diff options
Diffstat (limited to 'docs/autodocifier.pl')
| -rwxr-xr-x | docs/autodocifier.pl | 255 |
1 files changed, 175 insertions, 80 deletions
diff --git a/docs/autodocifier.pl b/docs/autodocifier.pl index 2ce1edd..e5b9767 100755 --- a/docs/autodocifier.pl +++ b/docs/autodocifier.pl @@ -1,88 +1,183 @@ #!/usr/bin/perl -w -# -# autodocufier.pl - extracts usage messages from busybox usage.c and -# pretty-prints them to stdout. use strict; +use Getopt::Long; + +# collect lines continued with a '\' into an array +sub continuation { + my $fh = shift; + my @line; -my $line; -my $applet; -my $count; -my $full_usage; - -open(USAGE, 'usage.h') or die "usage.h: $!"; - -while (defined($line = <USAGE>)) { - $count=0; - if ($line =~ /^#define (\w+)_trivial_usage/) { - # grab the applet name - $applet = $1; - print "\n$applet:\n"; - - while (defined($line = <USAGE>)) { - if ( $count==0 ) { - $count++; - print "\t$applet "; - } else { print "\t"; } - $full_usage = $applet . "_full_usage"; - last if ( $line =~ /$full_usage/ ); - # Skip preprocessor stuff - next if $line =~ /^\s*#/; - # Strip the continuation char - $line =~ s/\\$//; - # strip quotes off - $line =~ s/^\s*"//; - $line =~ s/"\s*$//; - # substitute escape sequences - # (there's probably a better way to do this...) - $line =~ s/\\t/ /g; - $line =~ s/\\n//g; - # fix up preprocessor macros - $line =~ s/USAGE_\w+\([\s]*?(".*?").*?\)/$1/sg; - # Strip any empty quotes out - $line =~ s/"[\s]*"//sg; - # strip line end quotes, again - $line =~ s/^\s*"//; - $line =~ s/"\s*$//; - - # Finally, print it - print "$line\n"; + while (<$fh>) { + my $s = $_; + $s =~ s/\\\s*$//; + $s =~ s/#.*$//; + push @line, $s; + last unless (/\\\s*$/); + } + return @line; +} + +# regex && eval away unwanted strings from documentation +sub beautify { + my $text = shift; + $text =~ s/USAGE_\w+\([\s]*?(".*?").*?\)/$1/sg; + $text =~ s/"[\s]*"//sg; + my @line = split("\n", $text); + $text = join('', + map { eval } + map { qq[ sprintf(qq#$_#) ] } + map { + s/^\s*//; + s/"//g; + s/% /%% /g; + $_ } - printf("\n"); - while (defined($line = <USAGE>)) { - if ( $count==0 ) { - $count++; - print "\t$applet "; - } else { print "\t"; } - # we're done if we hit a line lacking a '\' at the end - #last if ! $line !~ /\\$/; - if ( $line !~ /\\$/ ) { - #print "Got one at $line\n"; - last; - } - # Skip preprocessor stuff - next if $line =~ /^\s*#/; - # Strip the continuation char - $line =~ s/\\$//; - # strip quotes off - $line =~ s/^\s*"//; - $line =~ s/"\s*$//; - # substitute escape sequences - # (there's probably a better way to do this...) - $line =~ s/\\t/ /g; - $line =~ s/\\n//g; - # Automagically #define all preprocessor lines - #$line =~ s/USAGE_\w+\([\s]*?(".*?")\s,\s".*"\s\)/$1/sg; - $line =~ s/USAGE_\w+\(\s*?(".*").*\)/$1/sg; - # Strip any empty quotes out - $line =~ s/"[\s]*"//sg; - # strip line end quotes, again - $line =~ s/^\s*"//; - $line =~ s/"\s*$//; - - # Finally, print it - print "$line\n"; + @line + ); + return $text; +} + +# generate POD for an applet +sub pod_for_usage { + my $name = shift; + my $usage = shift; + + my $trivial = $usage->{trivial}; + $trivial !~ /^\s/ && $trivial =~s/(?<!\w)(-\w+)/B<$1>/sxg; + + my @full = + map { $_ !~ /^\s/ && s/(?<!\w)(-\w+)/B<$1>/g; $_ } + split("\n", $usage->{full}); + + return + "-------------------------------\n". + "\n". + "=item $name". + "\n\n". + "$name $trivial". + "\n\n". + join("\n", @full). + "\n\n" + ; +} + +# generate SGML for an applet +sub sgml_for_usage { + my $name = shift; + my $usage = shift; + return + "FIXME"; +} + +# the keys are applet names, and the values will contain +# hashrefs of the form: +# { +# trivial => "...", +# full => "...", +# } +my %docs; + +# get command-line options +my %opt; + +GetOptions( + \%opt, + "help|h", + "sgml|s", + "pod|p", + "verbose|v", +); + +if (defined $opt{help}) { + print + "$0 [OPTION]... [FILE]...\n", + "\t--help\n", + "\t--sgml\n", + "\t--pod\n", + "\t--verbose\n", + ; + exit 1; +} + +# +# collect documenation into %docs +foreach (@ARGV) { + open(USAGE, $_) || die("$0: $!"); + my $fh = *USAGE; + my ($applet, $type, @line); + while (<$fh>) { + + if (/^#define (\w+)_(\w+)_usage/) { + $applet = $1; + $type = $2; + @line = continuation($fh); + my $doc = $docs{$applet} ||= { }; + + my $text = join("\n", @line); + $doc->{$type} = beautify($text); } - printf("\n\n"); + } } + +#use Data::Dumper; +#print Data::Dumper->Dump([\%docs], [qw(docs)]); + +foreach my $name (sort keys %docs) { + print pod_for_usage($name, $docs{$name}); +} + +exit 0; + +__END__ + +=head1 NAME + +autodocifier.pl - generate docs for busybox based on usage.h + +=head1 SYNOPSIS + +autodocifier.pl usage.h > something + +=head1 DESCRIPTION + +The purpose of this script is to automagically generate documentation +for busybox using its usage.h as the original source for content. +Currently, the same content has to be duplicated in 3 places in +slightly different formats -- F<usage.h>, F<docs/busybox.pod>, and +F<docs/busybox.sgml>. Duplicating the same content in these 3 places +is tedious, so Perl has come to the rescue. + +This script was based on an original work by +Erik Andersen (andersen@lineo.com). + +=head1 OPTIONS + +these control my behaviour + +=over 8 + +=item --help + +This displays the help message. + +=back + +=head1 FILES + +files that I manipulate + +=head1 COPYRIGHT + +Copyright (c) 2001 John BEPPU. All rights reserved. This program is +free software; you can redistribute it and/or modify it under the same +terms as Perl itself. + +=head1 AUTHOR + +John BEPPU <beppu@lineo.com> + +=cut + +# $Id: autodocifier.pl,v 1.2 2001/02/23 02:33:28 beppu Exp $ |