bojanbjelic / xml2json Goto Github PK

XSLT doesn't handle scalar arrays well, shown actual and expected outputs.

Input xml:

<test>
	<child1>1</child1>
	<twin>2</twin>
	<twin>3</twin>
	<child2>4</child2>
</test>

Output Json::

{
  "test": {
    "child1": "1",
    "twin": [
      {
        "twin": "2"
      },
      {
        "twin": "3"
      }
    ],
    "child2": "4"
  }
}

Expected Json::

{
  "test": {
    "child1": "1",
    "twin": [
      "2",
      "3"
    ],
    "child2": "4"
  }
}

A very simple single element XML document does not work, for example:
<test a="one" />
This XML does not get matched by the main match
match="/*[node()]"
However if I remove the node test from that so the main match is simply
match="/*"
then the XML gets transformed as expected to
{"test" : {"a" : "one"}}
I tried it with more complex XML and it seems to still work, can you please let me know why the node test is there and what the negative impact of removing it will be?

Thanks

This project is great, but only generates quoted output when sometimes we also want doubles, integers, etc. I propose figuring out how to load an XSD for type checking during the transform. The below is really simple, but worked for my needs 👍

Modify xml2json as follows:

<!-- Load the XSD so we can use it to look up data types during conversion --> <xsl:variable name="xsd" select="document('YOUR_SCHEMA.xsd')"/>

<xsl:template match="*" mode="detect"> ... <xsl:when test="count(./child::*) = 0"> <!-- This is a niave type check, but works for my simple case --> <xsl:variable name="pName" select="name(..)" /> <xsl:variable name="eltName" select="local-name()" /> <xsl:variable name="optionType" select="$xsd//xs:element[@name = $pName]//xs:element[@name = $eltName]/@type" /> <!-- Use optionType to determine to quote or not --> <xsl:choose> <xsl:when test="$optionType = 'xs:double' or $optionType = 'xs:int'"> <xsl:text>"</xsl:text><xsl:value-of select="name()"/>" : <xsl:apply-templates select="."/> </xsl:when> <xsl:otherwise> <xsl:text>"</xsl:text><xsl:value-of select="name()"/>" : "<xsl:apply-templates select="."/><xsl:text>"</xsl:text> </xsl:otherwise> </xsl:choose> <xsl:if test="count(following-sibling::*) &gt; 0">, </xsl:if> </xsl:when> </xsl:choose> </xsl:template> ...

This is a basic idea, but in this way you can output typed data too.

No escaping of required characters by JSON according to json.org

escape
'"'
''
'/'
'b'
'n'
'r'
't'
'u' hex hex hex hex