pkger/here/here.go

50 lines
778 B
Go

package here
import (
"bytes"
"fmt"
"os/exec"
"regexp"
"strings"
"sync"
)
var cache = &infoMap{
data: &sync.Map{},
}
func run(n string, args ...string) ([]byte, error) {
c := exec.Command(n, args...)
bb := &bytes.Buffer{}
c.Stdout = bb
c.Stderr = bb
err := c.Run()
if err != nil {
return nil, fmt.Errorf("%w: %q: %s", err, strings.Join(c.Args, " "), bb)
}
return bb.Bytes(), nil
}
func Cache(p string, fn func(string) (Info, error)) (Info, error) {
i, ok := cache.Load(p)
if ok {
return i, nil
}
i, err := fn(p)
if err != nil {
return i, err
}
cache.Store(p, i)
return i, nil
}
func ClearCache() {
cache = &infoMap{
data: &sync.Map{},
}
}
var nonGoDirRx = regexp.MustCompile(`cannot find main|go help modules|go: |build .:|no Go files`)