btool-users

[btOOL] escaping problems

[Guillaume R. <Gui...@in...>]

I'm using Text::BibTeX to convert bibtex database to XML. I faced small
escaping problems I was unable to solve properly.

First, all entries keep internal formating braces.
Such a bibtex entry:
title =3D "Automata-based Parsing in Dynamic Programming for
    {L}inear {I}ndexed {G}rammars"
Result in following title value:
Automata-based Parsing in Dynamic Programming for
{L}inear {I}ndexed {G}rammars

Second, I was unable to convert accentued characters macros, such as \'E
to =C9, even when trying to use macro-related functions, such as
add_macro_text('\\\'E', '=C9') or add_macro_text("\\'E", '=C9')

The only solution I found is an ugly hack to add additional function in
original Text::BibTeX namespace, so as to convert values on the fly:

sub convert {
    $_[0] =3D~ s/{//g;
    $_[0] =3D~ s/}//g;
    $_[0] =3D~ s/\\'E/=C9/g;
    $_[0] =3D~ s/\\'o/=F3/g;
    $_[0] =3D~ s/\\'a/=E1/g;
    return $_[0];
}

package Text::BibTeX::Entry;

sub safe_get {
    my ($self, $field) =3D @_;
    return main::convert($self->get($field));
}

package Text::BibTeX::Name;

sub safe_part {
    my ($self, $field) =3D @_;
    return
        map { main::convert($_) }
        $self->part($field);
}

Is there any other solution ?

--=20
Everything always works in your HQ, everything always fails in the
Colonel's HQ
		-- Murphy's Military Laws n=B030

Re: [btOOL] escaping problems

[Greg W. <gwa...@py...>]

On 30 November 2005, Guillaume Rousse said:
> I'm using Text::BibTeX to convert bibtex database to XML. I faced s=
mall
> escaping problems I was unable to solve properly.
>=20
> First, all entries keep internal formating braces.
> Such a bibtex entry:
> title =3D "Automata-based Parsing in Dynamic Programming for
>     {L}inear {I}ndexed {G}rammars"
> Result in following title value:
> Automata-based Parsing in Dynamic Programming for
> {L}inear {I}ndexed {G}rammars
>=20
> Second, I was unable to convert accentued characters macros, such a=
s \'E
> to =C9, even when trying to use macro-related functions, such as
> add_macro_text('\\\'E', '=C9') or add_macro_text("\\'E", '=C9')

You're being bitten by the fact that btparse is a BibTeX parser, not =
a TeX
parser.  Most BibTeX files include TeX markup, and btparse generally =
doesn't
touch that stuff.  (I dimly recall some hacks for dealing with accent=
ed
characters, but don't remember the details.)

> The only solution I found is an ugly hack to add additional functio=
n in
> original Text::BibTeX namespace, so as to convert values on the fly=
:

That's pretty ugly, all right.  Do you really have to meddle in the
Text::BibTeX namespace?  Can't you just write your own post-processin=
g code?
It'll be the same cheezy regex hacks to handle whatever limited subse=
t of
TeX markup occurs in your .bib files, but at least it wouldn't interf=
ere with
the library's business.

        Greg
--=20
Greg Ward <gw...@py...>                         http://www.gerg.=
ca/
=2E.. I think I'd better go back to my DESK and toy with a few common
MISAPPREHENSIONS ...

Re: [btOOL] escaping problems

[Guillaume R. <Gui...@in...>]

Greg Ward wrote:
>>The only solution I found is an ugly hack to add additional function in
>>original Text::BibTeX namespace, so as to convert values on the fly:
>=20
>=20
> That's pretty ugly, all right.  Do you really have to meddle in the
> Text::BibTeX namespace?  Can't you just write your own post-processing =
code?
> It'll be the same cheezy regex hacks to handle whatever limited subset =
of
> TeX markup occurs in your .bib files, but at least it wouldn't interfer=
e with
> the library's business.
My original intent was to temporary fix the problem on the Text::BibTeX
side, without changing my own code, thus transparently replacing
original method by another one, while investigating the use of macros to
achieve the same in a better way.

As it seems unavoidable, I'll effectively revert to handle the problem
from my own namespace.

--=20
Each profession talks to itself in its own unique language
		-- Murphy's In Laws n=B017