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// Copyright 2016 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 genrule
import (
"android/soong/android"
"io"
"strings"
"text/template"
)
func init() {
android.RegisterModuleType("filegroup", FileGroupFactory)
}
type fileGroupProperties struct {
// srcs lists files that will be included in this filegroup
Srcs []string
Exclude_srcs []string
// The base path to the files. May be used by other modules to determine which portion
// of the path to use. For example, when a filegroup is used as data in a cc_test rule,
// the base path is stripped off the path and the remaining path is used as the
// installation directory.
Path *string
// Create a make variable with the specified name that contains the list of files in the
// filegroup, relative to the root of the source tree.
Export_to_make_var *string
}
type fileGroup struct {
android.ModuleBase
properties fileGroupProperties
srcs android.Paths
}
var _ android.SourceFileProducer = (*fileGroup)(nil)
// filegroup modules contain a list of files, and can be used to export files across package
// boundaries. filegroups (and genrules) can be referenced from srcs properties of other modules
// using the syntax ":module".
func FileGroupFactory() android.Module {
module := &fileGroup{}
module.AddProperties(&module.properties)
android.InitAndroidModule(module)
return module
}
func (fg *fileGroup) DepsMutator(ctx android.BottomUpMutatorContext) {
android.ExtractSourcesDeps(ctx, fg.properties.Srcs)
android.ExtractSourcesDeps(ctx, fg.properties.Exclude_srcs)
}
func (fg *fileGroup) GenerateAndroidBuildActions(ctx android.ModuleContext) {
fg.srcs = ctx.ExpandSourcesSubDir(fg.properties.Srcs, fg.properties.Exclude_srcs, String(fg.properties.Path))
}
func (fg *fileGroup) Srcs() android.Paths {
return append(android.Paths{}, fg.srcs...)
}
var androidMkTemplate = template.Must(template.New("filegroup").Parse(`
ifdef {{.makeVar}}
$(error variable {{.makeVar}} set by soong module is already set in make)
endif
{{.makeVar}} := {{.value}}
.KATI_READONLY := {{.makeVar}}
`))
func (fg *fileGroup) AndroidMk() android.AndroidMkData {
return android.AndroidMkData{
Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
if makeVar := String(fg.properties.Export_to_make_var); makeVar != "" {
androidMkTemplate.Execute(w, map[string]string{
"makeVar": makeVar,
"value": strings.Join(fg.srcs.Strings(), " "),
})
}
},
}
}
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