1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
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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# $FreeBSD$
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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(755, $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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