--- /dev/null
+#
+# tarman - make tar man page from src/tar.c
+# some text cribbed from debian tar man page
+#
+
+use strict;
+
+my $t = "".localtime(time);
+my $datestr = substr($t,4,3)." ".substr($t,8,2).", ".substr($t,20,4);
+
+@ARGV=qw(src/tar.c);
+my $mode;
+my @operations;
+my $lastoperation;
+my @options;
+my @formats;
+my @short;
+my $examples;
+my $saw_format;
+my @env_vars;
+while (<>) {
+ my $nflag = 0;
+ chomp;
+# print "$mode: $_\n";
+ if (/getenv.*"/) {
+ next if defined($mode);
+ my @c1 = split('"');
+ if ($#c1 > 0) {
+ push @env_vars, $c1[1];
+ }
+ }
+ if (/Main operation mode:/) {
+ $mode = 1;
+ next;
+ }
+ if (/Operation modifiers:/) {
+ $mode = 2;
+ next;
+ }
+ if (/Examples:/) {
+ $mode = 3;
+ next;
+ }
+ if (/define GRID/) {
+ $mode = 2;
+ }
+ if (/undef GRID/) {
+ undef $lastoperation;
+ undef $mode;
+ next;
+ }
+ if ($mode == 1 || $mode == 2) {
+ if (/{"/) { # }
+ my @j = split(',');
+ my @c1 = split('"', $j[0]);
+ if (/OPTION_ALIAS/) {
+ next unless defined($lastoperation);
+ push @{$$lastoperation{'alias'} }, $c1[1];
+ next;
+ }
+ my %newhash = ();
+ $lastoperation = \%newhash;
+ my $name = $c1[1];
+ if ($name =~ /^ /) {
+ $name =~ s/^ */format=/;
+ push @formats, $lastoperation;
+ } elsif ($mode == 1) {
+ push @operations, $lastoperation;
+ } else {
+ push @options, $lastoperation;
+ }
+ $newhash{'name'} = $name;
+ if ($mode == 2 && $name eq 'format') {
+ $saw_format = $lastoperation;
+ }
+ my @c2 = split("'", $j[1]);
+ if ($#c2 > 0) {
+ $newhash{'short'} = $c2[1];
+ push @short, $c2[1] if ($mode == 1);
+ }
+ if ($j[2] =~ /N_/) {
+ $nflag = 1;
+ }
+ }
+ if (/N_/) {
+ next unless defined($lastoperation);
+ my $nrest = $_;
+ $nrest =~ s/.*N_//;
+ my @c3 = split('"', $nrest);
+ if ($#c3 > 0) {
+ if ($nflag) {
+ $$lastoperation{'operand'} .= $c3[1];
+ } else {
+ $$lastoperation{'description'} .= $c3[1];
+ }
+ }
+ }
+ }
+ if ($mode == 3 ) {
+ my $j = $_;
+ $j =~ s/\\n.*//;
+ my ($c1, $c2) = split('#', $j, 2);
+ $c1 =~ s/ *$//;
+ $c1 =~ s/^ *//;
+$c1 =~ s/-/\\-/g;
+ $c2 =~ s/^ *//;
+$examples .= <<".";
+$c2
+.Bd -literal -offset indent -compact
+$c1
+.Ed
+.
+ # (
+ if (/"\)/) {
+ undef $mode;
+ }
+ }
+}
+
+# for my $q ( @operations) {
+# print "\nshort=".$$q{'short'}."\n";
+# print "name=".$$q{'name'}."\n";
+# print "desc=".$$q{'description'}."\n";
+# if (defined($$q{'alias'})) {
+# print "alias=".join(',',@{ $$q{'alias'}})."\n";
+# }
+# }
+
+sub long2nroff {
+ my $f = shift;
+ if ($f !~ /^-/) {
+ $f = "Fl -$f";
+ }
+ $f =~ s/-/\\-/g;
+ return $f;
+}
+
+sub format_options
+{
+ my $h = shift;
+ my $r;
+ for my $q ( @$h ) {
+ $r .= ".It";
+ my @functions;
+ push @functions, " Fl ".$$q{'short'} if defined($$q{'short'});
+ push @functions, " ".long2nroff($$q{'name'});
+ push @functions, join(' ', '', map {long2nroff $_} @{ $$q{'alias'} })
+ if defined($$q{'alias'});
+ $r .= join(' ,', @functions);
+ if (defined($$q{'operand'})) {
+ if ($#functions > 0) {
+ $r .= " ";
+ } else {
+ $r .= " Ns \\= Ns ";
+ }
+ $r .= "Ar ".$$q{'operand'};
+ }
+ $r .= "\n".$$q{'description'}."\n";
+ $r .= $$q{'extra'};
+ }
+ return $r;
+}
+
+sub optionkeyword
+{
+ my $h = shift;
+ my $k = $$h{'short'};
+ $k = $$h{'name'} if !defined($k);
+ my $l = $k;
+ if ($l =~ s/^no-//) {
+ $l .= "-no";
+ }
+ return ($l,$k);
+}
+
+sub optioncmp
+{
+ my ($x1, $x2) = optionkeyword($a);
+ my ($y1, $y2) = optionkeyword($b);
+ my $r = lc($x1) cmp lc($y1);
+ return $r if $r;
+ $r = $y1 cmp $x1;
+ return $r if $r;
+ return $x2 cmp $y2;
+}
+
+@operations = sort optioncmp @operations;
+@operations = sort optioncmp @operations;
+@options = sort optioncmp @options;
+@formats = sort optioncmp @formats;
+
+if ($#formats >= 0 && !$saw_format) {
+ print STDERR "FIXME: saw --format=X but no root --format!\n";
+ exit(1);
+}
+
+my $function_letters;
+my $short_letters = join('', sort @short);
+my $option_letters;
+my $format_letters;
+my $command_string = <<".";
+.Nm tar
+.
