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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2F'>mariadb-11.7.2</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fsql-common%2F'>sql-common</a>/</p><hr><h3>✏️ Editing: my_user.c</h3>  
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            <textarea name='content' rows='20'>/* Copyright (c) 2006-2008 MySQL AB, 2009 Sun Microsystems, Inc.
   Use is subject to license terms.

 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; version 2 of the License.

 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 St, Fifth Floor, Boston, MA 02110-1335  USA */

#include &lt;my_global.h&gt;
#include &lt;my_user.h&gt;
#include &lt;m_string.h&gt;
#include &lt;mysql_com.h&gt;

/*
  Parse user value to user name and host name parts.

  SYNOPSIS
    user_id_str     [IN]  User value string (the source).
    user_id_len     [IN]  Length of the user value.
    user_name_str   [OUT] Buffer to store user name part.
                          Must be not less than USERNAME_LENGTH + 1.
    user_name_len   [OUT] A place to store length of the user name part.
    host_name_str   [OUT] Buffer to store host name part.
                          Must be not less than HOSTNAME_LENGTH + 1.
    host_name_len   [OUT] A place to store length of the host name part.

 RETURN
   0 - if only a user was set, no &#039;@&#039; was found
   1 - if both user and host were set
*/

int parse_user(const char *user_id_str, size_t user_id_len,
               char *user_name_str, size_t *user_name_len,
               char *host_name_str, size_t *host_name_len)
{
  char *p= strrchr(user_id_str, &#039;@&#039;);

  if (!p)
  {
    *user_name_len= user_id_len;
    *host_name_len= 0;
  }
  else
  {
    *user_name_len= (uint) (p - user_id_str);
    *host_name_len= (uint) (user_id_len - *user_name_len - 1);
  }

  if (*user_name_len &gt; USERNAME_LENGTH)
    *user_name_len= USERNAME_LENGTH;

  if (*host_name_len &gt; HOSTNAME_LENGTH)
    *host_name_len= HOSTNAME_LENGTH;

  memcpy(user_name_str, user_id_str, *user_name_len);
  memcpy(host_name_str, p + 1, *host_name_len);

  user_name_str[*user_name_len]= 0;
  host_name_str[*host_name_len]= 0;

  return p != NULL;
}
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