/* str_util.h
 * String utility definitions
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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 2
 * of the License, 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.
 */

#ifndef __STR_UTIL_H__
#define __STR_UTIL_H__

/** Convert all upper-case ASCII letters to their ASCII lower-case
 *  equivalents, in place, with a simple non-locale-dependent
 *  ASCII mapping (A-Z -> a-z).
 *  All other characters are left unchanged, as the mapping to
 *  lower case may be locale-dependent.
 *
 *  The string is assumed to be in a character encoding, such as
 *  an ISO 8859 or other EUC encoding, or UTF-8, in which all
 *  bytes in the range 0x00 through 0x7F are ASCII characters and
 *  non-ASCII characters are constructed from one or more bytes in
 *  the range 0x80 through 0xFF.
 *  
 * @param str The string to be lower-cased.
 * @return    ptr to the string
 */
gchar *ascii_strdown_inplace(gchar *str);

/** Convert all lower-case ASCII letters to their ASCII upper-case
 *  equivalents, in place, with a simple non-locale-dependent
 *  ASCII mapping (a-z -> A-Z).
 *  All other characters are left unchanged, as the mapping to
 *  lower case may be locale-dependent.
 *
 *  The string is assumed to be in a character encoding, such as
 *  an ISO 8859 or other EUC encoding, or UTF-8, in which all
 *  bytes in the range 0x00 through 0x7F are ASCII characters and
 *  non-ASCII characters are constructed from one or more bytes in
 *  the range 0x80 through 0xFF.
 *  
 * @param str The string to be upper-cased.
 * @return    ptr to the string
 */
gchar *ascii_strup_inplace(gchar *str);

/** Check if an entire string consists of printable characters
 *  
 * @param str The string to be checked
 * @return    TRUE if the entire string is printable, otherwise FALSE
 */
gboolean isprint_string(guchar *string);

/** Check if an entire string consists of digits
 *  
 * @param str The string to be checked
 * @return    TRUE if the entire string is digits, otherwise FALSE
 */
gboolean isdigit_string(guchar *string);

#endif /* __STR_UTIL_H__ */