1999-06-14 Zack Weinberg <zack@rabi.columbia.edu>

	* cpp.texi: Minor update.
	* cpp.1: Regenerate from cpp.texi, using...
	* contrib/texi2pod.pl: ...this (new file) plus some hand tweaks.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@27525 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 151 insertions, 0 deletions

diff --git a/contrib/texi2pod.pl b/contrib/texi2pod.pl
new file mode 100755
index 00000000000..bb26fb23375
--- /dev/null
+++ b/contrib/texi2pod.pl
@@ -0,0 +1,151 @@
+#! /usr/bin/perl -w
+
+# This does trivial (and I mean _trivial_) conversion of Texinfo
+# markup to Perl POD format.  It's intended to be used to extract
+# something suitable for a manpage from a Texinfo document.
+
+$in = $ARGV[0];
+$out = "x";
+die "usage: $0 infile outfile\n" unless defined $in && defined $out;
+
+close STDIN;
+open(IN,$in);
+
+$output = 0;
+$ignore = 0;
+%sects = ();
+$section = "";
+@icstack = ();
+@endwstack = ();
+$shift = "";
+
+while(<IN>)
+{
+    chomp;
+    /^\@end ignore/ and $ignore = 0, next;
+    next if $ignore;
+    /^\@c man begin ([A-Z]+)/ and $sect = $1, $output = 1, next;
+    /^\@c man end/ and do {
+	$_ = $section;
+	s/</&lt;/g;
+	s/>/&gt;/g;
+
+	s/\@(?:dfn|var|emph|cite)\{([^\}]*)\}/I<$1>/g;
+	s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g;
+	s/\@(?:samp|strong|key)\{([^\}]*)\}/B<$1>/g;
+	s/\@file\{([^\}]*)\}/F<$1>/g;
+	s/\@(?:url|email)\{([^\}]*)\}/E<lt>C<$1>E<rt>/g;
+	s/\@[a-z]?ref\{(?:[^\}]*)\}.?//g;
+	s/\(\@p[a-z]?ref\{(?:[^\}]*)\}\).?//g;
+	s/\@copyright\{\}//g;
+	s/\@noindent\s*//g;
+	s/\@refill//g;
+	s/\@\././g;
+
+	s/&lt;/E<lt>/g;
+	s/&gt;/E<gt>/g;
+	s/&LT;/</g;
+	s/&GT;/>/g;
+
+	$sects{$sect} = $_;
+	$section = "";
+	$output = 0;
+	next;
+    };
+    
+    /^\@(c|[a-z]+index)\b/ and next;
+
+    /^\@setfilename\s+([^.]+)/ and $fn = $1, next;
+    /^\@settitle\s+([^.]+)/ and $tl = $1, next;
+
+    next unless $output;
+
+    /^\@ignore/ and $ignore = 1, next;
+
+    /^\@itemize (\@[a-z]+)/ and do {
+	push @endwstack, $endw;
+	push @icstack, $ic;
+	$ic = $1;
+	$ic =~ s/\@bullet/*/;
+	$ic =~ s/\@minus/-/;
+	$_ = "\n=over 4\n";
+	$endw = "itemize";
+    };
+
+    /^\@enumerate\s+([A-Z0-9]+)/ and do {
+	push @endwstack, $endw;
+	push @icstack, $ic;
+	$ic = $1 . ".";
+	$_ = "\n=over 4\n";
+	$endw = "enumerate";
+    };
+
+    /^\@table\s+(\@[a-z]+)/ and do {
+	push @endwstack, $endw;
+	push @icstack, $ic;
+	$ic = $1;
+	$ic =~ s/\@(?:samp|strong|key)/B/;
+	$ic =~ s/\@(?:code|kbd)/C/;
+	$ic =~ s/\@(?:dfn|var|emph|cite)/I/;
+	$ic =~ s/\@(?:file)/F/;
+	$_ = "\n=over 4\n";
+	$endw = "table";
+    };
+
+    /^\@((?:small)?example)/ and do {
+	push @endwstack, $endw;
+	$endw = $1;
+	$shift = "\t";
+	next;
+    };
+
+    /^\@end\s+([a-z]+)/ and do {
+	if(defined $endw)
+	{
+	    die "\@$endw ended by \@end $1 at line $.\n"
+		unless $1 eq $endw;
+
+	    if($endw =~ /example$/)
+	    {
+		$shift = "";
+		$_ = "";
+	    }
+	    else
+	    {
+		$_ = "\n=back\n";
+		undef $endw;
+		$ic = pop @icstack;
+	    }
+	    $endw = pop @endwstack;
+	}
+    };
+
+    /^\@itemx?\s*(.+)?$/ and do {
+	if(defined $1)
+	{
+	    $_ = "=item $ic\&LT;$1\&GT;\n";
+	}
+	else
+	{
+	    $_ = "=item $ic\n";
+	    $ic =~ y/A-Ya-y1-8/B-Zb-z2-9/;
+	}
+    };
+	
+    $section .= $shift.$_."\n";
+}
+
+$sects{NAME} = "$fn \- $tl\n";
+
+for $sect (qw(NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT FILES
+	      BUGS NOTES SEEALSO AUTHOR COPYRIGHT))
+{
+    if(exists $sects{$sect})
+    {
+	$head = $sect;
+	$head =~ s/SEEALSO/SEE ALSO/;
+	print "=head1 $head\n\n";
+	print $sects{$sect};
+	print "\n";
+    }
+}