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#!/usr/bin/perl --
#
# Clean up the mess that bogus install-info may have done :
#
# - gather all sections with the same heading into a single one.
# Tries to be smart about cases and trailing colon/spaces.
#
# Other clean ups :
#
# - remove empty sections,
# - squeeze blank lines (in entries part only).
#
# Order of sections is preserved (the first encountered section
# counts).
#
# Order of entries within a section is preserved.
#
# BUGS:
#
# Probably many : I just recently learned Perl for this program
# using the man pages. Hopefully this is a short enough program to
# debug.
# don't put that in for production.
# use strict;
my $version = '1.1.6'; # This line modified by Makefile
sub version {
print STDERR <<END;
Debian cleanup-info $version. Copyright (C)1996 Kim-Minh Kaplan.
This is free software; see the GNU General Public Licence
version 2 or later for copying conditions. There is NO warranty.
END
}
sub usage {
print STDERR <<'EOF';
usage: cleanup-info [--version] [--help] [--unsafe] [--] [<dirname>]
Warning: the ``--unsafe'' option may garble an otherwise correct file
EOF
}
my $infodir = '/usr/info';
my $unsafe = 0;
$0 =~ m|[^/]+$|;
my $name= $&;
sub ulquit {
unlink "$infodir/dir.lock"
or warn "$name: warning - unable to unlock $infodir/dir: $!\n";
die $_[0];
}
while (scalar @ARGV > 0 && $ARGV[0] =~ /^--/) {
$_ = shift;
/^--$/ and last;
/^--version$/ and do {
version;
exit 0;
};
/^--help$/ and do {
usage;
exit 0;
};
/^--unsafe$/ and do {
$unsafe=1;
next;
};
print STDERR "$name: unknown option \`$_'\n";
usage;
exit 1;
}
if (scalar @ARGV > 0) {
$infodir = shift;
if (scalar @ARGV > 0) {
print STDERR "$name: too many arguments\n";
usage;
exit 1;
}
}
if (!link "$infodir/dir", "$infodir/dir.lock") {
die "$name: failed to lock dir for editing! $!\n".
($! =~ /exist/i ? "try deleting $infodir/dir.lock\n" : '');
}
open OLD, "$infodir/dir" or ulquit "$name: can't open $infodir/dir: $!\n";
open OUT, ">$infodir/dir.new"
or ulquit "$name can't create $infodir/dir.new: $!\n";
my (%sections, @section_list, $lastline);
my $section="Miscellaneous"; # default section
my $section_canonic="miscellaneous";
my $waitfor = $unsafe ? '^\*.*:' : '^\*\s*Menu';
while (<OLD>) { # dump the non entries part
last if (/$waitfor/oi);
if (defined $lastline) {
print OUT $lastline
or ulquit "$name: error writing $infodir/dir.new: $!\n";
}
$lastline = $_;
};
if (/^\*\s*Menu\s*:?/i) {
print OUT $lastline if defined $lastline;
print OUT $_;
} else {
print OUT "* Menu:\n";
if (defined $lastline) {
$lastline =~ s/\s*$//;
if ($lastline =~ /^([^\*\s].*)/) { # there was a section title
$section = $1;
$lastline =~ s/\s*:$//;
$section_canonic = lc $lastline;
}
}
push @section_list, $section_canonic;
s/\s*$//;
$sections{$section_canonic} = "\n$section\n$_\n";
}
foreach (<OLD>) { # collect sections
next if (/^\s*$/ or $unsafe and /^\*\s*Menu/oi);
s/\s*$//;
if (/^([^\*\s].*)/) { # change of section
$section = $1;
s/\s*:$//;
$section_canonic = lc $_;
} else { # add to section
if (! exists $sections{$section_canonic}) { # create section header
push @section_list, $section_canonic;
$sections{$section_canonic} = "\n$section\n";
}
$sections{$section_canonic} .= "$_\n";
}
}
eof OLD or ulquit "$name: read $infodir/dir: $!\n";
close OLD or ulquit "$name: close $infodir/dir after read: $!\n";
print OUT @sections{@section_list};
close OUT or ulquit "$name: error closing $infodir/dir.new: $!\n";
# install clean version
unlink "$infodir/dir.old";
link "$infodir/dir", "$infodir/dir.old"
or ulquit "$name: can't backup old $infodir/dir, giving up: $!\n";
rename "$infodir/dir.new", "$infodir/dir"
or ulquit "$name: failed to install $infodir/dir; I'll leave it as $infodir/dir.new: $!\n";
unlink "$infodir/dir.lock"
or die "$name: failed to unlock $infodir/dir: $!\n";
exit 0;
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