Regularize command-line flags.

All the notice binaries have -title

All the binaries that can -stripPrefix can strip multiple.

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

Test: m all
Test: m systemlicense
Test: m bom; out/soong/host/linux-x85/bom ...
Test: m dumpgraph; out/soong/host/linux-x85/dumpgraph ...
Test: m dumpresolutions; out/soong/host/linux-x85/dumpresolutions ...
Test: m htmlnotice; out/soong/host/linux-x85/htmlnotice ...
Test: m rtrace; out/soong/host/linux-x85/rtrace ...
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: I08357bf1adb048abba6563cf3cea6ee6d60405e0

14 files changed, 299 insertions, 155 deletions

diff --git a/tools/compliance/cmd/bom/bom.go b/tools/compliance/cmd/bom/bom.go
index aaec786da4..5363a59192 100644
--- a/tools/compliance/cmd/bom/bom.go
+++ b/tools/compliance/cmd/bom/bom.go
@@ -29,7 +29,7 @@ import (
 
 var (
 	outputFile  = flag.String("o", "-", "Where to write the bill of materials. (default stdout)")
-	stripPrefix = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	stripPrefix = newMultiString("strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoLicenses    = fmt.Errorf("No licenses found")
@@ -39,7 +39,20 @@ type context struct {
 	stdout      io.Writer
 	stderr      io.Writer
 	rootFS      fs.FS
-	stripPrefix string
+	stripPrefix []string
+}
+
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
 }
 
 func init() {
@@ -54,6 +67,19 @@ Options:
 	}
 }
 
+// newMultiString creates a flag that allows multiple values in an array.
+func newMultiString(name, usage string) *multiString {
+	var f multiString
+	flag.Var(&f, name, usage)
+	return &f
+}
+
+// multiString implements the flag `Value` interface for multiple strings.
+type multiString []string
+
+func (ms *multiString) String() string     { return strings.Join(*ms, ", ") }
+func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil }
+
 func main() {
 	flag.Parse()
 
@@ -135,11 +161,7 @@ func billOfMaterials(ctx *context, files ...string) error {
 	}
 
 	for path := range ni.InstallPaths() {
-		if 0 < len(ctx.stripPrefix) && strings.HasPrefix(path, ctx.stripPrefix) {
-			fmt.Fprintln(ctx.stdout, path[len(ctx.stripPrefix):])
-		} else {
-			fmt.Fprintln(ctx.stdout, path)
-		}
+		fmt.Fprintln(ctx.stdout, ctx.strip(path))
 	}
 	return nil
 }
diff --git a/tools/compliance/cmd/bom/bom_test.go b/tools/compliance/cmd/bom/bom_test.go
index 163ac2aaec..4a9889f3f7 100644
--- a/tools/compliance/cmd/bom/bom_test.go
+++ b/tools/compliance/cmd/bom/bom_test.go
@@ -282,7 +282,7 @@ func Test(t *testing.T) {
 				rootFiles = append(rootFiles, "testdata/"+tt.condition+"/"+r)
 			}
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.stripPrefix}
+			ctx := context{stdout, stderr, os.DirFS("."), []string{tt.stripPrefix}}
 
 			err := billOfMaterials(&ctx, rootFiles...)
 			if err != nil {
diff --git a/tools/compliance/cmd/dumpgraph/dumpgraph.go b/tools/compliance/cmd/dumpgraph/dumpgraph.go
index 02ab0258b6..fa16b1bdf0 100644
--- a/tools/compliance/cmd/dumpgraph/dumpgraph.go
+++ b/tools/compliance/cmd/dumpgraph/dumpgraph.go
@@ -29,7 +29,7 @@ import (
 var (
 	graphViz        = flag.Bool("dot", false, "Whether to output graphviz (i.e. dot) format.")
 	labelConditions = flag.Bool("label_conditions", false, "Whether to label target nodes with conditions.")
-	stripPrefix     = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	stripPrefix     = newMultiString("strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoLicenses    = fmt.Errorf("No licenses found")
@@ -38,7 +38,20 @@ var (
 type context struct {
 	graphViz        bool
 	labelConditions bool
-	stripPrefix     string
+	stripPrefix     []string
+}
+
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
 }
 
 func init() {
@@ -60,6 +73,19 @@ Options:
 	}
 }
 
+// newMultiString creates a flag that allows multiple values in an array.
+func newMultiString(name, usage string) *multiString {
+	var f multiString
+	flag.Var(&f, name, usage)
+	return &f
+}
+
+// multiString implements the flag `Value` interface for multiple strings.
+type multiString []string
+
+func (ms *multiString) String() string     { return strings.Join(*ms, ", ") }
+func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil }
+
 func main() {
 	flag.Parse()
 
