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#!/usr/bin/env perl
# $Id: check-execute-consistency 0 2007-10-14 20:32:44Z karl $
# Copyright 2007 Norbert Preining
# This file is licensed under the GNU General Public License version 2
# or any later version.
# 
# Check that files needed for execute statements are present

BEGIN {
  $^W = 1;
  ($mydir = $0) =~ s,/[^/]*$,,;
  unshift (@INC, "$mydir/..");
}

our $mydir;

use strict;

use TeXLive::TLConfig;
use TeXLive::TLUtils;
use TeXLive::TLPOBJ;
use TeXLive::TLPDB;
use Getopt::Long;
use Pod::Usage;
use File::Path;

my $help = 0;

process_logging_options();

GetOptions("help|?"       => \$help) or pod2usage(1);
pod2usage(-exitstatus => 0, -verbose => 2) if $help;

exit (&main ());

sub main
{
  # get the db.
  chomp (my $Master = `cd $mydir/../.. && pwd`);  # xx TLPDB should default
  my $tlpdb = TeXLive::TLPDB->new ("root" => "$Master");
  die("Cannot find tlpdb in $Master!\n") unless defined($tlpdb);
  my (%maps,%langcodes,%fmtlines);
  for my $pkg ($tlpdb->list_packages) {
    for my $e ($tlpdb->get_package($pkg)->executes) {
      if ($e =~ m/add(Mixed)?Map\s+(.*)$/) {
        my $foo = $2;
        chomp($foo);
        push @{$maps{$foo}}, $pkg;
      } elsif ($e =~ m/AddFormat\s+(.*)$/) {
        my $foo = $1;
        chomp($foo);
        push @{$fmtlines{$foo}}, $pkg;
      } elsif ($e =~ m/AddHyphen\s+.*\s+file=(\S+)\s*$/) {
        my $foo = $1;
        chomp($foo);
        push @{$langcodes{$foo}}, $pkg;
      } else {
        warn "$pkg: unmatched execute: $e\n";
      }
    }
  }
  my %badmaps;
  foreach my $mf (keys %maps) {
    my @found = $tlpdb->find_file($mf);
    if ($#found < 0) {
      $badmaps{$mf} = $maps{$mf};
    }
    if ($#found > 0) {
      # we want to check for multiple inclusions
      my %mapfn;
      foreach my $foo (@found) {
        $foo =~ m/^(.*):(.*)$/;
        push @{$mapfn{$2}}, $1;
      }
      foreach my $k (keys %mapfn) {
        my @bla = @{$mapfn{$k}};
        if ($#bla > 0) {
          warn "map file $mf occurs multiple times (in pkg @bla)!\n";
        }
      }
    }
  }
  if (keys %badmaps) {
    print "mentioned map file not occuring in any package:\n";
    foreach my $mf (keys %badmaps) {
      print "\t$mf (execute in @{$badmaps{$mf}})\n";
    }
  }
  my %badhyphcodes;
  my %problemhyphen;
  foreach my $lc (keys %langcodes) {
    next if ($lc eq "zerohyph.tex");
    my @found = $tlpdb->find_file("texmf-dist/tex/generic/hyph-utf8/loadhyph/$lc");
    if ($#found < 0) {
      # try again this time search all packages
      my @found = $tlpdb->find_file("$lc");
      if ($#found < 0) {
        $badhyphcodes{$lc} = $langcodes{$lc};
      } else {
        $problemhyphen{$lc} = [ @found ];
      }
    }
  }
  if (keys %badhyphcodes) {
    print "mentioned hyphen loaders without file:\n";
    foreach my $mf (keys %badhyphcodes) {
      print "\t$mf (execute in @{$badhyphcodes{$mf}})\n";
    }
  }
  # disable the echoing of problematic hyphens
  #if (keys %problemhyphen) {
  #  print "hyphen files with possible problematic location:\n";
  #  foreach my $mf (keys %problemhyphen) {
  #    print "\t$mf (@{$problemhyphen{$mf}})\n";
  #  }
  #}
  #
  # what should be checked for the executes? we could check 
  # - the existence of the engine in bin/i386-linux or all $arch
  # - the existence of the format name link/bat
  # - parse the options parameter and check for the inifile
  # - rework the format definition that we have inifile=pdflatex.ini 
  #   isn't the * unnecessary?
  my %missingbins;
  my %missingengines;
  my %missinginis;
  for (keys %fmtlines) {
    my %r = TeXLive::TLUtils::parse_AddFormat_line("$_");
    if (defined($r{"error"})) {
      die "$r{'error'}, parsing $_, package(s) @{$fmtlines{$_}}";
    }
    my $opt = $r{"options"};
    my $engine = $r{"engine"};
    my $name = $r{"name"};
    my $mode = $r{"mode"};
    # special case for cont-en ...
    next if ($name eq "cont-en");
    # we check that the name exist in bin/$arch
    for my $a ($tlpdb->available_architectures) {
      if (! -r "$Master/bin/$a/$name") {
        if (($a eq "win32") || ($a eq "i386-cygwin")) {
          if (! ( -r "$Master/bin/$a/$name.exe" || 
                  -r "$Master/bin/$a/$name.bat")) {
            push @{$missingbins{$_}}, "bin/$a/$name" if $mode;
          }
        } else {
          push @{$missingbins{$_}}, "bin/$a/$name" if $mode;
        }
      }
      if (! -r "$Master/bin/$a/$engine") {
        if (($a eq "win32") || ($a eq "i386-cygwin")) {
          if (! (-r "$Master/bin/$a/$engine.exe" ||
                 -r "$Master/bin/$a/$engine.bat")) {
            push @{$missingengines{$_}}, "bin/$a/$engine" if $mode;
          }
        } else {
          push @{$missingengines{$_}}, "bin/$a/$engine" if $mode;
        }
      }
    }
    # check for the existence of the .ini file
    # by using the last word in the options value
    my $inifile = $opt;
    # $inifile now contains "bla bla bla *file.ini"
    # strip initial and trailing "
    $inifile =~ s/^"(.*)"$/$1/;
    # remove everything before the last space
    $inifile =~ s/^.* ([^ ]*)$/$1/;
    # remove the optional leading *
    $inifile =~ s/^\*//;
    my @found = $tlpdb->find_file("$inifile");
    if ($#found < 0) {
      $missinginis{$_} = "$inifile";
    }
  }
  if (keys %missinginis) {
    print "mentioned ini files that cannot be found:\n";
    for my $i (keys %missinginis) {
      print "\t $missinginis{$i} (execute: $i)\n";
    }
  }
  if (keys %missingengines) {
    print "mentioned engine files that cannot be found:\n";
    for my $i (keys %missingengines) {
      print "\t @{$missingengines{$i}}\n";
    }
  }
  if (keys %missingbins) {
    print "mentioned bin files that cannot be found:\n";
    for my $i (keys %missingbins) {
      print "\t @{$missingbins{$i}}\n";
    }
  }
}



__END__

=head1 NAME

check-depend-consistency - check that all depends actually exist as packages

=head1 SYNOPSIS

check-depend-consistency

=head1 OPTIONS

There are no options bug C<-help>.

=head1 DESCRIPTION

See above

=head1 AUTHORS AND COPYRIGHT

This script and its documentation were written for the TeX Live
distribution (L<http://tug.org/texlive>) and both are licensed under the
GNU General Public License Version 2 or later.

=cut

### Local Variables:
### perl-indent-level: 2
### tab-width: 2
### indent-tabs-mode: nil
### End:
# vim:set tabstop=2 expandtab: #