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Posted to user@commons.apache.org by Ed Young <ej...@summitbid.com> on 2009/02/17 21:55:21 UTC
commons.cli and repeating option values
What is the best way to support a command line option that occurs multiple
times in a single command line invocation?
(I did some web searching with no ideal solution to this, but I appologize
if this is a recurring issue on this list. I just subscribed...)
For example, if I want to set the debug level for several different classes
like this:
myProgram -d com.mycompany.etrace.filters.udp.UdpPacketDistributor=TRACE
-d com.mycompany.etrace.filters.udp.SomOtherClass=DEBUG
I have used the OptionBuilder, but it doesn't seem to work the way I expect:
CommandLineParser parser = new BasicParser();
Options options = new Options();
Option debug = OptionBuilder.withArgName("className=level")
.hasArgs()
.withValueSeparator()
.withDescription("debug level")
.create('d');
options.addOption(debug);
Then when I parse the command line:
if (commandLine.hasOption('d'))
{
String[] debugOptArray = commandLine.getOptionValues('d');
for (String str: debugOptArray)
{
LOGGER.debug("str: " + str);
}
}
I get
2009-02-17 13:28:33,985 DEBUG EtraceCommand.java - str:
com.comcast.etrace.filters.udp.UdpPacketDistributor
2009-02-17 13:28:34,782 DEBUG EtraceCommand.java - str: TRACE
2009-02-17 13:28:36,095 DEBUG EtraceCommand.java - str:
com.comcast.etrace.filters.udp.SomOtherClass
2009-02-17 13:28:37,454 DEBUG EtraceCommand.java - str: DEBUG
2009-02-17 13:28:39,876 DEBUG EtraceCommand.java - debug string:
com.comcast.etrace.filters.udp.UdpPacketDistributor
It's not deterministic as far as where in the debugOptArray the className is
and the level are, respectively.
Is there a way to extract all the "className" elements and the associated
"level" elements. A sort of Map interface?
Thanks.
--
- Ed
Re: commons.cli and repeating option values
Posted by Russel Winder <ru...@concertant.com>.
Ed,
Can you say which version of Commons CLI you are using.
The problem here is I suspect that you are trying to work in the area
where Commons CLI 1.0 behaves one way, Commons CLI 1.1 behaves a
different way with irritating bugs and Commons CLI 1.2 is the one you
need (but isn't released yet).
On Tue, 2009-02-17 at 13:55 -0700, Ed Young wrote:
> What is the best way to support a command line option that occurs multiple
> times in a single command line invocation?
>
> (I did some web searching with no ideal solution to this, but I appologize
> if this is a recurring issue on this list. I just subscribed...)
>
> For example, if I want to set the debug level for several different classes
> like this:
> myProgram -d com.mycompany.etrace.filters.udp.UdpPacketDistributor=TRACE
> -d com.mycompany.etrace.filters.udp.SomOtherClass=DEBUG
>
> I have used the OptionBuilder, but it doesn't seem to work the way I expect:
>
> CommandLineParser parser = new BasicParser();
> Options options = new Options();
>
> Option debug = OptionBuilder.withArgName("className=level")
> .hasArgs()
> .withValueSeparator()
> .withDescription("debug level")
> .create('d');
> options.addOption(debug);
>
> Then when I parse the command line:
>
> if (commandLine.hasOption('d'))
> {
> String[] debugOptArray = commandLine.getOptionValues('d');
> for (String str: debugOptArray)
> {
> LOGGER.debug("str: " + str);
> }
> }
>
> I get
> 2009-02-17 13:28:33,985 DEBUG EtraceCommand.java - str:
> com.comcast.etrace.filters.udp.UdpPacketDistributor
> 2009-02-17 13:28:34,782 DEBUG EtraceCommand.java - str: TRACE
> 2009-02-17 13:28:36,095 DEBUG EtraceCommand.java - str:
> com.comcast.etrace.filters.udp.SomOtherClass
> 2009-02-17 13:28:37,454 DEBUG EtraceCommand.java - str: DEBUG
> 2009-02-17 13:28:39,876 DEBUG EtraceCommand.java - debug string:
> com.comcast.etrace.filters.udp.UdpPacketDistributor
>
> It's not deterministic as far as where in the debugOptArray the className is
> and the level are, respectively.
>
> Is there a way to extract all the "className" elements and the associated
> "level" elements. A sort of Map interface?
>
> Thanks.
>
--
Russel.
====================================================
Dr Russel Winder Partner
Concertant LLP t: +44 20 7585 2200, +44 20 7193 9203
41 Buckmaster Road, f: +44 8700 516 084
London SW11 1EN, UK. m: +44 7770 465 077