@@ -107,7 +133,7 @@ func dumpGraph(ctx *context, stdout, stderr io.Writer, files ...string) error {
 
 	// targetOut calculates the string to output for `target` separating conditions as needed using `sep`.
 	targetOut := func(target *compliance.TargetNode, sep string) string {
-		tOut := strings.TrimPrefix(target.Name(), ctx.stripPrefix)
+		tOut := ctx.strip(target.Name())
 		if ctx.labelConditions {
 			conditions := target.LicenseConditions().Names()
 			sort.Strings(conditions)
diff --git a/tools/compliance/cmd/dumpgraph/dumpgraph_test.go b/tools/compliance/cmd/dumpgraph/dumpgraph_test.go
index 516c1db04f..67b2b40204 100644
--- a/tools/compliance/cmd/dumpgraph/dumpgraph_test.go
+++ b/tools/compliance/cmd/dumpgraph/dumpgraph_test.go
@@ -59,7 +59,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/"},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic static",
 				"bin/bin1.meta_lic lib/libc.a.meta_lic static",
@@ -75,7 +75,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:notice static",
 				"bin/bin1.meta_lic:notice lib/libc.a.meta_lic:notice static",
@@ -146,7 +146,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/"},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic static",
 				"bin/bin1.meta_lic lib/libc.a.meta_lic static",
@@ -162,7 +162,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:notice static",
 				"bin/bin1.meta_lic:notice lib/libc.a.meta_lic:notice static",
@@ -233,7 +233,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/"},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic static",
 				"bin/bin1.meta_lic lib/libc.a.meta_lic static",
@@ -249,7 +249,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:reciprocal static",
 				"bin/bin1.meta_lic:notice lib/libc.a.meta_lic:reciprocal static",
@@ -320,7 +320,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/"},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic static",
 				"bin/bin1.meta_lic lib/libc.a.meta_lic static",
@@ -336,7 +336,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:restricted_allows_dynamic_linking static",
 				"bin/bin1.meta_lic:notice lib/libc.a.meta_lic:reciprocal static",
@@ -407,7 +407,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/"},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic static",
 				"bin/bin1.meta_lic lib/libc.a.meta_lic static",
@@ -423,7 +423,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:by_exception_only:proprietary static",
 				"bin/bin1.meta_lic:notice lib/libc.a.meta_lic:by_exception_only:proprietary static",
@@ -613,7 +613,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/"},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("bin/bin2.meta_lic"),
@@ -636,7 +636,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("bin/bin2.meta_lic", "notice"),
@@ -735,7 +735,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/"},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("bin/bin2.meta_lic"),
@@ -758,7 +758,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("bin/bin2.meta_lic", "notice"),
@@ -857,7 +857,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/"},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("bin/bin2.meta_lic"),
@@ -880,7 +880,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("bin/bin2.meta_lic", "notice"),
@@ -979,7 +979,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/"},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("bin/bin2.meta_lic"),
@@ -1002,7 +1002,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("bin/bin2.meta_lic", "notice"),
@@ -1101,7 +1101,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/"},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("bin/bin2.meta_lic"),
@@ -1124,7 +1124,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("bin/bin2.meta_lic", "by_exception_only", "proprietary"),
diff --git a/tools/compliance/cmd/dumpresolutions/dumpresolutions.go b/tools/compliance/cmd/dumpresolutions/dumpresolutions.go
index 463dfadb65..9c5e972e97 100644
--- a/tools/compliance/cmd/dumpresolutions/dumpresolutions.go
+++ b/tools/compliance/cmd/dumpresolutions/dumpresolutions.go
@@ -30,7 +30,7 @@ var (
 	conditions      = newMultiString("c", "License condition to resolve. (may be given multiple times)")
 	graphViz        = flag.Bool("dot", false, "Whether to output graphviz (i.e. dot) format.")
 	labelConditions = flag.Bool("label_conditions", false, "Whether to label target nodes with conditions.")
-	stripPrefix     = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	stripPrefix     = newMultiString("strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoLicenses    = fmt.Errorf("No licenses found")
@@ -40,7 +40,20 @@ type context struct {
 	conditions      []compliance.LicenseCondition
 	graphViz        bool
 	labelConditions bool
-	stripPrefix     string
+	stripPrefix     []string
+}
+
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
 }
 
