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Re: String Processing in JavaScript

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On Fri, 31 Aug 2012 15:56:27 -0700, Gene Wirchenko <genew@ocis.net>
wrote:

>Dear JavaScripters:
>
>     I will be passing back long result strings to my Web pages. These
>strings have to be parsed into error codes and form field contents.
>What I am working with looks like
>          <fieldname>:<value length>:<value>\n
>The value is encodeURIComponent()ed.
>
>     The way that I am doing it right now for the first two values on
>a line is to look for a colon (with String.indexOf(), grab what is in
>front of the colon, and then delete up to the colon from the string.
>(I then grab the indicated number of characters and decode for the
>field value and ensure the following character is "\n" and delete up
>to the "\n".)
>
>     I have to delete because of how String.indexOf() works.  It does
>not have a string start point.  Am I better off:
>  1) doing what I am doing,
>  2) keeping track of where I am in the string and have each
>.indexOf() operate on a .substr() of the string,  or
>  3) using some other function I know not of?  (What?)

Perhaps String.split() ?

>     I suppose that another way of doing it would be a regex, but they
>have poor error handling.  I expect to make a lot of errors while
>working this all out, and I prefer to get good error messages rather
>than just a parse failure.
>
>Sincerely,
>
>Gene Wirchenko

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String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-08-31 15:56 -0700
  Re: String Processing in JavaScript Mike Winter <usenet@michael-winter.me.invalid> - 2012-09-01 02:30 +0100
    Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-02 17:56 -0700
  Re: String Processing in JavaScript Jim T. <x@y.z> - 2012-08-31 22:30 -0400
    Re: String Processing in JavaScript "Mel Smith" <med_cutout_syntel@aol.com> - 2012-08-31 21:47 -0600
      Re: String Processing in JavaScript "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2012-09-01 08:51 +0000
        Re: String Processing in JavaScript "Mel Smith" <med_cutout_syntel@aol.com> - 2012-09-01 08:38 -0600
      Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-02 18:04 -0700
        Re: String Processing in JavaScript "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2012-09-03 16:30 +0000
        Re: String Processing in JavaScript Mike Winter <usenet@michael-winter.me.invalid> - 2012-09-03 21:23 +0100
          Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-03 14:26 -0700
  Re: String Processing in JavaScript Stefan Weiss <krewecherl@gmail.com> - 2012-09-03 19:29 +0200
    Re: String Processing in JavaScript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-09-03 21:45 +0200
    Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-03 14:27 -0700
      Re: String Processing in JavaScript Stefan Weiss <krewecherl@gmail.com> - 2012-09-04 00:48 +0200
        Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-03 17:20 -0700
        Re: String Processing in JavaScript Tim Streater <timstreater@greenbee.net> - 2012-09-04 10:06 +0100
          Re: String Processing in JavaScript Ross McKay <au.org.zeta.at.rosko@invalid.invalid> - 2012-09-04 20:02 +1000
          Re: String Processing in JavaScript Gene Wirchenko <genew@ocis.net> - 2012-09-04 08:47 -0700

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