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Diffstat (limited to 'doc/sbase/dist/fmt_txt.pl')
| -rw-r--r-- | doc/sbase/dist/fmt_txt.pl | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/doc/sbase/dist/fmt_txt.pl b/doc/sbase/dist/fmt_txt.pl new file mode 100644 index 0000000..81c2b15 --- /dev/null +++ b/doc/sbase/dist/fmt_txt.pl @@ -0,0 +1,287 @@ +# +# fmt_txt.pl +# +# $Id$ +# +# TXT-specific driver stuff +# +# © Copyright 1996, Cees de Groot +# +package SGMLTools::fmt_txt; +use strict; + +use File::Copy; +use Text::EntityMap; +use SGMLTools::CharEnts; +use SGMLTools::Lang; +use SGMLTools::Vars; + +my $txt = {}; +$txt->{NAME} = "txt"; +$txt->{HELP} = ""; +$txt->{OPTIONS} = [ + { option => "manpage", type => "f", short => "m" }, + { option => "filter", type => "f", short => "f" } +]; +$txt->{manpage} = 0; +$txt->{filter} = 0; + +$Formats{$txt->{NAME}} = $txt; + +# +# Set correct NsgmlsOpts +# +$txt->{preNSGMLS} = sub +{ + if ($txt->{manpage}) + { + $global->{NsgmlsOpts} .= " -iman "; + $global->{charset} = "man"; + } + else + { + $global->{NsgmlsOpts} .= " -ifmttxt "; + $global->{charset} = "latin1" if $global->{charset} eq "latin"; + } + + # + # Is there a cleaner solution than this? Can't do it earlier, + # would show up in the help messages... + # + $global->{format} = $global->{charset}; + $global->{format} = "groff" if $global->{format} eq "ascii"; + $ENV{SGML_SEARCH_PATH} =~ s/txt/$global->{format}/; + + $Formats{"groff"} = $txt; + $Formats{"latin1"} = $txt; + $Formats{"man"} = $txt; + + return 0; +}; + + +# Ascii escape sub. this is called-back by `parse_data' below in +# `txt_preASP' to properly escape `\' characters coming from the SGML +# source. +my $txt_escape = sub { + my ($data) = @_; + + $data =~ s|"|\\\&\"|g; # Insert zero-width space in front of " + $data =~ s|^\.|\\&.|; # ditto in front of . at start of line + $data =~ s|\\|\\\\|g; # Escape backslashes + + return ($data); +}; + +# +# Run the file through the genertoc utility before sgmlsasp. Not necessary +# when producing a manpage. A lot of code from FJM, untested by me. +# +$txt->{preASP} = sub +{ + my ($infile, $outfile) = @_; + my (@toc, @lines); + if ($txt->{manpage}) + { + copy ($infile, $outfile); + return; + } + + # note the conversion of `sdata_dirs' list to an anonymous array to + # make a single argument + my $char_maps = load_char_maps ('.2tr', [ Text::EntityMap::sdata_dirs() ]); + $char_maps = load_char_maps ('.2l1tr', [ Text::EntityMap::sdata_dirs() ]) if $global->{charset} eq "latin1"; + + # + # Build TOC. The file is read into @lines in the meantime, we need to + # traverse it twice. + # + push (@toc, "(HLINE\n"); + push (@toc, ")HLINE\n"); + push (@toc, "(P\n"); + push (@toc, "-" . Xlat ("Table of Contents") . "\n"); + push (@toc, ")P\n"); + push (@toc, "(VERB\n"); + my (@prevheader, @header); + while (<$infile>) + { + push (@lines, $_); + + if (/^\(SECT(.*)/) + { + @prevheader = @header; + @header = @header[0..$1]; + $header[$1]++; + } + if (/^\(HEADING/) + { + $_ = <$infile>; + push (@lines, $_); + chop; + s/^-//; + $_ = join(".",@header) . " " . $_; + s/\\n/ /g; + s/\(\\[0-9][0-9][0-9]\)/\\\1/g; + + if (!$#header) + { + # put a newline before top-level sections unless previous was also + # a top level section + $_ = "\\n" . $_ unless (!$#prevheader); + # put a . and a space after top level sections + s/ /. /; + $_ = "-" . $_ . "\\n"; + } + else + { + # subsections get indentation matching hierarchy + $_ = "-" . " " x $#header . $_; + } + push(@toc, parse_data ($_, $char_maps, $txt_escape), "\\n\n"); + } + } + push (@toc, ")VERB\n"); + push (@toc, "(HLINE\n"); + push (@toc, ")HLINE\n"); + + my $inheading = 0; + my $tipo = ''; + for (@lines) + { + if ($inheading) + { + next if (/^\)TT/ || /^\(TT/ || /^\)IT/ || /^\(IT/ || + /^\)EM/ || /^\(EM/ || /^\)BF/ || /^\(BF/); + if (/^-/) + { + $tipo .= $' ; + chop ($tipo); + $tipo .= " " unless $tipo =~ / $/; + } + else + { + $tipo =~ s/ $//; + if ($tipo) + { + print $outfile "-" + . parse_data ($tipo, $char_maps, $txt_escape) + . "\n"; + } + print $outfile $_; + $tipo = ''; + } + if (/^\)HEADING/) + { + $inheading = 0; + } + next; + } + if (/^\(HEADING/) + { + # + # Go into heading processing mode. + # + $tipo = ''; + $inheading = 1; + } + if (/^\(TOC/) + { + print $outfile @toc; + next; + } + if (/^-/) + { + my ($str) = $'; + chop ($str); + print $outfile "-" . parse_data ($str, $char_maps, $txt_escape) . "\n"; + next; + } + elsif (/^A/) + { + /^A(\S+) (IMPLIED|CDATA|NOTATION|ENTITY|TOKEN)( (.*))?$/ + || die "bad attribute data: $_\n"; + my ($name,$type,$value) = ($1,$2,$4); + if ($type eq "CDATA") + { + # CDATA attributes get translated also + $value = parse_data ($value, $char_maps, $txt_escape); + } + print $outfile "A$name $type $value\n"; + next; + } + + # + # Default action if not skipped over with next: copy in to out. + # + print $outfile $_; + } +}; + + +# +# Take the sgmlsasp output, and make something +# useful from it. +# +$txt->{postASP} = sub +{ + my $infile = shift; + my ($outfile, $groffout); + + if ($txt->{manpage}) + { + $outfile = new FileHandle ">$global->{filename}.man"; + } + else + { + $outfile = new FileHandle + "|$main::progs->{GROFF} -T $global->{pass} $global->{charset} -t $main::progs->{GROFFMACRO} >$global->{tmpbase}.txt.1"; + } + + # + # Feed $outfile with roff input. + # + while (<$infile>) + { + unless (/^\.DS/.../^\.DE/) + { + s/^[ \t]{1,}(.*)/$1/g; + } + s/^\.[ \t].*/\\\&$&/g; + s/\\fC/\\fR/g; + s/^.ft C/.ft R/g; + print $outfile $_; + } + $outfile->close; + + # + # If we were making a manpage, we're done. Otherwise, a little bit + # of work is left. + # + if ($txt->{manpage}) + { + return 0; + } + else + { + $outfile->open (">$global->{filename}.txt"); + $groffout = new FileHandle "<$global->{tmpbase}.txt.1"; + if ($txt->{filter}) + { + while (<$groffout>) + { + s/.//g; + print $outfile $_; + } + } + else + { + copy ($groffout, $outfile); + } + } + $groffout->close; + $outfile->close; + + return 0; +}; + +1; |