2 * String utility routines
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 /* Convert all ASCII letters to lower case, in place. */
36 ascii_strdown_inplace(gchar *str)
40 for (s = str; *s; s++)
41 *s = g_ascii_tolower (*s);
46 /* Convert all ASCII letters to upper case, in place. */
48 ascii_strup_inplace(gchar *str)
52 for (s = str; *s; s++)
53 *s = g_ascii_toupper (*s);
58 /* Check if an entire string is printable. */
60 isprint_string(guchar *str)
64 /* Loop until we reach the end of the string (a null) */
65 for(pos = 0; str[pos] != '\0'; pos++){
66 if(!isprint(str[pos])){
67 /* The string contains a non-printable character */
72 /* The string contains only printable characters */
76 /* Check if an entire string is digits. */
78 isdigit_string(guchar *str)
82 /* Loop until we reach the end of the string (a null) */
83 for(pos = 0; str[pos] != '\0'; pos++){
84 if(!isdigit(str[pos])){
85 /* The string contains a non-digit character */
90 /* The string contains only digits */