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27de1486ca
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@140 a592a061-630c-0410-9148-cb99ea01b6c8
230 lines
8.7 KiB
Perl
230 lines
8.7 KiB
Perl
# This file is part of reLyX.
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# Copyright (c) 1998-9 Amir Karger karger@post.harvard.edu
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# You are free to use and modify this code under the terms of
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# the GNU General Public Licence version 2 or later.
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package MakePreamble;
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# This package reads a LaTeX preamble (everything before \begin{document}
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# and translates it to LaTeX.
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use strict;
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my $debug_on; # package-wide variable set if -d option is given
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my $true_class; # which textclass to use (if -c option is given)
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sub split_preamble {
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# Split the file into two files, one with just the preamble
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# Simply copy stuff verbatim, saving translation for later
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# Skip the LyX-generated portion of the preamble, if any. (Otherwise,
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# when you try to "view dvi" in LyX, there will be two copies of the
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# preamble matter, which will break LyX.
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my ($InFileName, $PreambleName, $OutFileName) = (shift, shift, shift);
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my ($a, $b, $c);
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my $forget=0;
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# Was -d option given?
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$debug_on = (defined($main::opt_d) && $main::opt_d);
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# -c option?
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$true_class = defined($main::opt_c) ? $main::opt_c : "";
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my $zzz = $debug_on
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? " from LaTeX file $InFileName into $PreambleName and $OutFileName"
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: "";
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warn "Splitting Preamble$zzz\n";
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open (INFILE, "<$InFileName") or die "problem opening $InFileName: $!\n";
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open (PREAMBLE, ">$PreambleName") or
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die "problem opening $PreambleName: $!\n";
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open (OUTFILE, ">$OutFileName") or die "problem opening $OutFileName: $!\n";
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# Copy everything up to "\begin{document}" into the preamble
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while (<INFILE>) {
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if (s/\Q\begin{document}\E//) {
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($a, $b, $c) = ($`, $&, $'); # save for later
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last;
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}
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# In real life, there should never be Textclass specific stuff unless
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# there is also LyX specific. But it can't hurt to test for both.
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$forget=1 if m/%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LyX specific/ ||
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m/%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific/;
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print PREAMBLE $_ unless $forget;
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$forget=0 if m/%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified/;
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}
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die "Didn't find \\begin{document} command!" unless defined $b;
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# There *could* be a preamble command on the same line as \begin{doc}!
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print PREAMBLE $a;
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print "Put preamble into file $PreambleName\n" if $debug_on;
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# Copy everything else into another file
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# Ignore anything after '\end{document}
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print OUTFILE $b, $c; #'\begin{document}' plus anything else on the line
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while (<INFILE>) {
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print OUTFILE $_;
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last if $_ =~ /^[^%]*\Q\end{document}\E/;
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}
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print "Put rest of file into $OutFileName\n" if $debug_on;
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close INFILE; close OUTFILE; close PREAMBLE;
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#warn "Done splitting preamble\n";
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} #end sub split_preamble
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# Actually translate a LaTeX preamble (in a file) into a LyX preamble.
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# Input:
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# First argument is the name of the file containing *only* the preamble
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# Second argument is the LyX format (e.g., "2.15")
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#
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# Output: document class, LyX Preamble, LaTeX preamble
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# LyX premable contains the LyX options etc.
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# LaTeX preamble is stuff that doesn't translate into LyX options)
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#
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sub translate_preamble {
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my $PreambleName = shift;
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my $Format = shift;
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$debug_on = (defined($main::opt_d) && $main::opt_d);
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my $zzz=$debug_on ? " from $PreambleName" :"";
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warn "Creating LyX preamble$zzz\n";
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open (PREAMBLE, "<$PreambleName");
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# Translate optional args to \documentclass to LyX preamble statements
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my %Option_Trans_Table = (
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"10pt" => "\\paperfontsize 10",
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"11pt" => "\\paperfontsize 11",
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"12pt" => "\\paperfontsize 12",
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"letterpaper" => "\\papersize letterpaper",
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"legalpaper" => "\\papersize legalpaper",
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"executivepaper" => "\\papersize executivepaper",
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"a4paper" => "\\papersize a4paper",
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"a5paper" => "\\papersize a5paper",
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"b5paper" => "\\papersize b5paper",
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"twoside" => "\\papersides 2",
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"oneside" => "\\papersides 1",
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"landscape" => "\\paperorientation landscape",
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"onecolumn" => "\\papercolumns 1",
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"twocolumn" => "\\papercolumns 2",
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);
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# This is the string in which we're concatenating everything we translate
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my $LyX_Preamble = "";
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# It would be nice to read the defaults.lyx file but for now we don't bother
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#my $default_dir = "templates/";
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#my $default_name = "defaults.lyx";
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#my $default_file = $dot_lyxdir . $default_dir . $default_name;
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#if (-e $default_file) {
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# print "Going to open default LyX file $default_file\n";
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# open (DEFAULT_LYX,$default_file) or warn "can't find default lyx file!";
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# if ($fmt =~ /^\s*\\lyxformat [0-9.]+/) {
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# print $fmt
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# } else {
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# die "Need \\lyxformat command in first line of default lyx file!";
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# }
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# AFTER printing the preamble, we'd print other commands from defaults.lyx
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# while (($line = <DEFAULT_LYX>) !~ /^.*\\layout/) {
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# if ($line !~ /^\s*(\#|\\textclass\W)/) { #already printed this line
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# print OUTFILE $line;
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# }
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# }
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#}
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# Write first two lines of the lyx file
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my ($nm, $dt);
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# whoami is needed on Win32, because getlong/getpwuid aren't implemented
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# I'd rather use internal Perl functions when possible, though
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$nm = (eval {getlogin || getpwuid($<)}) || `whoami`;
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$dt = localtime;
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$LyX_Preamble .= "\#This file was created by <$nm> $dt\n";
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$LyX_Preamble .= "\#LyX 1.0 (C) 1995-1999 Matthias Ettrich " .
