browserlog.coffee

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browserlog.coffee

BrowserLog = exports = module.exports = BrowserLog = (level) -> level = exports[level.toUpperCase()] if “string” is typeof level @level = level or exports.DEBUG return

class BrowserLog
  EMERGENCY: 0
  ALERT: 1
  CRITICAL: 2
  ERROR: 3
  WARNING: 4
  NOTICE: 5
  INFO: 6
  DEBUG: 7

  constructor: (levelStr) ->
    levelStr ?= 'DEBUG'
    @set_level(levelStr)

  set_level: (levelStr) ->
    levelStr = levelStr.toUpperCase()
    if "string" is typeof levelStr
      levelNo = @[levelStr]
    @levelStr = levelStr
    @levelNo = levelNo

console.log(“constructor() levelStr:”,@levelStr,”levelNo:”,@levelNo)

  help: ->
    if console and console.log
      console.info("set log level with:")
      console.info("  noodb.log.set_level('EMERGENCY|ALERT|CRITICAL|ERROR|WARNING|NOTICE|INFO|DEBUG')")
      console.info("currently:",@getLevelStr())

  levelStr2No: (levelStr) ->
    @[levelStr.toUpperCase()]

  getLevelStr: ->
    return @levelNo2Str(@levelNo)

  levelNo2Str: (levelNo) ->
    for k,v of @
      if v is levelNo and k isnt 'levelNo'
        return k
    return 'unknown'

  meth:
    EMERGENCY: console.error
    ALERT: console.error
    CRITICAL: console.error
    ERROR: console.error
    WARNING: console.warn
    NOTICE: console.info
    INFO: console.info
    DEBUG: console.debug

  log: (levelStr, args) ->

¶

console.log “log() levelStr:”, levelStr, ‘@[levelStr]:’, @[levelStr], “levelNo:”, @levelNo
```
    if @levelStr2No(levelStr) <= @levelNo
      meth = @meth[levelStr]
```

the [].slice.call(args) trick converts an Arguments instance into an Array

      newargs = new Array("[" + new Date + "]" + " " + levelStr).concat([].slice.call(args))
      meth.apply(console, newargs)
    return

  emergency: (msg) ->
    @log "EMERGENCY", arguments
    return

  alert: (msg) ->
    @log "ALERT", arguments
    return

  critical: (msg) ->
    @log "CRITICAL", arguments
    return

  error: (msg) ->
    @log "ERROR", arguments
    return

  warning: (msg) ->
    @log "WARNING", arguments
    return

  notice: (msg) ->
    @log "NOTICE", arguments
    return

  info: (msg) ->
    @log "INFO", arguments
    return

  debug: (msg) ->
    @log "DEBUG", arguments
    return

(exports ? this).BrowserLog = BrowserLog