 func init() {
@@ -140,7 +153,7 @@ func dumpResolutions(ctx *context, stdout, stderr io.Writer, files ...string) (*
 
 	// targetOut calculates the string to output for `target` adding `sep`-separated conditions as needed.
 	targetOut := func(target *compliance.TargetNode, sep string) string {
-		tOut := strings.TrimPrefix(target.Name(), ctx.stripPrefix)
+		tOut := ctx.strip(target.Name())
 		if ctx.labelConditions {
 			conditions := target.LicenseConditions().Names()
 			if len(conditions) > 0 {
diff --git a/tools/compliance/cmd/dumpresolutions/dumpresolutions_test.go b/tools/compliance/cmd/dumpresolutions/dumpresolutions_test.go
index b7ccdc5f10..6fe1e8ab58 100644
--- a/tools/compliance/cmd/dumpresolutions/dumpresolutions_test.go
+++ b/tools/compliance/cmd/dumpresolutions/dumpresolutions_test.go
@@ -65,7 +65,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/"},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
 				"bin/bin1.meta_lic lib/liba.so.meta_lic notice",
@@ -87,7 +87,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
@@ -110,7 +110,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []string{},
 		},
@@ -120,7 +120,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []string{},
 		},
@@ -130,7 +130,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  append(compliance.ImpliesPrivate.AsList(), compliance.ImpliesShared.AsList()...),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []string{},
 		},
@@ -138,7 +138,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice bin/bin1.meta_lic:notice notice",
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:notice notice",
@@ -223,7 +223,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/"},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
 				"bin/bin1.meta_lic lib/liba.so.meta_lic notice",
@@ -245,7 +245,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
@@ -268,7 +268,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []string{},
 		},
@@ -278,7 +278,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []string{},
 		},
@@ -288,7 +288,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  append(compliance.ImpliesShared.AsList(), compliance.ImpliesPrivate.AsList()...),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []string{},
 		},
@@ -296,7 +296,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice bin/bin1.meta_lic:notice notice",
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:notice notice",
@@ -381,7 +381,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/"},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
 				"bin/bin1.meta_lic lib/liba.so.meta_lic reciprocal",
@@ -403,7 +403,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
@@ -421,7 +421,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic reciprocal",
@@ -437,7 +437,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []string{},
 		},
@@ -447,7 +447,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  append(compliance.ImpliesShared.AsList(), compliance.ImpliesPrivate.AsList()...),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic reciprocal",
@@ -461,7 +461,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice bin/bin1.meta_lic:notice notice",
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:reciprocal reciprocal",
@@ -547,7 +547,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/"},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice:restricted_allows_dynamic_linking",
 				"bin/bin1.meta_lic lib/liba.so.meta_lic restricted_allows_dynamic_linking",
@@ -570,7 +570,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
@@ -586,7 +586,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic restricted_allows_dynamic_linking",
@@ -610,7 +610,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{},
 		},
@@ -620,7 +620,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  append(compliance.ImpliesShared.AsList(), compliance.ImpliesPrivate.AsList()...),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic restricted_allows_dynamic_linking",
@@ -642,7 +642,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice bin/bin1.meta_lic:notice notice:restricted_allows_dynamic_linking",
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:restricted_allows_dynamic_linking restricted_allows_dynamic_linking",
@@ -730,7 +730,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/"},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
 				"bin/bin1.meta_lic lib/liba.so.meta_lic proprietary:by_exception_only",
@@ -753,7 +753,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic bin/bin1.meta_lic notice",
@@ -767,7 +767,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{
 				"bin/bin2.meta_lic bin/bin2.meta_lic restricted",
@@ -784,7 +784,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic proprietary",
@@ -802,7 +802,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  append(compliance.ImpliesShared.AsList(), compliance.ImpliesPrivate.AsList()...),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{
 				"bin/bin1.meta_lic lib/liba.so.meta_lic proprietary",
@@ -822,7 +822,7 @@ func Test_plaintext(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}, labelConditions: true},
 			expectedOut: []string{
 				"bin/bin1.meta_lic:notice bin/bin1.meta_lic:notice notice",
 				"bin/bin1.meta_lic:notice lib/liba.so.meta_lic:proprietary:by_exception_only proprietary:by_exception_only",
@@ -1080,7 +1080,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/"},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("lib/liba.so.meta_lic"),