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"and the LyX Team\n";
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# Print \lyxformat.
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$LyX_Preamble .= "\\lyxformat $Format\n";
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# Ignore everything up to the \documentclass
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my $ignore = "";
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while (<PREAMBLE>) {
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next if /^\s*$/ || /^\s*%/; # skip whitespace or comment
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# could just allow 'documentclass' and not support 2.09
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last if s/^\s*\\document(style|class)//;
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$ignore .= $_; # concatenate the ignored text
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} # end while
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warn "Uncommented text before \\documentclass command ignored!\n"if $ignore;
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print "Ignored text was\n------\n$ignore------\n" if $debug_on && $ignore;
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# concatenate all the extra options until the required argument to
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# \documentclass, which will be in braces
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until (eof(PREAMBLE) || /\{/) {
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my $instr = <PREAMBLE>;
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$instr =~ s/\s*%.*$//; # get rid of comments
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chomp; # remove the \n on $_ prior to concatenating
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$_ .= $instr;
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} # end loop; check the now longer $_ for a brace
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# Read optional arguments, which are now guaranteed to be on one line
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# (They're read here, but printed AFTER the \\textclass command)
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# Note: the below pattern match is *always* successful, so $& is always
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# set, but it will be '' if there are no optional arguments. $1 will be
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# whatever was inside the brackets (i.e., not including the [])
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my $extra_options;
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if (defined($_)) {
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s/^\s*//; # there might be space before args
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s/$Text::TeX::optionalArgument//;
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$extra_options = $1 if $&;
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}
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# Read the document class, in braces, then convert it to a textclass
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# However, if the user input a different class with the -c option, use that
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s/\s*\{(\w+)\}//;
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my $class = $1;
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$class = $true_class if $true_class; # override from -c option
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die "no document class in file, no -c option given\n" unless $class;
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$LyX_Preamble .= "\\textclass $class\n";
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print "document class is $class\n" if $debug_on;
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# Analyze the extra options, and remove those we know about
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if ($extra_options) {
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my $op;
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foreach $op (keys %Option_Trans_Table) {
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$extra_options =~ s/\b$op\b// && do {
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$LyX_Preamble .= "$Option_Trans_Table{$op}\n";
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print "Document option $op\n" if $debug_on;
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}
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}
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$extra_options =~ s/^,+|,+(?=,)|,+$//g; # extra commas
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}
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# Convert any remaining options to an \options command
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if ($extra_options) {
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$LyX_Preamble .= "\\options $extra_options\n";
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print "extra options: $extra_options\n" if $debug_on;
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}
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# Now copy the whole preamble into the preamble of the LyX document
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# (unless there is no preamble)
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# Everything until the end of filehandle PREAMBLE is preamble matter
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my $Latex_Preamble = $_; # there COULD be a preamble command on same line
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my $write_preamble = (! /^\s*$/ && ! /^\s*%/);
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while (<PREAMBLE>) {
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$Latex_Preamble .= $_;
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# write an official preamble if we find anything that's not comment
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$write_preamble ||= (! /^\s*$/ && ! /^\s*%/);
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}
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if ($write_preamble) {
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$Latex_Preamble =~ s/^\s*//;
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print "LaTeX preamble, consists of:\n$Latex_Preamble" if $debug_on;
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$Latex_Preamble = "\\begin_preamble\n$Latex_Preamble\\end_preamble\n";
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print "End of LaTeX preamble\n" if $debug_on;
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} else {
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$Latex_Preamble = ""; #just comments, whitespace. Ignore them
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}
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#warn "Done creating LyX Preamble\n";
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return ($class, $LyX_Preamble, $Latex_Preamble);
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}
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1; # return true value to calling program
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