Re: escaping a quotation mark from within an NCL string

I think this would be a great thing to have. I'll discuss it with the
developers.

This is where I like Python, because if you need to use double quotes in
a string, you just use single quotes to quote the string. And vice
versa if
you need single quotes:

   str = 'This is a string with "double" quotes'
   str = "This is a string with 'single' quotes"

--Mary

On Mar 11, 2009, at 10:28 AM, Jonathan Vigh wrote:

>
> Hi Mary,
> Okay, thanks for letting me know. I wonder if there'd be any way to
> come up with a verbatim-type function which assigns everything
> inside it
> to a string, e.g.
>
> stringy = verbatim("This, that, "'" ' ', and the other thing)
> print(stringy)
>
> result:
> "This, that, "'" ' ', and the other thing
>
> Thanks,
> Jonathan
>
>
>
>
> Mary Haley wrote:
>> 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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>>
>
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Received on Wed Mar 11 2009 - 11:04:46 MDT