switch to go vendoring

vendor/github.com/gookit/goutil/sysutil/stack.go

@@ -0,0 +1,64 @@
+package sysutil
+
+import (
+	"runtime"
+	"strconv"
+)
+
+// CallerInfo struct
+type CallerInfo struct {
+	PC   uintptr
+	Fc   *runtime.Func
+	File string
+	Line int
+}
+
+// String convert
+func (ci *CallerInfo) String() string {
+	return ci.File + ":" + strconv.Itoa(ci.Line)
+}
+
+// CallersInfos returns an array of the CallerInfo.
+//
+// Usage:
+//
+//		cs := sysutil.CallersInfos(3, 2)
+//	 for _, ci := range cs {
+//			fc := runtime.FuncForPC(pc)
+//			// maybe need check fc = nil
+//			fnName = fc.Name()
+//		}
+func CallersInfos(skip, num int, filters ...func(file string, fc *runtime.Func) bool) []*CallerInfo {
+	filterLn := len(filters)
+	callers := make([]*CallerInfo, 0, num)
+	for i := skip; i < skip+num; i++ {
+		pc, file, line, ok := runtime.Caller(i)
+		if !ok {
+			// The breaks below failed to terminate the loop, and we ran off the
+			// end of the call stack.
+			break
+		}
+
+		fc := runtime.FuncForPC(pc)
+		if fc == nil {
+			continue
+		}
+
+		if filterLn > 0 && filters[0] != nil {
+			// filter - return false for skip
+			if !filters[0](file, fc) {
+				continue
+			}
+		}
+
+		// collecting
+		callers = append(callers, &CallerInfo{
+			PC:   pc,
+			Fc:   fc,
+			File: file,
+			Line: line,
+		})
+	}
+
+	return callers
+}