go-json/compact.go

44 lines
761 B
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2020-08-14 10:01:03 +03:00
package json
import (
"bytes"
)
func compact(dst *bytes.Buffer, src []byte) error {
length := len(src)
for cursor := 0; cursor < length; cursor++ {
c := src[cursor]
switch c {
case ' ', '\t', '\n', '\r':
continue
case '"':
if err := dst.WriteByte(c); err != nil {
return err
}
for {
cursor++
if err := dst.WriteByte(src[cursor]); err != nil {
return err
}
switch src[cursor] {
case '\\':
cursor++
if err := dst.WriteByte(src[cursor]); err != nil {
return err
}
case '"':
goto LOOP_END
case nul:
return errUnexpectedEndOfJSON("string", int64(length))
}
}
default:
if err := dst.WriteByte(c); err != nil {
return err
}
}
LOOP_END:
}
return nil
}