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# ex:ts=8 sw=4:
# $OpenBSD: Makewhatis.pm,v 1.6 2007/08/22 15:50:05 espie Exp $
# Copyright (c) 2000-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::Makewhatis;
my ($picky, $testmode);
# $subjects = scan_manpages(\@list)
#
# scan a set of manpages, return list of subjects
#
sub scan_manpages($)
{
my $list = shift;
local $_;
my $done=[];
for (@$list) {
my ($file, $subjects);
if (m/\.(?:Z|gz)$/) {
unless (open $file, '-|', "gzip -fdc $_") {
warn "$0: Can't decompress $_\n";
next;
}
$_ = $`;
} else {
unless (open $file, '<', $_) {
warn "$0: Can't read $_\n";
next;
}
}
if (m/\.(?:[1-9ln][^.]*|tbl)$/) {
require OpenBSD::Makewhatis::Unformated;
$subjects = OpenBSD::Makewhatis::Unformated::handle($file, $_);
} elsif (m/\.0$/) {
require OpenBSD::Makewhatis::Formated;
$subjects = OpenBSD::Makewhatis::Formated::handle($file, $_);
# in test mode, we try harder
} elsif ($testmode) {
require OpenBSD::Makewhatis::Unformated;
$subjects = OpenBSD::Makewhatis::Unformated::handle($file, $_);
if (@$subjects == 0) {
require OpenBSD::Makewhatis::Formated;
$subjects = OpenBSD::Makewhatis::Formated::handle($file, $_);
}
} else {
print STDERR "Can't find type of $_\n";
next;
}
if ($picky) {
require OpenBSD::Makewhatis::Check;
for my $s (@$subjects) {
OpenBSD::Makewhatis::Check::verify_subject($s, $_);
}
}
push @$done, @$subjects;
}
return $done;
}
# build_index($dir)
#
# build index for $dir
#
sub build_index($)
{
require OpenBSD::Makewhatis::Find;
require OpenBSD::Makewhatis::Whatis;
my $dir = shift;
my $list = OpenBSD::Makewhatis::Find::find_manpages($dir);
my $subjects = scan_manpages($list);
OpenBSD::Makewhatis::Whatis::write($subjects, $dir);
}
# merge($dir, \@pages)
#
# merge set of pages into directory index
#
sub merge($$)
{
require OpenBSD::Makewhatis::Whatis;
my ($mandir, $args) = @_;
unless (-d $mandir) {
die "$0: $mandir: not a directory"
}
my $whatis = "$mandir/whatis.db";
my $subjects = scan_manpages($args);
if (open(my $old, '<', $whatis)) {
while (my $l = <$old>) {
chomp $l;
push(@$subjects, $l);
}
close($old);
}
OpenBSD::Makewhatis::Whatis::write($subjects, $mandir);
}
# remove(dir, \@pages)
#
# remove set of pages from directory index
#
sub remove($$)
{
require OpenBSD::Makewhatis::Whatis;
my ($mandir, $args) = @_;
unless (-d $mandir) {
die "$0: $mandir: not a directory"
}
my $whatis = "$mandir/whatis.db";
open(my $old, '<', $whatis) or
die "$0: can't open $whatis to merge with: $!";
my $subjects = scan_manpages($args);
my %remove = map {$_ => 1 } @$subjects;
$subjects = [];
while (my $l = <$old>) {
chomp $l;
push(@$subjects, $l) unless defined $remove{$l};
}
close($old);
OpenBSD::Makewhatis::Whatis::write($subjects, $mandir);
}
# $dirs = default_dirs()
#
# read list of default directories from man.conf
#
sub default_dirs()
{
my $args=[];
open(my $conf, '<', '/etc/man.conf') or
die "$0: Can't open /etc/man.conf";
while (my $l = <$conf>) {
chomp $l;
push(@$args, $1) if $l =~ m/^_whatdb\s+(.*)\/whatis\.db\s*$/;
}
close $conf;
return $args;
}
# makewhatis(\@args, \%opts)
#
# glue for front-end, see makewhatis(8)
#
sub makewhatis($$)
{
my ($args, $opts) = @_;
if (defined $opts->{'p'}) {
$picky = 1;
}
if (defined $opts->{'t'}) {
$testmode = 1;
my $subjects = scan_manpages($args);
print join("\n", @$subjects), "\n";
return;
}
if (defined $opts->{'d'}) {
merge($opts->{'d'}, $args);
return;
}
if (defined $opts->{'u'}) {
remove($opts->{'u'}, $args);
return;
}
if (@$args == 0) {
$args = default_dirs();
}
for my $mandir (@$args) {
if (-d $mandir) {
build_index($mandir);
} elsif (-e $mandir || $picky) {
print STDERR "$0: $mandir is not a directory\n";
}
}
}
1;
|
