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Leonidas-from-XIV / node-xml2js

XML to JavaScript object converter.
MIT License
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Builder can't generate the same xml passed to parseString #621

Closed lengerrong closed 2 years ago

lengerrong commented 2 years ago 
let originXml = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><a:p><a:pPr marL="0" lvl="0" indent="0" algn="ctr" rtl="0"><a:spcBef><a:spcPts val="0"/></a:spcBef><a:spcAft><a:spcPts val="0"/></a:spcAft><a:buClr><a:schemeClr val="dk1"/></a:buClr><a:buSzPts val="1100"/><a:buFont typeface="Arial"/><a:buNone/></a:pPr><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>first line</a:t></a:r><a:br><a:rPr lang="en-CA" altLang="ja-JP" dirty="0"/></a:br><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>second line</a:t></a:r><a:endParaRPr lang="ja-JP" altLang="en-US" dirty="0"/></a:p>'

  xml2js.parseString(originXml, function(err, js) {
    let builder = new xml2js.Builder({ renderOpts: { pretty: false } });
    let newxml = builder.buildObject(js);
    console.log(originXml)
    console.log(newxml)
    console.log(originXml === newxml)
  });

The out put is

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><a:p><a:pPr marL="0" lvl="0" indent="0" algn="ctr" rtl="0"><a:spcBef><a:spcPts val="0"/></a:spcBef><a:spcAft><a:spcPts val="0"/></a:spcAft><a:buClr><a:schemeClr val="dk1"/></a:buClr><a:buSzPts val="1100"/><a:buFont typeface="Arial"/><a:buNone/></a:pPr><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>first line</a:t></a:r><a:br><a:rPr lang="en-CA" altLang="ja-JP" dirty="0"/></a:br><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>second line</a:t></a:r><a:endParaRPr lang="ja-JP" altLang="en-US" dirty="0"/></a:p>
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><a:p><a:pPr marL="0" lvl="0" indent="0" algn="ctr" rtl="0"><a:spcBef><a:spcPts val="0"/></a:spcBef><a:spcAft><a:spcPts val="0"/></a:spcAft><a:buClr><a:schemeClr val="dk1"/></a:buClr><a:buSzPts val="1100"/><a:buFont typeface="Arial"/><a:buNone/></a:pPr><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>first line</a:t></a:r><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>second line</a:t></a:r><a:br><a:rPr lang="en-CA" altLang="ja-JP" dirty="0"/></a:br><a:endParaRPr lang="ja-JP" altLang="en-US" dirty="0"/></a:p>
false

Is there a way to ensure Builder can generate the same xml?

lengerrong commented 2 years ago

tried to use {preserveChildrenOrder:true} parser option, but still can't work. see https://github.com/Leonidas-from-XIV/node-xml2js/issues/622

lengerrong commented 2 years ago

lucky to find this lib: https://github.com/nashwaan/xml-js

its main feature: Maintain Order of Elements

  let originXml = '<a:p><a:pPr marL="0" lvl="0" indent="0" algn="ctr" rtl="0"><a:spcBef><a:spcPts val="0"/></a:spcBef><a:spcAft><a:spcPts val="0"/></a:spcAft><a:buClr><a:schemeClr val="dk1"/></a:buClr><a:buSzPts val="1100"/><a:buFont typeface="Arial"/><a:buNone/></a:pPr><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>first line</a:t></a:r><a:br><a:rPr lang="en-CA" altLang="ja-JP" dirty="0"/></a:br><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>second line</a:t></a:r><a:endParaRPr lang="ja-JP" altLang="en-US" dirty="0"/></a:p>'
  let result1 = convert.xml2json(originXml);
  let result2 = convert.json2xml(result1);
  console.log(result2);
  console.log(originXml === result2)
<a:p><a:pPr marL="0" lvl="0" indent="0" algn="ctr" rtl="0"><a:spcBef><a:spcPts val="0"/></a:spcBef><a:spcAft><a:spcPts val="0"/></a:spcAft><a:buClr><a:schemeClr val="dk1"/></a:buClr><a:buSzPts val="1100"/><a:buFont typeface="Arial"/><a:buNone/></a:pPr><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>first line</a:t></a:r><a:br><a:rPr lang="en-CA" altLang="ja-JP" dirty="0"/></a:br><a:r><a:rPr lang="ja-JP" altLang="en-US"/><a:t>second line</a:t></a:r><a:endParaRPr lang="ja-JP" altLang="en-US" dirty="0"/></a:p>
true