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write.go
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write.go
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package props
import (
"io"
)
var escapes = map[uint8][]byte{
'\r': []byte("\\r"),
'\n': []byte("\\n"),
'\t': []byte("\\t"),
'\f': []byte("\\f"),
'\\': []byte("\\\\"),
}
func write_escaped(w io.Writer, s string) error {
again:
for i := 0; i < len(s); i++ {
c := s[i]
//fmt.Printf("%#v (%T) %#v\n", c, c, string(c))
if c == '\r' || c == '\n' || c == '\t' || c == '\f' || c == '\\' {
if i > 0 {
_, err := w.Write([]byte(s[:i]))
if err != nil {
return err
}
s = s[i:]
goto again
}
_, err := w.Write(escapes[c])
if err != nil {
return err
}
s = s[1:]
goto again
}
}
if len(s) > 0 {
_, err := w.Write([]byte(s))
return err
}
return nil
}
func (e *Encoder) Encode(c *Chunk) error {
if c.Key == "" {
_, err := e.w.Write([]byte(c.Value))
return err
}
err := write_escaped(e.w, c.Key)
if err != nil {
return err
}
err = write_escaped(e.w, "=")
if err != nil {
return err
}
err = write_escaped(e.w, c.Value)
if err != nil {
return err
}
_, err = e.w.Write([]byte("\n"))
return err
}