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/*
log levels:
0,1,2,3
verbose,info,warn,error
Default setting for logs is "info"
Default setting to show is "info"
Possible values of level/loglevel:
verbose,info,warn,error,win,silent
silent quiets everything
*/
module.exports = log
var sys = require("sys")
, npm = require("../../npm")
var doColor
try {
var stdio = require("stdio")
doColor = stdio.isStderrATTY()
} catch (ex) {
doColor = true
}
function colorize (msg, color) {
if (!msg) return ""
if (!doColor) return msg
return "\033["+color+"m"+msg+"\033[0m"
}
var l = -1
, LEVEL = { silly : l++
, verbose : l++
, info : l++
, WARN : l++
, ERROR : l++
, win : 0x15AAC5
, silent : 0xDECAFBAD
}
, COLOR = {}
, SHOWLEVEL
Object.keys(LEVEL).forEach(function (l) {
LEVEL[LEVEL[l]] = l
LEVEL[l.toLowerCase()] = LEVEL[l]
if (l === "silent") return
log[l] = log[l.toLowerCase()] =
function (msg, pref, cb) { return log(msg, pref, l, cb) }
})
// COLOR[LEVEL.verbose] = '0'
COLOR[LEVEL.info] = 32
COLOR[LEVEL.warn] = 33
COLOR[LEVEL.error] = 31
for (var c in COLOR) COLOR[LEVEL[c]] = COLOR[c]
COLOR.npm = 37
COLOR.pref = 35
var logBuffer = []
, ini = require("./ini")
, waitForConfig
log.waitForConfig = function () { waitForConfig = true }
function log (msg, pref, level, cb) {
if (typeof level === "function") cb = level, level = null
var show
if (typeof SHOWLEVEL !== "undefined") {
show = SHOWLEVEL
if (show === LEVEL.silent || show === "silent") {
return cb && cb()
}
} else {
show = npm.config.get("loglevel")
if (!show) return logBuffer.push(arguments)
show = show.split(",")[0]
if (!isNaN(show)) show = +show
else if (!LEVEL.hasOwnProperty(show)) {
sys.error("Invalid loglevel config: "+JSON.stringify(show))
show = "info"
}
if (isNaN(show)) show = LEVEL[show]
else show = +show
}
if (level == null) level = LEVEL.info
if (isNaN(level)) level = LEVEL[level]
else level = +level
if (typeof msg !== "string" && !(msg instanceof Error)) {
msg = sys.inspect(msg, 0, 4)
}
if (msg instanceof Error) {
msg = msg.stack || msg.toString()
level = LEVEL.error
}
if (!ini.resolved && waitForConfig) {
return logBuffer.push([msg, pref, level])
}
if (logBuffer.length && !logBuffer.discharging) {
logBuffer.push([msg, pref, level])
logBuffer.discharging = true
logBuffer.forEach(function (l) { log.apply(null, l) })
logBuffer.length = 0
delete logBuffer.discharging
return
}
SHOWLEVEL = show
if (!isFinite(level) || level < show) return cb && cb()
// console.error("level, showlevel, show", level, show, (level >= show))
pref = colorize("npm", COLOR.npm)
+ (COLOR[level] ? " "+colorize(LEVEL[level], COLOR[level]) : "")
+ (pref && COLOR.pref ? " " + colorize(pref, COLOR.pref) : "")
if (msg.indexOf("\n") !== -1) {
msg = msg.split(/\n/).join("\n"+pref+" ")
}
msg = pref+" "+msg
sys.error(msg)
cb && cb()
}
log.er = function (cb, msg) {
if (!msg) throw new Error(
"Why bother logging it if you're not going to print a message?")
return function (er) {
if (er) log.error(msg)
cb.apply(this, arguments)
}
}
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