mirror of https://github.com/golang/go.git
33 lines
742 B
Go
33 lines
742 B
Go
// 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
|
|
}
|