Function
GLibstrncasecmp
deprecated: 2.2
Description
A case-insensitive string comparison, corresponding to the standard
strncasecmp()
function on platforms which support it. It is similar
to g_strcasecmp()
except it only compares the first n
characters of
the strings.
Deprecated since: 2.2
The problem with g_strncasecmp()
is that it does
the comparison by calling toupper()/tolower(). These functions
are locale-specific and operate on single bytes. However, it is
impossible to handle things correctly from an internationalization
standpoint by operating on bytes, since characters may be multibyte.
Thus g_strncasecmp()
is broken if your string is guaranteed to be
ASCII, since it is locale-sensitive, and it’s broken if your string
is localized, since it doesn’t work on many encodings at all,
including UTF-8, EUC-JP, etc.
There are therefore two replacement techniques: g_ascii_strncasecmp(),
which only works on ASCII and is not locale-sensitive, and
`g_utf8_casefold()` followed by `strcmp()` on the resulting strings,
which is good for case-insensitive sorting of UTF-8.
Parameters
s1
-
Type:
const gchar*
A string.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string. s2
-
Type:
const gchar*
A string to compare with
s1
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string. n
-
Type:
guint
The maximum number of characters to compare.