Refactor projectmetadata into separate package.
Replace regular expressions to extract fields from a text proto with
and actual parsed protobuf.
Refactor TestFS into its own package, and implement StatFS.
Test: m droid dist cts alllicensemetadata
Test: repo forall -c 'echo -n "$REPO_PATH " && $ANDROID_BUILD_TOP/out/host/linux-x86/bin/compliance_checkmetadata . 2>&1' | fgrep -v PASS
Change-Id: Icd17a6a2b6a4e2b6ffded48e964b9c9d6e4d64d6
diff --git a/tools/compliance/cmd/checkmetadata/checkmetadata.go b/tools/compliance/cmd/checkmetadata/checkmetadata.go
new file mode 100644
index 0000000..c6c84e4
--- /dev/null
+++ b/tools/compliance/cmd/checkmetadata/checkmetadata.go
@@ -0,0 +1,148 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+ "bytes"
+ "flag"
+ "fmt"
+ "io"
+ "io/fs"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "android/soong/response"
+ "android/soong/tools/compliance"
+ "android/soong/tools/compliance/projectmetadata"
+)
+
+var (
+ failNoneRequested = fmt.Errorf("\nNo projects requested")
+)
+
+func main() {
+ var expandedArgs []string
+ for _, arg := range os.Args[1:] {
+ if strings.HasPrefix(arg, "@") {
+ f, err := os.Open(strings.TrimPrefix(arg, "@"))
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+
+ respArgs, err := response.ReadRspFile(f)
+ f.Close()
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err.Error())
+ os.Exit(1)
+ }
+ expandedArgs = append(expandedArgs, respArgs...)
+ } else {
+ expandedArgs = append(expandedArgs, arg)
+ }
+ }
+
+ flags := flag.NewFlagSet("flags", flag.ExitOnError)
+
+ flags.Usage = func() {
+ fmt.Fprintf(os.Stderr, `Usage: %s {-o outfile} projectdir {projectdir...}
+
+Tries to open the METADATA.android or METADATA file in each projectdir
+reporting any errors on stderr.
+
+Reports "FAIL" to stdout if any errors found and exits with status 1.
+
+Otherwise, reports "PASS" and the number of project metadata files
+found exiting with status 0.
+`, filepath.Base(os.Args[0]))
+ flags.PrintDefaults()
+ }
+
+ outputFile := flags.String("o", "-", "Where to write the output. (default stdout)")
+
+ flags.Parse(expandedArgs)
+
+ // Must specify at least one root target.
+ if flags.NArg() == 0 {
+ flags.Usage()
+ os.Exit(2)
+ }
+
+ if len(*outputFile) == 0 {
+ flags.Usage()
+ fmt.Fprintf(os.Stderr, "must specify file for -o; use - for stdout\n")
+ os.Exit(2)
+ } else {
+ dir, err := filepath.Abs(filepath.Dir(*outputFile))
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "cannot determine path to %q: %s\n", *outputFile, err)
+ os.Exit(1)
+ }
+ fi, err := os.Stat(dir)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "cannot read directory %q of %q: %s\n", dir, *outputFile, err)
+ os.Exit(1)
+ }
+ if !fi.IsDir() {
+ fmt.Fprintf(os.Stderr, "parent %q of %q is not a directory\n", dir, *outputFile)
+ os.Exit(1)
+ }
+ }
+
+ var ofile io.Writer
+ ofile = os.Stdout
+ var obuf *bytes.Buffer
+ if *outputFile != "-" {
+ obuf = &bytes.Buffer{}
+ ofile = obuf
+ }
+
+ err := checkProjectMetadata(ofile, os.Stderr, compliance.FS, flags.Args()...)
+ if err != nil {
+ if err == failNoneRequested {
+ flags.Usage()
+ }
+ fmt.Fprintf(os.Stderr, "%s\n", err.Error())
+ fmt.Fprintln(ofile, "FAIL")
+ os.Exit(1)
+ }
+ if *outputFile != "-" {
+ err := os.WriteFile(*outputFile, obuf.Bytes(), 0666)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "could not write output to %q from %q: %s\n", *outputFile, os.Getenv("PWD"), err)
+ os.Exit(1)
+ }
+ }
+ os.Exit(0)
+}
+
+// checkProjectMetadata implements the checkmetadata utility.
+func checkProjectMetadata(stdout, stderr io.Writer, rootFS fs.FS, projects ...string) error {
+
+ if len(projects) < 1 {
+ return failNoneRequested
+ }
+
+ // Read the project metadata files from `projects`
+ ix := projectmetadata.NewIndex(rootFS)
+ pms, err := ix.MetadataForProjects(projects...)
+ if err != nil {
+ return fmt.Errorf("Unable to read project metadata file(s) %q from %q: %w\n", projects, os.Getenv("PWD"), err)
+ }
+
+ fmt.Fprintf(stdout, "PASS -- parsed %d project metadata files for %d projects\n", len(pms), len(projects))
+ return nil
+}