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Get rid of CJS, introduce new spaces #8

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merged 5 commits into from
Sep 15, 2023
Merged

Get rid of CJS, introduce new spaces #8

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856d8bb
Get rid of CJS, introduce oklch
dy Aug 22, 2023
c52fbaa
Fix tests
dy Sep 15, 2023
0fce97c
More parsing spaces
dy Sep 15, 2023
5679e0f
Merge branch 'master' into v2
dy Sep 15, 2023
b4b3cd0
Update readme.md
dy Sep 15, 2023
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214 changes: 91 additions & 123 deletions index.js
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Original file line number Diff line number Diff line change
@@ -1,12 +1,9 @@
/**
* @module color-parse
*/
import names from 'color-name'

'use strict'

var names = require('color-name')

module.exports = parse
export default parse

/**
* Base hues
Expand All @@ -30,144 +27,115 @@ var baseHues = {
function parse(cstr) {
var m, parts = [], alpha = 1, space

if (typeof cstr === 'string') {
cstr = cstr.toLowerCase();

//keyword
if (names[cstr]) {
parts = names[cstr].slice()
space = 'rgb'
}

//reserved words
else if (cstr === 'transparent') {
alpha = 0
space = 'rgb'
parts = [0, 0, 0]
}

//hex
else if (/^#[A-Fa-f0-9]+$/.test(cstr)) {
var base = cstr.slice(1)
var size = base.length
var isShort = size <= 4
alpha = 1

if (isShort) {
parts = [
parseInt(base[0] + base[0], 16),
parseInt(base[1] + base[1], 16),
parseInt(base[2] + base[2], 16)
]
if (size === 4) {
alpha = parseInt(base[3] + base[3], 16) / 255
}
}
else {
parts = [
parseInt(base[0] + base[1], 16),
parseInt(base[2] + base[3], 16),
parseInt(base[4] + base[5], 16)
]
if (size === 8) {
alpha = parseInt(base[6] + base[7], 16) / 255
}
}

if (!parts[0]) parts[0] = 0
if (!parts[1]) parts[1] = 0
if (!parts[2]) parts[2] = 0

space = 'rgb'
}

//color space
else if (m = /^((?:rgb|hs[lvb]|hwb|cmyk?|xy[zy]|gray|lab|lchu?v?|[ly]uv|lms)a?)\s*\(([^\)]*)\)/.exec(cstr)) {
var name = m[1]
var isRGB = name === 'rgb'
var base = name.replace(/a$/, '')
space = base
var size = base === 'cmyk' ? 4 : base === 'gray' ? 1 : 3
parts = m[2].trim()
.split(/\s*[,\/]\s*|\s+/)
.map(function (x, i) {
//<percentage>
if (/%$/.test(x)) {
//alpha
if (i === size) return parseFloat(x) / 100
//rgb
if (base === 'rgb') return parseFloat(x) * 255 / 100
return parseFloat(x)
}
//hue
else if (base[i] === 'h') {
//<deg>
if (/deg$/.test(x)) {
return parseFloat(x)
}
//<base-hue>
else if (baseHues[x] !== undefined) {
return baseHues[x]
}
}
return parseFloat(x)
})

if (name === base) parts.push(1)
alpha = (isRGB) ? 1 : (parts[size] === undefined) ? 1 : parts[size]
parts = parts.slice(0, size)
}

//named channels case
else if (cstr.length > 10 && /[0-9](?:\s|\/)/.test(cstr)) {
parts = cstr.match(/([0-9]+)/g).map(function (value) {
return parseFloat(value)
})

space = cstr.match(/([a-z])/ig).join('').toLowerCase()
}
//numeric case
if (typeof cstr === 'number') {
return { space: 'rgb', values: [cstr >>> 16, (cstr & 0x00ff00) >>> 8, cstr & 0x0000ff], alpha: 1 }
}
if (typeof cstr === 'number') return { space: 'rgb', values: [cstr >>> 16, (cstr & 0x00ff00) >>> 8, cstr & 0x0000ff], alpha: 1 }

