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unicode: remove the unused utf8{,n}age{min,max} functions

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No actually used anywhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
This commit is contained in:
Christoph Hellwig 2021-09-15 09:00:01 +02:00 committed by Gabriel Krisman Bertazi
parent 49bd03cc7e
commit 379210db48
2 changed files with 0 additions and 129 deletions
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113
fs/unicode/utf8-norm.c
View File

@ -391,119 +391,6 @@ static utf8leaf_t *utf8lookup(const struct utf8data *data,
return utf8nlookup(data, hangul, s, (size_t)-1);
}
/*
* Maximum age of any character in s.
* Return -1 if s is not valid UTF-8 unicode.
* Return 0 if only non-assigned code points are used.
*/
int utf8agemax(const struct utf8data *data, const char *s)
{
utf8leaf_t *leaf;
int age = 0;
int leaf_age;
unsigned char hangul[UTF8HANGULLEAF];
if (!data)
return -1;
while (*s) {
leaf = utf8lookup(data, hangul, s);
if (!leaf)
return -1;
leaf_age = utf8agetab[LEAF_GEN(leaf)];
if (leaf_age <= data->maxage && leaf_age > age)
age = leaf_age;
s += utf8clen(s);
}
return age;
}
EXPORT_SYMBOL(utf8agemax);
/*
* Minimum age of any character in s.
* Return -1 if s is not valid UTF-8 unicode.
* Return 0 if non-assigned code points are used.
*/
int utf8agemin(const struct utf8data *data, const char *s)
{
utf8leaf_t *leaf;
int age;
int leaf_age;
unsigned char hangul[UTF8HANGULLEAF];
if (!data)
return -1;
age = data->maxage;
while (*s) {
leaf = utf8lookup(data, hangul, s);
if (!leaf)
return -1;
leaf_age = utf8agetab[LEAF_GEN(leaf)];
if (leaf_age <= data->maxage && leaf_age < age)
age = leaf_age;
s += utf8clen(s);
}
return age;
}
EXPORT_SYMBOL(utf8agemin);
/*
* Maximum age of any character in s, touch at most len bytes.
* Return -1 if s is not valid UTF-8 unicode.
*/
int utf8nagemax(const struct utf8data *data, const char *s, size_t len)
{
utf8leaf_t *leaf;
int age = 0;
int leaf_age;
unsigned char hangul[UTF8HANGULLEAF];
if (!data)
return -1;
while (len && *s) {
leaf = utf8nlookup(data, hangul, s, len);
if (!leaf)
return -1;
leaf_age = utf8agetab[LEAF_GEN(leaf)];
if (leaf_age <= data->maxage && leaf_age > age)
age = leaf_age;
len -= utf8clen(s);
s += utf8clen(s);
}
return age;
}
EXPORT_SYMBOL(utf8nagemax);
/*
* Maximum age of any character in s, touch at most len bytes.
* Return -1 if s is not valid UTF-8 unicode.
*/
int utf8nagemin(const struct utf8data *data, const char *s, size_t len)
{
utf8leaf_t *leaf;
int leaf_age;
int age;
unsigned char hangul[UTF8HANGULLEAF];
if (!data)
return -1;
age = data->maxage;
while (len && *s) {
leaf = utf8nlookup(data, hangul, s, len);
if (!leaf)
return -1;
leaf_age = utf8agetab[LEAF_GEN(leaf)];
if (leaf_age <= data->maxage && leaf_age < age)
age = leaf_age;
len -= utf8clen(s);
s += utf8clen(s);
}
return age;
}
EXPORT_SYMBOL(utf8nagemin);
/*
* Length of the normalization of s.
* Return -1 if s is not valid UTF-8 unicode.

16
fs/unicode/utf8n.h
View File

@ -33,22 +33,6 @@ int utf8version_is_supported(unsigned int version);
extern const struct utf8data *utf8nfdi(unsigned int maxage);
extern const struct utf8data *utf8nfdicf(unsigned int maxage);
/*
* Determine the maximum age of any unicode character in the string.
* Returns 0 if only unassigned code points are present.
* Returns -1 if the input is not valid UTF-8.
*/
extern int utf8agemax(const struct utf8data *data, const char *s);
extern int utf8nagemax(const struct utf8data *data, const char *s, size_t len);
/*
* Determine the minimum age of any unicode character in the string.
* Returns 0 if any unassigned code points are present.
* Returns -1 if the input is not valid UTF-8.
*/
extern int utf8agemin(const struct utf8data *data, const char *s);
extern int utf8nagemin(const struct utf8data *data, const char *s, size_t len);
/*
* Determine the length of the normalized from of the string,
* excluding any terminating NULL byte.