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package libfastimport
import (
"io"
"bufio"
"git.lukeshu.com/go/libfastimport/textproto"
)
type Frontend struct {
w *bufio.Writer
fiw *textproto.FIWriter
cbr *textproto.CatBlobReader
}
func NewFrontend(w io.Writer, r io.Reader) *Frontend {
ret := Frontend{}
ret.w = bufio.NewWriter(w)
ret.fiw = textproto.NewFIWriter(ret.w)
if r != nil {
ret.cbr = textproto.NewCatBlobReader(r)
}
return &ret
}
func (f *Frontend) Do(cmd Cmd) error {
err := cmd.fiWriteCmd(f.fiw)
if err != nil {
return err
}
return f.w.Flush()
}
func (f *Frontend) GetMark(cmd CmdGetMark) (string, error) {
err := f.Do(cmd)
if err != nil {
return "", err
}
line, err := f.cbr.ReadLine()
if err != nil {
return "", err
}
return cbpGetMark(line)
}
func (f *Frontend) CatBlob(cmd CmdCatBlob) (sha1 string, data string, err error) {
err = f.Do(cmd)
if err != nil {
return "", "", err
}
line, err := f.cbr.ReadLine()
if err != nil {
return "", "", err
}
return cbpCatBlob(line)
}
func (f *Frontend) Ls(cmd CmdLs) (mode textproto.Mode, dataref string, path textproto.Path, err error) {
err = f.Do(cmd)
if err != nil {
return 0, "", "", err
}
line, err := f.cbr.ReadLine()
if err != nil {
return 0, "", "", err
}
return cbpLs(line)
}
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