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From Dylan Farre <>
Subject I want to send (explicit) quiet output to the screen and (automatic) verbose output to a log file
Date Fri, 20 Feb 2009 11:10:20 GMT
I am writing an installation program using Ant. Currently I am running my
program in quiet mode. This way, I can send user information requests
[input] to the screen as well as [echo] specific information that I want the
user to see. I can also send other debugging and logging information to
various log files.

This is all easy. I have written a couple of simple macros, which makes it
even easier and gives me more control.

I want to know if there is an easy and automatic way to at the same time as
the above, send the automatically generated verbose information to a log
file, without sending it to the screen. For example a replace task generates
some verbose information (and a summary), that I want sent to the log file,
but not the screen.

I could manually echo some info to the log, e.g. the token and the value for
example. I have to problems with this:
1) It is manual, not automatic
2) I don't have access to that internal verbose information, for example the
replace summary. [replace] Replaced 6 occurrences in 0 files.

I know that you can override the logger. I have looked for a logger that
does what I want, but not found anything yet. Can anyone recommend one and
some tips or examples of how to get it to do what I want it too? It seems
like Log4J could be setup to do this, but it looks a bit complicated.

I am also already using AntXtras for things like variables and looping
tasks. If you are not using AntXtras, yet, I highly recommend this, it fills
a lot of the gaps in Ant and is really easy to use. I see AntXtras has some
special support for Log4J, but I have not looked into this yet. Perhaps
someone can give me some pointers on how to use AntXtras to do the type of
logging that I need.

I don't have any Java experience, so I am not in a position to be able to do
my own implementation.

I would even settle for a script internal task to manually switch between
verbose logging to file and quiet logging to the screen, as and when I want
to switch.

Any help will be much appreciated.
Best Regards

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