swadhinbiswas feat: initial release of VEET (Universal Linux App Uninstaller & Deep-Clean Residual Purger) · 8/15/2026
5e0888a
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package detector
import (
"bufio"
"context"
"strings"
"github.com/swadhinbiswas/veet/internal/model"
)
type orphanDetector struct {
ex Execer
}
// NewOrphanDetector finds unused orphaned dependencies across package managers.
func NewOrphanDetector(ex Execer) Detector {
return &orphanDetector{ex: ex}
}
func (d *orphanDetector) Source() string { return "orphan" }
func (d *orphanDetector) Available() bool {
for _, tool := range []string{"pacman", "apt-get", "dnf", "zypper"} {
if _, err := d.ex.LookPath(tool); err == nil {
return true
}
}
return false
}
func (d *orphanDetector) Detect(ctx context.Context) ([]model.AppInfo, error) {
if _, err := d.ex.LookPath("pacman"); err == nil {
return d.detectPacmanOrphans(ctx)
}
if _, err := d.ex.LookPath("apt-get"); err == nil {
return d.detectAptOrphans(ctx)
}
if _, err := d.ex.LookPath("dnf"); err == nil {
return d.detectDnfOrphans(ctx)
}
return nil, nil
}
func (d *orphanDetector) detectPacmanOrphans(ctx context.Context) ([]model.AppInfo, error) {
out, err := Exec(ctx, d.ex, "pacman", "-Qdt")
if err != nil || strings.TrimSpace(out) == "" {
return nil, nil
}
var apps []model.AppInfo
scanner := bufio.NewScanner(strings.NewReader(out))
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if line == "" {
continue
}
fields := strings.Fields(line)
if len(fields) < 2 {
continue
}
pkgName := fields[0]
pkgVer := fields[1]
// Get package size from pacman -Qi
var sizeKB int64
if qi, err := Exec(ctx, d.ex, "pacman", "-Qi", pkgName); err == nil {
for _, qline := range strings.Split(qi, "\n") {
if strings.HasPrefix(qline, "Installed Size") {
parts := strings.SplitN(qline, ":", 2)
if len(parts) == 2 {
sizeKB = parseHumanSize(parts[1])
}
break
}
}
}
apps = append(apps, model.AppInfo{
Name: pkgName,
Version: pkgVer,
Source: "orphan",
InstallSizeKB: sizeKB,
Status: "Installed",
})
}
return apps, nil
}
func (d *orphanDetector) detectAptOrphans(ctx context.Context) ([]model.AppInfo, error) {
out, err := Exec(ctx, d.ex, "apt-get", "-s", "autoremove")
if err != nil || strings.TrimSpace(out) == "" {
return nil, nil
}
var apps []model.AppInfo
scanner := bufio.NewScanner(strings.NewReader(out))
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if strings.HasPrefix(line, "Remv ") {
fields := strings.Fields(line)
if len(fields) >= 2 {
ver := "-"
if len(fields) >= 3 {
ver = strings.Trim(fields[2], "[]()")
}
apps = append(apps, model.AppInfo{
Name: fields[1],
Version: ver,
Source: "orphan",
Status: "Installed",
})
}
}
}
return apps, nil
}
func (d *orphanDetector) detectDnfOrphans(ctx context.Context) ([]model.AppInfo, error) {
out, err := Exec(ctx, d.ex, "dnf", "repoquery", "--unneeded", "-q")
if err != nil || strings.TrimSpace(out) == "" {
return nil, nil
}
var apps []model.AppInfo
scanner := bufio.NewScanner(strings.NewReader(out))
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if line == "" {
continue
}
apps = append(apps, model.AppInfo{
Name: line,
Version: "-",
Source: "orphan",
Status: "Installed",
})
}
return apps, nil
}