[Javascript] Q on parsing

[TomMallard]

Typo...I had added the test for doubles to the while clause and then removed
it...saw your later email on a solution.

tom
-----Original Message-----
From: javascript-admin at LaTech.edu [mailto:javascript-admin at LaTech.edu]On
Behalf Of Walter Torres
Sent: Tuesday, July 23, 2002 10:34 PM
To: javascript at LaTech.edu
Subject: RE: [Javascript] Q on parsing


Thanks Tom, but...

What this does is...
 - look for a pair of single quotes
 - if it finds them
   - add 2 to the counter
   - insert a single quote in the token string

It does not handle...

    (NOTE: square brackets are mine, not for output)
    ['walter''s birthday']   should return [walter's birthday]

Thanks, but the <formatOptions ( token )> function handles a token of a pair
of single quotes.

I just need to find a way (without using RegExp) to pull out ['walter''s
birthday'] from the input format string.

Thanks for the thought.

Walter

PS: My JS died on this line...

    while (( strFormat.charAt(i) == curChar ) && ( i < intFormatLen ) && )

Can I ask why the extra '&&' at the end of the line?



> -----Original Message-----
> From: javascript-admin at LaTech.edu
> [mailto:javascript-admin at LaTech.edu]On
> Behalf Of TomMallard
> Sent: Tuesday, July 23, 2002 8:35 PM
> To: javascript at LaTech.edu
> Subject: RE: [Javascript] Q on parsing
>
>
> ...
>
> 	var nextChar = '';
>       curChar = strFormat.charAt(i);
> 	if (i < intFormatLen){
>       	nextChar = strFormat.charAt(i+1);
> 	}else{
> 		nextChar = '';
> 	}
>      	while (( strFormat.charAt(i) == curChar ) && ( i <
> intFormatLen ) && )
> 		if (curChar == '\'' && nextChar == '\''){
> 			i = i+2;	//increment the counter
> past the 2 single quotes
> 			token += '\'';	//add the quote to the output
> 		}else{
>          		token += strFormat.charAt(i);
> 		}
> 		i++;
> 	}
> ...
>
>
> tom mallard
> seattle
>
> -----Original Message-----
> From: javascript-admin at LaTech.edu
> [mailto:javascript-admin at LaTech.edu]On
> Behalf Of Walter Torres
> Sent: Tuesday, July 23, 2002 6:18 PM
> To: Walter Torres
> Cc: javascript at yahoogroups.com; javascript at LaTech.edu
> Subject: [Javascript] Q on parsing
>
>
> I am 99% complete on a date format parser.
>
> (will post when this question is answerd!)
>
> The last item is how to parse out a substring bracketed by
> single quotes.
>
> i.e.:
>
> I have this var...
>
>     var format = "EEEE, MMMM dd, yyyy ''G'' 'at' hh:mm:ss a z" ;
>
> I can walk down this string and pull out "tokens" (same
> character of 1 or
> more in length: ex: EEEE, hh, z )
>
> I do it like this...
>
>    while ( i < intFormatLen )
>    {
>       var token = "";
>
>       curChar = strFormat.charAt(i);
>
>       while (( strFormat.charAt(i) == curChar ) && ( i <
> intFormatLen ))
>          token += strFormat.charAt(i++);
>
>       result += formatOptions ( token );
>    }
>
>
> Now, a double single quote (2 in a row) needs to be grapped
> and passed on
> as a single token. but not 3 in a row, the third should be part of the
> next token. It needs to grab 2 adjacent at a time.
>
> If it finds one single quote, it needs to grab all characters until it
> sees and other single quote. Yes, it needs to be able to handle an
> embedded pair of single quotes.
>
> So, if I have this...
>
>      EEEE 'is walter''s birthday'
>
> This should give me 3 tokens
>   1) EEEE
>   2) a SPACE
>   3) is walter's birthday
>
> I can grab all but #3! :(
>
> I have been banging my head for 3 days on this one, I just
> can't see it.
>
> Help?
>
> Walter
>
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