Add find_input_delta (b40260df) · Commits · e / os / android_build_soong

cmd/find_input_delta/find_input_delta/Android.bp

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		package {
		default_applicable_licenses: ["Android-Apache-2.0"],
		}

		bootstrap_go_package {
		name: "soong-cmd-find_input_delta-find_input_delta",
		pkgPath: "android/soong/cmd/find_input_delta/find_input_delta",
		deps: [
		"golang-protobuf-encoding-prototext",
		"golang-protobuf-reflect-protoreflect",
		"golang-protobuf-runtime-protoimpl",
		"soong-cmd-find_input_delta-proto",
		"soong-cmd-find_input_delta-lib",
		],
		srcs: [
		"main.go",
		],
		}

cmd/find_input_delta/find_input_delta/main.go

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		// Copyright 2024 Google Inc. All rights reserved.
		//
		// 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 (
		"flag"
		"os"
		"strings"

		fid_lib "android/soong/cmd/find_input_delta/find_input_delta_lib"
		)

		func main() {
		var top string
		var prior_state_file string
		var new_state_file string
		var target string
		var inputs_file string
		var template string
		var inputs []string
		var inspect bool
		var err error

		flag.StringVar(&top, "top", ".", "path to top of workspace")
		flag.StringVar(&prior_state_file, "prior_state", "", "prior internal state file")
		flag.StringVar(&new_state_file, "new_state", "", "new internal state file")
		flag.StringVar(&target, "target", "", "name of ninja output file for build action")
		flag.StringVar(&inputs_file, "inputs_file", "", "file containing list of input files")
		flag.StringVar(&template, "template", fid_lib.DefaultTemplate, "output template for FileList")
		flag.BoolVar(&inspect, "inspect", false, "whether to inspect file contents")

		flag.Parse()

		if target == "" {
		panic("must specify --target")
		}
		if prior_state_file == "" {
		prior_state_file = target + ".pc_state"
		}
		if new_state_file == "" {
		new_state_file = prior_state_file + ".new"
		}

		if err = os.Chdir(top); err != nil {
		panic(err)
		}

		inputs = flag.Args()
		if inputs_file != "" {
		data, err := os.ReadFile(inputs_file)
		if err != nil {
		panic(err)
		}
		inputs = append(inputs, strings.Split(string(data), "\n")...)
		}

		// Read the prior state
		prior_state, err := fid_lib.LoadState(prior_state_file, fid_lib.OsFs)
		if err != nil {
		panic(err)
		}
		// Create the new state
		new_state, err := fid_lib.CreateState(inputs, inspect, fid_lib.OsFs)
		if err != nil {
		panic(err)
		}
		if err = fid_lib.WriteState(new_state, new_state_file); err != nil {
		panic(err)
		}

		file_list := *fid_lib.CompareInternalState(prior_state, new_state, target)

		if err = file_list.Format(os.Stdout, template); err != nil {
		panic(err)
		}
		}

cmd/find_input_delta/find_input_delta_lib/Android.bp

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		// Copyright 2024 Google Inc. All rights reserved.
		//
		// 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 {
		default_applicable_licenses: ["Android-Apache-2.0"],
		}

		bootstrap_go_package {
		name: "soong-cmd-find_input_delta-lib",
		pkgPath: "android/soong/cmd/find_input_delta/find_input_delta_lib",
		deps: [
		"golang-protobuf-encoding-prototext",
		"golang-protobuf-reflect-protoreflect",
		"golang-protobuf-runtime-protoimpl",
		"soong-cmd-find_input_delta-proto",
		"blueprint-pathtools",
		],
		srcs: [
		"fs.go",
		"file_list.go",
		"internal_state.go",
		],
		}

cmd/find_input_delta/find_input_delta_lib/file_list.go

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		// Copyright 2024 Google Inc. All rights reserved.
		//
		// 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 find_input_delta_lib

		import (
		"io"
		"text/template"

		fid_exp "android/soong/cmd/find_input_delta/find_input_delta_proto"
		"google.golang.org/protobuf/proto"
		)

		var DefaultTemplate = `
		{{- define "contents"}}
		{{- range .Deletions}}-{{.}} {{end}}
		{{- range .Additions}}+{{.}} {{end}}
		{{- range .Changes}}+{{- .Name}} {{end}}
		{{- range .Changes}}
		{{- if or .Additions .Deletions .Changes}}--file {{.Name}} {{template "contents" .}}--endfile {{end}}
		{{- end}}
		{{- end}}
		{{- template "contents" .}}`

		type FileList struct {
		// The name of the parent for the list of file differences.
		// For the outermost FileList, this is the name of the ninja target.
		// Under `Changes`, it is the name of the changed file.
		Name string

