I generally default to using JSON for data interchange but there are still a myriad of formats of XML out there, for which I have created the xmltojson crate. I originally wrote this one night to help me get an XML dataset into JSON so that I could use PostgreSQL's JSONB
column type, but I only recently published it to crates.io since it may be useful for others.
Cargo.toml
[dependencies]
xmltojson = "0"
The xmltojson
crate implements Stefan Goessner’s xml2json which results in a fairly straightforward conversion of XML data structure into JSON. Take the following XML for example:
<ol class="xoxo">
<li>Subject 1
<ol>
<li>subpoint a</li>
<li>subpoint b</li>
</ol>
</li>
<li>
<span>Subject 2</span>
<ol compact="compact">
<li>subpoint c</li>
<li>subpoint d</li>
</ol>
</li>
</ol>
This XML structured will be rapidly converted into the following JSON, with
attributes and children encoded into the structure:
{
"ol": {
"@class":"xoxo",
"li": [
{
"#text":"Subject 1",
"ol":{
"li":[
"subpoint a",
"subpoint b"
]
}
},
{
"span":"Subject 2",
"ol": {
"@compact":"compact",
"li": [
"subpoint c",
"subpoint d"
]
}
}
]
}
}
There are some oddities with the JSON encoding of XML, particularly around CDATA, but overall I have been quite pleased turning XML into JSON which I can more easily query with jq
, PostgreSQL, or even ingest into Elasticsearch.
If you happen to find any bugs, please submit pull requests on GitHub
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