Helpful script for watching logs even if you close/restart app on Simulator.

I think this will be helpful to others.

Intro

• Building from ti build or Titanium Studio starts the logs..
• I will often close the app on the simulator make an js file change then reopen the app on the simulator (which will usually pick up the new change).

Problem

Closing & reopening the app on the simulator breaks the stdn link for the build in logger.py.

Solution

This script will separate the log tailing from the app execution. You can close the app & restart it and the tail -f *.log will just pick off where it was last

log (php)

#!/usr/bin/env php
 
<?php
$path = '~/Library/Application\ Support/iPhone\ Simulator';
$sdk = $argv[1] ?: '7.0.3';
$ti = new SimpleXMLElement(file_get_contents('tiapp.xml'));
$ti->registerXPathNamespace('ti', 'http://ti.appcelerator.org');
 
$ti = $ti->xpath('//ti:app');
$app_name = (string)$ti[0]->name;
 
$path = "$path/$sdk/Applications";
 
$path = str_replace(' ', '\ ', 
    dirname(`find $path -name $app_name.app`)
);
 
$path = "$path/Documents/*.log";
 
passthru("tail -f $path | ./logger");

logger (php)

#!/usr/bin/env php
 
<?php
 
//maps the different flag levels to a colors
//TODO make $flags a constant
function map($flag){
 
    $flags = array(
     'ERROR' => "31;01m", //red
     'INFO' => "32;01m", //green
     'WARNING' => "33;01m", //yellow
     'DEBUG' => "34;01m", //blue
    );
 
    return $flags[$flag];
}
 
// $COL_MAGENTA=$ESC_SEQ"35;01m"
// $COL_CYAN=$ESC_SEQ"36;01m"
 
//format the colored text
function color($flag, $txt){
    $col = map($flag);
    $esc = "\x1b[";
    $reset = $esc."39;49;00m";
    print($esc.$col.$flag.$reset.$txt);
 
}
 
//check for flag
$rgx = '/\[(\w+)\](.+)$/';
$formatter = function($m){
    $flag = $m[1];
    $text = $m[2];
    color( $flag, "\n$text\n\n" );
};
 
//stay open while stdin is going..
while($f = fgets(STDIN)){
   preg_replace_callback($rgx, $formatter, $f);
}

Result

Side Note

It wouldn't be too hard to add a node command to titanium like watch to hit logger.py

I'm not a python developer so I made these two scripts (really quickly. Feal free to give me improvements).