英文:
In Go code, how can I read the content appended to a bin file
问题
我将为您翻译以下内容：
我将Go代码构建为二进制文件（bin/app），然后使用以下命令将一个字符串追加到二进制文件中：
echo -n -e \\x66\\x6f\\x6f >> bin/app
如果您使用文本编辑器打开二进制文件，您会发现在0000之后添加了内容666f 6f，这是正确的：
7465 0000 0000 0000 0000 0000 0000 0000
666f 6f
问题是如何在Go代码中读取追加到二进制文件中的内容666f 6f？非常感谢！
英文:
I build Go code to binary file (bin/app), then append a string to the binary file by using below command:
echo -n -e \\x66\\x6f\\x6f >> bin/app
If you open the binary file with a txt editor, you will find the added content 666f 6f after 0000, which is right:
7465 0000 0000 0000 0000 0000 0000 0000
666f 6f
The question is how can I read the content 666f 6f appendeded to the binary in Go code? Thanks a lot!
答案1
得分: 1
传统上，有第三方包（例如go-bindata）可用于将数据附加到Go二进制文件中，但是从Go 1.16开始，还有更方便的内置embed包来完成这个任务。
要实现你所要求的，你只需要“匿名”导入embed，然后使用go:embed指令将文件text.txt的内容作为变量txt可用：
package main
import _ "embed"
import "fmt"
//go:embed text.txt
var txt string
func main() {
fmt.Println(txt);
}
对于像你的示例中的二进制数据，使用字节切片更方便：
//go:embed data.bin
var b []byte
英文:
Traditionally there have been third party packages (e.g. go-bindata) available to append data to Go binaries, but as of Go 1.16, there is the even more convenient built-in embed package to do that.
All you have to do to accomplish what you asked is to "anonymously" import embed and then use the go:embed directive to make the content of the file text.txt available as the variable txt:
package main
import _ "embed"
import "fmt"
//go:embed text.txt
var txt string
func main() {
fmt.Println(txt);
}
For binary data as in your example, it's more convenient to use a slice of bytes:
//go:embed data.bin
var b []byte
For more details, see this blog post and the official docs.
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