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bird/doc/LinuxDocTools.pm
Jan Moskyto Matejka 7152e5efbb Build system reworked to one global Makefile with includes and no nesting
Also removed the lib-dir merging with sysdep. Updated #include's
accordingly.

Fixed make doc on recent Debian together with moving generated doc into
objdir.

Moved Makefile.in into root dir

Retired all.o and birdlib.a
Linking the final binaries directly from all the .o files.
2016-05-10 14:07:34 +02:00

637 lines
16 KiB
Perl

#! /usr/bin/perl
#
# LinuxDocTools.pm
#
# $Id$
#
# LinuxDoc-Tools driver core. This contains all the basic functionality
# we need to control all other components.
#
# © Copyright 1996, Cees de Groot.
# © Copyright 2000, Taketoshi Sano
#
# THIS VERSION HAS BEEN HACKED FOR BIRD BY MARTIN MARES
#
package LinuxDocTools;
require 5.004;
use strict;
=head1 NAME
LinuxDocTools - SGML conversion utilities for LinuxDoc DTD.
=head1 SYNOPSIS
use LinuxDocTools;
LinuxDocTools::init;
@files = LinuxDocTools::process_options ($0, @ARGV);
for $curfile (@files) {
LinuxDocTools::process_file ($curfile);
}
=head1 DESCRIPTION
The LinuxDocTools package encapsulates all the functionality offered by
LinuxDoc-Tools. It is used, of course, by LinuxDoc-Tools;
but the encapsulation should provide for a simple interface for other users as well.
=head1 FUNCTIONS
=over 4
=cut
use DirHandle;
use File::Basename;
use File::Find;
use File::Copy;
use FileHandle;
use IPC::Open2;
use Cwd;
use LinuxDocTools::Lang;
use LinuxDocTools::Utils qw(process_options usage cleanup trap_signals remove_tmpfiles create_temp);
use LinuxDocTools::Vars;
sub BEGIN
{
#
# Make sure we're always looking here. Note that "use lib" adds
# on the front of the search path, so we first push dist, then
# site, so that site is searched first.
#
use lib "$main::DataDir/dist";
use lib "$main::DataDir/site";
}
=item LinuxDocTools::init
Takes care of initialization of package-global variables (which are actually
defined in L<LinuxDocTools::Vars>). The package-global variables are I<$global>,
a reference to a hash containing numerous settings, I<%Formats>, a hash
containing all the formats, and I<%FmtList>, a hash containing the currently
active formats for help texts.
Apart from this, C<LinuxDocTools::init> also finds all distributed and site-local
formatting backends and C<require>s them.
=cut
sub init
{
trap_signals;
#
# Register the ``global'' pseudoformat. Apart from the global settings,
# we also use $global to keep the global variable name space clean;
# everything that we need to provide to other modules is stuffed
# into $global.
#
$global = {};
$global->{NAME} = "global";
$global->{HELP} = "";
$global->{OPTIONS} = [
{ option => "backend", type => "l",
'values' => [ "html", "info", "latex",
"lyx", "rtf", "txt", "check" ],
short => "B" },
{ option => "papersize", type => "l",
'values' => [ "a4", "letter" ], short => "p" },
{ option => "language", type => "l",
'values' => [ @LinuxDocTools::Lang::Languages ], short => "l" },
{ option => "charset", type => "l",
'values' => [ "latin", "ascii", "nippon", "euc-kr" ], short => "c" },
{ option => "style", type => "s", short => "S" },
{ option => "tabsize", type => "i", short => "t" },
# { option => "verbose", type => "f", short => "v" },
{ option => "debug", type => "f", short => "d" },
{ option => "define", type => "s", short => "D" },
{ option => "include", type => "s", short => "i" },
{ option => "pass", type => "s", short => "P" }
];
$global->{backend} = "linuxdoc";
$global->{papersize} = "a4";
$global->{language} = "en";
$global->{charset} = "ascii";
$global->{style} = "";
$global->{tabsize} = 8;
$global->{verbose} = 0;
$global->{define} = "";
$global->{debug} = 0;
$global->{include} = "";
$global->{pass} = "";
$global->{InFiles} = [];
$Formats{$global->{NAME}} = $global; # All formats we know.
