package fs import (	"fmt"	"strings" 	"github.com/pkg/errors") // DumpFlags describes the Dump options in forcetype DumpFlags int // DumpFlags definitionsconst (	DumpHeaders DumpFlags = 1 << iota	DumpBodies	DumpRequests	DumpResponses	DumpAuth	DumpFilters	DumpGoRoutines	DumpOpenFiles) var dumpFlags = []struct {	flag DumpFlags	name string}{	{DumpHeaders, "headers"},	{DumpBodies, "bodies"},	{DumpRequests, "requests"},	{DumpResponses, "responses"},	{DumpAuth, "auth"},	{DumpFilters, "filters"},	{DumpGoRoutines, "goroutines"},	{DumpOpenFiles, "openfiles"},} // DumpFlagsList is a list of dump flags used in the helpvar DumpFlagsList string func init() {	// calculate the dump flags list	var out []string	for _, info := range dumpFlags {		out = append(out, info.name)	}	DumpFlagsList = strings.Join(out, ",")} // String turns a DumpFlags into a stringfunc (f DumpFlags) String() string {	var out []string	for _, info := range dumpFlags {		if f&info.flag != 0 {			out = append(out, info.name)			f &^= info.flag		}	}	if f != 0 {		out = append(out, fmt.Sprintf("Unknown-0x%X", int(f)))	}	return strings.Join(out, ",")} // Set a DumpFlags as a comma separated list of flagsfunc (f *DumpFlags) Set(s string) error {	var flags DumpFlags	parts := strings.Split(s, ",")	for _, part := range parts {		found := false		part = strings.ToLower(strings.TrimSpace(part))		if part == "" {			continue		}		for _, info := range dumpFlags {			if part == info.name {				found = true				flags |= info.flag			}		}		if !found {			return errors.Errorf("Unknown dump flag %q", part)		}	}	*f = flags	return nil} // Type of the valuefunc (f *DumpFlags) Type() string {	return "DumpFlags"} // UnmarshalJSON makes sure the value can be parsed as a string or integer in JSONfunc (f *DumpFlags) UnmarshalJSON(in []byte) error {	return UnmarshalJSONFlag(in, f, func(i int64) error {		*f = (DumpFlags)(i)		return nil	})}