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gitea/modules/log/flags.go
2024-12-20 16:20:51 +00:00

135 lines
3.9 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package log
import (
"sort"
"strings"
"code.gitea.io/gitea/modules/json"
)
// These flags define which text to prefix to each log entry generated
// by the Logger. Bits are or'ed together to control what's printed.
// There is no control over the order they appear (the order listed
// here) or the format they present (as described in the comments).
// The prefix is followed by a colon only if more than time is stated
// is specified. For example, flags Ldate | Ltime
// produce, 2009/01/23 01:23:23 message.
// The standard is:
// 2009/01/23 01:23:23 ...a/logger/c/d.go:23:runtime.Caller() [I]: message
const (
Ldate uint32 = 1 << iota // the date in the local time zone: 2009/01/23
Ltime // the time in the local time zone: 01:23:23
Lmicroseconds // microsecond resolution: 01:23:23.123123. assumes Ltime.
Llongfile // full file name and line number: /a/logger/c/d.go:23
Lshortfile // final file name element and line number: d.go:23. overrides Llongfile
Lfuncname // function name of the caller: runtime.Caller()
Lshortfuncname // last part of the function name
LUTC // if Ldate or Ltime is set, use UTC rather than the local time zone
Llevelinitial // Initial character of the provided level in brackets, eg. [I] for info
Llevel // Provided level in brackets [INFO]
Lgopid // the Goroutine-PID of the context, deprecated and it is always a const value
Lmedfile = Lshortfile | Llongfile // last 20 characters of the filename
LstdFlags = Ldate | Ltime | Lmedfile | Lshortfuncname | Llevelinitial // default
)
const Ldefault = LstdFlags
type Flags struct {
defined bool
flags uint32
}
var flagFromString = map[string]uint32{
"date": Ldate,
"time": Ltime,
"microseconds": Lmicroseconds,
"longfile": Llongfile,
"shortfile": Lshortfile,
"funcname": Lfuncname,
"shortfuncname": Lshortfuncname,
"utc": LUTC,
"levelinitial": Llevelinitial,
"level": Llevel,
"gopid": Lgopid,
"medfile": Lmedfile,
"stdflags": LstdFlags,
}
var flagComboToString = []struct {
flag uint32
name string
}{
// name with more bits comes first
{LstdFlags, "stdflags"},
{Lmedfile, "medfile"},
{Ldate, "date"},
{Ltime, "time"},
{Lmicroseconds, "microseconds"},
{Llongfile, "longfile"},
{Lshortfile, "shortfile"},
{Lfuncname, "funcname"},
{Lshortfuncname, "shortfuncname"},
{LUTC, "utc"},
{Llevelinitial, "levelinitial"},
{Llevel, "level"},
{Lgopid, "gopid"},
}
func (f Flags) Bits() uint32 {
if !f.defined {
return Ldefault
}
return f.flags
}
func (f Flags) String() string {
flags := f.Bits()
var flagNames []string
for _, it := range flagComboToString {
if flags&it.flag == it.flag {
flags &^= it.flag
flagNames = append(flagNames, it.name)
}
}
if len(flagNames) == 0 {
return "none"
}
sort.Strings(flagNames)
return strings.Join(flagNames, ",")
}
func (f *Flags) UnmarshalJSON(bytes []byte) error {
var s string
if err := json.Unmarshal(bytes, &s); err != nil {
return err
}
*f = FlagsFromString(s)
return nil
}
func (f Flags) MarshalJSON() ([]byte, error) {
return []byte(`"` + f.String() + `"`), nil
}
func FlagsFromString(from string, def ...uint32) Flags {
from = strings.TrimSpace(from)
if from == "" && len(def) > 0 {
return Flags{defined: true, flags: def[0]}
}
flags := uint32(0)
for _, flag := range strings.Split(strings.ToLower(from), ",") {
flags |= flagFromString[strings.TrimSpace(flag)]
}
return Flags{defined: true, flags: flags}
}
func FlagsFromBits(flags uint32) Flags {
return Flags{defined: true, flags: flags}
}