Dumb question about files on a server

[Mike Bonner]

Ah k.. well on the server side the code should be relatively simple.

You need to check for the existence of a folder, so in your .lc script --
if there is not a folder "foldername" then... applies still. If its not
there, create it (create folder "foldername")  If it wasn't there it is
now, so either way you can continue on.

I have the habit of setting the folder I wish to write to, so you could set
the folder to your existing or newly created folder.

The next question is.. If you will simply be appending a line to the file
each time, its easy enough to do so without reading in the contents of the
file.
Just put the new line after url "file:yourfilename" and you're done.

If you need to do other things to the contents first though....

if there is a file "yourfilename" then
   put url "file: yourfilename" into tVar
   do your processing of the existing data, and modify as needed with the
new information
   put tVar into url "file:yourfilename" -- to overwrite the file with the
processed data
else
   process only the new data
   put tData into url "file:yourfilename" -- to create a new file and put
the first values into it
end if

>From your description the problem is very linear and should be simple to
code.



On Mon, Sep 19, 2016 at 2:15 PM, Graham Samuel <livfoss at mac.com> wrote:

> Mike, thanks for that. I think I have not really explained enough about
> what I want.
>
> I have a .lc script on the server that invokes Jacque Gay’s Zygodact
> product to generate license codes, which are then passed on to the payment
> processor. This works fine. However when a code is generated, it would be
> prudent to keep it in a file which is on the server. So I want to add a few
> lines of code to the aforesaid .lc script so that each code goes into a
> text file. I don’t need a database since the list will probably be less
> than 1K lines (if it gets any bigger, I can create another solution). So
> none of this activity is taking place outside the server - it’s all
> happening in a .lc script run by the LC Server engine.
>
> In these circumstances, I thought a fairly straightforward bit of LiveCode
> coding would do the job. This is different from what you’re suggesting, I
> think - though I am out of my comfort zone doing this at all.
>
> Can I appeal for more help on this?
>
> Thanks
>
> Graham
>
> > On 19 Sep 2016, at 17:53, Mike Bonner <bonnmike at gmail.com> wrote:
> >
> > It sounds like you have an app that you want to use to manipulate files
> and
> > folders on a remote server. You could set up a script on the server as a
> > middle man pretty easily I think..
> >
> > Something like this.. (off the top of my head)
> >
> > Have it accept $_POST data, one item of which could be cmd=folder_exists,
> > and pass in the folder name to check..
> >
> > switch $_POST["cmd"]
> > case "folder_exists"
> >    if there is not a folder $_POST["folder_name"] then
> >        create folder $_POST["folder_name"]
> >        put "Folder " & $_POST["folder_name"] & "created"
> >    else
> >        put "Folder " & $_POST["folder_name"] & "Exists"
> >    end if
> > break
> >
> > case "retrieve_file"
> >    put URL ("file:" & $_POST["file_to_retrieve"])
> > break
> > case "update_file"
> >   put $_POST["new_data"] into URL ("file:" & $_POST["file_to_update"])
> > break
> > default
> >   put "invalid request"
> > end switch
> >
> >
> > No thoughts about security on this, just a barebones idea..
> >
> > Now, for the curiosity question.. Would a database back end work better
> for
> > this?  (You'd still need an intermediary script)
> >
> > On Mon, Sep 19, 2016 at 8:40 AM, Graham Samuel <livfoss at mac.com> wrote:
> >
> >> I have some server space and a domain name, let’s say ‘mysite.com <
> >> http://mysite.com/>’. On this host I have a web site (www.mysite.com <
> >> http://www.mysite.com/>), plus LiveCode Server (8.1 commercial as it
> >> happens) and some scripts etc. So far, so good. Now I want to write a
> >> script that runs on the server and does the following - this is not
> code,
> >> but is supposed to show what I want to code:
> >>
> >> 1. If there is not a folder within my space called ‘myUsefulData’, then
> >> create such a folder;
> >>
> >> 2. If there is not a text file ‘myCurrentData.txt’  within the above
> >> folder, then create one (this may not be necessary, as an attempt to
> access
> >> the file might create it?);
> >>
> >> 3. Read the contents of the file into a variable;
> >>
> >> 4. Add some data from within the program (let’s say an extra line at the
> >> end);
> >>
> >> 5. Rewrite the updated file.
> >>
> >> There may also be error checking etc.
> >>
> >> Although this seems extremely simple, I find I don’t know how to do it,
> >> and so far the LC examples I’ve read don’t seem to help. I am not sure
> for
> >> example if FTP comes into the equation (I think it does) or the user
> name
> >> and password I need for FTP access from outside the server (surely
> not?),
> >> or indeed what the path to my own bit of the server actually is. Of
> course
> >> I’ve tried stuff, but nothing has worked so far, and a test script
> (running
> >> in the IDE, not within a server script) fails silently. Nothing is
> created,
> >> nothing is destroyed, but sadly everything isn’t transformed.
> >>
> >> Can anyone explain how to do this, or at least point me to an
> explanation.
> >>
> >> Sorry for the dumb question, but there it is.
> >>
> >> Graham
> >>
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