Add a symbols_map tool for extracting identifiers from elf and r8 files
Add a symbols_map tool that can extract an identifiying hash from
and elf file or an r8 dictionary. The tool writes the hash to a
textproto, and also supports a merge mode to combine textprotos into
a output file for inclusion in the build artifacts.
Bug: 218888599
Test: m dist
Test: symbols_map_test.go
Change-Id: Icd3ed6e5510e058c92d97c78759e7a4cfcdbb6ca
diff --git a/cmd/symbols_map/r8_test.go b/cmd/symbols_map/r8_test.go
new file mode 100644
index 0000000..5712da9
--- /dev/null
+++ b/cmd/symbols_map/r8_test.go
@@ -0,0 +1,91 @@
+// Copyright 2022 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 (
+ "bytes"
+ "strings"
+ "testing"
+)
+
+func Test_extractR8CompilerHash(t *testing.T) {
+ testCases := []struct {
+ name string
+ data string
+
+ hash string
+ err string
+ }{
+ {
+ name: "simple",
+ data: `# compiler: R8
+# compiler_version: 3.3.18-dev
+# min_api: 10000
+# compiler_hash: bab44c1a04a2201b55fe10394f477994205c34e0
+# common_typos_disable
+# {"id":"com.android.tools.r8.mapping","version":"2.0"}
+# pg_map_id: 7fe8b95
+# pg_map_hash: SHA-256 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da
+android.car.userlib.UserHelper -> android.car.userlib.UserHelper:
+`,
+ hash: "7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da",
+ },
+ {
+ name: "empty",
+ data: ``,
+ hash: "",
+ },
+ {
+ name: "non comment line",
+ data: `# compiler: R8
+# compiler_version: 3.3.18-dev
+# min_api: 10000
+# compiler_hash: bab44c1a04a2201b55fe10394f477994205c34e0
+# common_typos_disable
+# {"id":"com.android.tools.r8.mapping","version":"2.0"}
+# pg_map_id: 7fe8b95
+android.car.userlib.UserHelper -> android.car.userlib.UserHelper:
+# pg_map_hash: SHA-256 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da
+`,
+ hash: "",
+ },
+ {
+ name: "invalid hash",
+ data: `# pg_map_hash: foobar 7fe8b95ae71f179f63d2a585356fb9cf2c8fb94df9c9dd50621ffa6d9e9e88da`,
+ err: "invalid hash type",
+ },
+ }
+
+ for _, tt := range testCases {
+ t.Run(tt.name, func(t *testing.T) {
+ hash, err := extractR8CompilerHash(bytes.NewBufferString(tt.data))
+ if err != nil {
+ if tt.err != "" {
+ if !strings.Contains(err.Error(), tt.err) {
+ t.Fatalf("incorrect error in extractR8CompilerHash, want %s got %s", tt.err, err)
+ }
+ } else {
+ t.Fatalf("unexpected error in extractR8CompilerHash: %s", err)
+ }
+ } else if tt.err != "" {
+ t.Fatalf("missing error in extractR8CompilerHash, want %s", tt.err)
+ }
+
+ if g, w := hash, tt.hash; g != w {
+ t.Errorf("incorrect hash, want %q got %q", w, g)
+ }
+ })
+ }
+}