OpenEuphoria

1. How can I use system cmd with variables?

• Posted by Dan Moyer <danielmoyer at pr??igy.net> Sep 17, 2007
• 574 views

I'm writing a small utility to rename a bunch of files in some folders, 
(I need to get rid of *spaces* in the file names, & the right-click rename
won't do that),
and I thought to use the following code, but it (naturally) bombed on the
variable inside quotes...so how *would* I use a variable in this situation?

for n = 1 to length(newFileNames) do
  	system("rename folderPathName & oldFileNames[n] newFileNames[n]", 2)
  end for

Dan Moyer

3. Re: How can I use system cmd with variables?

• Posted by Dan Moyer <danielmoyer at p?o?igy.net> Sep 17, 2007
• 522 views

Dan Moyer wrote:
> 
> I'm writing a small utility to rename a bunch of files in some folders, 
> (I need to get rid of *spaces* in the file names, & the right-click rename
> won't do that),
> and I thought to use the following code, but it (naturally) bombed on the
> variable inside quotes...so how *would* I use a variable in this situation?
> 
> }}}
<eucode>
>   for n = 1 to length(newFileNames) do
>   	system("rename folderPathName & oldFileNames[n] newFileNames[n]", 2)
>   end for
> </eucode>
{{{

> 
> Dan Moyer

Oops, I notice now that I asked a similar question some time ago,
& someone (don't remember who, sorry) provided following answer, 
I'll test it now.

procedure rename (sequence oldNameWithPath, sequence newNameWithoutPath)
   -- rename a file or directory (both names may contain spaces)
system(sprintf("rename \"%s\" \"%s\"", {oldNameWithPath,
   newNameWithoutPath}), 2)
end procedure 

rename (selectedFolderPathName & "\\" & cdFiles[n], newCdFileName)

Dan

5. Re: How can I use system cmd with variables?

• Posted by Dan Moyer <danielmoyer at prodigy??et> Sep 17, 2007
• 521 views

Derek Parnell wrote:
> 
> Dan Moyer wrote:
> > 
> > I'm writing a small utility to rename a bunch of files in some folders, 
> > (I need to get rid of *spaces* in the file names, & the right-click rename
> > won't do that),
> > and I thought to use the following code, but it (naturally) bombed on the
> > variable inside quotes...so how *would* I use a variable in this situation?
> > 
> > }}}
<eucode>
> >   for n = 1 to length(newFileNames) do
> >   	system("rename folderPathName & oldFileNames[n] newFileNames[n]", 2)
> >   end for
> > </eucode>
{{{

> 
> system("rename " & "\" & folderPathName & oldFileNames[n] & "\""
>           &  newFileNames[n], 2)
> 
> -- 
> Derek Parnell
> Melbourne, Australia
> Skype name: derek.j.parnell

Sigh, thanks Derek, should'a known it was simple, will I *ever* learn???

But shouldn't it be:
 system("rename "  & folderPathName & "\\" & oldFileNames[n] & " "
           &  newFileNames[n], 2)
?
Dan

7. Re: How can I use system cmd with variables?

• Posted by Dan Moyer <danielmoyer at pr??igy.net> Sep 17, 2007
• 533 views

Derek Parnell wrote:
> 
> Dan Moyer wrote:
> > But shouldn't it be:
> >  system("rename "  & folderPathName & "\\" & oldFileNames[n] & " "
> >            &  newFileNames[n], 2)
> 
> I assumed that because you didn't have the "\\" that it was already appended
> to the end of the pathname. If not then the sprintf way is very neat.

Yes, I did already make it have "\\" at the end of the pathname, I forgot
when I suggested the above; your second way worked *fine*, THANKS :)


> 
> system(sprintf("rename \"%s\\%s\" %s", 
>                  {folderPathName, 
>                   oldFileNames[n],
>                   newFileNames[n]})
>          , 2)
> 
> I have the quotes surrounding the 'from' name because you mentioned that it
> contains embedded spaces.

Ok, I wasn't sure why, but it sure worked fine 

Dan

> 
> -- 
> Derek Parnell
> Melbourne, Australia
> Skype name: derek.j.parnell

9. Re: How can I use system cmd with variables?

• Posted by Dan Moyer <danielmoyer at pro?ig?.net> Sep 21, 2007
• 528 views

Shawn,

Ok, thanks, I didn't know about those routines.  I haven't looked at them
yet, but the example you provided suggests it will *move* and rename a file,
is there one that just renames it?  

I'm just curious, as the system() command as elaborated by Derek worked fine
for what I wanted.

Dan

Shawn wrote:
> 
> 
> I think you asked the wrong question.  system() puts a
> black rectangle on the screen.  I would ask how do you
> rename files without going through system()?  Unless you 
> are coding for DOS you 
> can use the ssl.e routines from the archive like this:
> 
> include ssl.e as ssl
> 
> if ssl:move_file(    ssl:join( "\\", {folderPathName,oldFileNames[n]} ), 
>     ssl:join( "\\", {folderPathName,newFileNames[n]} )   ) then
>        -- success
> end if
> 
> Shawn Pringle

11. Re: How can I use system cmd with variables?

• Posted by Shawn <pringle at t?c?ie.com> Sep 21, 2007
• 512 views

I am not aware of any such function in any programming language.  All of them
provide generic functions that do one or another.  The distinction is just
not made in the kernel of the OSes as the actions as moving is just a 
generalization of renaming.

In UNIX there is no rename command.  People are accustomed to using 'mv' for
doing either operation.  

Ok.  I think if you do move_file( "dir1\\file1", "file2" ) it will probably
also move the file to dir1, which is not what you want.  With system however,
the user could inject code strings.  Like with SQL injection attacks.

If you are curious about other renaming programs there is one available for
Linux and it is distributed on the Puppy Linux CD.  That version of Linux 
runs out of memory that is loaded from the CD.  So you don't have to
mess with your computer's hard drive.

Shawn Pringle






Dan Moyer wrote:
> 
> Shawn,
> 
> Ok, thanks, I didn't know about those routines.  I haven't looked at them
> yet, but the example you provided suggests it will *move* and rename a file,
> is there one that just renames it?  
> 
> I'm just curious, as the system() command as elaborated by Derek worked fine
> for what I wanted.
> 
> Dan
> 
> Shawn wrote:
> > 
> > 
> > I think you asked the wrong question.  system() puts a
> > black rectangle on the screen.  I would ask how do you
> > rename files without going through system()?  Unless you 
> > are coding for DOS you 
> > can use the ssl.e routines from the archive like this:
> > 
> > include ssl.e as ssl
> > 
> > if ssl:move_file(    ssl:join( "\\", {folderPathName,oldFileNames[n]} ), 
> >     ssl:join( "\\", {folderPathName,newFileNames[n]} )   ) then
> >        -- success
> > end if
> > 
> > Shawn Pringle