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‎LICENSE

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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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limitations under the License.

‎README.md

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# Golang apt client
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This is a golang client library for Debian APT Package Manager (`dpkg` and `apt`).
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## License
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Copyright (C) 2017 Arduino AG (http://www.arduino.cc/)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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‎apt.go

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//
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// This file is part of go-apt-client library
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//
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// Copyright (C) 2017 Arduino AG (http://www.arduino.cc/)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package apt
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import (
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"bufio"
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"bytes"
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"fmt"
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"os/exec"
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"regexp"
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"strings"
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)
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// Package is a package available in the APT system
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type Package struct {
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Name string
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Status string
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Architecture string
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Version string
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}
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// List returns a list of packages available in the system with their
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// respective status.
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func List() ([]*Package, error) {
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cmd := exec.Command("dpkg-query", "-W", "-f=${Package}\t${Architecture}\t${db:Status-Status}\t${Version}\n")
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out, err := cmd.Output()
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if err != nil {
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return nil, fmt.Errorf("running dpkg-query: %s", err)
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}
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res := []*Package{}
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scanner := bufio.NewScanner(bytes.NewReader(out))
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for scanner.Scan() {
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data := strings.Split(scanner.Text(), "\t")
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res = append(res, &Package{
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Name: data[0],
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Architecture: data[1],
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Status: data[2],
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Version: data[3],
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})
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}
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return res, nil
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}
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// CheckForUpdates runs an apt update to retrieve new packages available
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// from the repositories
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func CheckForUpdates() (output []byte, err error) {
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cmd := exec.Command("apt-get", "update", "-q")
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return cmd.CombinedOutput()
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}
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// ListUpgradable return all the upgradable packages and the version that
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// is going to be installed if an UpgradeAll is performed
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func ListUpgradable() ([]*Package, error) {
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cmd := exec.Command("apt", "list", "--upgradable")
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out, err := cmd.Output()
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if err != nil {
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return nil, fmt.Errorf("running apt list: %s", err)
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}
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re := regexp.MustCompile(`^([^ ]+) ([^ ]+) ([^ ]+)( \[upgradable from: [^\[\]]*\])?`)
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res := []*Package{}
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scanner := bufio.NewScanner(bytes.NewReader(out))
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for scanner.Scan() {
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matches := re.FindAllStringSubmatch(scanner.Text(), -1)
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if len(matches) == 0 {
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continue
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}
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res = append(res, &Package{
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Name: matches[0][1],
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Status: "upgradable",
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Version: matches[0][2],
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Architecture: matches[0][3],
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})
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}
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return res, nil
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}
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// Upgrade runs the upgrade for a set of packages
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func Upgrade(packs ...*Package) (output []byte, err error) {
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args := []string{"upgrade", "-y"}
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for _, pack := range packs {
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if pack == nil || pack.Name == "" {
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return nil, fmt.Errorf("apt.Upgrade: Invalid package with empty Name")
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}
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args = append(args, pack.Name)
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}
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cmd := exec.Command("apt-get", args...)
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return cmd.CombinedOutput()
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}
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// UpgradeAll upgrade all upgradable packages
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func UpgradeAll() (output []byte, err error) {
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cmd := exec.Command("apt-get", "upgrade", "-y")
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return cmd.CombinedOutput()
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}

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