387 lines
9.6 KiB
Perl
387 lines
9.6 KiB
Perl
#!/usr/bin/perl
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#
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# Copyright (c) March 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# /usr/bin/catman - preformat man pages
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#
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# $Id: catman.perl,v 1.11 1998/05/01 13:27:27 des Exp $
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sub usage {
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warn <<EOF;
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usage: catman [-h|-help] [-f|-force] [-p|-print] [-r|remove]
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[-v|-verbose] [directories ...]
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EOF
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exit 1;
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}
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sub variables {
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$force = 0; # force overwriting existing catpages
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$verbose = 0; # more warnings
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$print = 0; # show only, do nothing
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$remove = 0; # unlink forgotten man/catpages
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# if no argument for directories given
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@defaultmanpath = ( '/usr/share/man' );
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$exit = 0; # exit code
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$ext = ".gz"; # extension
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umask(022);
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# Signals
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$SIG{'INT'} = 'Exit';
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$SIG{'HUP'} = 'Exit';
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$SIG{'TRAP'} = 'Exit';
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$SIG{'QUIT'} = 'Exit';
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$SIG{'TERM'} = 'Exit';
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$tmp = ''; # tmp file
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$ENV{'PATH'} = '/bin:/usr/bin';
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}
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sub Exit {
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unlink($tmp) if $tmp ne ""; # unlink if a filename
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die "$0: die on signal SIG@_\n";
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}
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sub parse {
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local(@argv) = @_;
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while($_ = $argv[0], /^-/) {
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shift @argv;
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last if /^--$/;
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if (/^--?(f|force)$/) { $force = 1 }
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elsif (/^--?(p|print)$/) { $print = 1 }
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elsif (/^--?(r|remove)$/) { $remove = 1 }
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elsif (/^--?(v|verbose)$/) { $verbose = 1 }
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else { &usage }
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}
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return &absolute_path(@argv) if $#argv >= 0;
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return @defaultmanpath if $#defaultmanpath >= 0;
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warn "Missing directories\n"; &usage;
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}
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# make relative path to absolute path
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sub absolute_path {
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local(@dirlist) = @_;
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local($pwd, $dir, @a);
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$pwd = $ENV{'PWD'};
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foreach $dir (@dirlist) {
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if ($dir !~ "^/") {
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chop($pwd = `pwd`) if (!$pwd || $pwd !~ /^\//);
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push(@a, "$pwd/$dir");
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} else {
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push(@a, $dir);
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}
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}
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return @a;
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}
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# strip unused '/'
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# e.g.: //usr///home// -> /usr/home
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sub stripdir {
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local($dir) = @_;
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$dir =~ s|/+|/|g; # delete double '/'
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$dir =~ s|/$||; # delete '/' at end
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$dir =~ s|/(\.\/)+|/|g; # delete ././././
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$dir =~ s|/+|/|g; # delete double '/'
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$dir =~ s|/$||; # delete '/' at end
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$dir =~ s|/\.$||; # delete /. at end
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return $dir if $dir ne "";
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return '/';
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}
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# read man directory
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sub parse_dir {
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local($dir) = @_;
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local($subdir, $catdir);
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local($dev,$ino) = (stat($dir))[01];
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# already visit
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if ($dir_visit{$dev,$ino}) {
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warn "$dir already parsed: $dir_visit{$dev,$ino}\n";
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return 1;
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}
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$dir_visit{$dev,$ino} = $dir;
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# Manpath, /usr/local/man
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if ($dir =~ /man$/) {
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warn "open manpath directory ``$dir''\n" if $verbose;
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if (!opendir(DIR, $dir)) {
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warn "opendir ``$dir'':$!\n"; $exit = 1; return 0;
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}
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warn "chdir to: $dir\n" if $verbose;
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chdir($dir) || do { warn "$dir: $!\n"; $exit = 1; return 0 };
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foreach $subdir (sort(readdir(DIR))) {
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if ($subdir =~ /^man\w+$/) {
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$subdir = "$dir/$subdir";
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&catdir_create($subdir) && &parse_subdir($subdir);
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}
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}
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closedir DIR
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# subdir, /usr/local/man/man1
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} elsif ($dir =~ /man\w+$/) {
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local($parentdir) = $dir;
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$parentdir =~ s|/[^/]+$||;
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warn "chdir to: $parentdir\n" if $verbose;
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chdir($parentdir) || do {
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warn "$parentdir: $!\n"; $exit = 1; return 0 };
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&catdir_create($dir) && &parse_subdir($dir);
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} else {
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warn "Assume ``$dir'' is not a man directory.\n";
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$exit = 1;
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}
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}
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# create cat subdirectory if neccessary
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# e.g.: man9 exist, but cat9 not
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sub catdir_create {
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local($subdir) = @_;
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local($catdir) = $subdir;
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$catdir = &man2cat($subdir);
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if (-d $catdir) {
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return 1 if -w _;
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if (!chmod(0755, $catdir)) {
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warn "Cannot write $catdir, chmod: $!\n";
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$exit = 1;
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return 0;
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}
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return 1;
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}
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warn "mkdir ``$catdir''\n" if $verbose || $print;
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unless ($print) {
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unlink($catdir); # be paranoid
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if (!mkdir($catdir, 0755)) {
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warn "Cannot make $catdir: $!\n";
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$exit = 1;
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return 0;
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}
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return 1;
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}
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}
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# I: /usr/share/man/man9
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# O: /usr/share/man/cat9
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sub man2cat {
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local($man) = @_;
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$man =~ s/man(\w+)$/cat$1/;
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return $man;
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}
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sub parse_subdir {
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local($subdir) = @_;
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local($file, $f, $catdir, $catdir_short, $mandir, $mandir_short);