$FmtList{$global->{NAME}} = $global; # List of formats for help msgs.
# automatic language detection: disabled by default
# {
# my $lang;
# foreach $lang (@LinuxDocTools::Lang::Languages)
# {
# if (($ENV{"LC_ALL"} =~ /^$lang/i) ||
# ($ENV{"LC_CTYPE"} =~ /^$lang/i) ||
# ($ENV{"LANG"} =~ /^$lang/i)) {
# $global->{language} = Any2ISO($lang);
# }
# }
# }
#
# Used when the format is "global" (from sgmlcheck).
#
$global->{preNSGMLS} = sub {
$global->{NsgmlsOpts} .= " -s ";
$global->{NsgmlsPrePipe} = "cat $global->{file}";
};
#
# Build up the list of formatters.
#
my $savdir = cwd;
my %Locs;
chdir "$main::DataDir/dist";
my $dir = new DirHandle(".");
die "Unable to read directory $main::DataDir/dist: $!" unless defined($dir);
foreach my $fmt (grep(/^fmt_.*\.pl$/, $dir->read()))
{
$Locs{$fmt} = "dist";
}
$dir->close();
chdir "$main::DataDir/site";
$dir = new DirHandle(".");
die "Unable to read directory $main::DataDir/site: $!" unless defined($dir);
foreach my $fmt (grep(/^fmt_.*\.pl$/, $dir->read()))
{
$Locs{$fmt} = "site";
}
$dir->close();
foreach my $fmt (keys %Locs)
{
require $fmt;
}
chdir $savdir;
}
=item LinuxDocTools::process_options ($0, @ARGV)
This function contains all initialization that is bound to the current
invocation of LinuxDocTools. It looks in C<$0> to deduce the backend that
should be used (ld2txt activates the I<txt> backend) and parses the
options array. It returns an array of filenames it encountered during
option processing.
As a side effect, the environment variables I<SGMLDECL> and
I<SGML_CATALOG_FILES> are modified.
=cut
sub process_options
{
my $progname = shift;
my @args = @_;
#
# Deduce the format from the caller's file name
#
my ($format, $dummy1, $dummy2) = fileparse ($progname, "");
$global->{myname} = $format;
$format =~ s/sgml2*(.*)/$1/;
#
# check the option "--backend / -B"
#
if ($format eq "linuxdoc") {
my @backends = @args;
my $arg;
while (@backends) {
$arg = shift @backends;
if ($arg eq "-B") {
$arg = shift @backends;
$format = $arg;
last;
}
if ( $arg =~ s/--backend=(.*)/$1/ ) {
$format = $arg;
last;
}
}
}
$format = "global" if $format eq "check";
usage ("") if $format eq "linuxdoc";
$format = "latex2e" if $format eq "latex";
$FmtList{$format} = $Formats{$format} or
usage ("$global->{myname}: unknown format");
$global->{format} = $format;
#
# Parse all the options.
#
my @files = LinuxDocTools::Utils::process_options (@args);
$global->{language} = Any2ISO ($global->{language});
#
# check the number of given files
$#files > -1 || usage ("no filenames given");
#
# Setup the SGML environment.
# (Note that Debian package rewrite path to catalog of
# iso-entities using debian/rules so that it can use
# entities from sgml-data pacakge. debian/rules also
# removes iso-entites sub directory after doing make install.)
#
$ENV{SGML_CATALOG_FILES} .= (defined $ENV{SGML_CATALOG_FILES} ? ":" : "") .
