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Vendor libs
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Wim
278
vendor/github.com/alecthomas/log4go/wrapper.go
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vendored
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278
vendor/github.com/alecthomas/log4go/wrapper.go
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vendored
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// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>. All rights reserved.
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package log4go
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import (
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"errors"
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"fmt"
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"os"
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"strings"
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)
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var (
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Global Logger
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)
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func init() {
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Global = NewDefaultLogger(DEBUG)
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}
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// Wrapper for (*Logger).LoadConfiguration
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func LoadConfiguration(filename string) {
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Global.LoadConfiguration(filename)
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}
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// Wrapper for (*Logger).AddFilter
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func AddFilter(name string, lvl Level, writer LogWriter) {
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Global.AddFilter(name, lvl, writer)
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}
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// Wrapper for (*Logger).Close (closes and removes all logwriters)
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func Close() {
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Global.Close()
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}
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func Crash(args ...interface{}) {
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if len(args) > 0 {
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Global.intLogf(CRITICAL, strings.Repeat(" %v", len(args))[1:], args...)
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}
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panic(args)
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}
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// Logs the given message and crashes the program
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func Crashf(format string, args ...interface{}) {
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Global.intLogf(CRITICAL, format, args...)
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Global.Close() // so that hopefully the messages get logged
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panic(fmt.Sprintf(format, args...))
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}
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// Compatibility with `log`
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func Exit(args ...interface{}) {
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if len(args) > 0 {
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Global.intLogf(ERROR, strings.Repeat(" %v", len(args))[1:], args...)
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}
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Global.Close() // so that hopefully the messages get logged
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os.Exit(0)
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}
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// Compatibility with `log`
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func Exitf(format string, args ...interface{}) {
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Global.intLogf(ERROR, format, args...)
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Global.Close() // so that hopefully the messages get logged
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os.Exit(0)
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}
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// Compatibility with `log`
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func Stderr(args ...interface{}) {
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if len(args) > 0 {
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Global.intLogf(ERROR, strings.Repeat(" %v", len(args))[1:], args...)
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}
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}
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// Compatibility with `log`
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func Stderrf(format string, args ...interface{}) {
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Global.intLogf(ERROR, format, args...)
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}
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// Compatibility with `log`
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func Stdout(args ...interface{}) {
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if len(args) > 0 {
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Global.intLogf(INFO, strings.Repeat(" %v", len(args))[1:], args...)
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}
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}
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// Compatibility with `log`
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func Stdoutf(format string, args ...interface{}) {
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Global.intLogf(INFO, format, args...)
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}
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// Send a log message manually
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// Wrapper for (*Logger).Log
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func Log(lvl Level, source, message string) {
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Global.Log(lvl, source, message)
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}
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// Send a formatted log message easily
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// Wrapper for (*Logger).Logf
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func Logf(lvl Level, format string, args ...interface{}) {
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Global.intLogf(lvl, format, args...)
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}
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// Send a closure log message
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// Wrapper for (*Logger).Logc
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func Logc(lvl Level, closure func() string) {
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Global.intLogc(lvl, closure)
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}
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// Utility for finest log messages (see Debug() for parameter explanation)
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// Wrapper for (*Logger).Finest
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func Finest(arg0 interface{}, args ...interface{}) {
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const (
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lvl = FINEST
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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case func() string:
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// Log the closure (no other arguments used)
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Global.intLogc(lvl, first)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
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}
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}
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// Utility for fine log messages (see Debug() for parameter explanation)
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// Wrapper for (*Logger).Fine
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func Fine(arg0 interface{}, args ...interface{}) {
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const (
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lvl = FINE
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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case func() string:
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// Log the closure (no other arguments used)
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Global.intLogc(lvl, first)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
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}
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}
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// Utility for debug log messages
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// When given a string as the first argument, this behaves like Logf but with the DEBUG log level (e.g. the first argument is interpreted as a format for the latter arguments)
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// When given a closure of type func()string, this logs the string returned by the closure iff it will be logged. The closure runs at most one time.
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// When given anything else, the log message will be each of the arguments formatted with %v and separated by spaces (ala Sprint).
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// Wrapper for (*Logger).Debug
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func Debug(arg0 interface{}, args ...interface{}) {
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const (
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lvl = DEBUG
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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case func() string:
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// Log the closure (no other arguments used)
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Global.intLogc(lvl, first)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
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}
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}
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// Utility for trace log messages (see Debug() for parameter explanation)
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// Wrapper for (*Logger).Trace
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func Trace(arg0 interface{}, args ...interface{}) {
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const (
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lvl = TRACE
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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case func() string:
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// Log the closure (no other arguments used)
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Global.intLogc(lvl, first)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
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}
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}
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// Utility for info log messages (see Debug() for parameter explanation)
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// Wrapper for (*Logger).Info
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func Info(arg0 interface{}, args ...interface{}) {
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const (
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lvl = INFO
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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case func() string:
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// Log the closure (no other arguments used)
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Global.intLogc(lvl, first)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
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}
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}
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// Utility for warn log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
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// These functions will execute a closure exactly once, to build the error message for the return
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// Wrapper for (*Logger).Warn
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func Warn(arg0 interface{}, args ...interface{}) error {
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const (
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lvl = WARNING
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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return errors.New(fmt.Sprintf(first, args...))
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case func() string:
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// Log the closure (no other arguments used)
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str := first()
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Global.intLogf(lvl, "%s", str)
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return errors.New(str)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
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return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
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}
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return nil
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}
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// Utility for error log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
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// These functions will execute a closure exactly once, to build the error message for the return
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// Wrapper for (*Logger).Error
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func Error(arg0 interface{}, args ...interface{}) error {
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const (
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lvl = ERROR
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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return errors.New(fmt.Sprintf(first, args...))
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case func() string:
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// Log the closure (no other arguments used)
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str := first()
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Global.intLogf(lvl, "%s", str)
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return errors.New(str)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
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return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
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}
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return nil
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}
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// Utility for critical log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
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// These functions will execute a closure exactly once, to build the error message for the return
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// Wrapper for (*Logger).Critical
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func Critical(arg0 interface{}, args ...interface{}) error {
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const (
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lvl = CRITICAL
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)
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switch first := arg0.(type) {
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case string:
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// Use the string as a format string
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Global.intLogf(lvl, first, args...)
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return errors.New(fmt.Sprintf(first, args...))
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case func() string:
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// Log the closure (no other arguments used)
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str := first()
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Global.intLogf(lvl, "%s", str)
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return errors.New(str)
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default:
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// Build a format string so that it will be similar to Sprint
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Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
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return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
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}
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return nil
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}
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