| // Copyright 2024 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // This file contains support functions for exportdata. | |
| package exportdata | |
| import ( | |
| "bufio" | |
| "io" | |
| "strconv" | |
| "strings" | |
| ) | |
| // Copy of cmd/internal/archive.ReadHeader. | |
| func readArchiveHeader(b *bufio.Reader, name string) int { | |
| // architecture-independent object file output | |
| const HeaderSize = 60 | |
| var buf [HeaderSize]byte | |
| if _, err := io.ReadFull(b, buf[:]); err != nil { | |
| return -1 | |
| } | |
| aname := strings.Trim(string(buf[0:16]), " ") | |
| if !strings.HasPrefix(aname, name) { | |
| return -1 | |
| } | |
| asize := strings.Trim(string(buf[48:58]), " ") | |
| i, _ := strconv.Atoi(asize) | |
| return i | |
| } | |