc;
  int			c;
  unsigned char		ub;
  

#line 1104 "dk-sort.ctr"
  dk4error_init(&er_en);
  dk4error_init(&er_pr);
  dk4error_init(&er);
  res = dk4tspdk_setup_line(
    &tsp, NULL,
    dk_sort_line_handler,
    ibptr, ibsz,
    dk4app_get_encoding(app), input_encoding,
    &er
  );
  if (0 != res) {
    cc = 1;
    do {
      if (dk_sort_can_continue()) {
        c = fgetc(fipo);
	if (EOF != c) {
	  ub = (unsigned char)c;
	  switch (dk4tspdk_add_one_byte(&tsp, ub)) {
	    case DK4_TSP_RES_FATAL : {
	      cc = -1;
	      exval = EXIT_FAILURE;
	      dk4tspdk_get_errors(&er_en, &er_pr, &tsp);
	      dk_sort_report_errors(&er_en, &er_pr, filename);
	    } break;
	    case DK4_TSP_RES_ERROR : {
	      exval = EXIT_FAILURE;
	      dk4tspdk_get_errors(&er_en, &er_pr, &tsp);
	      dk_sort_report_errors(&er_en, &er_pr, filename);
	    } break;
	  }
	} else {
	  cc = 0;
	}
      } else {
        cc = -1;
      }
    } while (1 == cc);
    if (0 == cc) {
      switch (dk4tspdk_finish(&tsp)) {
        case DK4_TSP_RES_FATAL : {
	  exval = EXIT_FAILURE;
	  dk4tspdk_get_errors(&er_en, &er_pr, &tsp);
	  dk_sort_report_errors(&er_en, &er_pr, filename);
	} break;
	case DK4_TSP_RES_ERROR : {
	  exval = EXIT_FAILURE;
	  dk4tspdk_get_errors(&er_en, &er_pr, &tsp);
	  dk_sort_report_errors(&er_en, &er_pr, filename);
	} break;
      }
    }
  } else {
    /* ERROR: Failed to initialize text stream processor */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 14);
    exval = EXIT_FAILURE;
  }
  

#line 1161 "dk-sort.ctr"
}



/**	Process standard input.
*/
static
void
dk_sort_process_stdin(void)
{
#if DK4_ON_WINDOWS
  int	oldmode;
#endif
  

#line 1175 "dk-sort.ctr"
#if DK4_ON_WINDOWS
  oldmode = _setmode(_fileno(stdin), _O_BINARY);
#endif
  dk_sort_process_file(stdin, dk_sort_kwnl[3]);
#if DK4_ON_WINDOWS
  _setmode(_fileno(stdin), oldmode);
#endif
  

#line 1183 "dk-sort.ctr"
}



static
void
dk_sort_process_one_file_name(const dkChar *fn)
{
  FILE	*fipo;
  int	 tests	=	DK4_FOPEN_SC_IS_REGULAR;
  

#line 1194 "dk-sort.ctr"
  fipo = dk4fopen_app(fn, dk_sort_kwnl[4], tests, app);
  if (NULL != fipo) {
    dk_sort_process_file(fipo, fn);
    fclose(fipo);
  } else {
    /* ERROR: Failed to open file, already reported */
    exval = EXIT_FAILURE;
  }
  

#line 1203 "dk-sort.ctr"
}



#if DK4_ON_WINDOWS
static
void
dk_sort_expand_one_file_name(const dkChar *pattern)
{
  dkChar	 buf[DK4_MAX_PATH];
  dk4_dir_t	*fne;
  const dkChar	*shf;			/* Short file name */
  const dkChar	*pth;			/* Path */
  int		 any_file_found	= 0;	/* Flag: Any file found */
  int		 can_continue;
  

