How can I avoid IllegalArgumentException of MapSpitter.

[jan.winte...@gmail.com]

Hello all,

I get a IllegalArgumentException if I do this:

    MapSplitter splitter = Splitter//

        .on(";")//

        .withKeyValueSeparator("=");

    Assert.assertNotNull(splitter.split("key=value;key2=value"));

    /* throw Exception */splitter.split("key=value;key2=value=");

It is possible to setup the MapSplitter to get a map like:

{key=value, key2=value=} 

instead of IllegalArgumentException.

Thanks Regards, 

Jan

[Louis Wasserman]

Under what circumstances would an input like that be valid, and not an indication that there's a bug in your input data?

I don't believe there's any way to make that input allowed, just because it's ambiguous input: it could arguably be read as either "key2" mapped to "value=", or "key2=value" mapped to "".

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[Martin Grajcar]

On Wed, Nov 26, 2014 at 3:48 PM, 'Louis Wasserman' via guava-discuss <guava-...@googlegroups.com> wrote:

Under what circumstances would an input like that be valid, and not an indication that there's a bug in your input data?

I don't believe there's any way to make that input allowed, just because it's ambiguous input: it could arguably be read as either "key2" mapped to "value=", or "key2=value" mapped to "".

Maybe, but usually keys contain no special chars while values are unrestricted. See also java.util.Properties:

The key contains all of the characters in the line starting with the first non-white space character and up to, but not including, the first unescaped '=', ':', or white space character other than a line terminator.

Escaping, colon, and whitespace are a different story, but without them, the key ends with the first equal sign. Stopping at the first separator is a common practice, albeit sloppy.

[David Beaumont]

I think that it's not unreasonable to want arbitrary text in values after the first separator.

Many of the common text based key/value formats do this.

Cheers,

    David

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