OpenEuphoria

Re: help with storing user input

• Posted by Derek Parnell <ddparnell at bigpond.com> May 17, 2003
• 424 views

----- Original Message -----
From: "Jason Dube" <dubetyrant at hotmail.com>
To: "EUforum" <EUforum at topica.com>
Subject: Re: help with storing user input


>
> -Derek, I was wondering if you could give me an overview of what this
> particular code is doing.
>
>     -- Validate quote marks parameter
>     if     sequence(pQuotes) then
>  if length(pQuotes) = 0 then
>      pQuotes = {{},{},{},{},{}}
>  elsif (length(pQuotes) != 5
>   or
>         atom(pQuotes[1])
>   or
>         atom(pQuotes[2])
>   or
>         atom(pQuotes[3])
>   or
>         length(pQuotes[1]) != length(pQuotes[2])
>   or
>         atom(pQuotes[4])
>   or
>         atom(pQuotes[5])
>   or
>         length(pQuotes[4]) != length(pQuotes[5])
>      )
>  then
>      pQuotes = 0
>  end if
>     end if
>
>     if atom(pQuotes) then
>  if pQuotes = 0 then
>      pQuotes = {"\"'`", "\"'`", "\\~","",""}
>  else
>      pQuotes = {{pQuotes}, {pQuotes},{},{},{}}
>  end if
>     end if

This is just validating and initializing the pQuotes group of data.
 pQuotes[1] and [2] is a pair of character sets. [1] is the start quote and
[2] is the matching end quote. All the characters inside the quotes is
considered to be a word.

 pQuotes[3] is a list of characters that are 'escape' characters to be used
inside quoted strings. For example...

   'abc~'def'

with pQuotes = { "'", "'", '~', ...}

gives the word value as abc'def

pQuotes[4] and [5] are not being used yet.


----------------
cheers,
Derek Parnell