Re: Pattern matching programming

[Hareesh Nagarajan <hareesh.nagarajan@gmail.com>]

On 5/18/05, Fabrizio Sestito <lain@neotes.org> wrote:
> On Wednesday 18 May 2005 17:36, fabio@crearium.com wrote:
> > Hello,
> >
> > I am trying to code a small C program that basically takes a long text
> > file with data that comes from a mysql server.

If you know the exact syntax of the incoming text, you could hand
write a parser. Essentially, you need to know all the states you can
be in.

For e.g.: You cannot encounter a </p> before you a <p>. Etc.

HTH,

Hareesh

PS: But you should use an existing library which Fabrizio mentions,
instead of reinventing the wheel.

> >
> > But I realize It is better to use regular expression. This is an examples
> > of the text:
> >
> > =1 <p> blah </p> <div foo>{$foobar}</div>blah.... <p>linux rulez</p>
> > misc characters.... =2 blah blah <p> linux rulez again</p>....
> > <p>foo</p?blah
> >
> >
> > And so on.
> >
> > The patterns are:
> >
> > The record is represented by an equal. Ej, record 1 is "=1", record 2 is
> > "=2" and so on.
> >
> > The desired text is where "linux rulez" is inside, it is the FIRST <p>
> > </p> AFTER a record.
> >
> > So, I see that program this makes no sense because it is better to use sed
> > and awk.
> >
> > The result I want to have is something like:
> >
> > 1 linux rulez
> > 2 linux rulez again
> > 3 linux rulez so far
> > ...etc
> >
> > The idea is elimate all <div>'s tags, then get the numbers (maybe with awk
> > -F"="), and then get the next <p> taq, remove the tags themself and
> > numbers and then the text and do the same procedure for all the 65230
> > records.
> >
> > Thanks alot for any comment, sorry for the 'offtopic'
> >
> > Kind regards,
> >
> > fabio
> >
> Why don't you use an XML parser library?
> 
> Fabrizio
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