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// Copyright 2017 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 python
// This file contains the module types for building Python binary.
import (
"fmt"
"android/soong/android"
)
func init() {
android.RegisterModuleType("python_binary_host", PythonBinaryHostFactory)
}
type BinaryProperties struct {
// the name of the source file that is the main entry point of the program.
// this file must also be listed in srcs.
// If left unspecified, module name is used instead.
// If name doesn’t match any filename in srcs, main must be specified.
Main *string `android:"arch_variant"`
// set the name of the output binary.
Stem *string `android:"arch_variant"`
// append to the name of the output binary.
Suffix *string `android:"arch_variant"`
// list of compatibility suites (for example "cts", "vts") that the module should be
// installed into.
Test_suites []string `android:"arch_variant"`
// whether to use `main` when starting the executable. The default is true, when set to
// false it will act much like the normal `python` executable, but with the sources and
// libraries automatically included in the PYTHONPATH.
Autorun *bool `android:"arch_variant"`
}
type binaryDecorator struct {
binaryProperties BinaryProperties
*pythonInstaller
}
type IntermPathProvider interface {
IntermPathForModuleOut() android.OptionalPath
}
var (
stubTemplateHost = "build/soong/python/scripts/stub_template_host.txt"
)
func NewBinary(hod android.HostOrDeviceSupported) (*Module, *binaryDecorator) {
module := newModule(hod, android.MultilibFirst)
decorator := &binaryDecorator{pythonInstaller: NewPythonInstaller("bin", "")}
module.bootstrapper = decorator
module.installer = decorator
return module, decorator
}
func PythonBinaryHostFactory() android.Module {
module, _ := NewBinary(android.HostSupportedNoCross)
return module.Init()
}
func (binary *binaryDecorator) autorun() bool {
return BoolDefault(binary.binaryProperties.Autorun, true)
}
func (binary *binaryDecorator) bootstrapperProps() []interface{} {
return []interface{}{&binary.binaryProperties}
}
func (binary *binaryDecorator) bootstrap(ctx android.ModuleContext, actualVersion string,
embeddedLauncher bool, srcsPathMappings []pathMapping, srcsZip android.Path,
depsSrcsZips android.Paths) android.OptionalPath {
main := ""
if binary.autorun() {
main = binary.getPyMainFile(ctx, srcsPathMappings)
}
var launcherPath android.OptionalPath
if embeddedLauncher {
ctx.VisitDirectDepsWithTag(launcherTag, func(m android.Module) {
if provider, ok := m.(IntermPathProvider); ok {
if launcherPath.Valid() {
panic(fmt.Errorf("launcher path was found before: %q",
launcherPath))
}
launcherPath = provider.IntermPathForModuleOut()
}
})
}
binFile := registerBuildActionForParFile(ctx, embeddedLauncher, launcherPath,
binary.getHostInterpreterName(ctx, actualVersion),
main, binary.getStem(ctx), append(android.Paths{srcsZip}, depsSrcsZips...))
return android.OptionalPathForPath(binFile)
}
// get host interpreter name.
func (binary *binaryDecorator) getHostInterpreterName(ctx android.ModuleContext,
actualVersion string) string {
var interp string
switch actualVersion {
case pyVersion2:
interp = "python2.7"
case pyVersion3:
interp = "python3"
default:
panic(fmt.Errorf("unknown Python actualVersion: %q for module: %q.",
actualVersion, ctx.ModuleName()))
}
return interp
}
// find main program path within runfiles tree.
func (binary *binaryDecorator) getPyMainFile(ctx android.ModuleContext,
srcsPathMappings []pathMapping) string {
var main string
if String(binary.binaryProperties.Main) == "" {
main = ctx.ModuleName() + pyExt
} else {
main = String(binary.binaryProperties.Main)
}
for _, path := range srcsPathMappings {
if main == path.src.Rel() {
return path.dest
}
}
ctx.PropertyErrorf("main", "%q is not listed in srcs.", main)
return ""
}
func (binary *binaryDecorator) getStem(ctx android.ModuleContext) string {
stem := ctx.ModuleName()
if String(binary.binaryProperties.Stem) != "" {
stem = String(binary.binaryProperties.Stem)
}
return stem + String(binary.binaryProperties.Suffix)
}
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