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'use strict'
let pico = require('picocolors')
let tokenizer = require('./tokenize')
let Input
function registerInput(dependant) {
Input = dependant
}
const HIGHLIGHT_THEME = {
';': pico.yellow,
':': pico.yellow,
'(': pico.cyan,
')': pico.cyan,
'[': pico.yellow,
']': pico.yellow,
'{': pico.yellow,
'}': pico.yellow,
'at-word': pico.cyan,
'brackets': pico.cyan,
'call': pico.cyan,
'class': pico.yellow,
'comment': pico.gray,
'hash': pico.magenta,
'string': pico.green
}
function getTokenType([type, value], processor) {
if (type === 'word') {
if (value[0] === '.') {
return 'class'
}
if (value[0] === '#') {
return 'hash'
}
}
if (!processor.endOfFile()) {
let next = processor.nextToken()
processor.back(next)
if (next[0] === 'brackets' || next[0] === '(') return 'call'
}
return type
}
function terminalHighlight(css) {
let processor = tokenizer(new Input(css), { ignoreErrors: true })
let result = ''
while (!processor.endOfFile()) {
let token = processor.nextToken()
let color = HIGHLIGHT_THEME[getTokenType(token, processor)]
if (color) {
result += token[1]
.split(/\r?\n/)
.map(i => color(i))
.join('\n')
} else {
result += token[1]
}
}
return result
}
terminalHighlight.registerInput = registerInput
module.exports = terminalHighlight
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