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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [net/] [ether_aton_r.c] - Blame information for rev 829

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Line No. Rev Author Line
1 207 jeremybenn
/* Copyright (C) 1996,97,98,99,2002 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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#include <ctype.h>
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#include <stdlib.h>
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#include <netinet/ether.h>
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#include <netinet/if_ether.h>
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struct ether_addr *
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ether_aton_r (const char *asc, struct ether_addr *addr)
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{
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  size_t cnt;
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  for (cnt = 0; cnt < 6; ++cnt)
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    {
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      unsigned int number;
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      char ch;
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      ch = _tolower (*asc++);
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      if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
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        return NULL;
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      number = isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);
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      ch = _tolower (*asc);
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      if ((cnt < 5 && ch != ':') || (cnt == 5 && ch != '\0' && !isspace (ch)))
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        {
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          ++asc;
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          if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
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            return NULL;
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          number <<= 4;
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          number += isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);
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          ch = *asc;
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          if (cnt < 5 && ch != ':')
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            return NULL;
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        }
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      /* Store result.  */
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      addr->ether_addr_octet[cnt] = (unsigned char) number;
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      /* Skip ':'.  */
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      ++asc;
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    }
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  return addr;
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}
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libc_hidden_def (ether_aton_r)

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