		// The added files
		Additions []string

		// The deleted files
		Deletions []string

		// The modified files
		Changes []FileList
		}

		func (fl FileList) Marshal() (*fid_exp.FileList, error) {
		ret := &fid_exp.FileList{
		Name: proto.String(fl.Name),
		}
		if len(fl.Additions) > 0 {
		ret.Additions = fl.Additions
		}
		for _, ch := range fl.Changes {
		change, err := ch.Marshal()
		if err != nil {
		return nil, err
		}
		ret.Changes = append(ret.Changes, change)
		}
		if len(fl.Deletions) > 0 {
		ret.Deletions = fl.Deletions
		}
		return ret, nil
		}

		func (fl FileList) Format(wr io.Writer, format string) error {
		tmpl, err := template.New("filelist").Parse(format)
		if err != nil {
		return err
		}
		return tmpl.Execute(wr, fl)
		}

cmd/find_input_delta/find_input_delta_lib/file_list_test.go

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		// Copyright 2024 Google Inc. All rights reserved.
		//
		// 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 find_input_delta_lib

		import (
		"bytes"
		"slices"
		"testing"

		// For Assert*.
		"android/soong/android"
		)

		func (fl FileList) Equal(other FileList) bool {
		if fl.Name != other.Name {
		return false
		}
		if !slices.Equal(fl.Additions, other.Additions) {
		return false
		}
		if !slices.Equal(fl.Deletions, other.Deletions) {
		return false
		}
		if len(fl.Changes) != len(other.Changes) {
		return false
		}
		for idx, ch := range fl.Changes {
		if !ch.Equal(&other.Changes[idx]) {
		return false
		}
		}
		return true
		}

		func TestFormat(t *testing.T) {
		testCases := []struct {
		Name string
		Template string
		Input FileList
		Expected string
		Err error
		}{
		{
		Name: "no contents",
		Template: DefaultTemplate,
		Input: FileList{
		Name: "target",
		Additions: []string{"add1", "add2"},
		Deletions: []string{"del1", "del2"},
		Changes: []FileList{
		FileList{Name: "mod1"},
		FileList{Name: "mod2"},
		},
		},
		Expected: "-del1 -del2 +add1 +add2 +mod1 +mod2 ",
		Err: nil,
		},
		{
		Name: "adds",
		Template: DefaultTemplate,
		Input: FileList{
		Name: "target",
		Additions: []string{"add1", "add2"},
		},
		Expected: "+add1 +add2 ",
		Err: nil,
		},
		{
		Name: "deletes",
		Template: DefaultTemplate,
		Input: FileList{
		Name: "target",
		Deletions: []string{"del1", "del2"},
		},
		Expected: "-del1 -del2 ",
		Err: nil,
		},
		{
		Name: "changes",
		Template: DefaultTemplate,
		Input: FileList{
		Name: "target",
		Changes: []FileList{
		FileList{Name: "mod1"},
		FileList{Name: "mod2"},
		},
		},
		Expected: "+mod1 +mod2 ",
		Err: nil,
		},
		{
		Name: "with contents",
		Template: DefaultTemplate,
		Input: FileList{
		Name: "target",
		Additions: []string{"add1", "add2"},
		Deletions: []string{"del1", "del2"},
		Changes: []FileList{
		FileList{
		Name: "mod1",
		},
		FileList{
		Name: "mod2",
		Additions: []string{"a1"},
		Deletions: []string{"d1"},
		},
		},
		},
		Expected: "-del1 -del2 +add1 +add2 +mod1 +mod2 --file mod2 -d1 +a1 --endfile ",
		Err: nil,
		},
		}
		for _, tc := range testCases {
		buf := bytes.NewBuffer([]byte{})
		err := tc.Input.Format(buf, tc.Template)
		android.AssertSame(t, tc.Name, tc.Err, err)
		android.AssertSame(t, tc.Name, tc.Expected, buf.String())
		}
		}