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local($mtime_man, $mtime_cat);
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local(%read);
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$mandir = $subdir;
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$catdir = &man2cat($mandir);
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($mandir_short = $mandir) =~ s|.*/(.*)|$1|;
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($catdir_short = $catdir) =~ s|.*/(.*)|$1|;
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warn "open man directory: ``$mandir''\n" if $verbose;
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if (!opendir(D, $mandir)) {
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warn "opendir ``$mandir'': $!\n"; $exit = 1; return 0;
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}
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foreach $file (readdir(D)) {
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# skip current and parent directory
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next if $file eq "." || $file eq "..";
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# fo_09-o.bar0
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if ($file !~ /^[\w\-\+\[\.:]+\.\w+$/) {
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&garbage("$mandir/$file", "Assume garbage")
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unless -d "$mandir/$file";
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next;
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}
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if ($file !~ /\.gz$/) {
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if (-e "$mandir/$file.gz") {
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&garbage("$mandir/$file",
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"Manpage unused, see compressed version");
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next;
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}
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warn "$mandir/$file is uncompressed\n" if $verbose;
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$cfile = "$file.gz";
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} else {
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$cfile = "$file";
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}
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if (!(($mtime_man = ((stat("$mandir_short/$file"))[9])) && -r _ && -f _)) {
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if (! -d _) {
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warn "Cannot read file: ``$mandir/$file''\n";
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$exit = 1;
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if ($remove && -l "$mandir/$file") {
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&garbage("$mandir/$file", "Assume wrong symlink");
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}
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next;
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}
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warn "Ignore subsubdirectory: ``$mandir/$file''\n"
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if $verbose;
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next;
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}
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$read{$file} = 1;
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# Assume catpages always compressed
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if (($mtime_cat = ((stat("$catdir_short/$cfile"))[9]))
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&& -r _ && -f _) {
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if ($mtime_man > $mtime_cat || $force) {
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&nroff("$mandir/$file", "$catdir/$cfile");
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} else {
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warn "up to date: $mandir/$file\n" if $verbose;
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#print STDERR "." if $verbose;
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}
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} else {
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&nroff("$mandir/$file", "$catdir/$cfile");
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}
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}
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closedir D;
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if (!opendir(D, $catdir)) {
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warn "opendir ``$catdir'': $!\n"; return 0;
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}
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warn "open cat directory: ``$catdir''\n" if $verbose;
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foreach $file (readdir(D)) {
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next if $file =~ /^(\.|\.\.)$/; # skip current and parent directory
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if ($file !~ /^[\w\-\+\[\.:]+\.\w+$/) {
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&garbage("$catdir/$file", "Assume garbage")
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unless -d "$catdir/$file";
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next;
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}
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if ($file !~ /\.gz$/ && $read{"$file.gz"}) {
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&garbage("$catdir/$file",
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"Catpage unused, see compressed version");
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} elsif (!$read{$file}) {
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# maybe a bug in man(1)
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# if both manpage and catpage are uncompressed, man reformats
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# the manpage and puts a compressed catpage to the
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# already existing uncompressed catpage
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($f = $file) =~ s/\.gz$//;
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# man page is uncompressed, catpage is compressed
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next if $read{$f};
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&garbage("$catdir/$file", "Catpage without manpage");
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}
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}
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closedir D;
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}
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sub garbage {
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local($file, @text) = @_;
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warn "@text: ``$file''\n";
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if ($remove) {
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warn "unlink $file\n";
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unless ($print) {
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unlink($file) || warn "unlink $file: $!\n" ;
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}
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}
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}
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sub nroff {
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local($man,$cat) = @_;
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local($nroff) = "nroff -Tascii -man | col";
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local($dev, $ino) = (stat($man))[01];
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# It's a link
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if ($link{"$dev.$ino"}) {
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warn "Link: $link{\"$dev.$ino\"} -> $cat\n" if $verbose || $print;
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return if $print; # done
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unlink($cat); # remove possible old link
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unless (link($link{"$dev.$ino"}, $cat)) {
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warn "Link $cat: $!\n";
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$exit = 1;
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}
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return;
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} else {
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$cat = "$cat$ext" if $cat !~ /$ext$/;
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warn "Format: $man -> $cat\n" if $verbose || $print;
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unless($print) {
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# man page is compressed
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if ($man =~ /$ext$/) {
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$nroff = "zcat $man | tbl | $nroff";
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} else {
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$nroff = "tbl $man | $nroff";
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}
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# start formatting
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$tmp = "$cat.$tmp"; # for cleanup after signals
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system("$nroff | gzip > $cat.tmp");
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if ($?) {
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# assume a fatal signal to nroff
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&Exit("INT to system() function") if ($? == 2);
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} else {
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rename("$cat.tmp", $cat);
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}
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}
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}
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# dev/ino from manpage, path from catpage
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$link{"$dev.$ino"} = $cat;
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}
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#############
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# main
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warn "Don't start this program as root, use:\n" .
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"echo $0 @ARGV | nice -5 su -m man\n" unless $>;
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&variables;
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foreach $dir (&parse(split(/[ :]/, join($", @ARGV)))) { #"
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if (-e $dir && -d _ && -r _ && -x _) {
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warn "``$dir'' is not writable for you,\n" .
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"can only write to existing cat subdirs (if any)\n"
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if ! -w _ && $verbose;
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&parse_dir(&stripdir($dir));
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} else {
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warn "``$dir'' is not a directory or not read-/searchable for you\n";
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$exit = 1;
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}
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}
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exit($exit);
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