+$command_string .= ".Oo Fl Oc";
+my $env_variables;
+my %env_description = (
+'SIMPLE_BACKUP_SUFFIX' => <<".",
+Backup prefix to use when extracting, if
+.Fl \\-suffix
+is not specified.
+The backup suffix defaults to `~' if neither is specified.
+.
+'TAPE' => <<".",
+Device or file to use for the archive if
+.Fl \\-file
+is not specified.
+If this environment variable is unset, use stdin or stdout instead.
+.
+'TAR_OPTIONS' => <<".",
+Options to prepend to those specified on the command line, separated by
+whitespace. Embedded backslashes may be used to escape whitespace or
+backslashes within an option.
+.
+);
+my $sep = "";
+for my $q ( @operations) {
+ $command_string .= " Cm";
+ $command_string .= $sep;
+ $command_string .= " ".$$q{'short'} if defined($$q{'short'});
+ $command_string .= " ".long2nroff($$q{'name'});
+ if (defined($$q{'alias'})) {
+ my $t = join(' ', '', map{long2nroff $_} @{ $$q{'alias'} });
+ $t =~ s/ Fl / /g;
+ $command_string .= $t;
+ }
+ $sep = " \\||\\|";
+}
+$function_letters = ".Bl -tag -width flag\n";
+$function_letters .= format_options(\@operations);
+$function_letters .= ".El";
+if ($#formats >= 0) {
+ $format_letters = ".Bl -tag -width flag\n";
+ $format_letters .= format_options(\@formats);
+ $format_letters .= ".El\n";
+ $$saw_format{'extra'} = $format_letters;
+}
+### Ar Cm Ic Li Nm Op Pa Va
+$option_letters = ".Bl -tag -width flag\n";
+$option_letters .= format_options(\@options);
+$option_letters .= ".El";
+$env_variables .= ".Bl -tag -width Ds\n";
+for my $q ( @env_vars) {
+ $env_variables .= ".It Ev $q\n";
+ $env_variables .= $env_description{$q};
+}
+$env_variables .= ".El";
+
+$examples =~ s/\n$//;
+$function_letters =~ s/\n$//;
+$option_letters =~ s/\n$//;
+$env_variables =~ s/\n$//;
+print <<".";
+.\\" generated by script on $t
+.Dd $datestr
+.Dt TAR 1
+.Sh NAME
+.Nm tar
+.Nd The GNU version of the tar archiving utility
+.Sh SYNOPSIS
+$command_string
+.Op Ar options
+.Op Ar pathname ...
+.Sh DESCRIPTION
+.Nm Tar
+stores and extracts files from a tape or disk archive.
+.Pp
+The first argument to
+.B tar
+should be a function; either one of the letters
+.Cm $short_letters ,
+or one of the long function names.
+A function letter need not be prefixed with ``\\-'', and may be combined
+with other single-letter options.
+A long function name must be prefixed with
+.Cm \\\\-\\\\- .
+Some options take a parameter; with the single-letter form
+these must be given as separate arguments.
+With the long form, they may be given by appending
+.Cm = Ns Ar value
+to the option.
+.Sh FUNCTION LETTERS
+Main operation mode:
+$function_letters
+.Sh OTHER OPTIONS
+Operation modifiers:
+$option_letters
+.Sh ENVIRONMENT
+The behavior of tar is controlled by the following environment variables,
+among others:
+$env_variables
+.Sh EXAMPLES
+$examples
+.Sh SEE ALSO
+.\\" libarchive
+.Xr tar 5 ,
+.\\" man-pages
+.Xr symlink 7 ,
+.Xr rmt 8
+.Sh HISTORY
+The
+.Nm tar
+command appeared in
+.At v7 .
+.Sh BUGS
+The GNU folks, in general, abhor man pages, and create info documents instead.
+Unfortunately, the info document describing tar is licensed under the GFDL with
+invariant cover texts, which makes it impossible to include any text
+from that document in this man page.
+Most of the text in this document was automatically extracted from the usage
+text in the source.
+It may not completely describe all features of the program.
+.
+__END__
projects / tar / blobdiff