Remove unused compliance_bom tool

Bug: 395941388
Test: presubmits
Change-Id: I6af0b276f29998499a02e80f2ff53b7943bf2218
diff --git a/tools/compliance/Android.bp b/tools/compliance/Android.bp
index 2527df7..33f515b 100644
--- a/tools/compliance/Android.bp
+++ b/tools/compliance/Android.bp
@@ -39,16 +39,6 @@
 }
 
 blueprint_go_binary {
-    name: "compliancenotice_bom",
-    srcs: ["cmd/bom/bom.go"],
-    deps: [
-        "compliance-module",
-        "soong-response",
-    ],
-    testSrcs: ["cmd/bom/bom_test.go"],
-}
-
-blueprint_go_binary {
     name: "compliancenotice_shippedlibs",
     srcs: ["cmd/shippedlibs/shippedlibs.go"],
     deps: [
diff --git a/tools/compliance/cmd/bom/bom.go b/tools/compliance/cmd/bom/bom.go
deleted file mode 100644
index 187f828..0000000
--- a/tools/compliance/cmd/bom/bom.go
+++ /dev/null
@@ -1,189 +0,0 @@
-// Copyright 2021 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"
-)
-
-var (
-	failNoneRequested = fmt.Errorf("\nNo license metadata files requested")
-	failNoLicenses    = fmt.Errorf("No licenses found")
-)
-
-type context struct {
-	stdout      io.Writer
-	stderr      io.Writer
-	rootFS      fs.FS
-	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
-}
-
-// newMultiString creates a flag that allows multiple values in an array.
-func newMultiString(flags *flag.FlagSet, name, usage string) *multiString {
-	var f multiString
-	flags.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() {
-	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 {options} file.meta_lic {file.meta_lic...}
-
-Outputs a bill of materials. i.e. the list of installed paths.
-
-Options:
-`, filepath.Base(os.Args[0]))
-		flags.PrintDefaults()
-	}
-
-	outputFile := flags.String("o", "-", "Where to write the bill of materials. (default stdout)")
-	stripPrefix := newMultiString(flags, "strip_prefix", "Prefix to remove from paths. i.e. path to root (multiple allowed)")
-
-	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
-	if *outputFile != "-" {
-		ofile = &bytes.Buffer{}
-	}
-
-	ctx := &context{ofile, os.Stderr, compliance.FS, *stripPrefix}
-
-	err := billOfMaterials(ctx, flags.Args()...)
-	if err != nil {
-		if err == failNoneRequested {
-			flags.Usage()
-		}
-		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
-		os.Exit(1)
-	}
-	if *outputFile != "-" {
-		err := os.WriteFile(*outputFile, ofile.(*bytes.Buffer).Bytes(), 0666)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "could not write output to %q: %s\n", *outputFile, err)
-			os.Exit(1)
-		}
-	}
-	os.Exit(0)
-}
-
-// billOfMaterials implements the bom utility.
-func billOfMaterials(ctx *context, files ...string) error {
-	// Must be at least one root file.
-	if len(files) < 1 {
-		return failNoneRequested
-	}
-
-	// Read the license graph from the license metadata files (*.meta_lic).
-	licenseGraph, err := compliance.ReadLicenseGraph(ctx.rootFS, ctx.stderr, files)
-	if err != nil {
-		return fmt.Errorf("Unable to read license metadata file(s) %q: %v\n", files, err)
-	}
-	if licenseGraph == nil {
-		return failNoLicenses
-	}
-
-	// rs contains all notice resolutions.
-	rs := compliance.ResolveNotices(licenseGraph)
-
-	ni, err := compliance.IndexLicenseTexts(ctx.rootFS, licenseGraph, rs)
-	if err != nil {
-		return fmt.Errorf("Unable to read license text file(s) for %q: %v\n", files, err)
-	}
-
-	for path := range ni.InstallPaths() {
-		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
deleted file mode 100644
index 87a3b50..0000000
--- a/tools/compliance/cmd/bom/bom_test.go
+++ /dev/null
@@ -1,322 +0,0 @@
-// Copyright 2021 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 (
-	"bufio"
-	"bytes"
-	"fmt"
-	"os"
-	"strings"
-	"testing"
-
-	"android/soong/tools/compliance"
-)
-
-func TestMain(m *testing.M) {
-	// Change into the parent directory before running the tests
-	// so they can find the testdata directory.
