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Diffstat (limited to 'support/autolatex/pm/AutoLaTeX/TeX/DocumentDetector.pm')
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diff --git a/support/autolatex/pm/AutoLaTeX/TeX/DocumentDetector.pm b/support/autolatex/pm/AutoLaTeX/TeX/DocumentDetector.pm new file mode 100644 index 0000000000..03e125a245 --- /dev/null +++ b/support/autolatex/pm/AutoLaTeX/TeX/DocumentDetector.pm @@ -0,0 +1,145 @@ +# autolatex - DocumentDetector.pm +# Copyright (C) 2013 Stephane Galland <galland@arakhne.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. + +=pod + +=head1 NAME + +DocumentDetector.pm - Detect if a TeX file contains a LaTeX document. + +=head1 DESCRIPTION + +Tool that is parsing a TeX file and detect if \documentclass is inside. + +To use this library, type C<use AutoLaTeX::TeX::DocumentDetector;>. + +=head1 FUNCTIONS + +The provided functions are: + +=over 4 + +=cut +package AutoLaTeX::TeX::DocumentDetector; + +$VERSION = '1.0'; +@ISA = ('Exporter'); +@EXPORT = qw( &isLaTeXDocument ) ; +@EXPORT_OK = qw(); + +require 5.014; +use strict; +use utf8; +use vars qw(@ISA @EXPORT @EXPORT_OK $VERSION); +use AutoLaTeX::TeX::TeXParser; + +my %MACROS = ( + 'documentclass' => '![]!{}', + ); + +=pod + +=item B<isLaTeXDocument($)> + +Replies if the given file is a LaTeX document, ie. +a text file that contains \documentclass. + +=over 4 + +=item * C<file> is the name of the file to parse. + +=back + +I<Returns:> true if the file is a LaTeX document; +false otherwise. + +=cut +sub isLaTeXDocument($) { + my $input = shift; + + local *FILE; + open(*FILE, "< $input") or printErr("$input: $!"); + my $content = ''; + while (my $line = <FILE>) { + $content .= $line; + } + close(*FILE); + + my $listener = AutoLaTeX::TeX::DocumentDetector->_new(); + + my $parser = AutoLaTeX::TeX::TeXParser->new("$input", $listener); + + while (my ($k,$v) = each(%MACROS)) { + $parser->addTextModeMacro($k,$v); + $parser->addMathModeMacro($k,$v); + } + + $parser->parse( $content ); + + return $listener->{'isLaTeXDocument'}; +} + +sub _expandMacro($$@) : method { + my $self = shift; + my $parser = shift; + my $macro = shift; + if ($macro eq '\\documentclass' ) { + $self->{'isLaTeXDocument'} = 1; + $parser->stop(); + } + return ''; +} + +sub _new() : method { + my $proto = shift; + my $class = ref($proto) || $proto; + my $parent = ref($proto) && $proto ; + + my $self ; + if ( $parent ) { + %{$self} = %{$parent} ; + } + else { + $self = { + 'expandMacro' => \&_expandMacro, + 'isLaTeXDocument' => 0, + }; + } + bless( $self, $class ); + return $self; +} + +1; +__END__ +=back + +=head1 BUG REPORT AND FEEDBACK + +To report bugs, provide feedback, suggest new features, etc. visit the AutoLaTeX Project management page at <http://www.arakhne.org/autolatex/> or send email to the author at L<galland@arakhne.org>. + +=head1 LICENSE + +S<GNU Public License (GPL)> + +=head1 COPYRIGHT + +S<Copyright (c) 2013 Stéphane Galland E<lt>galland@arakhne.orgE<gt>> + +=head1 SEE ALSO + +L<autolatex-dev> |