Dumb question about files on a server

Mike Bonner bonnmike at gmail.com
Mon Sep 19 17:09:10 EDT 2016 

The current path starts in the same directory as the script being run, so
you can do all your work relative from there.  You aren't finding a path
"to" the server, all paths on the server are relative to each other, and
since the lc script is local to that filesystem thats exactly how you view
it. As a local system.

If you wish to hide the file in question outside the http hierarchy you can
probably do that too depending on permissions and how your host server is
set up.

If you "put the folder" with an lc script, you should see the path to the
working directory all the way back to root which will help you figure out
where things reside.    For example, on-rev has a public_html folder where
all account domains are contained.  If the lc script is in the mydomain
folder inside public_html and you have it "put the folder" you would see
something like /home/youraccountname/public_html/mydomain

So it boils down to.. If you know where the script is, and you know where
you want the folder to be you should be able to ferret out the correct
path.

You'll also want to add error checking of course to make sure folders and
files actually get created.



On Mon, Sep 19, 2016 at 2:53 PM, Graham Samuel <livfoss at mac.com> wrote:

> Ah Mike, that's more what I was expecting. The dumb part is that I have
> never had to use a file path not associated with an LC standalone,
> including 'specialfolderpath' paths, so I don't understand how to retrieve
> the path to the remote server. I bet this is so simple that you didn't
> think it was a problem. I will experiment some more, but I have not got it
> right so far.
>
> Cheers
>
> Graham
>
> Sent from my iPad
>
> > On 19 Sep 2016, at 22:36, Mike Bonner <bonnmike at gmail.com> wrote:
> >
> > 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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