What I did for Skink was to write a parser in JavaCC (a java
compiler compiler) which builds a list of objects that represent
the elements of a tune - I then process that list sequentially
to create the notation. The plan is to process the same list
to produce the music, but since I haven't implemented that yet
I don't know for sure whether I can just use the same list or
whether I have to "unroll" repeats, etc.
Java is nice and portable...
wil
Phil Taylor wrote:
> John Henckel wrote:
> >It's true that when the new ABC standard become approved (I say, hopefully)
> >then a lot of software will need to be rewritten to handle the new file
> >format. Perhaps someone could write a really portable ABC parser and then
> >give away the source code that each developer can just "plug it in" to
> >their ABC tool (abc2midi, abc2abc, abc2ps, abc2win, abc2???,
> >etc...) There's no sense in everyone reinventing the wheel.
>
> It's a lovely idea, but it gets awfully complicated when you think
> about it. What would the output of such a parser be? Some programs want
> to make a picture of the staff notation, and would therefore want
> postscript, gif or something of that ilk. Others want to play the music,
> and need MIDI or something equivalent. The first kind of parser can
> take a single pass through the abc, while the second needs to loop
> to deal with repeats. In practice, they are so different that I
> wrote two entirely separate tune parsers for BarFly. The only common
> code is the part which parses the header.
>
> What is needed perhaps is an intermediate representation of the music
> which is easy to convert to either picture or sound. The first stage
> parser which converts abc to this intermediate format could be used
> by us all, while the remaining part of the job would be handled by
> the developer's own code. The trouble is, we'd spend forever arguing
> about the details of the intermediate format...
>
> Phil Taylor
>
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--
Wil Macaulay email: [EMAIL PROTECTED]
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