1 // Copyright 2017 Google Inc. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package android 16 17 import ( 18 "encoding/json" 19 "strconv" 20 ) 21 22 func init() { 23 RegisterSingletonType("api_levels", ApiLevelsSingleton) 24 } 25 26 func ApiLevelsSingleton() Singleton { 27 return &apiLevelsSingleton{} 28 } 29 30 type apiLevelsSingleton struct{} 31 32 func createApiLevelsJson(ctx SingletonContext, file WritablePath, 33 apiLevelsMap map[string]int) { 34 35 jsonStr, err := json.Marshal(apiLevelsMap) 36 if err != nil { 37 ctx.Errorf(err.Error()) 38 } 39 40 ctx.Build(pctx, BuildParams{ 41 Rule: WriteFile, 42 Description: "generate " + file.Base(), 43 Output: file, 44 Args: map[string]string{ 45 "content": string(jsonStr[:]), 46 }, 47 }) 48 } 49 50 func GetApiLevelsJson(ctx PathContext) WritablePath { 51 return PathForOutput(ctx, "api_levels.json") 52 } 53 54 var apiLevelsMapKey = NewOnceKey("ApiLevelsMap") 55 56 func getApiLevelsMap(config Config) map[string]int { 57 return config.Once(apiLevelsMapKey, func() interface{} { 58 baseApiLevel := 9000 59 apiLevelsMap := map[string]int{ 60 "G": 9, 61 "I": 14, 62 "J": 16, 63 "J-MR1": 17, 64 "J-MR2": 18, 65 "K": 19, 66 "L": 21, 67 "L-MR1": 22, 68 "M": 23, 69 "N": 24, 70 "N-MR1": 25, 71 "O": 26, 72 "O-MR1": 27, 73 "P": 28, 74 "Q": 29, 75 } 76 for i, codename := range config.PlatformVersionCombinedCodenames() { 77 apiLevelsMap[codename] = baseApiLevel + i 78 } 79 80 return apiLevelsMap 81 }).(map[string]int) 82 } 83 84 // Converts an API level string into its numeric form. 85 // * Codenames are decoded. 86 // * Numeric API levels are simply converted. 87 // * "minimum" and "current" are not currently handled since the former is 88 // NDK specific and the latter has inconsistent meaning. 89 func ApiStrToNum(ctx BaseContext, apiLevel string) (int, error) { 90 num, ok := getApiLevelsMap(ctx.Config())[apiLevel] 91 if ok { 92 return num, nil 93 } 94 return strconv.Atoi(apiLevel) 95 } 96 97 func (a *apiLevelsSingleton) GenerateBuildActions(ctx SingletonContext) { 98 apiLevelsMap := getApiLevelsMap(ctx.Config()) 99 apiLevelsJson := GetApiLevelsJson(ctx) 100 createApiLevelsJson(ctx, apiLevelsJson, apiLevelsMap) 101 } 102