| // Copyright 2016 The LUCI Authors. |
| // |
| // 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 defines the `gorun` tool, a shorthand tool to extend the |
| // "go run"-like convenience to packages. |
| // |
| // Unfortunately, "go run" is hard to use when the target has more than one |
| // ".go" file, and even harder when the target has "_test.go" files. |
| // |
| // This is just a bootstrap to "go build /path/to/X && /path/to/X" using a |
| // temporary directory for build storage. |
| package main |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "runtime" |
| |
| "go.chromium.org/luci/common/errors" |
| "go.chromium.org/luci/common/system/exitcode" |
| ) |
| |
| func mainImpl(args []string) (int, error) { |
| if len(args) < 1 { |
| return 1, errors.New("accepts one argument: package") |
| } |
| pkg, args := args[0], args[1:] |
| |
| // Create a temporary output directory to build into. |
| tmpdir, err := ioutil.TempDir("", "luci-gorun") |
| if err != nil { |
| return 1, errors.Annotate(err, "failed to create temporary directory").Err() |
| } |
| defer os.RemoveAll(tmpdir) |
| |
| exePath := filepath.Join(tmpdir, "gorun_target") |
| if runtime.GOOS == "windows" { |
| exePath += ".exe" |
| } |
| |
| // Build the package. |
| cmd := exec.Command("go", "build", "-o", exePath, pkg) |
| cmd.Stdout = os.Stdout |
| cmd.Stderr = os.Stderr |
| if err := cmd.Run(); err != nil { |
| return 1, errors.Annotate(err, "failed to build: %s", pkg).Err() |
| } |
| |
| // Run the package. |
| cmd = exec.Command(exePath, args...) |
| cmd.Stdin = os.Stdin |
| cmd.Stdout = os.Stdout |
| cmd.Stderr = os.Stderr |
| if err := cmd.Run(); err != nil { |
| if rc, ok := exitcode.Get(err); ok { |
| return rc, nil |
| } |
| return 1, errors.Annotate(err, "failed to run: %s", pkg).Err() |
| } |
| |
| return 0, nil |
| } |
| |
| func main() { |
| rc, err := mainImpl(os.Args[1:]) |
| if err != nil { |
| for _, line := range errors.RenderStack(err) { |
| os.Stderr.WriteString(line + "\n") |
| } |
| } |
| os.Exit(rc) |
| } |