From c7e4dc3bd9fcf4785b31122c968f209aece1a02e Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Fri, 20 Feb 2026 12:39:56 +0800
Subject: Revert "protostream: Add a helper package to frame protocol-v2
 responses"

This reverts commit c91ccc8d139dbf967b73262265712b9ee37cdbf1.
---
 internal/protostream/response.go | 143 ---------------------------------------
 1 file changed, 143 deletions(-)
 delete mode 100644 internal/protostream/response.go

diff --git a/internal/protostream/response.go b/internal/protostream/response.go
deleted file mode 100644
index 773ed228..00000000
--- a/internal/protostream/response.go
+++ /dev/null
@@ -1,143 +0,0 @@
-// Package protostream provides helpers for framing protocol-v2 responses.
-package protostream
-
-import (
-	"io"
-
-	"codeberg.org/lindenii/furgit/pktline"
-)
-
-// StreamCode identifies the multiplexed stream in a side-band pkt-line payload.
-type StreamCode byte
-
-const (
-	StreamData     StreamCode = 1
-	StreamProgress StreamCode = 2
-	StreamError    StreamCode = 3
-)
-
-const (
-	// maxPktLineData is the maximum pkt-line payload size (len excludes header).
-	// See gitprotocol-common(5); the maximum pkt-line length is 65520, including header.
-	maxPktLineData = 65516
-	// maxSidebandData is max pkt-line payload minus 1 byte for the stream code.
-	maxSidebandData = maxPktLineData - 1
-)
-
-// ResponseOptions configures how responses are framed.
-type ResponseOptions struct {
-	// NoProgress suppresses progress messages (stream code 2).
-	NoProgress bool
-	// SidebandAll enables side-banding for all non-flush/delim/response-end pkt-lines.
-	SidebandAll bool
-}
-
-// ResponseWriter writes protocol-v2 responses with optional side-band multiplexing.
-type ResponseWriter struct {
-	pw   *pktline.Writer
-	opts ResponseOptions
-}
-
-// NewResponseWriter returns a ResponseWriter wrapping pw.
-func NewResponseWriter(pw *pktline.Writer, opts ResponseOptions) *ResponseWriter {
-	return &ResponseWriter{
-		pw:   pw,
-		opts: opts,
-	}
-}
-
-// WriteLine writes a pkt-line payload. If SidebandAll is enabled, the payload
-// is sent on StreamData.
-func (rw *ResponseWriter) WriteLine(payload []byte) error {
-	if rw.opts.SidebandAll {
-		return rw.writeStream(StreamData, payload, false)
-	}
-	return rw.pw.WriteLine(payload)
-}
-
-// Flush writes a flush-pkt.
-func (rw *ResponseWriter) Flush() error {
-	return rw.pw.Flush()
-}
-
-// Delim writes a delim-pkt.
-func (rw *ResponseWriter) Delim() error {
-	return rw.pw.Delim()
-}
-
-// ResponseEnd writes a response-end pkt.
-func (rw *ResponseWriter) ResponseEnd() error {
-	return rw.pw.ResponseEnd()
-}
-
-// PackWriter returns an io.Writer that emits pack data on StreamData.
-func (rw *ResponseWriter) PackWriter() io.Writer {
-	return packWriter{rw: rw}
-}
-
-// WritePack writes pack data on StreamData.
-func (rw *ResponseWriter) WritePack(p []byte) error {
-	if len(p) == 0 {
-		return nil
-	}
-	return rw.writeStream(StreamData, p, false)
-}
-
-// WriteProgress writes a progress message on StreamProgress.
-func (rw *ResponseWriter) WriteProgress(p []byte) error {
-	if rw.opts.NoProgress || len(p) == 0 {
-		return nil
-	}
-	return rw.writeStream(StreamProgress, p, false)
-}
-
-// WriteError writes a fatal error message on StreamError.
-func (rw *ResponseWriter) WriteError(p []byte) error {
-	if len(p) == 0 {
-		return nil
-	}
-	return rw.writeStream(StreamError, p, false)
-}
-
-// Keepalive writes a side-band progress keepalive ("0005\\2").
-func (rw *ResponseWriter) Keepalive() error {
-	if rw.opts.NoProgress {
-		return nil
-	}
-	return rw.writeStream(StreamProgress, nil, true)
-}
-
-func (rw *ResponseWriter) writeStream(code StreamCode, p []byte, allowEmpty bool) error {
-	if !allowEmpty && len(p) == 0 {
-		return nil
-	}
-
-	buf := make([]byte, 1+maxSidebandData)
-	for len(p) > 0 || allowEmpty {
-		n := len(p)
-		if n > maxSidebandData {
-			n = maxSidebandData
-		}
-		buf[0] = byte(code)
-		if n > 0 {
-			copy(buf[1:], p[:n])
-		}
-		if err := rw.pw.WriteLine(buf[:1+n]); err != nil {
-			return err
-		}
-		p = p[n:]
-		allowEmpty = false
-	}
-	return nil
-}
-
-type packWriter struct {
-	rw *ResponseWriter
-}
-
-func (pw packWriter) Write(p []byte) (int, error) {
-	if err := pw.rw.WritePack(p); err != nil {
-		return 0, err
-	}
-	return len(p), nil
-}
-- 
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