@@ -1144,7 +1144,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -1209,7 +1209,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1219,7 +1219,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1229,7 +1229,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.Union(compliance.ImpliesPrivate).AsList(),
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1237,7 +1237,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "firstparty",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/firstparty/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/firstparty/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("lib/liba.so.meta_lic", "notice"),
@@ -1472,7 +1472,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/"},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("lib/liba.so.meta_lic"),
@@ -1536,7 +1536,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -1601,7 +1601,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1611,7 +1611,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1621,7 +1621,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.Union(compliance.ImpliesPrivate).AsList(),
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -1629,7 +1629,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "notice",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/notice/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/notice/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("lib/liba.so.meta_lic", "notice"),
@@ -1864,7 +1864,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/"},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("lib/liba.so.meta_lic"),
@@ -1928,7 +1928,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -1971,7 +1971,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2006,7 +2006,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -2016,7 +2016,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.Union(compliance.ImpliesPrivate).AsList(),
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2049,7 +2049,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "reciprocal",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/reciprocal/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/reciprocal/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("lib/liba.so.meta_lic", "reciprocal"),
@@ -2296,7 +2296,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/"},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("lib/liba.so.meta_lic"),
@@ -2372,7 +2372,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2406,7 +2406,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2478,7 +2478,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []getMatcher{},
 		},
@@ -2488,7 +2488,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.Union(compliance.ImpliesPrivate).AsList(),
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2558,7 +2558,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "restricted",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/restricted/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/restricted/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("lib/liba.so.meta_lic", "restricted_allows_dynamic_linking"),
@@ -2836,7 +2836,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/"},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
 				matchTarget("lib/liba.so.meta_lic"),
@@ -2914,7 +2914,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  []compliance.LicenseCondition{compliance.NoticeCondition},
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -2939,7 +2939,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.AsList(),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin2.meta_lic"),
@@ -2977,7 +2977,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesPrivate.AsList(),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -3021,7 +3021,7 @@ func Test_graphviz(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				conditions:  compliance.ImpliesShared.Union(compliance.ImpliesPrivate).AsList(),
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic"),
@@ -3082,7 +3082,7 @@ func Test_graphviz(t *testing.T) {
 			condition: "proprietary",
 			name:      "apex_trimmed_labelled",
 			roots:     []string{"highest.apex.meta_lic"},
-			ctx:       context{stripPrefix: "testdata/proprietary/", labelConditions: true},
+			ctx:       context{stripPrefix: []string{"testdata/proprietary/"}, labelConditions: true},
 			expectedOut: []getMatcher{
 				matchTarget("bin/bin1.meta_lic", "notice"),
 				matchTarget("lib/liba.so.meta_lic", "by_exception_only", "proprietary"),
diff --git a/tools/compliance/cmd/htmlnotice/htmlnotice.go b/tools/compliance/cmd/htmlnotice/htmlnotice.go
index 6363acfc02..938bb7d472 100644
--- a/tools/compliance/cmd/htmlnotice/htmlnotice.go
+++ b/tools/compliance/cmd/htmlnotice/htmlnotice.go
@@ -35,7 +35,7 @@ var (
 	outputFile  = flag.String("o", "-", "Where to write the NOTICE text file. (default stdout)")
 	depsFile    = flag.String("d", "", "Where to write the deps file")
 	includeTOC  = flag.Bool("toc", true, "Whether to include a table of contents.")
-	stripPrefix = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	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.")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
@@ -47,11 +47,27 @@ type context struct {
 	stderr      io.Writer
 	rootFS      fs.FS
 	includeTOC  bool
-	stripPrefix string
+	stripPrefix []string
 	title       string
 	deps        *[]string
 }
 
