/usr/sbin/dwww-index++ is in dwww 1.13.1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# vim:ft=perl:cindent:ts=4:sts=4:sw=4:et:fdm=marker:cms=\ #\ %s
#
# dwww-index++ - create index of registered documentation using index++ command
# Copyright (C) 2003 Robert Luberda <robert@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#
# $Id: dwww-index++ 511 2009-01-10 23:59:42Z robert $
#
use strict;
use Debian::Dwww::Utils;
use Debian::Dwww::Version;
use Debian::Dwww::DocBase;
use Debian::Dwww::Initialize;
use File::Glob ':glob';
use File::Copy;
use Getopt::Std;
$| = 1;
# Global variables
my @index_formats=(
'html',
'text',
'rtf',
'latex'
);
# files we never index, checked before stat() call
my $stopfiles = qr(\.(css|dsl|ico|gif|jpe?g|lfig|mp[34]|sasl|png|svg)$)o;
# files we actually index, after stat() call
my $indexfiles = qr(\.([sx]?html?|te?xt?|rtf|[ja]sp|[1-9n][^\.]*)(\.gz|\.bz2|\.Z)?$)o;
my $dwww_url = "/cgi-bin/dwww";
my $dwww_swish_conf = "/usr/share/dwww/swish++.conf";
my $dwww_swish_index = "/var/cache/dwww/dwww.swish++.index";
my $dwww_indexed_files_db = "/var/cache/dwww/index.files.db";
my $dwww_lastrun_info = "/var/cache/dwww/index.runinfo";
my $path_to_index = '/usr/bin/index++';
my $MAX_RECURS_SUBDIRS_LVL = 10;
our($opt_v, $opt_f, $opt_i, $opt_l); # set by getopt
my $RUN_MODE_SKIP = 0;
my $RUN_MODE_FULL = 1;
my $RUN_MODE_INCREMENTAL = 2;
if (! -x $path_to_index) {
&Inform( "Cannot find index++ command.\n" .
"Do you have swish++ package installed?", 1);
exit(1);
}
my $dwwwconf = &DwwwInitialize("/etc/dwww/dwww.conf");
&DwwwSetupDirs($dwwwconf);
$Getopt::Std::STANDARD_HELP_VERSION=1;
&getopts('vfli');
&CheckOptions();
$ErrorProc = \&ErrorHandle;
my %old_files_hash = ( );
my %new_files_hash = ( );
&Main();
exit 0;
#########################################################################
#
# Main function
#
sub Main() { # {{{
my $do_index = $dwwwconf->{'DWWW_INDEX_DOCUMENTATION'};
if (!$opt_f and !$opt_i and !$opt_l
and defined $do_index and lc($do_index) eq "no") {
&Inform("Building index disabled in configuration");
exit(0);
}
my %last_run_info = ();
&ReadLastRunInfo(\%last_run_info);
my $run_mode = &FindRunMode(\%last_run_info);
if ($run_mode == $RUN_MODE_SKIP) {
&Inform("Skipping indexing"); # FIXME
exit(0);
}
&Inform("Incremental index will be build") if $run_mode == $RUN_MODE_INCREMENTAL;
&Inform("Full index will be build") if $run_mode == $RUN_MODE_FULL;
# set current time
$last_run_info{$run_mode} = time();
&Inform("Parsing doc-base files");
&ReadIndexedFileNames() if $run_mode == $RUN_MODE_INCREMENTAL;
&FilesFromDocBaseDir("/var/lib/doc-base/documents");
if ($opt_l) {
&WriteListOfFilesToIndex(\*STDOUT, 0);
exit 0;
}
&PerformIndexing($run_mode);
&SaveIndexedFileNames($run_mode == $RUN_MODE_INCREMENTAL)
&SaveLastRunInfo(\%last_run_info);
} # }}}
#########################################################################
#
# Local functions
#
# Finds out if we need to build incremental or full indexing
sub FindRunMode($) { # {{{
my $run_info = shift;
return $RUN_MODE_FULL if $opt_f or ! -f $dwww_swish_index
or ! -f $dwww_indexed_files_db;
return $RUN_MODE_INCREMENTAL if $opt_i;
my $secondsPerDay = 24 * 3600;
my $now = time();
my $endday = $now - $now % $secondsPerDay + $secondsPerDay - 1;
foreach my $run_mode ($RUN_MODE_FULL, $RUN_MODE_INCREMENTAL) {
my $itv = $dwwwconf->{ ($run_mode == $RUN_MODE_FULL)
? 'DWWW_INDEX_FULL_TIME_INTERVAL'
: 'DWWW_INDEX_INCREMENTAL_TIME_INTERVAL' };
$itv *= $secondsPerDay;
if ($itv < $secondsPerDay) {
return $run_mode if $run_info->{$run_mode} + $itv < $now;
} else {
return $run_mode if $run_info->{$run_mode} + $itv < $endday;
}
}
return $RUN_MODE_SKIP;
