appending logfile

[John Esak]

Ooppps! 

I knew I would screw it up with just listening... On the PDA...

The test for whether the open() worked in my code snippet obviously belongs
"below" the line that actually does the open()  :-)

Sprry

> Then: declare h_o(8,.0), h_wl(5,.0), h_c(8,.0)
Then: h_o=open("/path/to/mylogfile.txt","rwct")   no truncate on open
  if: h_o lt "0"
Then: errorbox "Pen failed.";  return  or go somewhere else...
Then: h_w=writeline(h_o,aa)
....
   Gosub this   h_w=writeline(h_o,aa) whenever you need it...
...
Then: h_c=close(h_o)
 

John
 

> -----Original Message-----
> From: filepro-list-bounces+john=valar.com at lists.celestial.com 
> [mailto:filepro-list-bounces+john=valar.com at lists.celestial.co
m] On Behalf Of John Esak
> Sent: Thursday, February 26, 2009 7:04 PM
> To: 'Scott Nelson'; 'filePro Mailing List'
> Subject: RE: appending logfile
> 
> Scott,
> I'm writing from my PDA so this could be a little strange...
> 
> Anyway, sounds like you are using LOGTEXT or something... My 
> suggestion is
> to just open a file with open() and writeline() to it 
> yourself until your
> done.  Then, remember to close() it.  Be sure that the open() 
> does not have
> the "truncate" flag and the next time any process opens the 
> file it will see
> there what used to be there unless something else affects or 
> it or the open
> you use has the truncate flag....
> 
> Then: declare h_o(8,.0), h_wl(5,.0), h_c(8,.0)
>   if: h_o lt "0"
> Then: errorbox "Pen failed.";  return  or go somewhere else...
> Then: h_o=open("/path/to/mylogfile.txt","rwct")   no truncate on open
> Then: h_w=writeline(h_o,aa)
> ....
> Then: h_w=writeline(h_o,aa)
> ...
> 
> When done:
> 
> Then: h_c=close(h_o)
> 
> 
> aa is the variable holding the line you want to post....
> 
> h_o=open("/path/to/mylogfile.txt","rwct0")   Truncates when opening
> 
> The variables h_o, h_wl, H_c... Could actually all essentially be any
> variable. They are the handle which the other file I/O 
> functions use to read
> and write to "opened" files.  You can test them for errors that were
> returned... Learn how many characters were read or written by 
> a command...
> Among toher things.  The functions are all pretty simple, and 
> work like C
> almost to a T.
> 
> Don't know if you use the file I/O stuff or not, so I don't 
> know how much to
> put here. If you don't, they will enhance your filePro abilities
> tremendously.  I can see that the built-in LOGTEXT command is 
> simple enough,
> but it is obviously very limited, not only in the way you 
> think it may be
> but lots of other ways.  The readline/writeline functions 
> allow you very
> complete "text" functionality.  If you want to read and write 
> chunks of data
> without automaticlly adding a newline like writeline() or 
> stop at the first
> encounterd newline like readline() does, then you would want 
> read() and
> write() both of which can go up to 32,768 characters. (or is 
> it 32,767??? I
> never really tested this... I think it is 1 relative so 
> 32,768 probably.)
> 
> Anyway, this might not be the response you wanted... Good luck.
> 
> John
> 
>  
> 
> > -----Original Message-----
> > From: filepro-list-bounces+john=valar.com at lists.celestial.com 
> > [mailto:filepro-list-bounces+john=valar.com at lists.celestial.co
> m] On Behalf Of Scott Nelson
> > Sent: Thursday, February 26, 2009 6:34 PM
> > To: filePro Mailing List
> > Subject: appending logfile
> > 
> > When setting a logfile in a processing table, each time the program 
> > runs, the logfile is cleared and filled only from that 
> > process.  I can 
> > not seem to find a setting to append to an existing logfile, 
> > unless it 
> > is the default one.
> > 
> > Can this be done?
> > 
> > Scott
> > 
> > _______________________________________________
> > Filepro-list mailing list
> > Filepro-list at lists.celestial.com
> > http://mailman.celestial.com/mailman/listinfo/filepro-list
> > 
> 
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