Generate file to map codenames to API levels.

am: 30c9d6e771

Change-Id: Ic2290130b7b675f3e82ba805bfe3b5a4fde6e249

5 files changed, 77 insertions, 1 deletions

diff --git a/Android.bp b/Android.bp
index e3948924..c87903f0 100644
--- a/Android.bp
+++ b/Android.bp
@@ -47,6 +47,7 @@ bootstrap_go_package {
     ],
     srcs: [
         "android/androidmk.go",
+        "android/api_levels.go",
         "android/arch.go",
         "android/config.go",
         "android/defaults.go",
diff --git a/android/api_levels.go b/android/api_levels.go
new file mode 100644
index 00000000..c77ced16
--- /dev/null
+++ b/android/api_levels.go
@@ -0,0 +1,63 @@
+// Copyright 2017 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 android
+
+import (
+	"encoding/json"
+
+	"github.com/google/blueprint"
+)
+
+func init() {
+	RegisterSingletonType("api_levels", ApiLevelsSingleton)
+}
+
+func ApiLevelsSingleton() blueprint.Singleton {
+	return &apiLevelsSingleton{}
+}
+
+type apiLevelsSingleton struct{}
+
+func createApiLevelsJson(ctx blueprint.SingletonContext, file string,
+	apiLevelsMap map[string]int) {
+
+	jsonStr, err := json.Marshal(apiLevelsMap)
+	if err != nil {
+		ctx.Errorf(err.Error())
+	}
+
+	ctx.Build(pctx, blueprint.BuildParams{
+		Rule:    WriteFile,
+		Outputs: []string{file},
+		Args: map[string]string{
+			"content": string(jsonStr[:]),
+		},
+	})
+}
+
+func GetApiLevelsJson(ctx PathContext) Path {
+	return PathForOutput(ctx, "api_levels.json")
+}
+
+func (a *apiLevelsSingleton) GenerateBuildActions(ctx blueprint.SingletonContext) {
+	baseApiLevel := 9000
+	apiLevelsMap := map[string]int{}
+	for i, codename := range ctx.Config().(Config).PlatformVersionAllCodenames() {
+		apiLevelsMap[codename] = baseApiLevel + i
+	}
+
+	apiLevelsJson := GetApiLevelsJson(ctx)
+	createApiLevelsJson(ctx, apiLevelsJson.String(), apiLevelsMap)
+}
diff --git a/android/config.go b/android/config.go
index 686eeb8e..3c254851 100644
--- a/android/config.go
+++ b/android/config.go
@@ -353,6 +353,10 @@ func (c *config) PlatformSdkVersion() string {
 	return strconv.Itoa(c.PlatformSdkVersionInt())
 }
 
+func (c *config) PlatformVersionAllCodenames() []string {
+	return c.ProductVariables.Platform_version_all_codenames
+}
+
 func (c *config) BuildNumber() string {
 	return "000000"
 }
diff --git a/android/defs.go b/android/defs.go
index d7e2a9f7..6f463162 100644
--- a/android/defs.go
+++ b/android/defs.go
@@ -80,6 +80,13 @@ var (
 			Description: "concatenate licenses $out",
 		})
 
+	WriteFile = pctx.AndroidStaticRule("WriteFile",
+		blueprint.RuleParams{
+			Command:     "echo '$content' > $out",
+			Description: "writing file $out",
+		},
+		"content")
+
 	// Used only when USE_GOMA=true is set, to restrict non-goma jobs to the local parallelism value
 	localPool = blueprint.NewBuiltinPool("local_pool")
 )
diff --git a/android/variable.go b/android/variable.go
index c5b957be..b0ab2d0c 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -82,7 +82,8 @@ type productVariables struct {
 	// Suffix to add to generated Makefiles
 	Make_suffix *string `json:",omitempty"`
 
-	Platform_sdk_version *int `json:",omitempty"`
+	Platform_sdk_version           *int     `json:",omitempty"`
+	Platform_version_all_codenames []string `json:",omitempty"`
 
 	DeviceName        *string   `json:",omitempty"`
 	DeviceArch        *string   `json:",omitempty"`