grokify/mogo

package xmlutil

import (
    "encoding/xml"
    "io"
    "os"
)

func MarshalIndent(v any, prefix, indent string, addDoctype bool) ([]byte, error) {
    if data, err := xml.MarshalIndent(v, prefix, indent); err != nil || !addDoctype {
        return data, err
    } else {
        out := []byte(xml.Header)
        return append(out, data...), nil
    }
}

func UnmarshalFile(name string, v any) error {
    if f, err := os.Open(name); err != nil {
        return err
    } else {
        defer f.Close()
        return UnmarshalReader(f, v)
    }
}

func UnmarshalReader(r io.Reader, v any) error {
    if data, err := io.ReadAll(r); err != nil {
        return err
    } else {
        return xml.Unmarshal(data, v)
    }
}