Stripping Returns

[dunbarx at aol.com]

Jacque.


The text is truncated, not simply not displayed:



on mouseUp
   put "1234567890 " into temp
   repeat 10000
      put temp after accum
   end repeat
   put accum into fld 1 -- 110,000 chars
   answer the length of fld 1
end mouseUp


You get 65,533.


Not sure where the last two chars went.


Craig


-----Original Message-----
From: J. Landman Gay <jacque at hyperactivesw.com>
To: How to use LiveCode <use-livecode at lists.runrev.com>
Sent: Wed, Nov 19, 2014 11:15 am
Subject: Re: Stripping Returns


Reading a file always gives you all the content regardless of the size, up to 
memory limits. Displaying a long line of text will truncate it after 62k but as 
I understand it, the truncation is visual only.  If a script asks for the line 
it is all returned. (Better check that, but that was my understanding.) 

But the restriction only applies to lines that don't wrap, such as those in list 
fields.  If the text contains spaces or other delimiting tokens, the text will 
wrap and the restriction is lifted. 

When reading a file from disk as text, line endings will be converted to the 
ones used by the current OS. Text read as binary will not be altered.  


On November 19, 2014 4:44:53 AM CST, JB <sundown at pacifier.com> wrote:
>Thank you.  The logic is simple enough.
>Even so it should be noted in the read
>file that reading to the end of a file will
>fail to provide you the info if the file has
>more than 65,535 characters.
>
>John Balgenorth
>
>
>On Nov 18, 2014, at 8:35 PM, dunbarx at aol.com wrote:
>
>> Hi.
>> 
>> 
>> Did you try this? Simple to do in a little test card. The chars
>beyond 65535 will be lost. Do you see what the likely answer to your
>second question is? Note that reading from a file does not anticipate
>what you will do with the data. Variables have no limits, within
>memory, of course, but what you do with that data may hit a wall.
>> 
>> 
>> Craig Newman
>> 
>> 
>> 
>> -----Original Message-----
>> From: JB <sundown at pacifier.com>
>> To: How to use LiveCode <use-livecode at lists.runrev.com>
>> Sent: Tue, Nov 18, 2014 9:48 pm
>> Subject: Stripping Returns
>> 
>> 
>> A field has a limit on the amount of characters
>> you can have on each line.  What if I put the
>> text of a field in a variable and it has 500,000
>> characters.  Then I strip all of the returns that
>> are in the field.  Does that leave only one line
>> with 500,000 characters?  That exceeds the
>> amount of characters allowed per line so what
>> happens to the text in the variable?
>> 
>> Another similar question is what happens if I am
>> reading a file until the end and it is very large.  Will
>> returns be automatically placed if needed so the line
>> limit got characters is not exceeded or do I need to
>> read large files in sections that are less than the line
>> limit for characters?
>> 
>> John Balgenorth
>> 
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-- 
Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com

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