-	if err := os.Chdir(".."); err != nil {
-		fmt.Printf("failed to change to testdata directory: %s\n", err)
-		os.Exit(1)
-	}
-	os.Exit(m.Run())
-}
-
-func Test(t *testing.T) {
-	tests := []struct {
-		condition   string
-		name        string
-		outDir      string
-		roots       []string
-		stripPrefix string
-		expectedOut []string
-	}{
-		{
-			condition:   "firstparty",
-			name:        "apex",
-			roots:       []string{"highest.apex.meta_lic"},
-			stripPrefix: "out/target/product/fictional",
-			expectedOut: []string{
-				"/system/apex/highest.apex",
-				"/system/apex/highest.apex/bin/bin1",
-				"/system/apex/highest.apex/bin/bin2",
-				"/system/apex/highest.apex/lib/liba.so",
-				"/system/apex/highest.apex/lib/libb.so",
-			},
-		},
-		{
-			condition:   "firstparty",
-			name:        "container",
-			roots:       []string{"container.zip.meta_lic"},
-			stripPrefix: "out/target/product/fictional/data/",
-			expectedOut: []string{
-				"container.zip",
-				"container.zip/bin1",
-				"container.zip/bin2",
-				"container.zip/liba.so",
-				"container.zip/libb.so",
-			},
-		},
-		{
-			condition:   "firstparty",
-			name:        "application",
-			roots:       []string{"application.meta_lic"},
-			stripPrefix: "out/target/product/fictional/bin/",
-			expectedOut: []string{"application"},
-		},
-		{
-			condition:   "firstparty",
-			name:        "binary",
-			roots:       []string{"bin/bin1.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"bin/bin1"},
-		},
-		{
-			condition:   "firstparty",
-			name:        "library",
-			roots:       []string{"lib/libd.so.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"lib/libd.so"},
-		},
-		{
-			condition: "notice",
-			name:      "apex",
-			roots:     []string{"highest.apex.meta_lic"},
-			expectedOut: []string{
-				"out/target/product/fictional/system/apex/highest.apex",
-				"out/target/product/fictional/system/apex/highest.apex/bin/bin1",
-				"out/target/product/fictional/system/apex/highest.apex/bin/bin2",
-				"out/target/product/fictional/system/apex/highest.apex/lib/liba.so",
-				"out/target/product/fictional/system/apex/highest.apex/lib/libb.so",
-			},
-		},
-		{
-			condition: "notice",
-			name:      "container",
-			roots:     []string{"container.zip.meta_lic"},
-			expectedOut: []string{
-				"out/target/product/fictional/data/container.zip",
-				"out/target/product/fictional/data/container.zip/bin1",
-				"out/target/product/fictional/data/container.zip/bin2",
-				"out/target/product/fictional/data/container.zip/liba.so",
-				"out/target/product/fictional/data/container.zip/libb.so",
-			},
-		},
-		{
-			condition:   "notice",
-			name:        "application",
-			roots:       []string{"application.meta_lic"},
-			expectedOut: []string{"out/target/product/fictional/bin/application"},
-		},
-		{
-			condition:   "notice",
-			name:        "binary",
-			roots:       []string{"bin/bin1.meta_lic"},
-			expectedOut: []string{"out/target/product/fictional/system/bin/bin1"},
-		},
-		{
-			condition:   "notice",
-			name:        "library",
-			roots:       []string{"lib/libd.so.meta_lic"},
-			expectedOut: []string{"out/target/product/fictional/system/lib/libd.so"},
-		},
-		{
-			condition:   "reciprocal",
-			name:        "apex",
-			roots:       []string{"highest.apex.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/apex/",
-			expectedOut: []string{
-				"highest.apex",
-				"highest.apex/bin/bin1",
-				"highest.apex/bin/bin2",
-				"highest.apex/lib/liba.so",
-				"highest.apex/lib/libb.so",
-			},
-		},
-		{
-			condition:   "reciprocal",
-			name:        "container",
-			roots:       []string{"container.zip.meta_lic"},
-			stripPrefix: "out/target/product/fictional/data/",
-			expectedOut: []string{
-				"container.zip",
-				"container.zip/bin1",
-				"container.zip/bin2",
-				"container.zip/liba.so",
-				"container.zip/libb.so",
-			},
-		},
-		{
-			condition:   "reciprocal",
-			name:        "application",
-			roots:       []string{"application.meta_lic"},
-			stripPrefix: "out/target/product/fictional/bin/",
-			expectedOut: []string{"application"},
-		},
-		{
-			condition:   "reciprocal",
-			name:        "binary",
-			roots:       []string{"bin/bin1.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"bin/bin1"},
