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Add a ListInstalled function #13

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Add a ListInstalled function #13

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15 changes: 14 additions & 1 deletion apt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,10 +44,23 @@ func List() ([]*Package, error) {
return Search("*")
}

// ListInstalled returns a list of packages installed on the system.
func ListInstalled() ([]*Package, error) {
return Search("")
}

// Search list packages available in the system that match the search
// pattern
func Search(pattern string) ([]*Package, error) {
cmd := exec.Command("dpkg-query", "-W", "-f=${Package}\t${Architecture}\t${db:Status-Status}\t${Version}\t${Installed-Size}\t${Binary:summary}\n", pattern)
args := []string{
"-W",
"-f=${Package}\t${Architecture}\t${db:Status-Status}\t${Version}\t${Installed-Size}\t${Binary:summary}\n",
}
if pattern != "" {
args = append(args, pattern)
}

cmd := exec.Command("dpkg-query", args...)

out, err := cmd.CombinedOutput()
if err != nil {
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