64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
package harness
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"sync"
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)
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var (
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binOnce sync.Once
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binPath string
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binErr error
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)
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// Binary 返回已编译好的 nixmsg 可执行文件路径（整个进程只编译一次）。
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func Binary() (string, error) {
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binOnce.Do(func() {
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root, err := moduleRoot()
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if err != nil {
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binErr = err
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return
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}
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dir, err := os.MkdirTemp("", "nixmsg-harness-bin-*")
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if err != nil {
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binErr = err
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return
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}
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name := "nixmsg"
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if runtime.GOOS == "windows" {
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name += ".exe"
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}
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out := filepath.Join(dir, name)
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cmd := exec.Command("go", "build", "-o", out, "./cmd/nixmsg")
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cmd.Dir = root
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cmd.Env = append(os.Environ(), "CGO_ENABLED=0")
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if outBytes, runErr := cmd.CombinedOutput(); runErr != nil {
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binErr = fmt.Errorf("build nixmsg: %w\n%s", runErr, outBytes)
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return
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}
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binPath = out
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})
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return binPath, binErr
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}
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func moduleRoot() (string, error) {
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dir, err := os.Getwd()
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if err != nil {
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return "", err
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}
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for {
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if _, statErr := os.Stat(filepath.Join(dir, "go.mod")); statErr == nil {
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return dir, nil
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}
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parent := filepath.Dir(dir)
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if parent == dir {
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return "", fmt.Errorf("go.mod not found from %s", dir)
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}
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dir = parent
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}
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}
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