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hierarchy: provide option to list the used keywords in a spec 

To increase a user's control on how they validate a directory or
tar archive with a specification, it is helpful to know which
keywords are actually used in the spec provided. This way, the user
can see what keywords to use or not use with the '-k' or '-K' flags.

Signed-off-by: Stephen Chung <schung@redhat.com>
This commit is contained in:
Stephen Chung 2016-07-29 10:18:17 -04:00
parent aa6d7c2c6e
commit 5372b5fc47
2 changed files with 54 additions and 11 deletions
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41
cmd/gomtree/main.go
View File

@ -15,17 +15,17 @@ import (
)
var (
flCreate = flag.Bool("c", false, "create a directory hierarchy spec")
flFile = flag.String("f", "", "directory hierarchy spec to validate")
flPath = flag.String("p", "", "root path that the hierarchy spec is relative to")
flAddKeywords = flag.String("K", "", "Add the specified (delimited by comma or space) keywords to the current set of keywords")
flUseKeywords = flag.String("k", "", "Use the specified (delimited by comma or space) keywords as the current set of keywords")
flListKeywords = flag.Bool("list-keywords", false, "List the keywords available")
flResultFormat = flag.String("result-format", "bsd", "output the validation results using the given format (bsd, json, path)")
flTar = flag.String("T", "", "use tar archive to create or validate a directory hierarchy spec")
flBsdKeywords = flag.Bool("bsd-keywords", false, "only operate on keywords that are supported by upstream mtree(8)")
flDebug = flag.Bool("debug", false, "output debug info to STDERR")
flCreate = flag.Bool("c", false, "create a directory hierarchy spec")
flFile = flag.String("f", "", "directory hierarchy spec to validate")
flPath = flag.String("p", "", "root path that the hierarchy spec is relative to")
flAddKeywords = flag.String("K", "", "Add the specified (delimited by comma or space) keywords to the current set of keywords")
flUseKeywords = flag.String("k", "", "Use the specified (delimited by comma or space) keywords as the current set of keywords")
flListKeywords = flag.Bool("list-keywords", false, "List the keywords available")
flResultFormat = flag.String("result-format", "bsd", "output the validation results using the given format (bsd, json, path)")
flTar = flag.String("T", "", "use tar archive to create or validate a directory hierarchy spec")
flBsdKeywords = flag.Bool("bsd-keywords", false, "only operate on keywords that are supported by upstream mtree(8)")
flListUsedKeywords = flag.Bool("list-used", false, "list all the keywords found in a validation manifest")
flDebug = flag.Bool("debug", false, "output debug info to STDERR")
)
var formats = map[string]func(*mtree.Result) string{
@ -156,6 +156,25 @@ func main() {
}
}
// -list-used
if *flListUsedKeywords {
if *flFile == "" {
log.Println("no specification provided. please provide a validation manifest")
defer os.Exit(1)
isErr = true
return
}
fmt.Printf("Keywords used in [%s]:\n", *flFile)
for _, kw := range mtree.CollectUsedKeywords(dh) {
fmt.Printf(" %s", kw)
if _, ok := mtree.KeywordFuncs[kw]; !ok {
fmt.Print(" (unsupported)")
}
fmt.Printf("\n")
}
return
}
// -p <path>
var rootPath = "."
if *flPath != "" {

24
hierarchy.go
View File

@ -25,3 +25,27 @@ func (dh DirectoryHierarchy) WriteTo(w io.Writer) (n int64, err error) {
}
return sum, nil
}
// CollectUsedKeywords collects and returns all the keywords used in a
// a DirectoryHierarchy
func CollectUsedKeywords(dh *DirectoryHierarchy) []string {
if dh != nil {
usedkeywords := []string{}
for _, e := range dh.Entries {
switch e.Type {
case FullType, RelativeType, SpecialType:
if e.Type != SpecialType || e.Name == "/set" {
kvs := e.Keywords
for _, kv := range kvs {
kw := KeyVal(kv).Keyword()
if !inSlice(kw, usedkeywords) {
usedkeywords = append(usedkeywords, kw)
}
}
}
}
}
return usedkeywords
}
return nil
}