How Can I Unmarshal ISO-8859-1 Encoded XML in Go?

Unmarshaling XML Encoded in ISO-8859-1 Using Go

The popular Unmarshal function in Go's xml package can be challenging if your XML input is not encoded in UTF-8. To handle such inputs, Go requires a CharsetReader.

Where to Find a CharsetReader?

In recent versions of Go (2015 onwards), the golang.org/x/net/html/charset package provides the necessary functionality. The NewReaderLabel function within this package can perform the necessary conversion.

Code Example

The following code snippet demonstrates how to use NewReaderLabel to correctly unmarshal an XML input encoded in ISO-8859-1:

import (
    "encoding/xml"
    "golang.org/x/net/html/charset"
    "bytes"
)

var theXml = [...]byte{byte(0x3C), byte(0x3F), byte(0x78), byte(0x6D), /* ... */}

reader := bytes.NewReader(theXml)
decoder := xml.NewDecoder(reader)
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&parsed)

By incorporating this code, Go can successfully unmarshal XML inputs encoded in ISO-8859-1.

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