Re: escaping a quotation mark from within an NCL string

Jonathan,

I'm afraid there's no way to this other than using the special "quote"
variable you set up.

Just today I was asking about being able to use single ticks to
represent characters, like:

    quote = '"'

so that you at least don't need to to the "inttochar" thing. It's not
a huge priority; just something we were discussing.

I think part of the problem is that we don't have any characters to
use as an escape
character. The "\" is a valid character in NCL, so it can't be used.

I'll have to let Dave Brown weigh in further here.

--Mary

On Mar 10, 2009, at 6:31 PM, Jonathan Vigh wrote:

>
> Greetings,
> Hopefully this is an easy question . . . I'm wondering if it is
> possible to escape a quotation mark within a string in NCL, similar to
> what is done for the shell in command line options (or calls using
> systemfunc) using "\" or single quote marks. The reason I'd like to do
> this is that I'm writing NCL code to dynamically generate more NCL
> code,
> and I'd like to be able to put a quotation mark in the resulting
> string.
>
> Right now, one solution is to add a quotation mark character to the
> string every place I want a quotation mark to appear in the resulting
> output string, otherwise NCL gets confused and interprets the desired
> quotation mark as terminating the current string. A really simple
> example is:
>
> quote = inttochar(34)
>
> module_contents = " fin = addfile(processed_data_directory +
> processed_filelist_at_array(istorm), "+quote+"r"+quote+") ; open input
> file" + cr \
>
> which will generate the following line of code in the module:
>
> fin = addfile(processed_data_directory +
> processed_filelist_at_array(istorm), "r") ; open input file
>
> Obviously, this could get really tricky for a complicated expression
> with many quotes. So I'm wondering if there is a way to escape the
> quotation mark within an NCL string? Enclosing the whole thing in
> single
> quotes doesn't seem to work.
>
> Thanks,
> Jonathan
>
>
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Received on Tue Mar 10 2009 - 21:05:08 MDT