#line 1219 "dk-sort.ctr"
  fne = dk4app_fne_open(pattern, app);
  if (NULL != fne) {
    can_continue = 1;
    while ((0 != can_continue) && (NULL != (shf = dk4dir_next_file(fne)))) {
      any_file_found = 1;
      pth = dk4dir_get_path(fne);
      if (NULL != pth) {
        if (0 != dk4str_cpy_s(buf, DK4_SIZEOF(buf,dkChar), pth, NULL)) {
	  if(0 != dk4str_cat_s(buf,DK4_SIZEOF(buf,dkChar),dk_sort_kwnl[5],NULL))
	  {
	    if(0 != dk4str_cat_s(buf, DK4_SIZEOF(buf,dkChar), shf, NULL)) {
	      dk_sort_process_one_file_name(buf);
	    } else {
	      exval = EXIT_FAILURE;
	      /* ERROR: Path too long */
	      dk4app_log_base3(app, DK4_LL_ERROR, 100, 105, pattern);
	    }
	  }
	  else
	  {
	    exval = EXIT_FAILURE;
	    /* ERROR: Path too long */
	    dk4app_log_base3(app, DK4_LL_ERROR, 100, 105, pattern);
	  }
	} else {
	  exval = EXIT_FAILURE;
	  /* ERROR: Path too long! */
	  dk4app_log_base3(app, DK4_LL_ERROR, 100, 105, pattern);
	}
      } else {
        dk_sort_process_one_file_name(shf);
      }
      can_continue = dk_sort_can_continue();
      if (EXIT_FAILURE == exval) { can_continue = 0; }
    }
    dk4dir_close(fne);
    if (0 == any_file_found) {
      /* ERROR: No such file */
      dk4app_log_base3(app, DK4_LL_ERROR, 100, 107, pattern);
      exval = EXIT_FAILURE;
    }
  } else {
    /* ERROR: Failed to open file name expander (already reported) */
    exval = EXIT_FAILURE;
  }
  

#line 1265 "dk-sort.ctr"
}
#endif



/**	Process either the files specified on the command line
	or standard input otherwise.
*/
static
void
dk_sort_process_files(void) 
{
  const dkChar	*fn;		/* Current file to process */
  int		 xargc;		/* Number of command line arguments */
  int		 i;		/* Current file index */
  

#line 1281 "dk-sort.ctr"
  xargc = dk4app_get_argc(app);
  if (0 < xargc) {
    for (
      i = 0;
      ((i < xargc) && (0 != dk_sort_can_continue()) && (EXIT_SUCCESS == exval));
      i++
    )
    {
      fn = dk4app_get_argv(app, i);
      if (NULL != fn) {
#if DK4_ON_WINDOWS
        if (0 != dk4path_must_expand(fn)) {
	  dk_sort_expand_one_file_name(fn);
	} else {
#endif
	  dk_sort_process_one_file_name(fn);
#if DK4_ON_WINDOWS
	}
#endif
      }
    }
  } else {
    dk_sort_process_stdin();
  }
  

#line 1306 "dk-sort.ctr"
}



/**	Write stored text lines to standard output.
*/
static
void
dk_sort_write_output(void)
{
  dk_sort_line_t	*nptr;
  const dkChar		*prevtext;
  int			 printthis;
  

#line 1320 "dk-sort.ctr"
  if ((0 != dk_sort_can_continue()) && (EXIT_SUCCESS == exval)) {
    dk4sto_it_reset(lsti);
    prevtext = NULL;
    do {
      if ((0 != dk_sort_can_continue()) && (EXIT_SUCCESS == exval)) {
        nptr = (dk_sort_line_t *)dk4sto_it_next(lsti);
	if (NULL != nptr) {
	  printthis = 1;
	  if (0 != merge) {
	    if (NULL != prevtext) {
	      if (0 == dk4str_cmp(prevtext, nptr->line)) {
	        printthis = 0;
	      }
	    }
	    prevtext = nptr->line;
	  }
	  if (0 != printthis) {
	    if (0 == dk4fputs(nptr->line, stdout, NULL)) {
	      exval = EXIT_FAILURE;
	      nptr = NULL;
	    }
	    if (0 == dk4fputc(dkT('\n'), stdout, NULL)) {
	      exval = EXIT_FAILURE;
	      nptr = NULL;
	    }
	  }
	}
      } else {
        nptr = NULL;
      }
    } while (NULL != nptr);
  }
  

#line 1353 "dk-sort.ctr"
}



/**	Run after setting signal handlers.
*/
static
void
dk_sort_normal_run(void)
{
  dkChar	buf[32];			/* Input encoding name */
  dk4_er_t	er;				/* Error report */
  dk_sort_line_t	*nopt;			/* Current node */
  size_t	myll		=	1024;	/* Line length */
  size_t	nskip		=	0;
  int		options_error	=	0;	/* Flag: Error in options */
  int		res		=	0;	/* Operations result */
  