-		},
-		{
-			condition:   "reciprocal",
-			name:        "library",
-			roots:       []string{"lib/libd.so.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"lib/libd.so"},
-		},
-		{
-			condition:   "restricted",
-			name:        "apex",
-			roots:       []string{"highest.apex.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/apex/",
-			expectedOut: []string{
-				"highest.apex",
-				"highest.apex/bin/bin1",
-				"highest.apex/bin/bin2",
-				"highest.apex/lib/liba.so",
-				"highest.apex/lib/libb.so",
-			},
-		},
-		{
-			condition:   "restricted",
-			name:        "container",
-			roots:       []string{"container.zip.meta_lic"},
-			stripPrefix: "out/target/product/fictional/data/",
-			expectedOut: []string{
-				"container.zip",
-				"container.zip/bin1",
-				"container.zip/bin2",
-				"container.zip/liba.so",
-				"container.zip/libb.so",
-			},
-		},
-		{
-			condition:   "restricted",
-			name:        "application",
-			roots:       []string{"application.meta_lic"},
-			stripPrefix: "out/target/product/fictional/bin/",
-			expectedOut: []string{"application"},
-		},
-		{
-			condition:   "restricted",
-			name:        "binary",
-			roots:       []string{"bin/bin1.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"bin/bin1"},
-		},
-		{
-			condition:   "restricted",
-			name:        "library",
-			roots:       []string{"lib/libd.so.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"lib/libd.so"},
-		},
-		{
-			condition:   "proprietary",
-			name:        "apex",
-			roots:       []string{"highest.apex.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/apex/",
-			expectedOut: []string{
-				"highest.apex",
-				"highest.apex/bin/bin1",
-				"highest.apex/bin/bin2",
-				"highest.apex/lib/liba.so",
-				"highest.apex/lib/libb.so",
-			},
-		},
-		{
-			condition:   "proprietary",
-			name:        "container",
-			roots:       []string{"container.zip.meta_lic"},
-			stripPrefix: "out/target/product/fictional/data/",
-			expectedOut: []string{
-				"container.zip",
-				"container.zip/bin1",
-				"container.zip/bin2",
-				"container.zip/liba.so",
-				"container.zip/libb.so",
-			},
-		},
-		{
-			condition:   "proprietary",
-			name:        "application",
-			roots:       []string{"application.meta_lic"},
-			stripPrefix: "out/target/product/fictional/bin/",
-			expectedOut: []string{"application"},
-		},
-		{
-			condition:   "proprietary",
-			name:        "binary",
-			roots:       []string{"bin/bin1.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"bin/bin1"},
-		},
-		{
-			condition:   "proprietary",
-			name:        "library",
-			roots:       []string{"lib/libd.so.meta_lic"},
-			stripPrefix: "out/target/product/fictional/system/",
-			expectedOut: []string{"lib/libd.so"},
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.condition+" "+tt.name, func(t *testing.T) {
-			stdout := &bytes.Buffer{}
-			stderr := &bytes.Buffer{}
-
-			rootFiles := make([]string, 0, len(tt.roots))
-			for _, r := range tt.roots {
-				rootFiles = append(rootFiles, "testdata/"+tt.condition+"/"+r)
-			}
-
-			ctx := context{stdout, stderr, compliance.GetFS(tt.outDir), []string{tt.stripPrefix}}
-
-			err := billOfMaterials(&ctx, rootFiles...)
-			if err != nil {
-				t.Fatalf("bom: error = %v, stderr = %v", err, stderr)
-				return
-			}
-			if stderr.Len() > 0 {
-				t.Errorf("bom: gotStderr = %v, want none", stderr)
-			}
-
-			t.Logf("got stdout: %s", stdout.String())
-
-			t.Logf("want stdout: %s", strings.Join(tt.expectedOut, "\n"))
-
-			out := bufio.NewScanner(stdout)
-			lineno := 0
-			for out.Scan() {
-				line := out.Text()
-				if strings.TrimLeft(line, " ") == "" {
-					continue
-				}
-				if len(tt.expectedOut) <= lineno {
-					t.Errorf("bom: unexpected output at line %d: got %q, want nothing (wanted %d lines)", lineno+1, line, len(tt.expectedOut))
-				} else if tt.expectedOut[lineno] != line {
-					t.Errorf("bom: unexpected output at line %d: got %q, want %q", lineno+1, line, tt.expectedOut[lineno])
-				}
-				lineno++
-			}
-			for ; lineno < len(tt.expectedOut); lineno++ {
-				t.Errorf("bom: missing output line %d: ended early, want %q", lineno+1, tt.expectedOut[lineno])
-			}
-		})
-	}
-}