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				p = ctx.title
+			}
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
+}
+
 func init() {
 	flag.Usage = func() {
 		fmt.Fprintf(os.Stderr, `Usage: %s {options} file.meta_lic {file.meta_lic...}
@@ -65,6 +81,19 @@ Options:
 	}
 }
 
+// newMultiString creates a flag that allows multiple values in an array.
+func newMultiString(name, usage string) *multiString {
+	var f multiString
+	flag.Var(&f, name, usage)
+	return &f
+}
+
+// multiString implements the flag `Value` interface for multiple strings.
+type multiString []string
+
+func (ms *multiString) String() string     { return strings.Join(*ms, ", ") }
+func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil }
+
 func main() {
 	flag.Parse()
 
@@ -190,20 +219,7 @@ func htmlNotice(ctx *context, files ...string) error {
 			id := fmt.Sprintf("id%d", i)
 			i++
 			ids[installPath] = id
-			var p string
-			if 0 < len(ctx.stripPrefix) && strings.HasPrefix(installPath, ctx.stripPrefix) {
-				p = installPath[len(ctx.stripPrefix):]
-				if 0 == len(p) {
-					if 0 < len(ctx.title) {
-						p = ctx.title
-					} else {
-						p = "root"
-					}
-				}
-			} else {
-				p = installPath
-			}
-			fmt.Fprintf(ctx.stdout, "    <li id=\"%s\"><strong>%s</strong>\n      <ul>\n", id, html.EscapeString(p))
+			fmt.Fprintf(ctx.stdout, "    <li id=\"%s\"><strong>%s</strong>\n      <ul>\n", id, html.EscapeString(ctx.strip(installPath)))
 			for _, h := range ni.InstallHashes(installPath) {
 				libs := ni.InstallHashLibs(installPath, h)
 				fmt.Fprintf(ctx.stdout, "        <li><a href=\"#%s\">%s</a>\n", h.String(), html.EscapeString(strings.Join(libs, ", ")))
@@ -218,17 +234,9 @@ func htmlNotice(ctx *context, files ...string) error {
 			fmt.Fprintf(ctx.stdout, "  <strong>%s</strong> used by:\n    <ul class=\"file-list\">\n", html.EscapeString(libName))
 			for _, installPath := range ni.HashLibInstalls(h, libName) {
 				if id, ok := ids[installPath]; ok {
-					if 0 < len(ctx.stripPrefix) && strings.HasPrefix(installPath, ctx.stripPrefix) {
-						fmt.Fprintf(ctx.stdout, "      <li><a href=\"#%s\">%s</a>\n", id, html.EscapeString(installPath[len(ctx.stripPrefix):]))
-					} else {
-						fmt.Fprintf(ctx.stdout, "      <li><a href=\"#%s\">%s</a>\n", id, html.EscapeString(installPath))
-					}
+					fmt.Fprintf(ctx.stdout, "      <li><a href=\"#%s\">%s</a>\n", id, html.EscapeString(ctx.strip(installPath)))
 				} else {
-					if 0 < len(ctx.stripPrefix) && strings.HasPrefix(installPath, ctx.stripPrefix) {
-						fmt.Fprintf(ctx.stdout, "      <li>%s\n", html.EscapeString(installPath[len(ctx.stripPrefix):]))
-					} else {
-						fmt.Fprintf(ctx.stdout, "      <li>%s\n", html.EscapeString(installPath))
-					}
+					fmt.Fprintf(ctx.stdout, "      <li>%s\n", html.EscapeString(ctx.strip(installPath)))
 				}
 			}
 			fmt.Fprintf(ctx.stdout, "    </ul>\n")
diff --git a/tools/compliance/cmd/htmlnotice/htmlnotice_test.go b/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
index 4e9c43c8a4..9863b6df23 100644
--- a/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
+++ b/tools/compliance/cmd/htmlnotice/htmlnotice_test.go
@@ -651,7 +651,7 @@ func Test(t *testing.T) {
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.includeTOC, 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 {
diff --git a/tools/compliance/cmd/rtrace/rtrace.go b/tools/compliance/cmd/rtrace/rtrace.go
index a2ff5941cc..7c63979684 100644
--- a/tools/compliance/cmd/rtrace/rtrace.go
+++ b/tools/compliance/cmd/rtrace/rtrace.go
@@ -28,7 +28,7 @@ import (
 
