Roboleaf product configuration runner
The application rbcrun executes Starlark scripts that define Android product configurations.
See README.md for details.
Test: go test
Fixes: 180529448
Change-Id: I7d728b47d3f381b7052a0d7d51c9e698e5c2e316
diff --git a/tools/rbcrun/cmd/rbcrun.go b/tools/rbcrun/cmd/rbcrun.go
new file mode 100644
index 0000000..7848562
--- /dev/null
+++ b/tools/rbcrun/cmd/rbcrun.go
@@ -0,0 +1,98 @@
+// Copyright 2021 Google LLC
+//
+// 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 main
+
+import (
+ "flag"
+ "fmt"
+ "go.starlark.net/starlark"
+ "os"
+ "rbcrun"
+ "strings"
+)
+
+var (
+ execprog = flag.String("c", "", "execute program `prog`")
+ rootdir = flag.String("d", ".", "the value of // for load paths")
+ file = flag.String("f", "", "file to execute")
+ perfFile = flag.String("perf", "", "save performance data")
+)
+
+func main() {
+ flag.Parse()
+ filename := *file
+ var src interface{}
+ var env []string
+
+ rc := 0
+ for _, arg := range flag.Args() {
+ if strings.Contains(arg, "=") {
+ env = append(env, arg)
+ } else if filename == "" {
+ filename = arg
+ } else {
+ quit("only one file can be executed\n")
+ }
+ }
+ if *execprog != "" {
+ if filename != "" {
+ quit("either -c or file name should be present\n")
+ }
+ filename = "<cmdline>"
+ src = *execprog
+ }
+ if filename == "" {
+ if len(env) > 0 {
+ fmt.Fprintln(os.Stderr,
+ "no file to run -- if your file's name contains '=', use -f to specify it")
+ }
+ flag.Usage()
+ os.Exit(1)
+ }
+ if stat, err := os.Stat(*rootdir); os.IsNotExist(err) || !stat.IsDir() {
+ quit("%s is not a directory\n", *rootdir)
+ }
+ if *perfFile != "" {
+ pprof, err := os.Create(*perfFile)
+ if err != nil {
+ quit("%s: err", *perfFile)
+ }
+ defer pprof.Close()
+ if err := starlark.StartProfile(pprof); err != nil {
+ quit("%s\n", err)
+ }
+ }
+ rbcrun.LoadPathRoot = *rootdir
+ err := rbcrun.Run(filename, src, env)
+ if *perfFile != "" {
+ if err2 := starlark.StopProfile(); err2 != nil {
+ fmt.Fprintln(os.Stderr, err2)
+ rc = 1
+ }
+ }
+ if err != nil {
+ if evalErr, ok := err.(*starlark.EvalError); ok {
+ quit("%s\n", evalErr.Backtrace())
+ } else {
+ quit("%s\n", err)
+ }
+ }
+ os.Exit(rc)
+}
+
+func quit(format string, s ...interface{}) {
+ fmt.Fprintln(os.Stderr, format, s)
+ os.Exit(2)
+}