Initial commit

Change-Id: I5f41c4cc0135d6efad2d01aeafb4a6954421c082

CONTRIBUTING.md

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+# How to contribute
+
+We'd love to accept your patches and contributions to this project.
+
+## Before you begin
+
+### Sign our Contributor License Agreement
+
+Contributions to this project must be accompanied by a
+[Contributor License Agreement](https://cla.developers.google.com/about) (CLA).
+You (or your employer) retain the copyright to your contribution; this simply
+gives us permission to use and redistribute your contributions as part of the
+project.
+
+If you or your current employer have already signed the Google CLA (even if it
+was for a different project), you probably don't need to do it again.
+
+Visit <https://cla.developers.google.com/> to see your current agreements or to
+sign a new one.
+
+### Review our community guidelines
+
+This project follows
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).
+
+## Contribution process
+
+### Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.

LICENSE

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+Copyright 2024 Google LLC
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its contributors
+   may be used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# open2opaque
+
+The program open2opaque migrates Go code using Go Protobuf from the Open API
+to the Opaque API.
+
+See https://opaque-preview.stapelberg.ch/go.dev/blog/protobuf-opaque for context.

gen.go

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+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+//go:generate go run genprotos.go
+//go:generate go run gentestdata.go

genprotos.go

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+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func genProtos() error {
+	for _, pb := range []struct {
+		Dir      string
+		Basename string
+		Package  string
+	}{
+		{
+			Dir:      "internal/apiflagdata",
+			Basename: "go_api_enum.proto",
+			Package:  "google.golang.org/open2opaque/internal/apiflagdata",
+		},
+
+		{
+			Dir:      "internal/dashboard",
+			Basename: "stats.proto",
+			Package:  "google.golang.org/open2opaque/internal/dashboard",
+		},
+
+		{
+			Dir:      "internal/fix/testdata/proto2test_go_proto",
+			Basename: "proto2test.proto",
+			Package:  "google.golang.org/open2opaque/internal/fix/testdata/proto2test_go_proto",
+		},
+
+		{
+			Dir:      "internal/fix/testdata/proto3test_go_proto",
+			Basename: "proto3test.proto",
+			Package:  "google.golang.org/open2opaque/internal/fix/testdata/proto3test_go_proto",
+		},
+	} {
+		log.Printf("protoc %s/%s", pb.Dir, pb.Basename)
+		protoc := exec.Command("protoc",
+			"-I=.",
+			"--go_out=.",
+			"--go_opt=M"+pb.Basename+"="+pb.Package,
+			"--go_opt=paths=source_relative")
+		if strings.HasSuffix(pb.Dir, "/proto3test_go_proto") {
+			protoc.Args = append(protoc.Args, "--go_opt=default_api_level=API_HYBRID")
+		}
+		protoc.Args = append(protoc.Args, pb.Basename)
+		protoc.Dir = pb.Dir
+		protoc.Stderr = os.Stderr
+		if err := protoc.Run(); err != nil {
+			return fmt.Errorf("%v: %v", protoc.Args, err)
+		}
+	}
+	return nil
+}
+
+func main() {
+	if err := genProtos(); err != nil {
+		log.Fatal(err)
+	}
+}

gentestdata.go

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+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+
+package main
+
+import (
+	"log"
+	"os"
+
+	"google.golang.org/open2opaque/internal/fix"
+)
+
+func genTestdataFake() error {
+	log.Printf("generating testdata/fake")
+	content := fix.NewSrc("", "")
+	if err := os.MkdirAll("internal/fix/testdata/fake", 0777); err != nil {
+		return err
+	}
+	if err := os.WriteFile("internal/fix/testdata/fake/fake.go", []byte(content), 0666); err != nil {
+		return err
+	}
+	return nil
+}
+
+func main() {
+	if err := genTestdataFake(); err != nil {
+		log.Fatal(err)
+	}
+}

go.mod

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+module google.golang.org/open2opaque
+
+go 1.23
+
+require (
+	github.com/dave/dst v0.27.3
+	github.com/golang/glog v1.2.2
+	github.com/google/go-cmp v0.6.0
+	github.com/google/subcommands v1.2.0
+	github.com/jhump/protoreflect v1.17.0
+	github.com/kylelemons/godebug v1.1.0
+	golang.org/x/exp v0.0.0-20240909161429-701f63a606c0
+	golang.org/x/sync v0.8.0
+	golang.org/x/tools v0.25.0
+	google.golang.org/protobuf v1.35.3-0.20241211112313-560503ec5d74
+)
+
+require (
+	github.com/bufbuild/protocompile v0.14.1 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	golang.org/x/mod v0.21.0 // indirect
+)

go.sum

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+github.com/bufbuild/protocompile v0.14.1 h1:iA73zAf/fyljNjQKwYzUHD6AD4R8KMasmwa/FBatYVw=
+github.com/bufbuild/protocompile v0.14.1/go.mod h1:ppVdAIhbr2H8asPk6k4pY7t9zB1OU5DoEw9xY/FUi1c=
+github.com/dave/dst v0.27.3 h1:P1HPoMza3cMEquVf9kKy8yXsFirry4zEnWOdYPOoIzY=
+github.com/dave/dst v0.27.3/go.mod h1:jHh6EOibnHgcUW3WjKHisiooEkYwqpHLBSX1iOBhEyc=
+github.com/dave/jennifer v1.5.0 h1:HmgPN93bVDpkQyYbqhCHj5QlgvUkvEOzMyEvKLgCRrg=
+github.com/dave/jennifer v1.5.0/go.mod h1:4MnyiFIlZS3l5tSDn8VnzE6ffAhYBMB2SZntBsZGUok=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/golang/glog v1.2.2 h1:1+mZ9upx1Dh6FmUTFR1naJ77miKiXgALjWOZ3NVFPmY=
+github.com/golang/glog v1.2.2/go.mod h1:6AhwSGph0fcJtXVM/PEHPqZlFeoLxhs7/t5UDAwmO+w=
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