190 lines
6.3 KiB
Perl
190 lines
6.3 KiB
Perl
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#######################################################################################
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# A module for loading .tex files and feeding the data to the various applications. #
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# Copyright (c) 2005, Ioan Sucan, released under the Gnu General Public License (GPL) #
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# see http://www.gnu.org/copyleft/gpl.html #
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# $URL: svn://kwarc.eecs.iu-bremen.de/repos/kwarc/projects/content/bin/Modparse.pm$ #
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# $Date: 2005-09-26 12:44:28 -0500 (Mon, 26 Sep 2005) $ $Rev: 4243 $ #
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#######################################################################################
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package Modparse;
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use File::Basename;
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use File::Path;
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# if both snippath and snippathList are specified,
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# snippathList is ignored !
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# if a default snippath definition file is found
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# (snippath.def) it is used if no snippath is given
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# as argument;
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sub new {
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my ($class, %options) = @_;
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$options{recursion} = 1 unless defined $options{recursion};
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$options{requireStatus} = 'include|exclude' unless defined $options{requireStatus};
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$options{loadInputs} = 1 unless defined $options{loadInputs};
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$options{onlyModuleLines} = 0 unless defined $options{onlyModuleLines};
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if ( !(%{$options{snippath}}) && (-e "snippath.def") ) {
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open(SNIPPATHDEF, 'snippath.def');
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my @snlist = <SNIPPATHDEF>;
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close(SNIPPATHDEF);
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for (my $i = 0 ; $i <= $#snlist; $i++) { chomp($snlist[$i]); }
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%{$options{snippath}} = @snlist; }
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@{$options{snippathList}} = keys(%{$options{snippath}})
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if ($options{snippath} && %{$options{snippath}});
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$options{debug} = 0;
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bless(\%options, $class); }
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sub execute{
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my ($self, $file) = @_;
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local *run_event = sub {
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my ($event, $arg) = @_;
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if ($self->{$event}) { $self->{$event}($arg); }
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};
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local *go = sub {
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my ($location, %param) = @_;
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my ($tex, $path, @tex_data) = $self->readLocation($location);
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return unless @tex_data;
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my $NL = $#tex_data+1;
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$param{filename} = $tex;
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$param{depth}++;
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$param{filecount}++;
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my $i = 0;
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$param{nextline} = sub { $tex_data[++$i]; };
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$param{prevline} = sub { $tex_data[--$i]; };
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$param{rewriteline}= sub { $tex_data[$i] = $_[0]; };
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print "Processing $tex...\n" if $self->{verbose};
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run_event('onBeginFile', \%param);
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while ($i<$NL){
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$param{original} = $tex_data[$i];
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$_ = $tex_data[$i]; chomp; /([^%]*)((%.*)?)/;
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($param{tex}, $param{comment}) = ($1, $2); $_ = $1;
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s/\s+//g; $param{simple_tex} = $_;
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if (/\\begin\{module\}(\[([^\]]*)\])?/) {
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if ($param{in_module}) {
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push(@{$param{module_stack}}, [$param{module_id}, $param{module_arg}]); }
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$param{in_module} = 1;
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$param{module_args} = $1 ? $2 : undef;
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$param{module_id} = ($param{module_args} &&
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$param{module_args} =~ /id=([^\],]+)/) ? $1 : undef;
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$param{module_nesting}++;
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run_event('onBeginModule', \%param); }
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if (/\\end\{module\}/) {
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run_event('onEndModule', \%param);
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if ($#{$param{module_stack}} >= 0) {
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($param{module_id}, $param{module_args}) = @{pop(@{$param{module_stack}})};
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} else {
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$param{in_module} = 0;
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($param{module_id}, $param{module_args}) = (undef, undef); }
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$param{module_nesting}--;
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}
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foreach my $srch_snippath(@{$self->{snippathList}}){
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$self->{snippath}{$srch_snippath} = $1
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if (/\\def\\$srch_snippath\#1\{([^\#]+)\#1\}$/); }
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if ($self->{follow} && (/\\((requiremodules(\[($self->{requireStatus})\])?)|input|include)\{([^\}]+)\}/)){
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my $req_filename = $5; my $req_spath = ''; my $command = $1;
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my $is_require = ($command =~ /requiremodules/) ? 1 : 0;
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if ($is_require || $self->{loadInputs}) {
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foreach my $srch_snippath(@{$self->{snippathList}}){
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if ($req_filename =~ /\\$srch_snippath\{(.+)/){
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($req_spath, $req_filename) = ($self->{snippath}{$srch_snippath}, $1);
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last; }}
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run_event('onRecurse', \%param);
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if ($self->{recursion} || !$is_require) {
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go($self->makeLocation($req_filename, $path, $req_spath), %param); }
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}
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}
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run_event('onEveryLine', \%param) if ($param{in_module} || !$self->{onlyModuleLines});
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last if (/\\end\{document\}/ && $self->{stopAtEnd});
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$i++;
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}
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run_event('onEndFile', \%param);
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$param{depth}--; return;
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};
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my %param = (pack=>$self, perm=>$self->{_AUX_DATA}, depth=>0, filecount=>0,
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in_module=>0, module_nesting=>0);
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run_event('onBegin', \%param);
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go($self->makeLocation($file), %param);
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run_event('onEnd', \%param);
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return;
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}
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# add a [.tex] extension to the filename
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sub add_ext{
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my ($self, $fn, $ext) = @_;
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$ext = '.tex' unless $ext;
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$fn.=$ext if $fn !~ /\Q$ext\E$/;
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$fn; }
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# as long as the extension is .tex, drop it
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sub drop_ext{
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my ($self, $filename) = @_;
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while ($filename =~ /\.tex$/){
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while ($filename !~ /\.$/ ) { chop($filename); }
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chop($filename); }
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$filename; }
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sub new_ext{
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my ($self, $filename, $ext) = @_;
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$self->add_ext($self->drop_ext($filename), $ext); }
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# location = pointer to array of strings
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# first element is filename; next are possible paths
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sub makeLocation{ my $self = shift; return \@_; }
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# read a location into an array of strings
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# aslo return filename and path to it (just in
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# case some changes were made to it, like adding
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# extension and/or relative paths)
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sub readLocation{
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my ($self, $location) = @_;
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my ($filename, @paths) = @{$location};
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# try to add proper extension;
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my $filename_ext = $self->new_ext($filename) unless -e $filename;
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$filename = $filename_ext if $filename_ext && -e $filename_ext;
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# try search paths
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if (! -e $filename){
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my $all_p = '';
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foreach my $p(@paths){
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$all_p .= $p;
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$filename = $all_p.$filename and last if -e $all_p.$filename;
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$filename = $p.$filename and last if -e $p.$filename;
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if ($filename_ext){
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$filename = $all_p.$filename_ext and last if -e $all_p.$filename_ext;
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$filename = $p.$filename_ext and last if -e $p.$filename_ext; }
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}}
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# don't do the same work too many times
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foreach my $file(@{$self->{loadedFiles}})
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{ return undef if $file eq $filename; }
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push(@{$self->{loadedFiles}}, $filename);
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open(FIN, $filename) or die "Cannot open '$filename'\n";
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my @data = <FIN>;
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close(FIN);
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# find path of current file
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my $path = dirname($filename);
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$path.='/' if ($path ne '');
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return ($filename, $path, @data);
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}
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1;
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