mirror of
https://github.com/vbatts/go-mtree.git
synced 2024-11-22 08:25:38 +00:00
*: clean up
* Get rid of the isErr func in main() * put main() logic closer to the top Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
parent
690c85d4e8
commit
a8e4475c5e
GPG key ID:
10937E57733F1362
3 changed files with 269 additions and 300 deletions
|
|
@ -29,6 +29,255 @@ var (
|
|||
flVersion = flag.Bool("version", false, "display the version of this tool")
|
||||
)
|
||||
|
||||
func main() {
|
||||
// so that defers cleanly exec
|
||||
if err := app(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func app() error {
|
||||
flag.Parse()
|
||||
|
||||
if *flDebug {
|
||||
os.Setenv("DEBUG", "1")
|
||||
}
|
||||
|
||||
if *flVersion {
|
||||
fmt.Printf("%s :: %s\n", mtree.AppName, mtree.Version)
|
||||
return nil
|
||||
}
|
||||
|
||||
// -list-keywords
|
||||
if *flListKeywords {
|
||||
fmt.Println("Available keywords:")
|
||||
for k := range mtree.KeywordFuncs {
|
||||
fmt.Print(" ")
|
||||
fmt.Print(k)
|
||||
if mtree.Keyword(k).Default() {
|
||||
fmt.Print(" (default)")
|
||||
}
|
||||
if !mtree.Keyword(k).Bsd() {
|
||||
fmt.Print(" (not upstream)")
|
||||
}
|
||||
fmt.Print("\n")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// --result-format
|
||||
formatFunc, ok := formats[*flResultFormat]
|
||||
if !ok {
|
||||
return fmt.Errorf("invalid output format: %s", *flResultFormat)
|
||||
}
|
||||
|
||||
var (
|
||||
err error
|
||||
tmpKeywords []string
|
||||
currentKeywords []string
|
||||
)
|
||||
|
||||
// -k <keywords>
|
||||
if *flUseKeywords != "" {
|
||||
tmpKeywords = splitKeywordsArg(*flUseKeywords)
|
||||
if !inSlice("type", tmpKeywords) {
|
||||
tmpKeywords = append([]string{"type"}, tmpKeywords...)
|
||||
}
|
||||
} else {
|
||||
if *flTar != "" {
|
||||
tmpKeywords = mtree.DefaultTarKeywords[:]
|
||||
} else {
|
||||
tmpKeywords = mtree.DefaultKeywords[:]
|
||||
}
|
||||
}
|
||||
|
||||
// -K <keywords>
|
||||
if *flAddKeywords != "" {
|
||||
for _, kw := range splitKeywordsArg(*flAddKeywords) {
|
||||
if !inSlice(kw, tmpKeywords) {
|
||||
tmpKeywords = append(tmpKeywords, kw)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// -bsd-keywords
|
||||
if *flBsdKeywords {
|
||||
for _, k := range tmpKeywords {
|
||||
if mtree.Keyword(k).Bsd() {
|
||||
currentKeywords = append(currentKeywords, k)
|
||||
} else {
|
||||
fmt.Fprintf(os.Stderr, "INFO: ignoring %q as it is not an upstream keyword\n", k)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
currentKeywords = tmpKeywords
|
||||
}
|
||||
|
||||
// Check mutual exclusivity of keywords.
|
||||
// TODO(cyphar): Abstract this inside keywords.go.
|
||||
if inSlice("tar_time", currentKeywords) && inSlice("time", currentKeywords) {
|
||||
return fmt.Errorf("tar_time and time are mutually exclusive keywords")
|
||||
}
|
||||
|
||||
// If we're doing a comparison, we always are comparing between a spec and
|
||||
// state DH. If specDh is nil, we are generating a new one.
|
||||
var (
|
||||
specDh *mtree.DirectoryHierarchy
|
||||
stateDh *mtree.DirectoryHierarchy
|
||||
specKeywords []string
|
||||
)
|
||||
|
||||
// -f <file>
|
||||
if *flFile != "" && !*flCreate {
|
||||
// load the hierarchy, if we're not creating a new spec
|
||||
fh, err := os.Open(*flFile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
specDh, err = mtree.ParseSpec(fh)
|
||||
fh.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// We can't check against more fields than in the specKeywords list, so
|
||||
// currentKeywords can only have a subset of specKeywords.