//numeric case
else if (!isNaN(cstr)) {
cstr = String(cstr).toLowerCase();

//keyword
if (names[cstr]) {
parts = names[cstr].slice()
space = 'rgb'
parts = [cstr >>> 16, (cstr & 0x00ff00) >>> 8, cstr & 0x0000ff]
}

//array-like
else if (Array.isArray(cstr) || cstr.length) {
parts = [cstr[0], cstr[1], cstr[2]]
//reserved words
else if (cstr === 'transparent') {
alpha = 0
space = 'rgb'
alpha = cstr.length === 4 ? cstr[3] : 1
parts = [0, 0, 0]
}

//object case - detects css cases of rgb and hsl
else if (cstr instanceof Object) {
if (cstr.r != null || cstr.red != null || cstr.R != null) {
space = 'rgb'
//hex
else if (/^#[A-Fa-f0-9]+$/.test(cstr)) {
var base = cstr.slice(1)
var size = base.length
var isShort = size <= 4
alpha = 1

if (isShort) {
parts = [
cstr.r || cstr.red || cstr.R || 0,
cstr.g || cstr.green || cstr.G || 0,
cstr.b || cstr.blue || cstr.B || 0
parseInt(base[0] + base[0], 16),
parseInt(base[1] + base[1], 16),
parseInt(base[2] + base[2], 16)
]
if (size === 4) {
alpha = parseInt(base[3] + base[3], 16) / 255
}
}
else {
space = 'hsl'
parts = [
cstr.h || cstr.hue || cstr.H || 0,
cstr.s || cstr.saturation || cstr.S || 0,
cstr.l || cstr.lightness || cstr.L || cstr.b || cstr.brightness
parseInt(base[0] + base[1], 16),
parseInt(base[2] + base[3], 16),
parseInt(base[4] + base[5], 16)
]
if (size === 8) {
alpha = parseInt(base[6] + base[7], 16) / 255
}
}

alpha = cstr.a || cstr.alpha || cstr.opacity || 1
if (!parts[0]) parts[0] = 0
if (!parts[1]) parts[1] = 0
if (!parts[2]) parts[2] = 0

space = 'rgb'
}

//color space
else if (m = /^((?:rgba?|hs[lvb]a?|hwba?|cmyk?|xy[zy]|gray|lab|lchu?v?|[ly]uv|lms|oklch|oklab))\s*\(([^\)]*)\)/.exec(cstr)) {
var name = m[1]
var isRGB = name === 'rgb'
var base = name.replace(/a$/, '')
space = base
var size = base === 'cmyk' ? 4 : base === 'gray' ? 1 : 3
parts = m[2].trim()
.split(/\s*[,\/]\s*|\s+/)
.map(function (x, i) {
//<percentage>
if (x[x.length - 1] === '%') {
//alpha
if (i === 3) return parseFloat(x) / 100
//rgb
if (base === 'rgb') return parseFloat(x) * 255 / 100
// lch/oklch
if (/^(ok)?l/.test(base)) {
if (!i) return parseFloat(x) / 100
return parseFloat(x) * 0.4 / 100
}
return parseFloat(x)
}
//hue
if (base[i] === 'h') {
//<base-hue>
if (baseHues[x] !== undefined) return baseHues[x]
//<deg>
if (/deg$/.test(x)) return parseFloat(x)
//<turn>
if (/turn$/.test(x)) return parseFloat(x) * 360
}
if (x === 'none') return 0
return parseFloat(x)
})

if (name === base) parts.push(1)
alpha = (isRGB) ? 1 : (parts[size] === undefined) ? 1 : parts[size]
parts = parts.slice(0, size)
}

//named channels case
else if (/[0-9](?:\s|\/|,)/.test(cstr)) {
parts = cstr.match(/([0-9]+)/g).map(function (value) {
return parseFloat(value)
})

if (cstr.opacity != null) alpha /= 100
space = cstr.match(/([a-z])/ig)?.join('')?.toLowerCase() || 'rgb'
}

return {
space: space,
space,
values: parts,
alpha: alpha
alpha
}
}
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