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vecfile.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Research
 *
 * string vector load support
 */

#include <ast.h>
#include <ls.h>
#include <vecargs.h>

/*
 * load a string vector from lines in file
 */

char**
vecfile(const char* file)
{
      register int      n;
      register char*    buf;
      register char**   vec;
      int         fd;
      struct stat st;

      vec = 0;
      if ((fd = open(file, O_RDONLY)) >= 0)
      {
            if (!fstat(fd, &st) && S_ISREG(st.st_mode) && (n = st.st_size) > 0 && (buf = newof(0, char, n + 1, 0)))
            {
                  if (read(fd, buf, n) == n)
                  {
                        buf[n] = 0;
                        vec = vecload(buf);
                  }
                  if (!vec) free(buf);
            }
            close(fd);
      }
      return(vec);
}

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