90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package spm
|
|
|
|
import (
|
|
"archive/tar"
|
|
"compress/gzip"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
// DecompressPackage determines the package format and decompresses it
|
|
func DecompressPackage(downloadDir, packageName, arch, osName, pkgType, release, version string) (string, error) {
|
|
// 1) Construct the .tar.gz name
|
|
expectedFileName := fmt.Sprintf(
|
|
"%s@%s@%s@%s@%s@%s.tar.gz",
|
|
packageName, arch, osName, pkgType, release, version,
|
|
)
|
|
packagePath := filepath.Join(downloadDir, expectedFileName)
|
|
|
|
// Check that file exists
|
|
if _, err := os.Stat(packagePath); os.IsNotExist(err) {
|
|
return "", fmt.Errorf("package file not found: %s", packagePath)
|
|
}
|
|
|
|
// 2) Build the folder path (minus ".tar.gz")
|
|
folderName := strings.TrimSuffix(expectedFileName, ".tar.gz")
|
|
tempDir := GetTempDir() // e.g. C:\Users\<User>\AppData\Local\Temp\spm_temp_164326
|
|
decompressDir := filepath.Join(tempDir, folderName)
|
|
|
|
// Ensure the folder
|
|
if err := os.MkdirAll(decompressDir, 0755); err != nil {
|
|
return "", fmt.Errorf("failed to create decompressDir: %w", err)
|
|
}
|
|
|
|
// 3) Decompress everything into `decompressDir`
|
|
if err := decompressTarGz(packagePath, decompressDir); err != nil {
|
|
return "", fmt.Errorf("failed to decompress: %w", err)
|
|
}
|
|
|
|
// Return the folder path we used
|
|
return decompressDir, nil
|
|
}
|
|
|
|
func decompressTarGz(srcFile, destDir string) error {
|
|
f, err := os.Open(srcFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
gzr, err := gzip.NewReader(f)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer gzr.Close()
|
|
|
|
tarReader := tar.NewReader(gzr)
|
|
for {
|
|
header, err := tarReader.Next()
|
|
if err == io.EOF {
|
|
break
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
outPath := filepath.Join(destDir, header.Name)
|
|
switch header.Typeflag {
|
|
case tar.TypeDir:
|
|
if err := os.MkdirAll(outPath, os.FileMode(header.Mode)); err != nil {
|
|
return err
|
|
}
|
|
case tar.TypeReg:
|
|
outFile, err := os.Create(outPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = io.Copy(outFile, tarReader)
|
|
outFile.Close()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
// huh
|
|
}
|
|
}
|
|
return nil
|
|
}
|