diff options
Diffstat (limited to 'lua/colorizer/utils.lua')
| -rw-r--r-- | lua/colorizer/utils.lua | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/lua/colorizer/utils.lua b/lua/colorizer/utils.lua index 0cb09ee..3b501ac 100644 --- a/lua/colorizer/utils.lua +++ b/lua/colorizer/utils.lua @@ -22,22 +22,26 @@ local CATEGORY_ALPHANUM = bor(CATEGORY_ALPHA, CATEGORY_DIGIT) -- do not run the loop multiple times local b = string.byte +local byte_values = { ["0"] = b "0", ["9"] = b "9", ["a"] = b "a", ["f"] = b "f", ["z"] = b "z" } +local extra_char = { [b "-"] = true } + for i = 0, 255 do local v = 0 + local lowercase = bor(i, 0x20) -- Digit is bit 1 - if i >= b "0" and i <= b "9" then + if i >= byte_values["0"] and i <= byte_values["9"] then v = bor(v, lshift(1, 0)) v = bor(v, lshift(1, 2)) - v = bor(v, lshift(i - b "0", 4)) - end - local lowercase = bor(i, 0x20) - -- Alpha is bit 2 - if lowercase >= b "a" and lowercase <= b "z" then + v = bor(v, lshift(i - byte_values["0"], 4)) + elseif lowercase >= byte_values["a"] and lowercase <= byte_values["z"] then + -- Alpha is bit 2 v = bor(v, lshift(1, 1)) - if lowercase <= b "f" then + if lowercase <= byte_values["f"] then v = bor(v, lshift(1, 2)) - v = bor(v, lshift(lowercase - b "a" + 10, 4)) + v = bor(v, lshift(lowercase - byte_values["a"] + 10, 4)) end + elseif extra_char[i] then + v = i end BYTE_CATEGORY[i] = v end |