dnscrypt-proxy/vendor/github.com/powerman/check/util.go

65 lines
1.4 KiB
Go

package check
import (
"fmt"
"math"
"path/filepath"
"reflect"
"runtime"
"strings"
)
func callerTestFileLines() (file string, line int, funcLine int) {
pc, file, line, ok := runtime.Caller(0)
myfile := file
for stack := 1; ok && samePackage(myfile, file); stack++ {
pc, file, line, ok = runtime.Caller(stack)
}
if f := runtime.FuncForPC(pc); f != nil {
_, funcLine = f.FileLine(f.Entry())
}
return file, line, funcLine
}
func samePackage(basefile, file string) bool {
return filepath.Dir(basefile) == filepath.Dir(file) && !strings.HasSuffix(file, "_test.go")
}
func callerFuncName(stack int) string {
pc, _, _, _ := runtime.Caller(stack + 1)
return strings.TrimPrefix(funcNameAt(pc), "(*C).")
}
func funcName(f interface{}) string {
return funcNameAt(reflect.ValueOf(f).Pointer())
}
func funcNameAt(pc uintptr) string {
name := "<unknown>"
if f := runtime.FuncForPC(pc); f != nil {
name = f.Name()
if i := strings.LastIndex(name, "/"); i != -1 {
name = name[i+1:]
}
if i := strings.Index(name, "."); i != -1 {
name = name[i+1:]
}
}
return name
}
func format(msg ...interface{}) string {
if len(msg) > 1 {
return fmt.Sprintf(msg[0].(string), msg[1:]...)
}
return fmt.Sprint(msg...)
}
// digits return amount of decimal digits in number.
func digits(number int) int {
if number == 0 {
return 1
}
return int(math.Floor(math.Log10(float64(number)) + 1))
}