#line 1371 "dk-sort.ctr"
  /*	Process command line options
  */
  if (0 != dk4app_opt_is_set_short(app, dkT('c'), NULL)) {
    case_insensitive = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('b'), NULL)) {
    handle_blanks = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('w'), NULL)) {
    handle_blanks = 2;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('t'), NULL)) {
    handle_file_type = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('s'), NULL)) {
    if (0 != dk4app_opt_get_size_short(&nskip, app, dkT('s'), NULL)) {
      skip_words = nskip;
    }
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('n'), NULL)) {
    handle_values = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('u'), NULL)) {
    handle_values = 2;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('x'), NULL)) {
    handle_values = 3;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('f'), NULL)) {
    if ((2 != handle_values) && (3 != handle_values)) {
      handle_values = 4;
    } else {
      dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 11);
      options_error = 1;
    }
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('v'), NULL)) {
    value_first = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('m'), NULL)) {
    merge = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('r'), NULL)) {
    reversed = 1;
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('e'), NULL)) {
    suppress_empty = 1;
  }
  if (0 < dk4app_get_argc(app)) {
    input_encoding = dk4app_get_file_in_encoding(app);
  } else {
    input_encoding = dk4app_get_stdin_encoding(app);
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('i'), NULL)) {
    res = dk4app_opt_get_string_short(
      buf, DK4_SIZEOF(buf,dkChar), app, dkT('i'), NULL
    );
    if (0 != res) {
      res = dk4enc_find(&input_encoding, NULL, buf, NULL);
      if (0 == res) {
        dk4app_log_3(app,dk_sort_msg,dk_sort_sz_msg,DK4_LL_ERROR,12,13,buf);
	options_error = 1;
      }
    }
  }
  res = 0;
  if (0 != dk4app_opt_is_set_short(app, dkT('l'), NULL)) {
    res = dk4app_opt_get_size_short(&myll, app, dkT('l'), NULL);
  }
  if (0 == res) {
    if (0 == dk4app_opt_is_set_short(app, dkT('R'), NULL)) {
      res = dk4app_pref_get_size(&myll, app, dk_sort_kwnl[6], 0);
    }
  }
  if ((0 != res) && (DK4_SIZEOF(input_line_buffer,dkChar) < myll)) {
    allocated_buffer = dk4mem_new_app(dkChar,myll,app);
    if (NULL != allocated_buffer) {
      ibptr = allocated_buffer;
      ibsz = myll;
    } else {
      /* ERROR: Memory allocation failed, already reported */
      options_error = 1;
    }
  }

  /*	Processing part.
  */
  if (0 == options_error) {
    dk4error_init(&er);
    lsto = dk4sto_open(&er);
    if (NULL != lsto) {
      dk4sto_set_comp(lsto, dk_sort_compare_nodes, 0);
      lsti = dk4sto_it_open(lsto, &er);
      if (NULL != lsti) {
        exval = EXIT_SUCCESS;
        dk_sort_process_files();
	dk_sort_write_output();
        dk4sto_it_reset(lsti);
	do {
	  nopt = (dk_sort_line_t *)dk4sto_it_next(lsti);
	  if (NULL != nopt) {
	    dk_sort_delete_node(nopt);
	  }
	} while (NULL != nopt);
        dk4sto_it_close(lsti);
      } else {
        dk4app_log_base1(app, DK4_LL_ERROR, 90);
      }
      dk4sto_close(lsto);
    } else {
      dk4app_log_base1(app, DK4_LL_ERROR, 90);
    }
  }

  /*	Cleanup: release dynamically allocated memory for input line buffer.
  */
  if (NULL != allocated_buffer) {
    dk4mem_free(allocated_buffer); allocated_buffer = NULL; ibsz = 1024;
  }
  

#line 1491 "dk-sort.ctr"
}



#if	DK4_HAVE_SIGACTION
/**	Set signal handlers and run.
*/
static
void
dk_sort_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  struct sigaction opipe;
#endif
  struct sigaction oint;
#ifdef SIGPIPE
  struct sigaction npipe;
#endif
  struct sigaction nint;
  struct sigaction oterm;
  struct sigaction nterm;
  int	 success = 0;
  

#line 1514 "dk-sort.ctr"
#ifdef SIGPIPE
  /*	Set up signal handling for SIGPIPE.
  */
  DK4_MEMRES(&npipe, sizeof(npipe));
  npipe.sa_handler = sig_handler_pipe;
  npipe.sa_flags = 0;
  if (0 != sigemptyset(&npipe.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaddset(&npipe.sa_mask, SIGPIPE)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaction(SIGPIPE, &npipe, &opipe)) {
    /* ERROR: Failed to set up signal handler for SIGPIPE */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
#endif