"$main::prefix/share/sgml/entities/sgml-iso-entities-8879.1986/catalog";
$ENV{SGML_CATALOG_FILES} .= ":$main::DataDir/linuxdoc-tools.catalog";
$ENV{SGML_CATALOG_FILES} .= ":$main::/etc/sgml.catalog";
if (-f "$main::DataDir/dtd/$format.dcl")
{
$ENV{SGMLDECL} = "$main::DataDir/dtd/$format.dcl";
}
elsif (-f "$main::DataDir/dtd/$global->{style}.dcl")
{
$ENV{SGMLDECL} = "$main::DataDir/dtd/$global->{style}.dcl";
}
elsif (-f "$main::DataDir/dtd/sgml.dcl")
{
$ENV{SGMLDECL} = "$main::DataDir/dtd/sgml.dcl";
}
#
# OK. Give the list of files we distilled from the options
# back to the caller.
#
return @files;
}
=item LinuxDocTools::process_file
With all the configuration done, this routine will take a single filename
and convert it to the currently active backend format. The conversion is
done in a number of steps in tight interaction with the currently active
backend (see also L<LinuxDocTools::BackEnd>):
=over
=item 1. Backend: set NSGMLS options and optionally create a pre-NSGMLS pipe.
=item 2. Here: Run the preprocessor to handle conditionals.
=item 3. Here: Run NSGMLS.
=item 4. Backend: run pre-ASP conversion.
=item 5. Here: Run SGMLSASP.
=item 6. Backend: run post-ASP conversion, generating the output.
=back
All stages are influenced by command-line settings, currently active format,
etcetera. See the code for details.
=cut
sub process_file
{
my $file = shift (@_);
my $saved_umask = umask;
print "Processing file $file\n";
umask 0077;
my ($filename, $filepath, $filesuffix) = fileparse ($file, "\.sgml");
my $tmpnam = $filepath . '/' . $filename;
$file = $tmpnam . $filesuffix;
-f $file || $file =~ /.*.sgml$/ || ($file .= '.sgml');
-f $file || ($file = $tmpnam . '.SGML');
-f $file || die "Cannot find $file\n";
$global->{filename} = $filename;
$global->{file} = $file;
$global->{filepath} = $filepath;
my $tmp = new FileHandle "<$file";
my $dtd;
while ( <$tmp> )
{
tr/A-Z/a-z/;
# check for [<!doctype ... system] type definition
if ( /<!doctype\s*(\w*)\s*system/ )
{
$dtd = $1;
last;
}
# check for <!doctype ... PUBLIC ... DTD ...
if ( /<!doctype\s*\w*\s*public\s*.*\/\/dtd\s*(\w*)/mi )
{
$dtd = $1;
last;
}
# check for <!doctype ...
# PUBLIC ... DTD ...
# (multi-line version)
if ( /<!doctype\s*(\w*)/ )
{
$dtd = "precheck";
next;
}
if ( /\s*public\s*.*\/\/dtd\s*(\w*)/ && $dtd eq "precheck" )
{
$dtd = $1;
last;
}
}
$tmp->close;
if ( $global->{debug} )
{
print "DTD: " . $dtd . "\n";
}
$global->{dtd} = $dtd;
# prepare temporary directory
my $tmpdir = $ENV{'TMPDIR'} || '/tmp';
$tmpdir = $tmpdir . '/' . 'linuxdoc-dir-' . $$;
mkdir ($tmpdir, 0700) ||
die " - temporary files can not be created, aborted - \n";
my $tmpbase = $global->{tmpbase} = $tmpdir . '/sgmltmp.' . $filename;
$ENV{"SGML_SEARCH_PATH"} .= ":$filepath";
#
# Set up the preprocessing command. Conditionals have to be
# handled here until they can be moved into the DTD, otherwise
# a validating SGML parser will choke on them.
#
# check if output option for latex is pdf or not
if ($global->{format} eq "latex2e")
{
if ($Formats{$global->{format}}{output} eq "pdf")
{
$global->{define} .= " pdflatex=yes";
}
}
#
local $ENV{PATH} = "$ENV{PATH}:/usr/lib/linuxdoc-tools";
my($precmd) = "|sgmlpre output=$global->{format} $global->{define}";
