validate-with-xmllint
Advanced tools
Wrapper for `xmllint`. Easy validation of XML. XML Schemas and DTDs supported. Zero dependencies.
Wrapper for xmllint. Easy validation of XML. XML Schemas and DTDs supported. Zero dependencies.
function validateXML(input: string | Buffer): Promise<void>function validateXMLWithDTD(input: string | Buffer): Promise<void>function validateXMLWithXSD(input: string | Buffer, xsdfile: string | Buffer): Promise<void>xmllint is verified during installation timeconst {
validateXML,
validateXMLWithDTD,
validateXMLWithXSD
} = require("validate-with-xmllint");
All the examples below return promises which will eventually resolve.
validateXML("<hello>world!</hello>");
validateXML("<tiny/>");
/**
* All referenced DTD's must be available locally as `xmllint`
* is invoked with `--nonet` which prevents network connections
**/
validateXMLWithDTD(
`<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE root SYSTEM "./test/dtds/valid-dtd.dtd">
<root>
<body/>
<body/>
</root>`
);
/**
* Path to XSD Schema file must be provided with the document
**/
validateXMLWithXSD(
`<?xml version="1.0"?>
<root>
<text>
DEMO
</text>
<body>
<name>foo</name>
</body>
</root>`,
"./test/xsds/valid-xsd.xsd"
);
All the examples below return promises which will eventually reject with the output from xmllint.
validateXML("<open_tag_only>");
validateXML("garbage");
validateXMLWithDTD(
`<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE root SYSTEM "./test/dtds/valid-dtd.dtd">
<this>
Not allowed by the dtd!
</this>`
);
validateXMLWithXSD(
`<?xml version="1.0"?>
<root>
<something_unexpected_here/>
</root>`,
"./test/xsds/valid-xsd.xsd"
);
See more demos within the tests.
The validate-with-xmllint is a wrapper for program xmllint. A postinstall script fails if it is not available. See next section for further info.
xmllint?You might already have it. Execute xmllint --version and see what it prints out.
On Debian distros look up libxml2-utils, on RedHat libxml2. A recent version of xmllint should be bundled by default on MacOS.
This package runs a postinstall script to verify that you have xmllint available.
The promise is rejected with the error output from xmllint. The error contains all the available details. Expect to see something like this:
Error: xmllint exited with code 3 when executed with xmllint --schema /Users/aautio/foobar/validate-with-xmllint/test/xsds/valid-xsd.xsd --noout --nonet -:
-:2: element root: Schemas validity error : Element 'root': Missing child element(s). Expected is ( body ).
- fails to validate
FAQs
Wrapper for `xmllint`. Easy validation of XML. XML Schemas and DTDs supported. Zero dependencies.
The npm package validate-with-xmllint receives a total of 7,290 weekly downloads. As such, validate-with-xmllint popularity was classified as popular.
We found that validate-with-xmllint demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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