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/* wordsplit - a word splitter
   Copyright (C) 2009-2011, 2017 Sergey Poznyakoff

   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 3 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, see <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wordsplit.h>

struct flgtab
{
  char *name;
  int flag;
};

struct flgtab flgtab[] = {
#define FLG(n) { #n, n }
  FLG(WRDSF_SHOWERR),
  FLG(WRDSF_ENOMEMABRT),
  FLG(WRDSF_WS),
  FLG(WRDSF_QUOTE),
  FLG(WRDSF_SQUEEZE_DELIMS),
  FLG(WRDSF_RETURN_DELIMS),
  FLG(WRDSF_SED_EXPR),
  FLG(WRDSF_DEFFLAGS),
  { NULL }
#undef FLG
};

int
str2flag (const char *opt)
{
  struct flgtab *f;
  for (f = flgtab; f->name; f++)
    if (strcmp (f->name, opt) == 0)
      return f->flag;
  return 0;
}
  
int
main (int argc, char **argv)
{
  struct wordsplit ws;
  int flags = 0;
  int f;
  size_t i;
  char *text;
  
  char *progname = argv[0];
  
  while (--argc)
    {
      char *opt = *++argv;
      if (strncmp (opt, "delim=", 6) == 0)
	{
	  ws.ws_delim = opt + 6;
	  flags |= WRDSF_DELIM;
	}
      else if (strncmp (opt, "comment=", 8) == 0)
	{
	  ws.ws_comment = opt + 8;
	  flags |= WRDSF_COMMENT;
	}
      else if ((opt[0] == '!' || opt[0] == '~')
	       && strncmp (opt+1, "WRDSF_", 6) == 0)
	{
	  f = str2flag (opt + 1);
	  if (!f)
	    {
	      fprintf (stderr, "%s: unknown flag: %s\n", progname, opt+1);
	      exit (1);
	    }
	  flags &= ~f;
	}
      else if (strncmp (opt, "WRDSF_", 6) == 0)
	{
	  f = str2flag (opt);
	  if (!f)
	    {
	      fprintf (stderr, "%s: unknown flag: %s\n", progname, opt);
	      exit (1);
	    }
	  flags |= f;
	}
      else if (strcmp (opt, "--") == 0)
	break;
      else
	break;
    }

  if (!flags)
    flags = WRDSF_DEFFLAGS;

  if (argc == 0)
    {
      fprintf (stderr, "%s: not enough arguments\n", progname);
      return 1;
    }
  text = *argv++;
  argc--;
  
  if (wordsplit (text, &ws, flags))
    {
      fprintf (stderr, "%s: parse error\n", progname);
      return 1;
    }

  if (ws.ws_wordc != argc)
    {
      fprintf (stderr, "%s: wrong number of fields (%lu/%d)\n",
	       progname, (unsigned long) ws.ws_wordc, argc);
      return 1;
    }

  for (i = 0; i < ws.ws_wordc; i++)
    if (strcmp (ws.ws_wordv[i], argv[i]))
      {
	fprintf (stderr, "%s: word %lu mismatch (got %s)\n",
		 progname, (unsigned long) i, ws.ws_wordv[i]);
	return 1;
      }

  wordsplit_free (&ws);
  return 0;
}

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