#
# You can hack $NsgmlsOpts here, etcetera.
#
$global->{NsgmlsOpts} .= "-D $main::prefix/share/sgml -D $main::DataDir";
$global->{NsgmlsOpts} .= "-i$global->{include}" if ($global->{include});
$global->{NsgmlsPrePipe} = "NOTHING";
if ( defined $Formats{$global->{format}}{preNSGMLS} )
{
$global->{NsgmlsPrePipe} = &{$Formats{$global->{format}}{preNSGMLS}};
}
#
# Run the prepocessor and nsgmls.
#
my ($ifile, $writensgmls);
if ($global->{NsgmlsPrePipe} eq "NOTHING")
{
$ifile = new FileHandle $file;
}
else
{
$ifile = new FileHandle "$global->{NsgmlsPrePipe}|";
}
create_temp("$tmpbase.1");
$writensgmls = new FileHandle
"$precmd|$main::progs->{NSGMLS} $global->{NsgmlsOpts} $ENV{SGMLDECL} >\"$tmpbase.1\"";
if ($global->{charset} eq "latin")
{
while (<$ifile>)
{
# Outline these commands later on - CdG
#change latin1 characters to SGML
#by Farzad Farid, adapted by Greg Hankins
s/À/\&Agrave;/g;
s/Á/\&Aacute;/g;
s/Â/\&Acirc;/g;
s/Ã/\&Atilde;/g;
s/Ä/\&Auml;/g;
s/Å/\&Aring;/g;
s/Æ/\&AElig;/g;
s/Ç/\&Ccedil;/g;
s/È/\&Egrave;/g;
s/É/\&Eacute;/g;
s/Ê/\&Ecirc;/g;
s/Ë/\&Euml;/g;
s/Ì/\&Igrave;/g;
s/Í/\&Iacute;/g;
s/Î/\&Icirc;/g;
s/Ï/\&Iuml;/g;
s/Ñ/\&Ntilde;/g;
s/Ò/\&Ograve;/g;
s/Ó/\&Oacute;/g;
s/Ô/\&Ocirc;/g;
s/Õ/\&Otilde;/g;
s/Ö/\&Ouml;/g;
s/Ø/\&Oslash;/g;
s/Ù/\&Ugrave;/g;
s/Ú/\&Uacute;/g;
s/Û/\&Ucirc;/g;
s/Ü/\&Uuml;/g;
s/Ý/\&Yacute;/g;
s/Þ/\&THORN;/g;
s/ß/\&szlig;/g;
s/à/\&agrave;/g;
s/á/\&aacute;/g;
s/â/\&acirc;/g;
s/ã/\&atilde;/g;
s/ä/\&auml;/g;
s/å/\&aring;/g;
s/æ/\&aelig;/g;
s/ç/\&ccedil;/g;
s/è/\&egrave;/g;
s/é/\&eacute;/g;
s/ê/\&ecirc;/g;
s/ë/\&euml;/g;
s/ì/\&igrave;/g;
s/í/\&iacute;/g;
s/î/\&icirc;/g;
s/ï/\&iuml;/g;
s/µ/\&mu;/g;
s/ð/\&eth;/g;
s/ñ/\&ntilde;/g;
s/ò/\&ograve;/g;
s/ó/\&oacute;/g;
s/ô/\&ocirc;/g;
s/õ/\&otilde;/g;
s/ö/\&ouml;/g;
s/ø/\&oslash;/g;
s/ù/\&ugrave;/g;
s/ú/\&uacute;/g;
s/û/\&ucirc;/g;
s/ü/\&uuml;/g;
s/ý/\&yacute;/g;
s/þ/\&thorn;/g;
s/ÿ/\&yuml;/g;
print $writensgmls $_;
}
}
else
{
while (<$ifile>)
{
print $writensgmls $_;
}
}
$ifile->close;
$writensgmls->close;
#
# Special case: if format is global, we're just checking.
#
$global->{format} eq "global" && cleanup;