} # }}}
# Runs index++
sub PerformIndexing($) { # {{{
my $run_mode = shift;
my $tmpfile = $dwww_swish_index.".tmp";
my $resultfile = $tmpfile;
my @index_command = ($path_to_index,
'--follow-links', '--no-recurse',
'--config-file', $dwww_swish_conf,
'--index-file', $tmpfile);
if ($run_mode == $RUN_MODE_INCREMENTAL) {
copy($dwww_swish_index, $tmpfile) or
die("Cannot copy $dwww_swish_index to $tmpfile:$!\n");
}
if ($run_mode == $RUN_MODE_INCREMENTAL or
($run_mode = $RUN_MODE_FULL and &CopyMan2HTMLIndex($tmpfile) ) ) {
$resultfile = $tmpfile . '.new';
push(@index_command, '--incremental');
}
push (@index_command, @ARGV) if ($#ARGV > -1);
push (@index_command, '-');
Inform("Executing: " . join(' ', @index_command));
open (INDEX, '|-')
|| exec { $index_command[0] } @index_command;
&WriteListOfFilesToIndex(\*INDEX, 1);
close INDEX;
wait;
if ( -s $resultfile ) {
unlink($dwww_swish_index);
rename($resultfile, $dwww_swish_index);
}
if ( -e $tmpfile ) {
unlink($tmpfile)
}
} # }}}
# Write to filehandle list of files we need to index
sub WriteListOfFilesToIndex($$ ) { # {{{
my $FH = shift;
my $do_sleep = shift;
foreach my $f (sort keys %new_files_hash) {
syswrite $FH, "$new_files_hash{$f}\n";
# sleep 150 ms
select(undef, undef, undef, 0.15) if $do_sleep;
}
} # }}}
# Read information about last full & incremental index run
sub ReadLastRunInfo($) { # {{{
my $run_info_ref = shift;
my @ri = ();
if (-f $dwww_lastrun_info) {
open (RUNINFO, "<", $dwww_lastrun_info) or
die "Cannot open $dwww_lastrun_info for reading: $!\n";
binmode RUNINFO;
my $values;
sysread(RUNINFO, $values, 8192);
close RUNINFO;
@ri = grep { $_ = 0 + $_; 1 } split (/\0/, $values, 2);
push @ri, 0;
}
$run_info_ref->{$RUN_MODE_FULL} = $ri[0];
$run_info_ref->{$RUN_MODE_INCREMENTAL} = $ri[1];
undef @ri;
} # }}}
# Write information about last full & incremental index run
sub SaveLastRunInfo($) { # {{{
my $run_info_ref = shift;
open (RUNINFO, ">", $dwww_lastrun_info . ".tmp") or
die "Cannot open $dwww_lastrun_info.tmp for writing: $!\n";
binmode RUNINFO;
syswrite(RUNINFO,
$run_info_ref->{$RUN_MODE_FULL} . "\0" . $run_info_ref->{$RUN_MODE_INCREMENTAL});
close RUNINFO;
rename $dwww_lastrun_info.".tmp", $dwww_lastrun_info
or die ("Cannot rename $dwww_lastrun_info.tmp to $dwww_lastrun_info: $!\n");
} # }}}
# Read list of already indexed filesand add them to %old_files_hash
sub ReadIndexedFileNames() { # {{{
my $file = $dwww_indexed_files_db;
return unless -f $file;
open (IDXDB, "<", $file) or die "Cannot open $file for reading: $!\n";
binmode IDXDB;
my $values = "";
while (sysread(IDXDB, $values, 8192, length($values))) {
my @fnames = grep { s/\001/\/usr\/share\/doc\//o; 1 } split(/\0/, $values);
$values = (substr($values, length($values) -1, 1) eq "\0") ? "" : pop(@fnames);
&AddToFileHash({}, \%old_files_hash, \@fnames, 0);
}
close IDXDB;
die "Invalid db file $file\n" if $values;
} # }}}
# Write list of indexed files
sub SaveIndexedFileNames() { # {{{
my $append = shift;
my $file = $dwww_indexed_files_db;
my $tmpfile = $file.".tmp";
my $openmode = ">";
if ($append) {
copy($file, $tmpfile) or die "Cannot copy $file to $tmpfile: $!\n";
$openmode = ">>";
}
open (IDXDB, $openmode, $tmpfile) or die "Cannot open $tmpfile for writting: $!\n";
binmode IDXDB;
foreach my $hashref (\%old_files_hash, \%new_files_hash) {
my $values = join("\0", values %{$hashref}) . "\0";
$values =~ s/\/usr\/share\/doc\//\001/g;
my ($len, $offset) = (length($values), 0);
while ($offset < $len) {
syswrite(IDXDB, $values, 8192, $offset) or
die "Cannot write to $tmpfile: $!\n";
$offset += 8192;
}
}
close IDXBD;
rename ($tmpfile, $file) or die "Cannot rename $tmpfile to $file: $!\n";
} # }}}
