all files / liquidjs/src/ whitespace-ctrl.js

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const _ = require('./util/underscore.js')
 
function whiteSpaceCtrl (tokens, options) {
  options = _.assign({ greedy: true }, options)
  var inRaw = false
 
  tokens.forEach((token, i) => {
    if (shouldTrimLeft(token, inRaw, options)) {
      trimLeft(tokens[i - 1], options.greedy)
    }
 
    if (token.type === 'tag' && token.name === 'raw') inRaw = true
    if (token.type === 'tag' && token.name === 'endraw') inRaw = false
 
    if (shouldTrimRight(token, inRaw, options)) {
      trimRight(tokens[i + 1], options.greedy)
    }
  })
}
 
function shouldTrimLeft (token, inRaw, options) {
  if (inRaw) return false
  if (token.type === 'tag') return token.trim_left || options.trim_tag_left
  if (token.type === 'value') return token.trim_left || options.trim_value_left
}
 
function shouldTrimRight (token, inRaw, options) {
  if (inRaw) return false
  if (token.type === 'tag') return token.trim_right || options.trim_tag_right
  if (token.type === 'value') return token.trim_right || options.trim_value_right
}
 
function trimLeft (token, greedy) {
  if (!token || token.type !== 'html') return
 
  var rLeft = greedy ? /\s+$/g : /[\t\r ]*$/g
  token.value = token.value.replace(rLeft, '')
}
 
function trimRight (token, greedy) {
  if (!token || token.type !== 'html') return
 
  var rRight = greedy ? /^\s+/g : /^[\t\r ]*\n?/g
  token.value = token.value.replace(rRight, '')
}
 
module.exports = whiteSpaceCtrl