 var (
 	sources         = newMultiString("rtrace", "Projects or metadata files to trace back from. (required; multiple allowed)")
-	stripPrefix     = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	stripPrefix     = newMultiString("strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoSources     = fmt.Errorf("\nNo projects or metadata files to trace back from")
@@ -37,7 +37,20 @@ var (
 
 type context struct {
 	sources         []string
-	stripPrefix     string
+	stripPrefix     []string
+}
+
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
 }
 
 func init() {
@@ -143,7 +156,7 @@ func traceRestricted(ctx *context, stdout, stderr io.Writer, files ...string) (*
 
 	// targetOut calculates the string to output for `target` adding `sep`-separated conditions as needed.
 	targetOut := func(target *compliance.TargetNode, sep string) string {
-		tOut := strings.TrimPrefix(target.Name(), ctx.stripPrefix)
+		tOut := ctx.strip(target.Name())
 		return tOut
 	}
 
diff --git a/tools/compliance/cmd/rtrace/rtrace_test.go b/tools/compliance/cmd/rtrace/rtrace_test.go
index 658aa965ea..a8eb8841c0 100644
--- a/tools/compliance/cmd/rtrace/rtrace_test.go
+++ b/tools/compliance/cmd/rtrace/rtrace_test.go
@@ -52,7 +52,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/firstparty/bin/bin1.meta_lic"},
-				stripPrefix: "testdata/firstparty/",
+				stripPrefix: []string{"testdata/firstparty/"},
 			},
 			expectedOut: []string{},
 		},
@@ -92,7 +92,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/notice/bin/bin1.meta_lic"},
-				stripPrefix: "testdata/notice/",
+				stripPrefix: []string{"testdata/notice/"},
 			},
 			expectedOut: []string{},
 		},
@@ -132,7 +132,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/reciprocal/bin/bin1.meta_lic"},
-				stripPrefix: "testdata/reciprocal/",
+				stripPrefix: []string{"testdata/reciprocal/"},
 			},
 			expectedOut: []string{},
 		},
@@ -175,7 +175,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/restricted/bin/bin1.meta_lic"},
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{"lib/liba.so.meta_lic restricted_allows_dynamic_linking"},
 		},
@@ -185,7 +185,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/restricted/bin/bin2.meta_lic"},
-				stripPrefix: "testdata/restricted/",
+				stripPrefix: []string{"testdata/restricted/"},
 			},
 			expectedOut: []string{"lib/libb.so.meta_lic restricted"},
 		},
@@ -228,7 +228,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/proprietary/bin/bin1.meta_lic"},
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{},
 		},
@@ -238,7 +238,7 @@ func Test_plaintext(t *testing.T) {
 			roots:     []string{"highest.apex.meta_lic"},
 			ctx: context{
 				sources:     []string{"testdata/proprietary/bin/bin2.meta_lic"},
-				stripPrefix: "testdata/proprietary/",
+				stripPrefix: []string{"testdata/proprietary/"},
 			},
 			expectedOut: []string{"lib/libb.so.meta_lic restricted"},
 		},
diff --git a/tools/compliance/cmd/textnotice/textnotice.go b/tools/compliance/cmd/textnotice/textnotice.go
index eebb13de3f..35c5c24d60 100644
--- a/tools/compliance/cmd/textnotice/textnotice.go
+++ b/tools/compliance/cmd/textnotice/textnotice.go
@@ -16,6 +16,7 @@ package main
 
