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27de1486ca
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@140 a592a061-630c-0410-9148-cb99ea01b6c8
359 lines
13 KiB
Perl
359 lines
13 KiB
Perl
#!/usr/bin/perl -w
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#
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# Main code for reLyX - the LaTeX to LyX translator
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#
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# reLyX is 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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#
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# This code usually gets called by the reLyX wrapper executable
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#
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# $Id: reLyXmain.pl,v 1.1 1999/09/27 18:44:35 larsbj Exp $
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#
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require 5.002; # Perl 5.001 doesn't work. Perl 4 REALLY doesn't work.
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# Standard Perl Library modules
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use strict; # must define all variables, no barewords, no hard references
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# Variables from other files, like Getopt::Std, OR vars that need to be global
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# $opt_f etc. - command line options set by Getop::Std::getopts
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# $dot_lyxdir - the user's personal .lyx directory
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# $Success - keep track of whether reLyX finished successfully or died
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# @File_List - the list of files to translate. Initially this is just
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# the file input by the user, but \input or \include commands
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# will add to it.
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use vars qw($opt_c $opt_d $opt_f $opt_h $opt_n $opt_o $opt_p $opt_r $opt_s
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$dot_lyxdir
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$Success
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@File_List
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);
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use Cwd; # getcwd etc.
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use Getopt::Std; # read in command-line options
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use File::Basename; # &basename and &dirname
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# Modules containing subroutines for reLyX
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# Note that @INC must include the directory that these modules are in. The
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# reLyX wrapper takes care of that.
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use Text::TeX; # TeX parser package
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use ReadCommands; # package to read LaTeX commands' syntax from a file
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use MakePreamble; # package to split off LaTeX preamble & translate it to LyX
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use CleanTeX; # package to clean TeX file for Lyxifying
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use BasicLyX; # package to translate clean TeX to Basic LyX
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use LastLyX; # package to print out LyX file once all translation is done
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# Hack to allow running reLyX without the wrapper
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if (!defined($lyxdir)) {$lyxdir = "/usr/local/share/lyx"}
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if (!defined($lyxname)) {$lyxname = "lyx"}
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# there's a use vars in the wrapper, so we only need these if running w/out it
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use vars qw($lyxdir $lyxname);
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# variables that a user might want to change
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my @Suffix_List = '\.(ltx|latex|tex)'; # allowed suffixes for LaTeX file
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my $LyXFormat = "2.15"; #What to print in \lyxformat command in .lyx file
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my $syntaxname = "syntax.default"; # name of the default syntax file
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$dot_lyxdir = $ENV{'HOME'} . "/.$lyxname"; # personal .lyx directory
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# This variable tells us if the program died or exited happily
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BEGIN{$Success = 0}
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##############################################################################
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# MAIN
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#
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# Print welcome message including version info
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my $version_info = '$Date: 1999/09/27 18:44:35 $'; # RCS puts checkin date here
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$version_info =~ s&.*?(\d+/\d+/\d+).*&$1&; # take out just the date info
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warn "reLyX, the LaTeX to LyX translator. Revision date $version_info\n\n";
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# Usage information
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my $Usage_Short = <<"ENDSHORTUSAGE";
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USAGE:
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$0 [ -c textclass ] [ -fd ] [ -o outputdir ]
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[ -r renv1[,renv2...]] [ -s sfile1[,sfile2...]] inputfile
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$0 -p -c textclass [ -fd ] [ -o outputdir ]
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[ -r renv1[,renv2...]] [ -s sfile1[,sfile2...]] inputfile(s)
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$0 -h (to get more usage information)
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ENDSHORTUSAGE
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my $Usage_Long = $Usage_Short . <<"ENDLONGUSAGE";
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-c which textclass this file is (required with -p)
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Overrides \\documentclass command, if one exists
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-d print lots of debug information & save temporary files
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-f force destruction of existing lyx file or temporary files
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-h print this message and quit
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-n convert a noweb file to a literate document (requires -c)
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-o output all LyX files to directory "outputdir"
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Otherwise, LyX file is created in directory the LaTeX file is in
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-p translate LaTeX fragments or include files (requires -c)
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I.e., files without \documentclass commands
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-r give reLyX a (list of) regular environment(s)
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-s give reLyX a (list of) additional syntax file(s) to read
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man reLyX for lots of usage information
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ENDLONGUSAGE
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# Read command line
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# Get Options: set $opt_f etc. based on command line options
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getopts('c:dfhno:pr:s:') or die "Illegal option!$Usage_Short";
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if ($opt_h) {print $Usage_Long; $Success=1; exit}
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die "No LaTeX file was input on the command line$Usage_Short" unless @ARGV;
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# Make each file in the file list an absolute file name (e.g., staring with '/')
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@File_List = map {&abs_file_name($_)} @ARGV;
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# If noweb files, then we need to pre-process each file
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if (defined $opt_n) {
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die "-n option requires -c!$Usage_Short" unless defined $opt_c;
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foreach (@File_List) {
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system("noweb2lyx", "-pre", "$_", "$_.pre$$");
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$_ .= ".pre$$";
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}
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}
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# -p option allows multiple input files
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if (defined $opt_p) {
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die "-p option requires -c!$Usage_Short" unless defined $opt_c;
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} else {
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die "Only one input file allowed unless using -p option$Usage_Short"
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unless @ARGV == 1;
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}
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# Make sure outputdir given with -o option is valid
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# Make it an absolute path, too!
