843517f136
When adding keywords with -K, we don't want to duplicate keywords in the keywords slice. Signed-off-by: Stephen Chung <schung@redhat.com>
250 lines
5.4 KiB
Go
250 lines
5.4 KiB
Go
package main
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import (
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"bytes"
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"strings"
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"github.com/vbatts/go-mtree"
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)
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var (
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flCreate = flag.Bool("c", false, "create a directory hierarchy spec")
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flFile = flag.String("f", "", "directory hierarchy spec to validate")
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flPath = flag.String("p", "", "root path that the hierarchy spec is relative to")
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flAddKeywords = flag.String("K", "", "Add the specified (delimited by comma or space) keywords to the current set of keywords")
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flUseKeywords = flag.String("k", "", "Use the specified (delimited by comma or space) keywords as the current set of keywords")
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flListKeywords = flag.Bool("list-keywords", false, "List the keywords available")
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flResultFormat = flag.String("result-format", "bsd", "output the validation results using the given format (bsd, json, path)")
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flTar = flag.String("T", "", "use tar archive to create or validate a directory hierarchy spec")
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)
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var formats = map[string]func(*mtree.Result) string{
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// Outputs the errors in the BSD format.
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"bsd": func(r *mtree.Result) string {
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var buffer bytes.Buffer
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for _, fail := range r.Failures {
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fmt.Fprintln(&buffer, fail)
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}
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return buffer.String()
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},
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// Outputs the full result struct in JSON.
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"json": func(r *mtree.Result) string {
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var buffer bytes.Buffer
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if err := json.NewEncoder(&buffer).Encode(r); err != nil {
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panic(err)
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}
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return buffer.String()
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},
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// Outputs only the paths which failed to validate.
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"path": func(r *mtree.Result) string {
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var buffer bytes.Buffer
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for _, fail := range r.Failures {
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fmt.Fprintln(&buffer, fail.Path)
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}
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return buffer.String()
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},
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}
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func main() {
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flag.Parse()
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// so that defers cleanly exec
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var isErr bool
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defer func() {
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if isErr {
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os.Exit(1)
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}
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}()
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// -l
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if *flListKeywords {
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fmt.Println("Available keywords:")
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for k := range mtree.KeywordFuncs {
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if inSlice(k, mtree.DefaultKeywords) {
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fmt.Println(" ", k, " (default)")
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} else {
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fmt.Println(" ", k)
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}
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}
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return
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}
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// --output
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formatFunc, ok := formats[*flResultFormat]
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if !ok {
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log.Printf("invalid output format: %s", *flResultFormat)
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isErr = true
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return
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}
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var currentKeywords []string
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// -k <keywords>
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if *flUseKeywords != "" {
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currentKeywords = splitKeywordsArg(*flUseKeywords)
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if !inSlice("type", currentKeywords) {
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currentKeywords = append([]string{"type"}, currentKeywords...)
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}
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} else {
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if *flTar != "" {
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currentKeywords = mtree.DefaultTarKeywords[:]
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} else {
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currentKeywords = mtree.DefaultKeywords[:]
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}
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}
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// -K <keywords>
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if *flAddKeywords != "" {
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for _, kw := range splitKeywordsArg(*flAddKeywords) {
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if !inSlice(kw, currentKeywords) {
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currentKeywords = append(currentKeywords, kw)
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}
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}
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}
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// -f <file>
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var dh *mtree.DirectoryHierarchy
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if *flFile != "" && !*flCreate {
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// load the hierarchy, if we're not creating a new spec
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fh, err := os.Open(*flFile)
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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dh, err = mtree.ParseSpec(fh)
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fh.Close()
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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}
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// -p <path>
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var rootPath = "."
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if *flPath != "" {
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rootPath = *flPath
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}
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// -T <tar file>
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var tdh *mtree.DirectoryHierarchy
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if *flTar != "" {
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fh, err := os.Open(*flTar)
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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ts := mtree.NewTarStreamer(fh, currentKeywords)
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if _, err := io.Copy(ioutil.Discard, ts); err != nil && err != io.EOF {
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log.Println(err)
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isErr = true
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return
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}
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if err := ts.Close(); err != nil {
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log.Println(err)
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isErr = true
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return
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}
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defer fh.Close()
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tdh, err = ts.Hierarchy()
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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}
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// -c
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if *flCreate {
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// create a directory hierarchy
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// with a tar stream
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if tdh != nil {
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tdh.WriteTo(os.Stdout)
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} else {
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// with a root directory
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dh, err := mtree.Walk(rootPath, nil, currentKeywords)
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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dh.WriteTo(os.Stdout)
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}
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} else if tdh != nil || dh != nil {
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var res *mtree.Result
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var err error
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// else this is a validation
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if *flTar != "" {
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res, err = mtree.TarCheck(tdh, dh, currentKeywords)
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} else {
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res, err = mtree.Check(rootPath, dh, currentKeywords)
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}
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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if res != nil && len(res.Failures) > 0 {
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defer os.Exit(1)
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out := formatFunc(res)
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if _, err := os.Stdout.Write([]byte(out)); err != nil {
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log.Println(err)
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isErr = true
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return
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}
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}
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if res != nil {
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if len(res.Extra) > 0 {
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defer os.Exit(1)
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for _, extra := range res.Extra {
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extrapath, err := extra.Path()
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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fmt.Printf("%s extra\n", extrapath)
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}
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}
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if len(res.Missing) > 0 {
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defer os.Exit(1)
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for _, missing := range res.Missing {
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missingpath, err := missing.Path()
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if err != nil {
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log.Println(err)
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isErr = true
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return
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}
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fmt.Printf("%s missing\n", missingpath)
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}
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}
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} else {
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log.Println("neither validating or creating a manifest. Please provide additional arguments")
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isErr = true
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defer os.Exit(1)
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return
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}
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}
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}
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func splitKeywordsArg(str string) []string {
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return strings.Fields(strings.Replace(str, ",", " ", -1))
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}
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func inSlice(a string, list []string) bool {
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for _, b := range list {
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if b == a {
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return true
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}
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}
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return false
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}
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