 import (
 	"bytes"
+	"compress/gzip"
 	"flag"
 	"fmt"
 	"io"
@@ -32,7 +33,8 @@ import (
 var (
 	outputFile  = flag.String("o", "-", "Where to write the NOTICE text file. (default stdout)")
 	depsFile    = flag.String("d", "", "Where to write the deps file")
-	stripPrefix = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	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.")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoLicenses    = fmt.Errorf("No licenses found")
@@ -42,10 +44,27 @@ type context struct {
 	stdout      io.Writer
 	stderr      io.Writer
 	rootFS      fs.FS
-	stripPrefix string
+	stripPrefix []string
+	title       string
 	deps        *[]string
 }
 
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				p = ctx.title
+			}
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
+}
+
 func init() {
 	flag.Usage = func() {
 		fmt.Fprintf(os.Stderr, `Usage: %s {options} file.meta_lic {file.meta_lic...}
@@ -58,6 +77,19 @@ Options:
 	}
 }
 
+// newMultiString creates a flag that allows multiple values in an array.
+func newMultiString(name, usage string) *multiString {
+	var f multiString
+	flag.Var(&f, name, usage)
+	return &f
+}
+
+// multiString implements the flag `Value` interface for multiple strings.
+type multiString []string
+
+func (ms *multiString) String() string     { return strings.Join(*ms, ", ") }
+func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil }
+
 func main() {
 	flag.Parse()
 
@@ -89,14 +121,21 @@ func main() {
 	}
 
 	var ofile io.Writer
+	var closer io.Closer
 	ofile = os.Stdout
+	var obuf *bytes.Buffer
 	if *outputFile != "-" {
-		ofile = &bytes.Buffer{}
+		obuf = &bytes.Buffer{}
+		ofile = obuf
+	}
+	if strings.HasSuffix(*outputFile, ".gz") {
+		ofile, _ = gzip.NewWriterLevel(obuf, gzip.BestCompression)
+		closer = ofile.(io.Closer)
 	}
 
 	var deps []string
 
-	ctx := &context{ofile, os.Stderr, os.DirFS("."), *stripPrefix, &deps}
+	ctx := &context{ofile, os.Stderr, os.DirFS("."), *stripPrefix, *title, &deps}
 
 	err := textNotice(ctx, flag.Args()...)
 	if err != nil {
@@ -106,8 +145,12 @@ func main() {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
 		os.Exit(1)
 	}
+	if closer != nil {
+		closer.Close()
+	}
+
 	if *outputFile != "-" {
-		err := os.WriteFile(*outputFile, ofile.(*bytes.Buffer).Bytes(), 0666)
+		err := os.WriteFile(*outputFile, obuf.Bytes(), 0666)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "could not write output to %q: %s\n", *outputFile, err)
 			os.Exit(1)
@@ -152,11 +195,7 @@ func textNotice(ctx *context, files ...string) error {
 		for _, libName := range ni.HashLibs(h) {
 			fmt.Fprintf(ctx.stdout, "%s used by:\n", libName)
 			for _, installPath := range ni.HashLibInstalls(h, libName) {
-				if 0 < len(ctx.stripPrefix) && strings.HasPrefix(installPath, ctx.stripPrefix) {
-					fmt.Fprintf(ctx.stdout, "  %s\n", installPath[len(ctx.stripPrefix):])
-				} else {
-					fmt.Fprintf(ctx.stdout, "  %s\n", installPath)
-				}
+				fmt.Fprintf(ctx.stdout, "  %s\n", ctx.strip(installPath))
 			}
 			fmt.Fprintln(ctx.stdout)
 		}
diff --git a/tools/compliance/cmd/textnotice/textnotice_test.go b/tools/compliance/cmd/textnotice/textnotice_test.go
index 39f711dffd..0ed3394a18 100644
--- a/tools/compliance/cmd/textnotice/textnotice_test.go
+++ b/tools/compliance/cmd/textnotice/textnotice_test.go
@@ -564,7 +564,7 @@ func Test(t *testing.T) {
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.stripPrefix, &deps}
+			ctx := context{stdout, stderr, os.DirFS("."), []string{tt.stripPrefix}, "", &deps}
 
