newbe question about removing items from one file to another file

[Simon Forman]

Eric_Dexter at msn.com wrote:
> Anthra Norell wrote:
> > Dexter,
> >
> > I looked at the format specification. It contains an example:
> >
> > -----------------------------------------------
> >
> > <CsoundSynthesizer>;
> >   ; test.csd - a Csound structured data file
> >
> > <CsOptions>
> >   -W -d -o tone.wav
> > </CsOptions>
> >
> > <CsVersion>    ;optional section
> >   Before 4.10  ;these two statements check for
> >   After 4.08   ;   Csound version 4.09
> > </CsVersion>
> >
> > <CsInstruments>
> >   ; originally tone.orc
> >   sr = 44100
> >   kr = 4410
> >   ksmps = 10
> >   nchnls = 1
> >   instr   1
> >       a1 oscil p4, p5, 1 ; simple oscillator
> >          out a1
> >     endin
> > </CsInstruments>
> >
> > <CsScore>
> >   ; originally tone.sco
> >   f1 0 8192 10 1
> >   i1 0 1 20000 1000 ;play one second of one kHz tone
> >   e
> > </CsScore>
> >
> > </CsoundSynthesizer>
> >
> > -------------------------------------
> >
> > If I understand correctly you want to write the instruments block to a file (from <CsInstruments> to </CsInstruments>)? Right? Or
> > each block to its own file in case there are several?. You want your code to generate the file names? Can you confirm this or
> > explain it differently?
> >
> > Regards
> >
> > Frederic
> >
> >
> > ----- Original Message -----
> > From: <Eric_Dexter at msn.com>
> > Newsgroups: comp.lang.python
> > To: <python-list at python.org>
> > Sent: Monday, August 28, 2006 10:48 AM
> > Subject: Re: newbe question about removing items from one file to another file
> >
> >
> > >
> > > Anthra Norell wrote:
> > > > Eric,
> > > >    Having played around with problems of this kind for quite some time I find them challenging even if I don't really have time
> > to
> > > > get sidetracked. Your description of the problem makes it all the more challenging, because its 'expressionist' quality adds the
> > > > challenge of guessing what you mean.
> > > >    I'd like to take a look at your data, if you would post a segment on which to operate, the same data the way it should look
> > in
> > > > the end. In most cases this is pretty self-explanatory. Explain the points that might not be obvious to a reader who knows
> > nothing
> > > > about your mission.
> > > >
> > > > Frederic
> > > >
> > > > ----- Original Message -----
> > > > From: <Eric_Dexter at msn.com>
> > > > Newsgroups: comp.lang.python
> > > > To: <python-list at python.org>
> > > > Sent: Sunday, August 27, 2006 11:35 PM
> > > > Subject: newbe question about removing items from one file to another file
> > > >
> > > >
> > > > > def simplecsdtoorc(filename):
> > > > >     file = open(filename,"r")
> > > > >     alllines = file.read_until("</CsInstruments>")
> > > > >     pattern1 = re.compile("</")
> > > > >     orcfilename = filename[-3:] + "orc"
> > > > >     for line in alllines:
> > > > >         if not pattern1
> > > > >              print >>orcfilename, line
> > > > >
> > > > > I am pretty sure my code isn't close to what I want.  I need to be able
> > > > > to skip html like commands from <defined> to <undefined> and to key on
> > > > > another word in adition to </CsInstruments> to end the routine
> > > > >
> > > > > I was also looking at se 2.2 beta but didn't see any easy way to use it
> > > > > for this or for that matter search and replace where I could just add
> > > > > it as a menu item and not worry about it.
> > > > >
> > > > > thanks for any help in advance
> > > > >
> > > > > --
> > > > > http://mail.python.org/mailman/listinfo/python-list
> > >
> > > sorry about that this is a link to a discription of the format
> > > http://kevindumpscore.com/docs/csound-manual/commandunifile.html
> > > It is possible to have more than one instr defined in an .csd file so I
> > > would need to look for that string also if I want to seperate the
> > > instruments out.
> > >
> > > http://www.dexrow.com
> > >
> > > --
> > > http://mail.python.org/mailman/listinfo/python-list
>
> I need to take it between the blocks only I also need to make sure I
> only take one instrument
> defined in this example with the code instr   1 I also need the code
>
> <CsInstruments>
> >   ; originally tone.orc
> >   sr = 44100
> >   kr = 4410
> >   ksmps = 10
> >   nchnls = 1
>
> regardless of what instrument I take.  The function would have to
> except the instrument number as an argument
>
> http://www.dexrow.com

Using BeautifulSoup and the interactive interpreter, I figured out the
following script in about 15 minutes:

# s is a string containing the example file from above.

from BeautifulSoup import BeautifulStoneSoup

soup = BeautifulStoneSoup(s)
csin = soup.contents[0].contents[5]
lines = csin.string.splitlines()

print csin.string

It prints:

  ; originally tone.orc
  sr = 44100
  kr = 4410
  ksmps = 10
  nchnls = 1
  instr   1
      a1 oscil p4, p5, 1 ; simple oscillator
         out a1
    endin


and of course you could say "lines = csin.string.splitlines()" to get a
list of the lines.  That doesn't take you all the way, but it's
something.

Hope that helps,
Peace,
~Simon