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/htmlnotice/htmlnotice.go b/tools/compliance/cmd/htmlnotice/htmlnotice.go
index 938bb7d..0e3ba09 100644
--- a/tools/compliance/cmd/htmlnotice/htmlnotice.go
+++ b/tools/compliance/cmd/htmlnotice/htmlnotice.go
@@ -35,6 +35,7 @@
 	outputFile  = flag.String("o", "-", "Where to write the NOTICE text file. (default stdout)")
 	depsFile    = flag.String("d", "", "Where to write the deps file")
 	includeTOC  = flag.Bool("toc", true, "Whether to include a table of contents.")
+	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.")
 
@@ -47,6 +48,7 @@
 	stderr      io.Writer
 	rootFS      fs.FS
 	includeTOC  bool
+	product     string
 	stripPrefix []string
 	title       string
 	deps        *[]string
@@ -57,7 +59,7 @@
 		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
@@ -139,7 +141,7 @@
 
 	var deps []string
 
-	ctx := &context{ofile, os.Stderr, os.DirFS("."), *includeTOC, *stripPrefix, *title, &deps}
+	ctx := &context{ofile, os.Stderr, os.DirFS("."), *includeTOC, *product, *stripPrefix, *title, &deps}
 
 	err := htmlNotice(ctx, flag.Args()...)
 	if err != nil {
@@ -204,12 +206,16 @@
 	fmt.Fprintln(ctx.stdout, "</style>")
 	if 0 < len(ctx.title) {
 		fmt.Fprintf(ctx.stdout, "<title>%s</title>\n", html.EscapeString(ctx.title))
+	} else if 0 < len(ctx.product) {
+		fmt.Fprintf(ctx.stdout, "<title>%s</title>\n", html.EscapeString(ctx.product))
 	}
 	fmt.Fprintln(ctx.stdout, "</head>")
 	fmt.Fprintln(ctx.stdout, "<body>")
 
 	if 0 < len(ctx.title) {
 		fmt.Fprintf(ctx.stdout, "  <h1>%s</h1>\n", html.EscapeString(ctx.title))
+	} else if 0 < len(ctx.product) {
+		fmt.Fprintf(ctx.stdout, "  <h1>%s</h1>\n", html.EscapeString(ctx.product))
 	}
 	ids := make(map[string]string)
 	if ctx.includeTOC {
diff --git a/tools/compliance/cmd/htmlnotice/htmlnotice_test.go b/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
index 9863b6d..b8bc47f 100644
--- a/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
+++ b/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
@@ -651,7 +651,7 @@
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.includeTOC, []string{tt.stripPrefix}, tt.title, &deps}
+			ctx := context{stdout, stderr, os.DirFS("."), tt.includeTOC, "", []string{tt.stripPrefix}, tt.title, &deps}
 
 			err := htmlNotice(&ctx, rootFiles...)
 			if err != nil {