Add support for a product name as well as title.

Bug: 68860345
Bug: 151177513
Bug: 151953481
Bug: 213388645
Bug: 210912771

Test: m all
Test: m systemlicense
Test: m htmlnotice; out/soong/host/linux-x85/htmlnotice ...
Test: m textnotice; out/soong/host/linux-x85/textnotice ...
Test: m xmlnotice; out/soong/host/linux-x85/xmlnotice ...

where ... is the path to the .meta_lic file for the system image. In my
case if

$ export PRODUCT=$(realpath $ANDROID_PRODUCT_OUT --relative-to=$PWD)

... can be expressed as:

${PRODUCT}/gen/META/lic_intermediates/${PRODUCT}/system.img.meta_lic

Change-Id: Id5b2ebe3752081e3a89bba1d717cf103f7846043
diff --git a/tools/compliance/cmd/textnotice/textnotice.go b/tools/compliance/cmd/textnotice/textnotice.go
index 35c5c24..9e9229f 100644
--- a/tools/compliance/cmd/textnotice/textnotice.go
+++ b/tools/compliance/cmd/textnotice/textnotice.go
@@ -33,6 +33,7 @@
 var (
 	outputFile  = flag.String("o", "-", "Where to write the NOTICE text file. (default stdout)")
 	depsFile    = flag.String("d", "", "Where to write the deps file")
+	product     = flag.String("product", "", "The name of the product for which the notice is generated.")
 	stripPrefix = newMultiString("strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
 	title       = flag.String("title", "", "The title of the notice file.")
 
@@ -44,6 +45,7 @@
 	stdout      io.Writer
 	stderr      io.Writer
 	rootFS      fs.FS
+	product     string
 	stripPrefix []string
 	title       string
 	deps        *[]string
@@ -54,7 +56,7 @@
 		if strings.HasPrefix(installPath, prefix) {
 			p := strings.TrimPrefix(installPath, prefix)
 			if 0 == len(p) {
-				p = ctx.title
+				p = ctx.product
 			}
 			if 0 == len(p) {
 				continue
@@ -135,7 +137,7 @@
 
 	var deps []string
 
-	ctx := &context{ofile, os.Stderr, os.DirFS("."), *stripPrefix, *title, &deps}
+	ctx := &context{ofile, os.Stderr, os.DirFS("."), *product, *stripPrefix, *title, &deps}
 
 	err := textNotice(ctx, flag.Args()...)
 	if err != nil {
@@ -190,6 +192,9 @@
 		return fmt.Errorf("Unable to read license text file(s) for %q: %v\n", files, err)
 	}
 
+	if 0 < len(ctx.title) {
+		fmt.Fprintf(ctx.stdout, "%s\n\n", ctx.title)
+	}
 	for h := range ni.Hashes() {
 		fmt.Fprintln(ctx.stdout, "==============================================================================")
 		for _, libName := range ni.HashLibs(h) {
diff --git a/tools/compliance/cmd/textnotice/textnotice_test.go b/tools/compliance/cmd/textnotice/textnotice_test.go
index 0ed3394..9d8d0ca 100644
--- a/tools/compliance/cmd/textnotice/textnotice_test.go
+++ b/tools/compliance/cmd/textnotice/textnotice_test.go
@@ -564,7 +564,7 @@
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), []string{tt.stripPrefix}, "", &deps}
+			ctx := context{stdout, stderr, os.DirFS("."), "", []string{tt.stripPrefix}, "", &deps}
 
 			err := textNotice(&ctx, rootFiles...)
 			if err != nil {