Re: [Boost-users] Program Options of Filesystem Path's - confused!

Daniel James wrote:

On 14 August 2010 06:35, Vladimir Prus wrote:

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John Dlugosz wrote:

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A little experimenting tells me that it doesn't like having spaces in the string! Note that the quotes are understood by the run-time library that calls main, so the whole string (without surrounding quotes) is present in one element of argv. It works just fine when taking the argument as a string.

This seems like a bug, somewhere.

Try:

lexical_castfs::wpath(fs::wpath("the path that fails"))

If that fails, it means operator>> is mishandling spaces in paths.

If this filesystem v2 or v3? In filesystem v3, the stream extractor uses whitespace as a separator (correctly IMO), so filenames with spaces have to be quoted. I suspect the issue is that the filename has already have been unquoted by the shell.

Your test will work, since the filename is quoted as it's written to the stream, and then unquoted as it's extracted. But you'll see the error with:

lexical_castfs::wpath("the path that fails")

Does program options ever do that?

Yes, of course. It takes string from command line, and does lexical_cast on it. So, it seems like the only approach is to specialize lexical_cast for wpath/path? - Volodya