svgdom/src/utils/strUtils.js

Straightforward DOM implementation for SVG, HTML and XML

// Ensure to six-based hex
export const fullHex = function (hex) {
  return hex.length === 4
    ? [ '#',
      hex.substring(1, 2), hex.substring(1, 2),
      hex.substring(2, 3), hex.substring(2, 3),
      hex.substring(3, 4), hex.substring(3, 4)
    ].join('') : hex
}

export const hexToRGB = function (valOrMap) {
  if (typeof valOrMap instanceof Map) {
    for (const [ key, val ] of valOrMap) {
      valOrMap.set(key, hexToRGB(val))
    }
    return valOrMap
  }

  if (!/#[0-9a-f]{3,6}/.test(valOrMap)) { return valOrMap }

  valOrMap = fullHex(valOrMap)

  return 'rgb(' + [
    parseInt(valOrMap.slice(1, 3), 16),
    parseInt(valOrMap.slice(3, 5), 16),
    parseInt(valOrMap.slice(5, 7), 16)
  ].join(',') + ')'
}

export function decamelize (s) {
  return String(s).replace(/([a-z])([A-Z])/g, function (m, g1, g2) {
    return g1 + '-' + g2.toLowerCase()
  })
}

export function camelCase (s) {
  return String(s).replace(/([a-z])-([a-z])/g, function (m, g1, g2) {
    return g1 + g2.toUpperCase()
  })
}

export function removeQuotes (str) {
  if (str.startsWith('"') || str.startsWith("'")) {
    return str.slice(1, -1)
  }
  return str
}

export function htmlEntities (str) {
  return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;')
}

export function unhtmlEntities (str) {
  return String(str).replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace('&quot;', '"')
}

export function cdata (str) {
  return `<![CDATA[${str}]]>`
}

export function comment (str) {
  return `<!--${str}-->`
}

export const splitNotInBrackets = (str, delimiter) => {
  var roundBrackets = 0

  var squareBrackets = 0

  var lastIndex = 0

  var split = []

  var ch; var i; var il

  for (i = 0, il = str.length; i < il; ++i) {
    ch = str.charAt(i)

    if (ch === delimiter && !roundBrackets && !squareBrackets) {
      split.push(str.slice(lastIndex, i).trim())
      lastIndex = i + 1
      continue
    }

    if (ch === '(') ++roundBrackets
    else if (ch === ')') --roundBrackets
    else if (ch === '[') ++squareBrackets
    else if (ch === ']') --squareBrackets
  }

  split.push(str.slice(lastIndex).trim())
  return split
}