overpass-frontend/src/parseString.js

A JavaScript (NodeJS/Browser) library to easily access data from OpenStreetMap via Overpass API or from an OSM File. The objects can directly be used with LeafletJS or exported to GeoJSON. Data will be cached in the browser memory.

module.exports = function parseString (str) {
  let result = ''
  const chr = str[0]
  str = str.slice(1)

  while (str.length) {
    const m = str.match('^[^\\\\' + chr + ']+')
    if (m) {
      result += m[0]
      str = str.slice(m[0].length)
    } else if (str[0] === '\\') {
      result += str[1]
      str = str.slice(2)
    } else if (str[0] === chr) {
      str = str.slice(1)
      return [result, str]
    } else {
      throw new Error("Can't parse string from query: " + str)
    }
  }

  throw new Error("Can't parse string, no string end detected!")
}