kc3-lang/gnulib/tests/dfa-match-aux.c

• Show log

  Commit

• Hash : 28672037
  Author :
  Date : 2016-08-16T15:00:43
  

  dfa: new module, importing grep's DFA matcher
  
  Since grep's DFA matcher is now being used by two gnulib-enabled
  projects, grep and sed, it makes sense to version-control its
  sources and unit tests in one place: here.
  * modules/dfa: New module.
  * modules/dfa-tests: New file.
  * lib/dfa.c: New file, from grep.
  * lib/dfa.h: Likewise.
  * lib/localeinfo.c: Likewise.
  * lib/localeinfo.h: Likewise.
  * tests/dfa-match-aux.c: Likewise.
  * tests/dfa-invalid-char-class.sh: Likewise.
  * tests/dfa-match.sh: Likewise, with minor changes.
  * MODULES.html.sh (Misc): Add "dfa" to this list.
  

Download

• tests/dfa-match-aux.c

• /* Auxiliary program to test a DFA code path that cannot be triggered
     by grep or gawk.
     Copyright 2014-2016 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 3, 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., 51 Franklin Street - Fifth Floor, Boston, MA
     02110-1301, USA.  */
  
  #include <config.h>
  #include <locale.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <regex.h>
  #include <dfa.h>
  #include <localeinfo.h>
  
  #include "getprogname.h"
  
  _Noreturn void
  dfaerror (char const *mesg)
  {
    printf ("dfaerror: %s\n", mesg);
    exit (EXIT_FAILURE);
  }
  
  _Noreturn void
  dfawarn (char const *mesg)
  {
    printf ("dfawarn: %s\n", mesg);
    exit (EXIT_FAILURE);
  }
  
  int
  main (int argc, char **argv)
  {
    struct dfa *dfa;
    char *beg, *end, *p;
    int allow_nl;
    struct localeinfo localeinfo;
  
    if (argc < 3)
      exit (EXIT_FAILURE);
  
    setlocale (LC_ALL, "");
    init_localeinfo (&localeinfo);
  
    dfa = dfaalloc ();
    dfasyntax (dfa, &localeinfo, RE_SYNTAX_GREP | RE_NO_EMPTY_RANGES, 0);
    dfacomp (argv[1], strlen (argv[1]), dfa, 0);
  
    beg = argv[2];
    end = argv[2] + strlen (argv[2]);
    allow_nl = argc > 3 && atoi (argv[3]);
  
    p = dfaexec (dfa, beg, end, allow_nl, NULL, NULL);
  
    if (p != NULL)
      printf ("%zd\n", p - beg);
  
    exit (EXIT_SUCCESS);
  }
  

Download