 			err := textNotice(&ctx, rootFiles...)
 			if err != nil {
diff --git a/tools/compliance/cmd/xmlnotice/xmlnotice.go b/tools/compliance/cmd/xmlnotice/xmlnotice.go
index 858e7585ce..eb169f361f 100644
--- a/tools/compliance/cmd/xmlnotice/xmlnotice.go
+++ b/tools/compliance/cmd/xmlnotice/xmlnotice.go
@@ -34,7 +34,8 @@ import (
 var (
 	outputFile  = flag.String("o", "-", "Where to write the NOTICE xml or xml.gz file. (default stdout)")
 	depsFile    = flag.String("d", "", "Where to write the deps file")
-	stripPrefix = flag.String("strip_prefix", "", "Prefix to remove from paths. i.e. path to root")
+	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.")
 
 	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
 	failNoLicenses    = fmt.Errorf("No licenses found")
@@ -44,10 +45,27 @@ type context struct {
 	stdout      io.Writer
 	stderr      io.Writer
 	rootFS      fs.FS
-	stripPrefix string
+	stripPrefix []string
+	title       string
 	deps        *[]string
 }
 
+func (ctx context) strip(installPath string) string {
+	for _, prefix := range ctx.stripPrefix {
+		if strings.HasPrefix(installPath, prefix) {
+			p := strings.TrimPrefix(installPath, prefix)
+			if 0 == len(p) {
+				p = ctx.title
+			}
+			if 0 == len(p) {
+				continue
+			}
+			return p
+		}
+	}
+	return installPath
+}
+
 func init() {
 	flag.Usage = func() {
 		fmt.Fprintf(os.Stderr, `Usage: %s {options} file.meta_lic {file.meta_lic...}
@@ -61,6 +79,19 @@ Options:
 	}
 }
 
+// newMultiString creates a flag that allows multiple values in an array.
+func newMultiString(name, usage string) *multiString {
+	var f multiString
+	flag.Var(&f, name, usage)
+	return &f
+}
+
+// multiString implements the flag `Value` interface for multiple strings.
+type multiString []string
+
+func (ms *multiString) String() string     { return strings.Join(*ms, ", ") }
+func (ms *multiString) Set(s string) error { *ms = append(*ms, s); return nil }
+
 func main() {
 	flag.Parse()
 
@@ -106,7 +137,7 @@ func main() {
 
 	var deps []string
 
-	ctx := &context{ofile, os.Stderr, os.DirFS("."), *stripPrefix, &deps}
+	ctx := &context{ofile, os.Stderr, os.DirFS("."), *stripPrefix, *title, &deps}
 
 	err := xmlNotice(ctx, flag.Args()...)
 	if err != nil {
@@ -165,15 +196,7 @@ func xmlNotice(ctx *context, files ...string) error {
 	fmt.Fprintln(ctx.stdout, "<licenses>")
 
 	for installPath := range ni.InstallPaths() {
-		var p string
-		if 0 < len(ctx.stripPrefix) && strings.HasPrefix(installPath, ctx.stripPrefix) {
-			p = installPath[len(ctx.stripPrefix):]
-			if 0 == len(p) {
-				p = "root"
-			}
-		} else {
-			p = installPath
-		}
+		p := ctx.strip(installPath)
 		for _, h := range ni.InstallHashes(installPath) {
 			for _, lib := range ni.InstallHashLibs(installPath, h) {
 				fmt.Fprintf(ctx.stdout, "<file-name contentId=\"%s\" lib=\"", h.String())
diff --git a/tools/compliance/cmd/xmlnotice/xmlnotice_test.go b/tools/compliance/cmd/xmlnotice/xmlnotice_test.go
index 55689d4aec..3a62438a64 100644
--- a/tools/compliance/cmd/xmlnotice/xmlnotice_test.go
+++ b/tools/compliance/cmd/xmlnotice/xmlnotice_test.go
@@ -459,7 +459,7 @@ func Test(t *testing.T) {
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.stripPrefix, &deps}
+			ctx := context{stdout, stderr, os.DirFS("."), []string{tt.stripPrefix}, "", &deps}
 
 			err := xmlNotice(&ctx, rootFiles...)
 			if err != nil {