  /*	Set up signal handling for SIGINT.
  */
  DK4_MEMRES(&nint, sizeof(nint));
  nint.sa_handler = sig_handler_int;
  nint.sa_flags = 0;
  if (0 != sigemptyset(&nint.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaddset(&nint.sa_mask, SIGINT)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaction(SIGINT, &nint, &oint)) {
    /* ERROR: Failed to set up signal handler for SIGINT */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }

  /*	Set up signal handling for SIGTERM
  */
  DK4_MEMRES(&nterm, sizeof(nterm));
  nterm.sa_handler = sig_handler_term;
  nterm.sa_flags = 0;
  if (0 != sigemptyset(&nterm.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaddset(&nterm.sa_mask, SIGTERM)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaction(SIGTERM, &nterm, &oterm)) {
    /* ERROR: Failed to set up signal handler for SIGTERM */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }

  success = 1;
  dk_sort_normal_run();

  /*	Restore signal handling for SIGTERM.
  */
  if (0 != sigaction(SIGTERM, &oterm, NULL)) {
    /* ERROR: Failed to restore old SIGTERM settings */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }

  /*	Restore signal handling for SIGINT.
  */
  restore_old_int:
  if (0 != sigaction(SIGINT, &oint, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }

#ifdef SIGPIPE
  /*	Restore signal handling for SIGPIPE.
  */
  restore_old_pipe:
  if (0 != sigaction(SIGPIPE, &opipe, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, dk_sort_msg, dk_sort_sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }
#endif

  /*	Set exit status code if error occured.
  */
  finished:
  if (0 == success) { exval = EXIT_FAILURE; }
  

#line 1615 "dk-sort.ctr"
}
#else
#if	DK4_HAVE_SIGSET
/**	Set signal handlers and run.
*/
static
void
dk_sort_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;
  

#line 1630 "dk-sort.ctr"
#ifdef SIGPIPE
  oldpipe = sigset(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = sigset(SIGINT,  sig_handler_int);
  oldterm = sigset(SIGTERM, sig_handler_term);
  dk_sort_normal_run();
  sigset(SIGTERM, oldterm);
  sigset(SIGINT,  oldint);
#ifdef SIGPIPE
  sigset(SIGPIPE, oldpipe);
#endif
  

#line 1642 "dk-sort.ctr"
}
#else
#if	DK4_HAVE_SIGNAL
/**	Set signal handlers and run.
*/
static
void
dk_sort_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;
  

#line 1657 "dk-sort.ctr"
#ifdef SIGPIPE
  oldpipe = signal(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = signal(SIGINT,  sig_handler_int);
  oldterm = signal(SIGTERM, sig_handler_term);
  dk_sort_normal_run();
  signal(SIGTERM, oldterm);
  signal(SIGINT,  oldint);
#ifdef SIGPIPE
  signal(SIGPIPE, oldpipe);
#endif
  

#line 1669 "dk-sort.ctr"
}
#else
/**	Set signal handlers and run.
*/
static
void
dk_sort_run_with_signal_handlers(void)
{
  dk_sort_normal_run();
}
#endif
#endif
#endif



/**	Main function.
	@param	argc	Number of command line arguments.
	@param	argv	Command line arguments array.
	@return	0 on success, all other values indicate errors.
*/
#if DK4_CHAR_SIZE > 1
int wmain(int argc, wchar_t *argv[])
#else
int main(int argc, char *argv[])
#endif
{
  

#line 1697 "dk-sort.ctr"
  

#line 1698 "dk-sort.ctr"
  dk4fput_initialize_stdout();
  dk4fput_initialize_stderr();
  app = dk4app_open_cmd(
    argc, argv, dk_sort_options, dk_sort_sz_options,
    dk_sort_kwnl[0], DKT_VERSION_DK,
    dk_sort_kwnl[1], dk_sort_help_text, dk_sort_license_text
  );
  if (NULL != app) {
    dk_sort_sz_msg = dk4app_string_table_size(dk_sort_kw_def);
    dk_sort_msg    = dk4app_string_table(app, dk_sort_kwnl[2], dk_sort_kw_def);
    if (0 != dk4app_can_run_normally(app)) {
      

#line 1710 "dk-sort.ctr"
      dk_sort_run_with_signal_handlers();
    } else {
      

#line 1713 "dk-sort.ctr"
      if (0 != dk4app_help_version_license(app)) {
        exval = EXIT_SUCCESS;
      }
    }
    dk4app_close(app);
  } else {
  }
  fflush(stdout);
  fflush(stderr);
  dk4fput_cleanup_stderr();
  dk4fput_cleanup_stdout();
  

#line 1725 "dk-sort.ctr"
  

#line 1726 "dk-sort.ctr"
  return exval;
}