|
||||
specKeywords = mtree.CollectUsedKeywords(specDh)
|
||||
}
|
||||
|
||||
// -list-used
|
||||
if *flListUsedKeywords {
|
||||
if specDh == nil {
|
||||
return fmt.Errorf("no specification provided. please provide a validation manifest")
|
||||
}
|
||||
|
||||
if *flResultFormat == "json" {
|
||||
// if they're asking for json, give it to them
|
||||
data := map[string][]string{*flFile: specKeywords}
|
||||
buf, err := json.MarshalIndent(data, "", " ")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
fmt.Println(string(buf))
|
||||
} else {
|
||||
fmt.Printf("Keywords used in [%s]:\n", *flFile)
|
||||
for _, kw := range specKeywords {
|
||||
fmt.Printf(" %s", kw)
|
||||
if _, ok := mtree.KeywordFuncs[kw]; !ok {
|
||||
fmt.Print(" (unsupported)")
|
||||
}
|
||||
fmt.Printf("\n")
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
if specKeywords != nil {
|
||||
// If we didn't actually change the set of keywords, we can just use specKeywords.
|
||||
if *flUseKeywords == "" && *flAddKeywords == "" {
|
||||
currentKeywords = specKeywords
|
||||
}
|
||||
|
||||
for _, keyword := range currentKeywords {
|
||||
// As always, time is a special case.
|
||||
// TODO: Fix that.
|
||||
if (keyword == "time" && inSlice("tar_time", specKeywords)) || (keyword == "tar_time" && inSlice("time", specKeywords)) {
|
||||
continue
|
||||
}
|
||||
|
||||
if !inSlice(keyword, specKeywords) {
|
||||
return fmt.Errorf("cannot verify keywords not in mtree specification: %s\n", keyword)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// -p and -T are mutually exclusive
|
||||
if *flPath != "" && *flTar != "" {
|
||||
return fmt.Errorf("options -T and -p are mutually exclusive")
|
||||
}
|
||||
|
||||
// -p <path>
|
||||
var rootPath = "."
|
||||
if *flPath != "" {
|
||||
rootPath = *flPath
|
||||
}
|
||||
|
||||
// -T <tar file>
|
||||
if *flTar != "" {
|
||||
var input io.Reader
|
||||
if *flTar == "-" {
|
||||
input = os.Stdin
|
||||
} else {
|
||||
fh, err := os.Open(*flTar)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer fh.Close()
|
||||
input = fh
|
||||
}
|
||||
ts := mtree.NewTarStreamer(input, currentKeywords)
|
||||
|
||||
if _, err := io.Copy(ioutil.Discard, ts); err != nil && err != io.EOF {
|
||||
return err
|
||||
}
|
||||
if err := ts.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
var err error
|
||||
stateDh, err = ts.Hierarchy()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
// with a root directory
|
||||
stateDh, err = mtree.Walk(rootPath, nil, currentKeywords)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// -c
|
||||
if *flCreate {
|
||||
fh := os.Stdout
|
||||
if *flFile != "" {
|
||||
fh, err = os.Create(*flFile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// output stateDh
|
||||
stateDh.WriteTo(fh)
|
||||
return nil
|
||||
}
|
||||
|
||||
// This is a validation.
|
||||
if specDh != nil && stateDh != nil {
|
||||
var res []mtree.InodeDelta
|
||||
|
||||
res, err = mtree.Compare(specDh, stateDh, currentKeywords)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if res != nil {
|
||||
if isTarSpec(specDh) || *flTar != "" {
|
||||
res = filterMissingKeywords(res)
|
||||
}
|
||||
if len(res) > 0 {
|
||||
return fmt.Errorf("unexpected missing keywords: %d", len(res))
|
||||
}
|
||||
|
||||
out := formatFunc(res)
|
||||
if _, err := os.Stdout.Write([]byte(out)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
} else {
|
||||
return fmt.Errorf("neither validating or creating a manifest. Please provide additional arguments")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var formats = map[string]func([]mtree.InodeDelta) string{
|
||||
// Outputs the errors in the BSD format.
|
||||
"bsd": func(d []mtree.InodeDelta) string {
|
||||
|
|
@ -146,292 +395,6 @@ func isTarSpec(spec *mtree.DirectoryHierarchy) bool {
|
|||
return false
|
||||
}
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
|
||||
if *flDebug {
|
||||
os.Setenv("DEBUG", "1")
|
||||
}
|
||||
|
||||
// so that defers cleanly exec
|
||||
// TODO: Switch everything to being inside a function, to remove the need for isErr.
