Share version settings with product config makefile.
Generate version settings from build/make/core/version_defaults.mk.
The generated settings are then loaded into the launcher code and passed
to the environment setup code.
Bug: 198995713
Test: internal
Change-Id: I66131d2c5b232784a9ff0bba9fbd5db62302aaba
diff --git a/mk2rbc/version_defaults.go b/mk2rbc/version_defaults.go
new file mode 100644
index 0000000..27e8198
--- /dev/null
+++ b/mk2rbc/version_defaults.go
@@ -0,0 +1,109 @@
+// 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 mk2rbc
+
+import (
+ mkparser "android/soong/androidmk/parser"
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "sort"
+ "strconv"
+ "strings"
+)
+
+const codenamePrefix = "PLATFORM_VERSION_CODENAME."
+
+// ParseVersionDefaults extracts version settings from the given file
+// and returns the map.
+func ParseVersionDefaults(path string) (map[string]string, error) {
+ contents, err := ioutil.ReadFile(path)
+ if err != nil {
+ return nil, err
+ }
+ parser := mkparser.NewParser(path, bytes.NewBuffer(contents))
+ nodes, errs := parser.Parse()
+ if len(errs) > 0 {
+ for _, e := range errs {
+ fmt.Fprintln(os.Stderr, "ERROR:", e)
+ }
+ return nil, fmt.Errorf("cannot parse %s", path)
+ }
+
+ result := map[string]string{
+ "DEFAULT_PLATFORM_VERSION": "",
+ "MAX_PLATFORM_VERSION": "",
+ "MIN_PLATFORM_VERSION": "A",
+ "PLATFORM_BASE_SDK_EXTENSION_VERSION": "",
+ "PLATFORM_SDK_EXTENSION_VERSION": "",
+ "PLATFORM_SDK_VERSION": "",
+ "PLATFORM_SECURITY_PATCH": "",
+ "PLATFORM_VERSION_LAST_STABLE": "",
+ }
+ for _, node := range nodes {
+ asgn, ok := node.(*mkparser.Assignment)
+ if !(ok && asgn.Name.Const()) {
+ continue
+ }
+ s := asgn.Name.Strings[0]
+ _, ok = result[s]
+ if !ok {
+ ok = strings.HasPrefix(s, codenamePrefix)
+ }
+ if !ok {
+ continue
+ }
+ v := asgn.Value
+ if !v.Const() {
+ return nil, fmt.Errorf("the value of %s should be constant", s)
+ }
+ result[s] = strings.TrimSpace(v.Strings[0])
+ }
+ return result, nil
+}
+
+func genericValue(s string) interface{} {
+ if ival, err := strconv.ParseInt(s, 0, 0); err == nil {
+ return ival
+ }
+ return s
+}
+
+// VersionDefaults generates the contents of the version_defaults.rbc file
+func VersionDefaults(values map[string]string) string {
+ var sink bytes.Buffer
+ var lines []string
+ var codenames []string
+ for name, value := range values {
+ if strings.HasPrefix(name, codenamePrefix) {
+ codenames = append(codenames,
+ fmt.Sprintf("%q: %q", strings.TrimPrefix(name, codenamePrefix), value))
+ } else {
+ // Print numbers as such
+ lines = append(lines, fmt.Sprintf(" %s = %#v,\n",
+ strings.ToLower(name), genericValue(value)))
+ }
+ }
+ sort.Strings(lines)
+ sink.WriteString("version_defaults = struct(\n")
+ for _, l := range lines {
+ sink.WriteString(l)
+ }
+ sink.WriteString(" codenames = { ")
+ sink.WriteString(strings.Join(codenames, ", "))
+ sink.WriteString(" }\n)\n")
+ return sink.String()
+}