/
xml-evidence.go
96 lines (76 loc) · 1.52 KB
/
xml-evidence.go
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package exhibit
import (
"bytes"
"encoding/xml"
"github.com/toshaf/exhibit/core"
"github.com/toshaf/exhibit/text"
"io"
"io/ioutil"
)
type xmlEvidence struct {
bytes.Buffer
}
func (*xmlEvidence) Extension() string {
return ".xml"
}
func (x *xmlEvidence) Check(approved io.Reader) ([]core.Diff, error) {
return text.Compare(approved, &x.Buffer)
}
func (x *xmlEvidence) GetValue() ([]byte, error) {
v, err := ioutil.ReadAll(&x.Buffer)
if err != io.EOF && err != nil {
return v, err
}
return v, nil
}
func XML(v []byte) Evidence {
buf, err := indentXml(bytes.NewReader(v))
if err != nil {
return writeErrorXml(err)
}
buf.Write([]byte{'\n'})
return &xmlEvidence{buf}
}
func XMLFormatted(v []byte) Evidence {
buf := bytes.NewBuffer(v)
buf.Write([]byte("\n"))
return &xmlEvidence{*buf}
}
func XMLString(v string) Evidence {
return XML([]byte(v))
}
func XMLObj(v interface{}) Evidence {
b, err := xml.Marshal(v)
if err != nil {
return writeErrorXml(err)
}
return XML(b)
}
func XMLReader(r io.Reader) Evidence {
b, e := ioutil.ReadAll(r)
if e != nil {
return writeErrorXml(e)
}
return XML(b)
}
func writeErrorXml(err error) Evidence {
return &xmlEvidence{writeError(err)}
}
func indentXml(rdr io.Reader) (bytes.Buffer, error) {
dec := xml.NewDecoder(rdr)
buf := bytes.Buffer{}
enc := xml.NewEncoder(&buf)
enc.Indent("", "\t")
for {
token, err := dec.Token()
switch err {
case io.EOF:
return buf, nil
default:
return buf, err
case nil:
}
enc.EncodeToken(token)
enc.Flush()
}
}