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Add shorthand hex recognition #21

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Feb 28, 2023
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Add shorthand hex recognition #21

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9 changes: 8 additions & 1 deletion lua/color-picker/utils/window.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -567,7 +567,7 @@ end --}}}
-------------------------------------

local function detect_colors(str) --{{{
local hex_pattern = "#%x%x%x%x%x%x%x?%x?"
local hex_pattern = "#%x%x%x%x?%x?%x?%x?%x?"
local rgb_pattern = "rgba?%(%s*%d+%s*,%s*%d+%s*,%s*%d+%s*.*%)"
local hsl_pattern = "hsla?%(%s*%d+%s*,%s*%d+%s*%%*,%s*%d+%s*%%*.*%)"

Expand Down Expand Up @@ -633,13 +633,15 @@ end --}}}
local function sandwich_processor(str) --{{{
local hex_capture_pattern = "#(%x%x%x%x%x%x)"
local hexa_capture_pattern = "#(%x%x%x%x%x%x)(%x%x)"
local short_hex_capture_pattern = "#(%x%x%x)"
local rgba_capture_pattern = "rgba%(%s*(%d+)%s*,%s*(%d+)%s*,%s*(%d+)%s*,?%s*(%d+%.?%d*)%s*%)"
local hsla_capture_pattern = "hsla%(%s*(%d+)%s*,%s*(%d+)%s*%%*,%s*(%d+)%s*%%,?%s*(%d+%.?%d*)%s*%)"
local rgb_capture_pattern = "rgb%(%s*(%d+)%s*,%s*(%d+)%s*,%s*(%d+)%s*,?%s*%)"
local hsl_capture_pattern = "hsl%(%s*(%d+)%s*,%s*(%d+)%s*%%*,%s*(%d+)%s*%%,?%s*%)"

local _, _, hex_val, hex_trans = string.find(str, hexa_capture_pattern)
local _, _, hex = string.find(str, hex_capture_pattern)
local _, _, short_hex = string.find(str, short_hex_capture_pattern)
local _, _, ra, ga, ba, rgba = string.find(str, rgba_capture_pattern)
local _, _, ha, sa, la, hsla = string.find(str, hsla_capture_pattern)
local _, _, r, g, b = string.find(str, rgb_capture_pattern)
Expand All @@ -648,6 +650,11 @@ local function sandwich_processor(str) --{{{
return { "hex", hex_val, hex_trans }
elseif hex then
return { "hex", hex }
elseif short_hex then
local red = short_hex:sub(1, 1)
local green = short_hex:sub(2, 2)
local blue = short_hex:sub(3, 3)
return { "hex", red .. red .. green .. green .. blue .. blue }
elseif ra then
return { "rgb", tonumber(ra), tonumber(ga), tonumber(ba), tonumber(rgba) }
elseif ha then
Expand Down