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if (defined($opt_o)) {
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die "directory $opt_o doesn't exist!\n$Usage_Short"
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unless defined(-d $opt_o);
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die "$opt_o isn't a directory!\n$Usage_Short" unless -d $opt_o;
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$opt_o = &my_fast_abs_path($opt_o);
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# may not have trailing slash.
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$opt_o .= '/' unless $opt_o =~ /\/$/;
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}
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# Read file(s) containing LaTeX commands and their syntax
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# Read personal syntax.default, or system-wide if there isn't a personal one
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# Then read other syntax files, given by the -s option
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my $default_file = "$dot_lyxdir/reLyX/$syntaxname";
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if (! -e $default_file) {
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$default_file = "$lyxdir/reLyX/$syntaxname";
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die "cannot find default syntax file $default_file" unless -e $default_file;
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}
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my @syntaxfiles = ($default_file);
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push (@syntaxfiles, (split(/,/,$opt_s))) if defined $opt_s;
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&ReadCommands::read_syntax_files(@syntaxfiles);
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########### Main loop over files (include files will be added to @File_List)
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my $count=0; #number of files we've done
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my @deletelist = (); # files to delete when we're done (if no '-d' flag)
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my $Doc_Class; # LaTeX documentclass
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my $LyX_Preamble = ""; # LyX Preamble not including Latex preamble part
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my $Latex_Preamble = "";
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my $File;
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while ($File = shift(@File_List)) {
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# TODO we should always die (or something) if temp files exist & !opt_f
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my $OutFileName;
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my $filenum = 0; #numbering for temporary files
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# May need to add ".tex" to input file name.
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# PathBase is the output file name without ".lyx". It's used for building
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# temporary files' file names, too.
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# Finally, make sure the file is valid, directory is writable, etc.
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# Sub returns (undef, undef, undef) if something goes wrong.
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my ($InFileDir, $InFileName, $PathBase) = &test_file($File);
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# Change to the input file's directory, so that if the input file has an
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# \include{../foo} in it, we'll find the included file.
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# Did something go wrong?
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unless (defined($InFileDir) && chdir($InFileDir)) {
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# main file must be ok; for included files or file fragments, just warn
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next if ($count || $opt_p);
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die "\n"; # printed error already
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}
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# OK. Start parsing the file!
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print STDERR "In Directory $InFileDir\n" if $opt_d;
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print STDERR "($InFileName: ";
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# Read preamble and calculate document class if necessary
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# (It's necessary when we're doing the first file.)
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unless ($count) {
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if ($opt_p) { # it's a partial file
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$Doc_Class = $opt_c;
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} else {
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# Split the preamble off of the rest of the file
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my $PreambleName = $PathBase . ".relyx" . ++$filenum;
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$OutFileName = $PathBase . ".relyx" . ++$filenum;
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push @deletelist, $OutFileName, $PreambleName;
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&MakePreamble::split_preamble($InFileName,
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$PreambleName, $OutFileName);
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$InFileName = $OutFileName;
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# Now read and translate the LaTeX preamble into LyX
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# Return document's class so we know which layout file(s) to read
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# Also return LyX preamble in a string, for later
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($Doc_Class, $LyX_Preamble, $Latex_Preamble) =
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&MakePreamble::translate_preamble($PreambleName, $LyXFormat);
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} # end partial file if
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# Read file(s) containing the valid LyX layouts for this documentclass
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# and their LaTeX command/environment equivalents
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&ReadCommands::read_layout_files($Doc_Class);
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}
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# Clean the TeX file (not including its preamble)
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$OutFileName = $PathBase . ".relyx" . ++$filenum;
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push @deletelist, $OutFileName;
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&CleanTeX::call_parser($InFileName, $OutFileName);
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# Now convert basic constructs in the cleaned TeX file to LyX constructs
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$InFileName = $OutFileName;
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$OutFileName = $PathBase . ".relyx" . ++$filenum;
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push @deletelist, $OutFileName;
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&BasicLyX::call_parser($InFileName, $OutFileName);
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# Final cleanup step for noweb files
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if (defined $opt_n) {
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$InFileName = $OutFileName;
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$OutFileName = $PathBase . ".relyx" . ++$filenum;
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push @deletelist, $OutFileName;
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system("noweb2lyx", "-post", $InFileName, $OutFileName);
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}
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# Finally, print out the actual LyX file including the preamble
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# For the *first* file, print out the LaTeX preamble too
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$InFileName = $OutFileName;
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if (defined $opt_n) {
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push @deletelist, $PathBase;
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$PathBase =~ s/.pre$$//;
