Fairly new to node-webkit, so I'm still figuring out how everything works...
I have some logging in my app:
console.log("Name: %s", this.name);
It outputs to the browser console as expected:
Name: Foo
But in the invoking terminal, instead I get some fairly ugly output:
[7781:1115/085317:INFO:CONSOLE(43)] ""Name: %s" "Foo"", source: /file/path/to/test.js (43)
The numerical output within the brackets might be useful, but I don't know how to interpret it. The source info is fine. But I'd really like the printed string to be printf-style formatted, rather than shown as individual arguments.
So, is there a way to get stdout to be formatted either differently, or to call a custom output function of some sort so I can output the information I want?
I eventually gave up, and wrapped console.log() with:
log = function() {
console.log(util.format.apply(this, arguments));
}
The actual terminal console output is done via RenderFrameHostImpl::OnAddMessageToConsole in chromium, with the prefix info being generated via LogMessage::Init() in the format:
[pid:MMDD/HHMMSS:severity:filename(line)]
The javascript console.log is implemented in console.cc, via the Log() function. The printf style formatting is being done at a higher level, so that by the time the Log() function (or similar) are called, they are only passed a single string.
It's not a satisfying answer, but a tolerable workaround.