#
# If the output file is empty, something went wrong.
#
! -e "$tmpbase.1" and die "can't create file - exiting";
-z "$tmpbase.1" and die "SGML parsing error - exiting";
if ( $global->{debug} )
{
print "Nsgmls stage finished.\n";
}
#
# If a preASP stage is defined, let the format handle it.
#
# preASP ($inhandle, $outhandle);
#
my $inpreasp = new FileHandle "<$tmpbase.1";
my $outpreasp = new FileHandle "$tmpbase.2",O_WRONLY|O_CREAT|O_EXCL,0600;
if (defined $Formats{$global->{format}}{preASP})
{
&{$Formats{$global->{format}}{preASP}}($inpreasp, $outpreasp) == 0 or
die "error pre-processing $global->{format}.\n";
}
else
{
copy ($inpreasp, $outpreasp);
}
$inpreasp->close;
$outpreasp->close;
! -e "$tmpbase.2" and die "can't create file - exiting";
if ( $global->{debug} )
{
print "PreASP stage finished.\n";
}
#
# Run sgmlsasp, with an optional style if specified.
#
# Search order:
# - datadir/site/<dtd>/<format>
# - datadir/dist/<dtd>/<format>
# So we need to fetch the doctype from the intermediate.
#
# Note: this is a very simplistic check - but as far as I know,
# it is correct. Am I right?
#
my $tmp = new FileHandle "<$tmpbase.2";
my $dtd;
while ( ($dtd = <$tmp>) && ! ( $dtd =~ /^\(/) ) { };
$tmp->close;
$dtd =~ s/^\(//;
$dtd =~ tr/A-Z/a-z/;
chop $dtd;
$global->{dtd} = $dtd;
my $style = "";
if ($global->{style})
{
$style = "$main::DataDir/site/$dtd/$global->{format}/$global->{style}mapping";
-r $style or
$style = "$main::DataDir/dist/$dtd/$global->{format}/$global->{style}mapping";
}
my $mapping = "$main::DataDir/site/$dtd/$global->{format}/mapping";
-r $mapping or $mapping = "$main::DataDir/dist/$dtd/$global->{format}/mapping";
$global->{charset} = "nippon" if ($global->{language} eq "ja");
#
# we don't have Korean groff so charset should be latin1.
#
if ($global->{language} eq "ko")
{
if ($global->{format} eq "groff")
{
$global->{charset} = "latin1";
}
else
{
$global->{charset} = "euc-kr";
}
}
if ($global->{format} eq "groff" or $global->{format} eq "latex2e")
{
if ($dtd eq "linuxdoctr")
{
$mapping = "$main::DataDir/dist/$dtd/$global->{format}/tr-mapping";
}
}
create_temp("$tmpbase.3");
system ("$main::progs->{SGMLSASP} $style $mapping <\"$tmpbase.2\" |
expand -$global->{tabsize} >\"$tmpbase.3\"");
! -e "$tmpbase.3" and die "can't create file - exiting";
if ( $global->{debug} )
{
print "ASP stage finished.\n";
}
#
# If a postASP stage is defined, let the format handle it.
# It should leave whatever it thinks is right based on $file.
#
# postASP ($inhandle)
#
umask $saved_umask;
my $inpostasp = new FileHandle "<$tmpbase.3";
if (defined $Formats{$global->{format}}{postASP})
{
&{$Formats{$global->{format}}{postASP}}($inpostasp) == 0 or
die "error post-processing $global->{format}.\n";
}
$inpostasp->close;
if ( $global->{debug} )
{
print "postASP stage finished.\n";
}
#
# All done, remove the temporaries.
#
if( !$global->{debug} ) {
remove_tmpfiles($tmpbase);
}
}
=pod
=back
=head1 SEE ALSO
Documentation for various sub-packages of LinuxDocTools.
=head1 AUTHOR
SGMLTools are written by Cees de Groot, C<E<lt>cg@cdegroot.comE<gt>>,
and various SGML-Tools contributors as listed in C<CONTRIBUTORS>.
Taketoshi Sano C<E<lt>sano@debian.org<gt>> rename to LinuxDocTools.
=cut
1;