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- // 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 (
- "bytes"
- "fmt"
- "io/ioutil"
- "os"
- "path/filepath"
- "strings"
- mkparser "android/soong/androidmk/parser"
- )
- // Implements mkparser.Scope, to be used by mkparser.Value.Value()
- type localDirEval struct {
- localDir string
- hasErrors bool
- }
- func (l *localDirEval) Get(name string) string {
- if name == "LOCAL_DIR" {
- return l.localDir
- }
- l.hasErrors = true
- return fmt.Sprintf("$(%s)", name)
- }
- func (l *localDirEval) Set(_, _ string) {
- }
- func (l *localDirEval) Call(_ string, _ []string) []string {
- l.hasErrors = true
- return []string{"$(call ...)"}
- }
- func (l *localDirEval) SetFunc(_ string, _ func([]string) []string) {
- }
- // UpdateProductConfigMap builds product configuration map.
- // The product configuration map maps a product name (i.e., the value of the
- // TARGET_PRODUCT variable) to the top-level configuration file.
- // In the Android's Make-based build machinery, the equivalent of the
- // product configuration map is $(PRODUCT_MAKEFILES), which is the list
- // of <product>:<configuration makefile> pairs (if <product>: is missing,
- // <product> is the basename of the configuration makefile).
- // UpdateProductConfigMap emulates this build logic by processing the
- // assignments to PRODUCT_MAKEFILES in the file passed to it.
- func UpdateProductConfigMap(configMap map[string]string, configMakefile string) error {
- contents, err := ioutil.ReadFile(configMakefile)
- if err != nil {
- return err
- }
- parser := mkparser.NewParser(configMakefile, bytes.NewBuffer(contents))
- nodes, errs := parser.Parse()
- if len(errs) > 0 {
- for _, e := range errs {
- fmt.Fprintln(os.Stderr, "ERROR:", e)
- }
- return fmt.Errorf("cannot parse %s", configMakefile)
- }
- ldEval := &localDirEval{localDir: filepath.Dir(configMakefile)}
- for _, node := range nodes {
- // We are interested in assignments to 'PRODUCT_MAKEFILES'
- asgn, ok := node.(*mkparser.Assignment)
- if !ok {
- continue
- }
- if !(asgn.Name.Const() && asgn.Name.Strings[0] == "PRODUCT_MAKEFILES") {
- continue
- }
- // Resolve the references to $(LOCAL_DIR) in $(PRODUCT_MAKEFILES).
- ldEval.hasErrors = false
- value := asgn.Value.Value(ldEval)
- if ldEval.hasErrors {
- return fmt.Errorf("cannot evaluate %s", asgn.Value.Dump())
- }
- // Each item is either <product>:<configuration makefile>, or
- // just <configuration makefile>
- for _, token := range strings.Fields(value) {
- var product, config_path string
- if n := strings.Index(token, ":"); n >= 0 {
- product = token[0:n]
- config_path = token[n+1:]
- } else {
- config_path = token
- product = filepath.Base(config_path)
- product = strings.TrimSuffix(product, filepath.Ext(product))
- }
- configMap[product] = config_path
- }
- }
- return nil
- }
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