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author | Colin Cross <ccross@android.com> | 2015-03-18 13:28:46 -0700 |
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committer | Colin Cross <ccross@android.com> | 2015-03-19 10:51:41 -0700 |
commit | 5049f02e6040f38aff9722579fc7cc8c05ff9885 (patch) | |
tree | 5b2a99cc229bfdf5d598536b5b4402979fd3529c /genrule | |
parent | 70a255f3c9f9f549740befff8f3ec1974102df5e (diff) | |
download | build_soong-5049f02e6040f38aff9722579fc7cc8c05ff9885.tar.gz build_soong-5049f02e6040f38aff9722579fc7cc8c05ff9885.tar.bz2 build_soong-5049f02e6040f38aff9722579fc7cc8c05ff9885.zip |
Add gensrcs module type
gensrcs allows sources to be generated by a specified command.
Change-Id: I725086fcdcd72bfe6c07fb8903e7b520678a247f
Diffstat (limited to 'genrule')
-rw-r--r-- | genrule/genrule.go | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/genrule/genrule.go b/genrule/genrule.go new file mode 100644 index 00000000..6c8d75b4 --- /dev/null +++ b/genrule/genrule.go @@ -0,0 +1,97 @@ +// Copyright 2015 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 ( + "path/filepath" + + "blueprint" + "blueprint/pathtools" + + "android/soong/common" +) + +type Config interface { + SrcDir() string +} + +var ( + pctx = blueprint.NewPackageContext("android/soong/genrule") +) + +func init() { + pctx.VariableConfigMethod("srcDir", Config.SrcDir) +} + +type SourceFileGenerator interface { + GeneratedSourceFiles() []string +} + +type genSrcsProperties struct { + // cmd: command to run on each input file. Available variables for substitution: + // $in: an input file + // $out: the corresponding output file + // $srcDir: the root directory of the source tree + Cmd string + + // srcs: list of input files + Srcs []string + + // output_extension: extension that will be substituted for each output file + Output_extension string +} + +func NewGenSrcs() (blueprint.Module, []interface{}) { + module := &genSrcs{} + + return common.InitAndroidModule(module, &module.properties) +} + +type genSrcs struct { + common.AndroidModuleBase + + properties genSrcsProperties + outputFiles []string +} + +func (g *genSrcs) GenerateAndroidBuildActions(ctx common.AndroidModuleContext) { + rule := ctx.Rule(pctx, "genSrcs", blueprint.RuleParams{ + Command: g.properties.Cmd, + }) + + srcFiles := g.properties.Srcs + srcFiles = pathtools.PrefixPaths(srcFiles, common.ModuleSrcDir(ctx)) + srcFiles = common.ExpandGlobs(ctx, srcFiles) + + g.outputFiles = make([]string, 0, len(srcFiles)) + + for _, in := range srcFiles { + out := pathtools.ReplaceExtension(in, g.properties.Output_extension) + out = filepath.Join(common.ModuleGenDir(ctx), out) + g.outputFiles = append(g.outputFiles, out) + ctx.Build(pctx, blueprint.BuildParams{ + Rule: rule, + Inputs: []string{in}, + Outputs: []string{out}, + // TODO: visit dependencies to add implicit dependencies on required tools + }) + } +} + +var _ SourceFileGenerator = (*genSrcs)(nil) + +func (g *genSrcs) GeneratedSourceFiles() []string { + return g.outputFiles +} |