|
||||
var isErr bool
|
||||
defer func() {
|
||||
if isErr {
|
||||
os.Exit(1)
|
||||
}
|
||||
}()
|
||||
|
||||
if *flVersion {
|
||||
fmt.Printf("%s :: %s\n", os.Args[0], mtree.Version)
|
||||
return
|
||||
}
|
||||
|
||||
// -list-keywords
|
||||
if *flListKeywords {
|
||||
fmt.Println("Available keywords:")
|
||||
for k := range mtree.KeywordFuncs {
|
||||
fmt.Print(" ")
|
||||
fmt.Print(k)
|
||||
if mtree.Keyword(k).Default() {
|
||||
fmt.Print(" (default)")
|
||||
}
|
||||
if !mtree.Keyword(k).Bsd() {
|
||||
fmt.Print(" (not upstream)")
|
||||
}
|
||||
fmt.Print("\n")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// --result-format
|
||||
formatFunc, ok := formats[*flResultFormat]
|
||||
if !ok {
|
||||
log.Printf("invalid output format: %s", *flResultFormat)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
|
||||
var (
|
||||
err error
|
||||
tmpKeywords []string
|
||||
currentKeywords []string
|
||||
)
|
||||
|
||||
// -k <keywords>
|
||||
if *flUseKeywords != "" {
|
||||
tmpKeywords = splitKeywordsArg(*flUseKeywords)
|
||||
if !inSlice("type", tmpKeywords) {
|
||||
tmpKeywords = append([]string{"type"}, tmpKeywords...)
|
||||
}
|
||||
} else {
|
||||
if *flTar != "" {
|
||||
tmpKeywords = mtree.DefaultTarKeywords[:]
|
||||
} else {
|
||||
tmpKeywords = mtree.DefaultKeywords[:]
|
||||
}
|
||||
}
|
||||
|
||||
// -K <keywords>
|
||||
if *flAddKeywords != "" {
|
||||
for _, kw := range splitKeywordsArg(*flAddKeywords) {
|
||||
if !inSlice(kw, tmpKeywords) {
|
||||
tmpKeywords = append(tmpKeywords, kw)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// -bsd-keywords
|
||||
if *flBsdKeywords {
|
||||
for _, k := range tmpKeywords {
|
||||
if mtree.Keyword(k).Bsd() {
|
||||
currentKeywords = append(currentKeywords, k)
|
||||
} else {
|
||||
fmt.Fprintf(os.Stderr, "INFO: ignoring %q as it is not an upstream keyword\n", k)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
currentKeywords = tmpKeywords
|
||||
}
|
||||
|
||||
// Check mutual exclusivity of keywords.
|
||||
// TODO(cyphar): Abstract this inside keywords.go.
|
||||
if inSlice("tar_time", currentKeywords) && inSlice("time", currentKeywords) {
|
||||
log.Printf("tar_time and time are mutually exclusive keywords")
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
|
||||
// If we're doing a comparison, we always are comparing between a spec and
|
||||
// state DH. If specDh is nil, we are generating a new one.
|
||||
var (
|
||||
specDh *mtree.DirectoryHierarchy
|
||||
stateDh *mtree.DirectoryHierarchy
|
||||
specKeywords []string
|
||||
)
|
||||
|
||||
// -f <file>
|
||||
if *flFile != "" && !*flCreate {
|
||||
// load the hierarchy, if we're not creating a new spec
|
||||
fh, err := os.Open(*flFile)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
specDh, err = mtree.ParseSpec(fh)
|
||||
fh.Close()
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
|
||||
// We can't check against more fields than in the specKeywords list, so
|
||||
// currentKeywords can only have a subset of specKeywords.
|
||||
specKeywords = mtree.CollectUsedKeywords(specDh)
|
||||
}
|
||||
|
||||
// -list-used
|
||||
if *flListUsedKeywords {
|
||||
if specDh == nil {
|
||||
log.Println("no specification provided. please provide a validation manifest")
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
|
||||
if *flResultFormat == "json" {
|
||||
// if they're asking for json, give it to them
|
||||
data := map[string][]string{*flFile: specKeywords}
|
||||
buf, err := json.MarshalIndent(data, "", " ")
|
||||
if err != nil {
|
||||
defer os.Exit(1)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
fmt.Println(string(buf))
|
||||
} else {
|
||||
fmt.Printf("Keywords used in [%s]:\n", *flFile)
|
||||
for _, kw := range specKeywords {
|
||||
fmt.Printf(" %s", kw)
|
||||
if _, ok := mtree.KeywordFuncs[kw]; !ok {
|
||||
fmt.Print(" (unsupported)")
|
||||
}
|
||||
fmt.Printf("\n")
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
if specKeywords != nil {
|
||||
// If we didn't actually change the set of keywords, we can just use specKeywords.