sub ErrorHandle { # {{{
my $file = shift;
my $msg = shift;
print STDERR "$file: $msg\n" if $opt_v;
} # }}}
# Copy index file created by man2html
# Returns 1 on success
sub CopyMan2HTMLIndex($) { # {{{
my $destfile = shift;
my $m2h_merge = $dwwwconf->{'DWWW_MERGE_MAN2HTML_INDEX'};
my $m2h_idx_file = '/var/cache/man2html/man2html.swish++.index';
if (defined $m2h_merge and lc($m2h_merge) eq "yes" and -r $m2h_idx_file) {
return 1 if (copy($m2h_idx_file, $destfile));
}
return 0;
} # }}}
# adds files to %old_files_hash or %new_files_hash (passed as local references)
sub AddToFileHash($$$$) { # {{{
my ($old_hash, $new_hash,$reffiles,$max_recursion_subdirs) = @_;
my $key;
foreach my $file (@{$reffiles}) {
next if $file =~ $stopfiles;
my @stat = stat $file ;
if (-f _) {
next unless $file =~ $indexfiles;
my $key = sprintf("%d:%10.10d", $stat[0], $stat[1]);
next if $old_hash->{$key};
next if $new_hash->{$key};
$new_hash->{$key} = $file;
}
# recurse though subdir
next unless ($max_recursion_subdirs > 0) and -d _;
if (not opendir DOCSUBDIR, $file) {
&Inform("Cannot open directory $file: $!");
next;
}
$file =~ s/\/*$/\//; # add trailing slash
my @files = grep { $_ !~ /^\./ and $_ = $file.$_ } readdir (DOCSUBDIR);
closedir DOCSUBDIR;
&AddToFileHash($old_hash, $new_hash, \@files, $max_recursion_subdirs - 1);
}
} # }}}
sub FilesFromDocBaseDir($) { # {{{
my $dir = shift;
if (not opendir DOCBASEDIR, $dir) {
&Inform("Cannot open directory $dir: $!");
return;
}
while (my $f = readdir(DOCBASEDIR))
{
next if $f =~ /^\./;
next if -d $f;
if (defined (my $entry = &ParseDocBaseFile("$dir/$f"))) {
&FilesFromDocBaseEntry("$dir/$f", $entry);
undef %{$entry};
}
}
closedir DOCBASEDIR;
} # }}}
sub FilesFromDocBaseEntry() { # {{{
my $file = shift;
my $entry = shift;
my $doc_entry = { };
my $known = 0;
if (exists $entry->{'dwww-section'}) {
&DwwwSection2Section($entry);
}
foreach my $f (@index_formats) {
my @globbed = ();
my $ei = defined $entry->{'formats'}->{$f}->{'index'} ?
$entry->{'formats'}->{$f}->{'index'} : '';
my $ef = defined $entry->{'formats'}->{$f}->{'files'} ?
$entry->{'formats'}->{$f}->{'files'} : '';
if ($ei ne '' && -r $ei) {
push(@globbed, $ei);
}
if ($ef ne '') {
foreach my $f (split(/\s+/, $ef)) {
push(@globbed, &bsd_glob($f, GLOB_NOSORT)) unless ($f eq $ei);
}
}
&AddToFileHash(\%old_files_hash,\%new_files_hash, \@globbed, $MAX_RECURS_SUBDIRS_LVL);
}
} # }}}
# Print message to stderr
sub Inform($;$) { # {{{
my $message = shift;
my $force = shift;
print STDERR $message."\n" if $force or $opt_v;
} # }}}
# Check if valid options were passed to program
sub CheckOptions() { # {{{
if ($opt_i and $opt_f) {
&Inform("Options -i and -f cannot be used together", 1);
exit 1;
}
if ($opt_i and !(-f $dwww_swish_index and -f $dwww_indexed_files_db)) {
&Inform("Cannot build incremental index until full index is built", 1);
exit 1;
}
} # }}}
#########################################################################
#
# GetOpt callbacks
#
sub VERSION_MESSAGE() { # {{{
my $prog = $0;
$prog =~ s/^.*\///;
print STDOUT "$prog version $Debian::Dwww::Version::version\n";
} # }}}
sub HELP_MESSAGE() { # {{{
my $prog = $0;
$prog =~ s/^.*\///;
print STDOUT "Usage: $prog [-v] [-f] [-- swish_option [...]]\n";
print STDOUT " -v be more verbose\n";
print STDOUT " -f build the index (full) even if it's disabled in the configuration file\n";
print STDOUT " -i build the index (incremental) even if it's disabled in the configuration file\n";
print STDOUT " -l do not really index, only output the list of files to index\n";
print STDOUT " -- opt option passed to swish's index++ program\n";
} # }}}
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