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144 lines
3.8 KiB
144 lines
3.8 KiB
// Copyright (C) 2017 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hidl
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import (
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"sync"
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"github.com/google/blueprint"
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"github.com/google/blueprint/proptools"
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"android/soong/android"
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)
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var (
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currentTxtRule = pctx.StaticRule("currentTxtRule", blueprint.RuleParams{
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Command: "cp -f ${in} ${output}",
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Description: "copy current.txt: ${in} => ${output}",
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}, "output")
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)
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type hidlPackageRootProperties struct {
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// Path to the package root from android build root. It is recommended not to set this and
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// use the current path. This will be deprecated in the future.
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Path *string
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// True to require a current.txt API file here.
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//
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// When false, it uses the file only when it exists.
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Use_current *bool
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// True to require all things referenced by this package root to be frozen.
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Require_frozen *bool
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}
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func init() {
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android.RegisterModuleType("hidl_package_root", hidlPackageRootFactory)
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}
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type hidlPackageRoot struct {
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android.ModuleBase
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properties hidlPackageRootProperties
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currentPath android.OptionalPath
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genOutputs android.Paths
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}
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var _ android.SourceFileProducer = (*hidlPackageRoot)(nil)
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func (r *hidlPackageRoot) getFullPackageRoot() string {
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return "-r" + r.Name() + ":" + *r.properties.Path
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}
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func (r *hidlPackageRoot) getCurrentPath() android.OptionalPath {
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return r.currentPath
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}
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func (r *hidlPackageRoot) requireFrozen() bool {
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return proptools.BoolDefault(r.properties.Require_frozen, false)
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}
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func (r *hidlPackageRoot) generateCurrentFile(ctx android.ModuleContext) {
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if !r.currentPath.Valid() {
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return
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}
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output := android.PathForModuleGen(ctx, r.Name()+".txt")
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r.genOutputs = append(r.genOutputs, output)
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: currentTxtRule,
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Input: r.currentPath.Path(),
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Output: output,
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Args: map[string]string{
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"output": output.String(),
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},
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})
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}
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func (r *hidlPackageRoot) Srcs() android.Paths {
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return r.genOutputs
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}
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func (r *hidlPackageRoot) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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if r.properties.Path == nil {
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r.properties.Path = proptools.StringPtr(ctx.ModuleDir())
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}
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if proptools.BoolDefault(r.properties.Use_current, false) {
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if *r.properties.Path != ctx.ModuleDir() {
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ctx.PropertyErrorf("path", "Cannot use unrelated path with use_current. "+
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"Presumably this hidl_package_root should be at %s. Otherwise, current.txt "+
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"could be located at %s, but use_current must be removed. path is by default "+
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"the path of hidl_package_root.", *r.properties.Path, ctx.ModuleDir())
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return
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}
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r.currentPath = android.OptionalPathForPath(android.PathForModuleSrc(ctx, "current.txt"))
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} else {
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r.currentPath = android.ExistentPathForSource(ctx, ctx.ModuleDir(), "current.txt")
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}
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r.generateCurrentFile(ctx)
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}
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func (r *hidlPackageRoot) DepsMutator(ctx android.BottomUpMutatorContext) {
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}
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var packageRootsMutex sync.Mutex
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var packageRoots []*hidlPackageRoot
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func hidlPackageRootFactory() android.Module {
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r := &hidlPackageRoot{}
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r.AddProperties(&r.properties)
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android.InitAndroidModule(r)
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packageRootsMutex.Lock()
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packageRoots = append(packageRoots, r)
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packageRootsMutex.Unlock()
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return r
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}
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func lookupPackageRoot(name string) *hidlPackageRoot {
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for _, i := range packageRoots {
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if i.ModuleBase.Name() == name {
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return i
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}
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}
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return nil
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}
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