diff options
Diffstat (limited to 'lualibs-unicode.lua')
| -rw-r--r-- | lualibs-unicode.lua | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lualibs-unicode.lua b/lualibs-unicode.lua index 902f6a0..6601a4c 100644 --- a/lualibs-unicode.lua +++ b/lualibs-unicode.lua @@ -9,7 +9,6 @@ if not modules then modules = { } end modules ['l-unicode'] = { -- this module will be reorganized -- todo: utf.sub replacement (used in syst-aux) - -- we put these in the utf namespace: utf = utf or (unicode and unicode.utf8) or { } @@ -1130,3 +1129,13 @@ if not utf.values then string.utfvalues = utf.values end + +function utf.chrlen(u) -- u is number + return + (u < 0x80 and 1) or + (u < 0xE0 and 2) or + (u < 0xF0 and 3) or + (u < 0xF8 and 4) or + (u < 0xFC and 5) or + (u < 0xFE and 6) or 0 +end |