Function collectAnHTTPQuotedString

deps/undici/src/lib/web/fetch/data-url.js:397–467

* @param {string} input * @param {{ position: number }} position * @param {boolean} [extractValue=false]

(input, position, extractValue = false)

 * @param {boolean} [extractValue=false]
 */
function collectAnHTTPQuotedString (input, position, extractValue = false) {
  // 1. Let positionStart be position.
  const positionStart = position.position

  // 2. Let value be the empty string.
  let value = ''

  // 3. Assert: the code point at position within input
  // is U+0022 (").
  assert(input[position.position] === '"')

  // 4. Advance position by 1.
  position.position++

  // 5. While true:
  while (true) {
    // 1. Append the result of collecting a sequence of code points
    // that are not U+0022 (") or U+005C (\) from input, given
    // position, to value.
    value += collectASequenceOfCodePoints(
      (char) => char !== '"' && char !== '\\',
      input,
      position
    )

    // 2. If position is past the end of input, then break.
    if (position.position >= input.length) {
      break
    }

    // 3. Let quoteOrBackslash be the code point at position within
    // input.
    const quoteOrBackslash = input[position.position]

    // 4. Advance position by 1.
    position.position++

    // 5. If quoteOrBackslash is U+005C (\), then:
    if (quoteOrBackslash === '\\') {
      // 1. If position is past the end of input, then append
      // U+005C (\) to value and break.
      if (position.position >= input.length) {
        value += '\\'
        break
      }

      // 2. Append the code point at position within input to value.
      value += input[position.position]

      // 3. Advance position by 1.
      position.position++

    // 6. Otherwise:
    } else {
      // 1. Assert: quoteOrBackslash is U+0022 (").
      assert(quoteOrBackslash === '"')

      // 2. Break.