How to Unzip Password-Protected Zip Files in Golang?

Unzipping Password-Protected Zip Files in Golang

The recent release of Golang 1.2 introduced the archive/zip package. However, it appears to offer basic zip functionality and lacks support for unzipping password-protected zip files. To address this, an alternative approach is to utilize 7zip.

Solution: Using 7zip via Go's os/exec Package

Given that 7zip provides robust zip functionality, including password-protected unzipping, we can leverage Go's os/exec package to execute 7zip commands from within our Go code.

Code Example

The following Go code demonstrates how to extract a password-protected zip file using 7zip:

<code class="go">import (
    "fmt"
    "os"
    "os/exec"
)

func main() {
    zipPath := "path/to/password-protected.zip"
    extractPath := "path/to/extract/to"
    password := "secret"

    // Construct the 7zip command string
    commandString := fmt.Sprintf(`7za e %s -o%s -p"%s" -aoa`, zipPath, extractPath, password)
    commandSlice := strings.Fields(commandString)

    // Execute the 7zip command
    c := exec.Command(commandSlice[0], commandSlice[1:]...)
    err := c.Run()
    if err != nil {
        panic(err)
    }

    fmt.Printf("Unzipped password-protected zip file to %s\n", extractPath)
}</code>

Usage

• Ensure that 7zip is installed and accessible on your system.
• Adjust the zipPath and extractPath variables to the actual locations of the password-protected zip file and the desired extraction directory, respectively.
• Run the Go program to perform the password-protected zip extraction.

This solution effectively utilizes 7zip's proven zip functionality, providing a straightforward way for Golang developers to handle password-protected zip files.

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