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lib: charset: correct utf8_utf16_strnlen() description 

Correct the description of utf8_utf16_strnlen() and utf8_utf16_strlen() to
reflect that they return u16 count and not byte count.

For these functions and utf16_utf8_strnlen() describe the handling of
invalid code sequences.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-05-08 19:34:48 +02:00
parent 82da478b8f
commit 8a4c443c00
1 changed files with 7 additions and 5 deletions
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12
include/charset.h
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@ -46,9 +46,9 @@ int utf8_put(s32 code, char **dst);
*
* @src: utf-8 string
* @count: maximum number of code points to convert
* Return: length in bytes after conversion to utf-16 without the
* Return: length in u16 after conversion to utf-16 without the
* trailing \0. If an invalid UTF-8 sequence is hit one
* word will be reserved for a replacement character.
* u16 will be reserved for a replacement character.
*/
size_t utf8_utf16_strnlen(const char *src, size_t count);
@ -56,8 +56,9 @@ size_t utf8_utf16_strnlen(const char *src, size_t count);
* utf8_utf16_strlen() - length of a utf-8 string after conversion to utf-16
*
* @src: utf-8 string
* Return: length in bytes after conversion to utf-16 without the
* trailing \0. -1 if the utf-8 string is not valid.
* Return: length in u16 after conversion to utf-16 without the
* trailing \0. If an invalid UTF-8 sequence is hit one
* u16 will be reserved for a replacement character.
*/
#define utf8_utf16_strlen(a) utf8_utf16_strnlen((a), SIZE_MAX)
@ -127,7 +128,8 @@ size_t utf16_utf8_strnlen(const u16 *src, size_t count);
*
* @src: utf-16 string
* Return: length in bytes after conversion to utf-8 without the
* trailing \0. -1 if the utf-16 string is not valid.
* trailing \0. If an invalid UTF-16 sequence is hit one
* byte will be reserved for a replacement character.
*/
#define utf16_utf8_strlen(a) utf16_utf8_strnlen((a), SIZE_MAX)