usr/src/lib/libast/common/vec/vecfile.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * Glenn Fowler
  25  * AT&T Research
  26  *
  27  * string vector load support
  28  */
  29
  30 #include <ast.h>
  31 #include <ls.h>
  32 #include <vecargs.h>
  33
  34 /*
  35  * load a string vector from lines in file
  36  */
  37
  38 char**
  39 vecfile(const char* file)
  40 {
  41         register int    n;
  42         register char*  buf;
  43         register char** vec;
  44         int             fd;
  45         struct stat     st;
  46
  47         vec = 0;
  48         if ((fd = open(file, O_RDONLY)) >= 0)
  49         {
  50                 if (!fstat(fd, &st) && S_ISREG(st.st_mode) && (n = st.st_size) > 0 && (buf = newof(0, char, n + 1, 0)))
  51                 {
  52                         if (read(fd, buf, n) == n)
  53                         {
  54                                 buf[n] = 0;
  55                                 vec = vecload(buf);
  56                         }
  57                         if (!vec) free(buf);
  58                 }
  59                 close(fd);
  60         }
  61         return(vec);
  62 }