RE: [HACKERS] [OT] flex, yacc, and bison
От | Jackson, DeJuan |
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Тема | RE: [HACKERS] [OT] flex, yacc, and bison |
Дата | |
Msg-id | D05EF808F2DFD211AE4A00105AA1B5D2485595@cpsmail обсуждение исходный текст |
Ответы |
RE: [HACKERS] [OT] flex, yacc, and bison
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Список | pgsql-hackers |
I'm trying to write a ncftp_auth deamon that will utilize PostgreSQL. The base SDK is in C. I'm adapting it to C++ because I feel like it, but Perl would be a slightly steeper learning curve (sockets and all that). I'm trying to get a conf file parser such that the login's can be in multiple database and/or on different machines.DEJ > -----Original Message----- > From: Michael Alan Dorman [SMTP:mdorman-pgsql.hackers@debian.org] > Sent: Wednesday, August 18, 1999 4:46 PM > To: pgsql-hackers@postgreSQL.org > Subject: Re: [HACKERS] [OT] flex, yacc, and bison > > Tom Lane <tgl@sss.pgh.pa.us> writes: > > "Jackson, DeJuan" <djackson@cpsgroup.com> writes: > > > I need to parse this format: > > > <Database ftpdatabase [hostname[:port]]> > > > [<DatabaseID somebody>] > > > [<DatabasePWD mypwd>] > > > [<Table ftp_users> > > > [<Uname uname>] > > > [<CryptedPwd cryptedpwd>] > > > [<FtpPath ftppath>] > > > </Table>] > > > </Database> > > > > That looks suspiciously like an SGML DTD to me... > > Well, it could almost kind of be SGML, but as specified, there's no > way it could possibly be XML (attributes have to have values, a couple > of other things), which is unfortunate, since that's where all the > cool tools are being developed these days. > > > Rather than doing the whole lex/yacc bit, I'd suggest finding some > > ready-made SGML-parsing tools. For instance, if you are handy with > > Perl I think there are some SGML modules in CPAN ... certainly there > > are HTML parsers, which'd probably be easy to adapt to the purpose. > > I agree with Tom that you try to find existing parsers tuned towards > this stuff, with the addition that you do your self a favor (if you > have the option to change the format), and change it to be something > that can be parsed as XML. > > You don't mention what this is for, but if you're able to move to XML, > you can use Perl (which I personally prefer), Python, TCL, or even one > of several C libraries (expat or rxp or GNOME's libxml) that are > suprisingly easy to use, given that text hacking is not something that > is traditionally easy to do in C. The possibilities are much broader. > > Mike. > > ************ > Check out "PostgreSQL Wearables" @ http://www.pgsql.com
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