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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main_test
import (
"cmd/go/internal/script"
"cmd/go/internal/script/scripttest"
"cmd/go/internal/work"
"errors"
"fmt"
"os"
"os/exec"
"strings"
"time"
)
func scriptCommands(interrupt os.Signal, waitDelay time.Duration) map[string]script.Cmd {
cmds := scripttest.DefaultCmds()
// Customize the "exec" interrupt signal and grace period.
var cancel func(cmd *exec.Cmd) error
if interrupt != nil {
cancel = func(cmd *exec.Cmd) error {
return cmd.Process.Signal(interrupt)
}
}
cmdExec := script.Exec(cancel, waitDelay)
cmds["exec"] = cmdExec
add := func(name string, cmd script.Cmd) {
if _, ok := cmds[name]; ok {
panic(fmt.Sprintf("command %q is already registered", name))
}
cmds[name] = cmd
}
add("cc", scriptCC(cmdExec))
cmdGo := scriptGo(cancel, waitDelay)
add("go", cmdGo)
add("stale", scriptStale(cmdGo))
return cmds
}
// scriptCC runs the C compiler along with platform specific options.
func scriptCC(cmdExec script.Cmd) script.Cmd {
return script.Command(
script.CmdUsage{
Summary: "run the platform C compiler",
Args: "args...",
},
func(s *script.State, args ...string) (script.WaitFunc, error) {
b := work.NewBuilder(s.Getwd())
wait, err := cmdExec.Run(s, append(b.GccCmd(".", ""), args...)...)
if err != nil {
return wait, err
}
waitAndClean := func(s *script.State) (stdout, stderr string, err error) {
stdout, stderr, err = wait(s)
if closeErr := b.Close(); err == nil {
err = closeErr
}
return stdout, stderr, err
}
return waitAndClean, nil
})
}
// scriptGo runs the go command.
func scriptGo(cancel func(*exec.Cmd) error, waitDelay time.Duration) script.Cmd {
return script.Program(testGo, cancel, waitDelay)
}
// scriptStale checks that the named build targets are stale.
func scriptStale(cmdGo script.Cmd) script.Cmd {
return script.Command(
script.CmdUsage{
Summary: "check that build targets are stale",
Args: "target...",
},
func(s *script.State, args ...string) (script.WaitFunc, error) {
if len(args) == 0 {
return nil, script.ErrUsage
}
tmpl := "{{if .Error}}{{.ImportPath}}: {{.Error.Err}}" +
"{{else}}{{if not .Stale}}{{.ImportPath}} ({{.Target}}) is not stale{{end}}" +
"{{end}}"
wait, err := cmdGo.Run(s, append([]string{"list", "-e", "-f=" + tmpl}, args...)...)
if err != nil {
return nil, err
}
stdout, stderr, err := wait(s)
if len(stderr) != 0 {
s.Logf("%s", stderr)
}
if err != nil {
return nil, err
}
if out := strings.TrimSpace(stdout); out != "" {
return nil, errors.New(out)
}
return nil, nil
})
}
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