Function validate

src/validator.js:11–191

(xmlData, options)

//const tagsPattern = new RegExp("<\\/?([\\w:\\-_\.]+)\\s*\/?>","g");
export function validate(xmlData, options) {
  options = Object.assign({}, defaultOptions, options);

  //xmlData = xmlData.replace(/(\r\n|\n|\r)/gm,"");//make it single line
  //xmlData = xmlData.replace(/(^\s*<\?xml.*?\?>)/g,"");//Remove XML starting tag
  //xmlData = xmlData.replace(/(<!DOCTYPE[\s\w\"\.\/\-\:]+(\[.*\])*\s*>)/g,"");//Remove DOCTYPE
  const tags = [];
  let tagFound = false;

  //indicates that the root tag has been closed (aka. depth 0 has been reached)
  let reachedRoot = false;

  if (xmlData[0] === '\ufeff') {
    // check for byte order mark (BOM)
    xmlData = xmlData.substr(1);
  }

  for (let i = 0; i < xmlData.length; i++) {

    if (xmlData[i] === '<' && xmlData[i + 1] === '?') {
      i += 2;
      i = readPI(xmlData, i);
      if (i.err) return i;
    } else if (xmlData[i] === '<') {
      //starting of tag
      //read until you reach to '>' avoiding any '>' in attribute value
      let tagStartPos = i;
      i++;

      if (xmlData[i] === '!') {
        i = readCommentAndCDATA(xmlData, i);
        continue;
      } else {
        let closingTag = false;
        if (xmlData[i] === '/') {
          //closing tag
          closingTag = true;
          i++;
        }
        //read tagname
        let tagName = '';
        for (; i < xmlData.length &&
          xmlData[i] !== '>' &&
          xmlData[i] !== ' ' &&
          xmlData[i] !== '\t' &&
          xmlData[i] !== '\n' &&
          xmlData[i] !== '\r'; i++
        ) {
          tagName += xmlData[i];
        }
        tagName = tagName.trim();
        //console.log(tagName);

        if (tagName[tagName.length - 1] === '/') {
          //self closing tag without attributes
          tagName = tagName.substring(0, tagName.length - 1);
          //continue;
          i--;