or a positive value if s1 > s2
strncasecmp
fn
int strncasecmp(string s1, string s2, uint n)A case-insensitive string comparison, corresponding to the standard strncasecmp() function on platforms which support it. It is similar to funcGLib.strcasecmp except it only compares the first n characters of the strings.
Parameters
s1 | string to compare with s2 |
s2 | string to compare with s1 |
n | the maximum number of characters to compare |
Returns
0 if the strings match, a negative value if s1 < s2,
Deprecated
The problem with
[glib.global.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 [glib.global.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: funcGLib.ascii_strncasecmp, which only works on ASCII and is not locale-sensitive, and funcGLib.utf8_casefold followed by strcmp() on the resulting strings, which is good for case-insensitive sorting of UTF-8.