94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
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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 genrule
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import (
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"path/filepath"
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"github.com/google/blueprint"
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"github.com/google/blueprint/pathtools"
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"android/soong/common"
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)
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var (
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pctx = blueprint.NewPackageContext("android/soong/genrule")
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)
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func init() {
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pctx.VariableConfigMethod("srcDir", common.Config.SrcDir)
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}
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type SourceFileGenerator interface {
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GeneratedSourceFiles() []string
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}
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type genSrcsProperties struct {
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// cmd: command to run on each input file. Available variables for substitution:
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// $in: an input file
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// $out: the corresponding output file
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// $srcDir: the root directory of the source tree
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Cmd string
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// srcs: list of input files
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Srcs []string
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// output_extension: extension that will be substituted for each output file
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Output_extension string
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}
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func GenSrcsFactory() (blueprint.Module, []interface{}) {
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module := &genSrcs{}
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return common.InitAndroidModule(module, &module.properties)
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}
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type genSrcs struct {
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common.AndroidModuleBase
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properties genSrcsProperties
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outputFiles []string
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}
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func (g *genSrcs) GenerateAndroidBuildActions(ctx common.AndroidModuleContext) {
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rule := ctx.Rule(pctx, "genSrcs", blueprint.RuleParams{
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Command: g.properties.Cmd,
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})
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srcFiles := g.properties.Srcs
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srcFiles = pathtools.PrefixPaths(srcFiles, common.ModuleSrcDir(ctx))
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srcFiles = common.ExpandGlobs(ctx, srcFiles)
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g.outputFiles = make([]string, 0, len(srcFiles))
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for _, in := range srcFiles {
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out := pathtools.ReplaceExtension(in, g.properties.Output_extension)
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out = filepath.Join(common.ModuleGenDir(ctx), out)
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g.outputFiles = append(g.outputFiles, out)
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ctx.Build(pctx, blueprint.BuildParams{
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Rule: rule,
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Inputs: []string{in},
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Outputs: []string{out},
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// TODO: visit dependencies to add implicit dependencies on required tools
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})
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}
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}
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var _ SourceFileGenerator = (*genSrcs)(nil)
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func (g *genSrcs) GeneratedSourceFiles() []string {
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return g.outputFiles
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}
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