Hello Adalbert,
> Am 14.03.2017 um 15:36 schrieb [email protected]:
>
> Hi there,
>
> I'm trying to implement a command line parser using Apache Commons CLI v. 1.2
> (unfortunately I am forced to use that version). The syntax to be accepted is
> quite simple:
>
> MyProg [ -x path[:path]... ] [ file1 ... ]
>
> Option '-x' should accept a search path like sequence of directories
> (separated by ':') optionally followed by zero or more file names. My code
> looks as follows:
>
> Option dbPath = OptionBuilder.withLongOpt("db_path")
> .withDescription("DB search path")
> .hasArgs()
> .withValueSeparator(':')
> .withArgName("Path[:Path]...")
> .create('x');
> Options opts = new Options();
> opts.addOption(dbPath);
>
> String[] args = new String[] { "-x", "path1:path2", "file1", "file2" };
>
> CommandLineParser parser = new PosixParser();
> CommandLine cmdLine = null;
> try {
> cmdLine = parser.parse(opts, args);
> } catch (ParseException ex) {
> System.out.println("Syntax error: " + ex.getMessage());
> return;
> }
> if (cmdLine.hasOption('x')) {
> for (String path : cmdLine.getOptionValues('x'))
> System.out.println("path: " + path);
> }
> for (Object file : cmdLine.getArgList()) {
> System.out.println("file: " + file);
> }
>
> Surprisingly this doesn't function as expected. This is the output I get:
>
> path: path1
> path: path2
> path: file1
> path: file2
>
> Not only the two '-x' option values ('path1', 'path2') but also the file
> arguments are returned when the getOptionValues('x') function is called. No
> matter which parser class I use (BasicParser, GnuParser or PosixParser), the
> result is always the same.
>
> What am I doing wrong?
I think what you’re trying to achieve is currently not possible with CLI.
Here’s the JavaDoc of withValueSeparator(char):
Option opt = OptionBuilder.withValueSeparator('=')
.create('D');
String args = "-Dkey=value";
CommandLine line = parser.parse(args);
String propertyName = opt.getValue(0); // will be "key"
String propertyValue = opt.getValue(1); // will be "value"
So the value separator is used to define key-value pair options.
Benedikt
>
> Adalbert.
>