|
||||
if *flUseKeywords == "" && *flAddKeywords == "" {
|
||||
currentKeywords = specKeywords
|
||||
}
|
||||
|
||||
for _, keyword := range currentKeywords {
|
||||
// As always, time is a special case.
|
||||
// TODO: Fix that.
|
||||
if (keyword == "time" && inSlice("tar_time", specKeywords)) || (keyword == "tar_time" && inSlice("time", specKeywords)) {
|
||||
continue
|
||||
}
|
||||
|
||||
if !inSlice(keyword, specKeywords) {
|
||||
log.Printf("cannot verify keywords not in mtree specification: %s\n", keyword)
|
||||
isErr = true
|
||||
}
|
||||
if isErr {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// -p and -T are mutually exclusive
|
||||
if *flPath != "" && *flTar != "" {
|
||||
log.Println("options -T and -p are mutually exclusive")
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
|
||||
// -p <path>
|
||||
var rootPath = "."
|
||||
if *flPath != "" {
|
||||
rootPath = *flPath
|
||||
}
|
||||
|
||||
// -T <tar file>
|
||||
if *flTar != "" {
|
||||
var input io.Reader
|
||||
if *flTar == "-" {
|
||||
input = os.Stdin
|
||||
} else {
|
||||
fh, err := os.Open(*flTar)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
defer fh.Close()
|
||||
input = fh
|
||||
}
|
||||
ts := mtree.NewTarStreamer(input, currentKeywords)
|
||||
|
||||
if _, err := io.Copy(ioutil.Discard, ts); err != nil && err != io.EOF {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
if err := ts.Close(); err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
var err error
|
||||
stateDh, err = ts.Hierarchy()
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
} else {
|
||||
// with a root directory
|
||||
stateDh, err = mtree.Walk(rootPath, nil, currentKeywords)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// -c
|
||||
if *flCreate {
|
||||
fh := os.Stdout
|
||||
if *flFile != "" {
|
||||
fh, err = os.Create(*flFile)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// output stateDh
|
||||
stateDh.WriteTo(fh)
|
||||
return
|
||||
}
|
||||
|
||||
// This is a validation.
|
||||
if specDh != nil && stateDh != nil {
|
||||
var res []mtree.InodeDelta
|
||||
|
||||
res, err = mtree.Compare(specDh, stateDh, currentKeywords)
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
if res != nil {
|
||||
if isTarSpec(specDh) || *flTar != "" {
|
||||
res = filterMissingKeywords(res)
|
||||
}
|
||||
if len(res) > 0 {
|
||||
defer os.Exit(1)
|
||||
}
|
||||
|
||||
out := formatFunc(res)
|
||||
if _, err := os.Stdout.Write([]byte(out)); err != nil {
|
||||
log.Println(err)
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
}
|
||||
} else {
|
||||
log.Println("neither validating or creating a manifest. Please provide additional arguments")
|
||||
isErr = true
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func splitKeywordsArg(str string) []string {
|
||||
return strings.Fields(strings.Replace(str, ",", " ", -1))
|
||||
}
|
||||
|
|
|
|||
|
|
@ -29,7 +29,10 @@ func (dh DirectoryHierarchy) WriteTo(w io.Writer) (n int64, err error) {
|
|||
// CollectUsedKeywords collects and returns all the keywords used in a
|
||||
// a DirectoryHierarchy
|
||||
func CollectUsedKeywords(dh *DirectoryHierarchy) []string {
|
||||
if dh != nil {
|
||||
if dh == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
usedkeywords := []string{}
|
||||
for _, e := range dh.Entries {
|
||||
switch e.Type {
|
||||
|
|
@ -47,5 +50,3 @@ func CollectUsedKeywords(dh *DirectoryHierarchy) []string {
|
|||
}
|
||||
return usedkeywords
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,6 +2,11 @@ package mtree
|
|||
|
||||
import "fmt"
|
||||
|
||||
const (
|
||||
// AppName is the name ... of this library/application
|
||||
AppName = "gomtree"
|
||||
)
|
||||
|
||||
const (
|
||||
// VersionMajor is for an API incompatible changes
|
||||
VersionMajor = 0
|
||||
|
|
|
|||
Loading…
Reference in a new issue