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|
package zoopb
import (
"bufio"
"os"
"strings"
)
func (m *Machine) IsInstalled(name string) bool {
for p := range m.Packages.IterByName() {
if name == p.Name {
// log.Info("package installed:", p.Name, p.Version, p.PkgName)
return true
}
}
// log.Info("package not-installed:", name)
return false
}
func (m *Machine) FindInstalledByName(name string) *Package {
if m == nil {
panic("m == nil")
}
if m.Packages == nil {
panic("m.Packages == nil")
}
for p := range m.Packages.IterByName() {
if name == p.Name {
// log.Info("package installed:", p.Name, p.Version, p.PkgName)
return p
}
}
// log.Info("package not-installed:", name)
return nil
}
// looks to see if any package matches a name and version
// if version == "", return the first name found
func (m *Machine) FindVersion(name string) string {
// first check all installed versions
for p := range m.Packages.IterByName() {
if name == p.Name {
return p.Version
}
}
return ""
}
// looks to see if any package matches a name and version
// if version == "", return the first name found
func (m *Machine) FindByVersion(name string, version string) *Package {
// first check all installed versions
for p := range m.Packages.IterByName() {
if name == p.Name {
if version == "" {
return p
} else {
if version == p.Version {
return p
}
}
}
}
// check all wit packages
for p := range m.Wit.IterByName() {
if name == p.Name {
if version == "" {
return p
} else {
if version == p.Version {
return p
}
}
}
}
// log.Info("package not-installed:", name)
return nil
}
// obviously a hack at this point
// read the package list file from mirrors.wit.com
func (m *Machine) InitWitMirrors() error {
m.Wit = new(Packages)
err := m.scanPackageListFile("/var/lib/apt/lists/mirrors.wit.com_wit_dists_sid_main_binary-amd64_Packages")
return err
}
// breaks up the apt list file into sections
// then sends each section to be processed
// and added to zoopb.Machine.Wit
func (m *Machine) scanPackageListFile(filename string) error {
file, err := os.Open(filename)
if err != nil {
return err
}
defer file.Close()
scanner := bufio.NewScanner(file)
var debInfo string
for scanner.Scan() {
line := scanner.Text()
if line == "" {
p := parsePackageInfo(debInfo)
m.Wit.Append(p)
debInfo = ""
}
debInfo += line + "\n"
}
p := parsePackageInfo(debInfo)
m.Wit.Append(p)
return nil
}
/*
func (m *Machine) addPackage(name string, version string, filename string) {
if name == "" {
return
}
// log.Info("addPackage:", name, version, filename)
var deb *DebPackage
var ok bool
deb, ok = allp[name]
if !ok {
deb = NewPackage()
deb.name.SetLabel(name)
allp[name] = deb
}
newversion := new(Version)
newversion.v = version
newversion.file = filename
deb.versions = append(deb.versions, newversion)
}
*/
// parses dpkg -s foo.deb
func parsePackageInfo(lines string) *Package {
var name string
var version string
var filename string
var gopath string
for _, line := range strings.Split(lines, "\n") {
if line == "" {
continue
}
if strings.HasPrefix(line, " ") {
// these are usually Description: lines
continue
}
if strings.HasPrefix(line, "#") {
// skip comment lines. (probably doesn't happen in debian list files
continue
}
line = strings.TrimSpace(line)
parts := strings.Split(line, " ")
if len(parts) < 2 {
continue
}
if parts[0] == "Package:" {
name = parts[1]
}
if parts[0] == "Version:" {
version = parts[1]
}
if parts[0] == "Filename:" {
filename = parts[1]
}
if parts[0] == "GoPath:" {
gopath = parts[1]
}
}
p := Package{
Name: name,
Version: version,
PkgName: filename,
SrcPath: gopath,
}
return &p
}
|