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}
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$OutFileName = $PathBase . ".lyx";
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my $preamble = $count ? $LyX_Preamble : $LyX_Preamble . $Latex_Preamble;
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&LastLyX::last_lyx($InFileName, $OutFileName, $preamble);
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warn ")\n";
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} continue {
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$count++;
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} # END MAIN WHILE LOOP
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# Cleanup
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unless ($opt_d) {
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warn "Deleting temp files\n";
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unlink @deletelist;
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}
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$Success = 1;
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exit;
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# If we "die", output a sad message
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END{
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if ($Success) {
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warn "Finished successfully!\n";
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} else {
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warn "Exited due to fatal Error!\n";
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}
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}
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##################### SUBROUTINES ###########################################
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# Input: File (including absolute path)
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# Output: input file directory (absolute path)
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# input file name (".tex" added if necessary) without path
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# PathBase, the output file name (including path) without ".lyx" ending
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# Returns (undef, undef, undef) if something breaks
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#
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# Only allow certain suffixes
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# Test for things, like writability of output directory, existence of
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# .lyx file we would be creating...
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sub test_file {
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my $File = shift;
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my @return_error = (undef, undef, undef);
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# Get file names, set up for making different temporary files
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# fileparse_set_fstype("MSDOS") for DOS support!
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my ($in_basename, $in_path, $suffix) = fileparse($File, @Suffix_List);
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#$path .= '/' unless $path =~ /\/$/; # fix BUG in perl5.002 fileparse!
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# Try adding .tex to filename if you can't find the file the user input
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unless (-e $File) {
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if (! $suffix) { # didn't have a valid suffix. Try adding one
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if (-e "$File.tex") {
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$suffix = ".tex";
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} else {
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warn "\nCan't find input file $File or $File.tex\n";
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return @return_error;
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}
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} else { # it had a valid suffix, but the file doesn't exist
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warn "\nCan't find input file $File\n";
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return @return_error;
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}
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}
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my $in_filename = $in_basename . $suffix;
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# Make sure directory is valid
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# Note that we chdir to an input file's directory before translating it.
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# Therefore, unless the -o option is given, we want to output files in '.'
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#
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# TODO if file foo.tex includes a/bar.tex and b/bar.tex, then with the
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# -o option things will get ugly. We could test for that and create a name
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# (like relyx-1-12345-bar.tex) for the second (and later!) bar.tex file(s)
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my $out_path = defined $opt_o ? $opt_o : "./";
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unless (-w $out_path) { # Note: "" isn't writable!
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warn "\nDirectory $out_path isn't writable!\n";
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return @return_error;
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}
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$out_path =~ s(^./)(); # "foo" is more readable than "./foo"
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# This will be used for creating LyX file as well as temp files
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my $PathBase = $out_path . $in_basename;
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# Check for files that already exist
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my $lname = $PathBase . ".lyx";
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if (-e $lname) {
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if ($opt_f) {
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warn "Will overwrite file $lname\n" if $opt_d;
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} else {
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warn "\nLyX file $lname already exists. Use -f to overwrite\n";
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return @return_error;
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}
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}
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return ($in_path, $in_filename, $PathBase);
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} # end sub test_file
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sub abs_file_name {
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my $File = shift;
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my ($basename, $path, $suffix) = fileparse($File, @Suffix_List);
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my $realpath = &my_fast_abs_path($path);
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# add / at end
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$realpath .= '/' unless $realpath =~ /\/$/;
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my $name = "$realpath$basename$suffix";
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return $name;
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}
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# Stole this from Cwd.pm. Can't use the Cwd:: function cuz it's not in 5.003
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# I could test $] >5.004 or something, but why bother?
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sub my_fast_abs_path {
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my $cwd = fastcwd();
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my $path = shift || '.';
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chdir($path) || die "Cannot chdir to $path:$!";
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my $realpath = fastcwd();
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chdir($cwd) || die "Cannot chdir back to $cwd:$!";
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$realpath;
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}
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1; # return "true" to the wrapper
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