scripts/texi2pod: Delete unused script

We no longer need the texi2pod script, so we can delete it, and
the special-casing it had in the checkpatch script.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200925162316.21205-19-peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

2 files changed, 1 insertions, 537 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 50910899f2..1ba8a3810b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1659,7 +1659,7 @@ sub process {
 # tabs are only allowed in assembly source code, and in
 # some scripts we imported from other projects.
 		next if ($realfile =~ /\.(s|S)$/);
-		next if ($realfile =~ /(checkpatch|get_maintainer|texi2pod)\.pl$/);
+		next if ($realfile =~ /(checkpatch|get_maintainer)\.pl$/);
 
 		if ($rawline =~ /^\+.*\t/) {
 			my $herevet = "$here\n" . cat_vet($rawline) . "\n";
diff --git a/scripts/texi2pod.pl b/scripts/texi2pod.pl
deleted file mode 100755
index 8bfc6f6f4c..0000000000
--- a/scripts/texi2pod.pl
+++ /dev/null
@@ -1,536 +0,0 @@
-#! /usr/bin/env perl
-
-#   Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
-
-# This file is part of GCC.
-
-# GCC is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# GCC is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with GCC; see the file COPYING.  If not,
-# see <http://www.gnu.org/licenses/>.
-
-# This does trivial (and I mean _trivial_) conversion of Texinfo
-# markup to Perl POD format.  It's intended to be used to extract
-# something suitable for a manpage from a Texinfo document.
-
-use warnings;
-
-$output = 0;
-$skipping = 0;
-%sects = ();
-$section = "";
-@icstack = ();
-@endwstack = ();
-@skstack = ();
-@instack = ();
-$shift = "";
-%defs = ();
-$fnno = 1;
-$inf = "";
-$ibase = "";
-@ipath = ();
-$encoding = undef;
-@args = ();
-
-while ($_ = shift) {
-    if (/^-D(.*)$/) {
-	if ($1 ne "") {
-	    $flag = $1;
-	} else {
-	    $flag = shift;
-	}
-	$value = "";
-	($flag, $value) = ($flag =~ /^([^=]+)(?:=(.+))?/);
-	die "no flag specified for -D\n"
-	    unless $flag ne "";
-	die "flags may only contain letters, digits, hyphens, dashes and underscores\n"
-	    unless $flag =~ /^[a-zA-Z0-9_-]+$/;
-	$defs{$flag} = $value;
-    } elsif (/^-I(.*)$/) {
-	if ($1 ne "") {
-	    $flag = $1;
-	} else {
-	    $flag = shift;
-	}
-        push (@ipath, $flag);
-    } elsif (/^-/) {
-	usage();
-    } else {
-	$in = $_, next unless defined $in;
-	$out = $_, next unless defined $out;
-	usage();
-    }
-}
-
-if (defined $in) {
-    $inf = gensym();
-    open($inf, "<$in") or die "opening \"$in\": $!\n";
-    $ibase = $1 if $in =~ m|^(.+)/[^/]+$|;
-} else {
-    $inf = \*STDIN;
-}
-
-if (defined $out) {
-    open(STDOUT, ">$out") or die "opening \"$out\": $!\n";
-}
-
-while(defined $inf) {
-while(<$inf>) {
-    # Certain commands are discarded without further processing.
-    /^\@(?:
-	 [a-z]+index		# @*index: useful only in complete manual
-	 |need			# @need: useful only in printed manual
-	 |(?:end\s+)?group	# @group .. @end group: ditto
-	 |page			# @page: ditto
-	 |node			# @node: useful only in .info file
-	 |(?:end\s+)?ifnottex   # @ifnottex .. @end ifnottex: use contents
-	)\b/x and next;
-
-    chomp;
-
-    # Look for filename and title markers.
-    /^\@setfilename\s+([^.]+)/ and $fn = $1, next;
-    /^\@settitle\s+([^.]+)/ and $tl = postprocess($1), next;
-
-    # Look for document encoding
-    /^\@documentencoding\s+([^.]+)/ and do {
-        $encoding = $1 unless defined $encoding;
-        next;
-    };
-
-    # Identify a man title but keep only the one we are interested in.
-    /^\@c\s+man\s+title\s+([A-Za-z0-9-]+)\s+(.+)/ and do {
-	if (exists $defs{$1}) {
-	    $fn = $1;
-	    $tl = postprocess($2);
-	}
-	next;
-    };
-
-    # Look for blocks surrounded by @c man begin SECTION ... @c man end.
-    # This really oughta be @ifman ... @end ifman and the like, but such
-    # would require rev'ing all other Texinfo translators.
-    /^\@c\s+man\s+begin\s+([A-Z]+)\s+([A-Za-z0-9-]+)/ and do {
-	$output = 1 if exists $defs{$2};
-        $sect = $1;
-	next;
-    };
-    /^\@c\s+man\s+begin\s+([A-Z]+)/ and $sect = $1, $output = 1, next;
-    /^\@c\s+man\s+end/ and do {
-	$sects{$sect} = "" unless exists $sects{$sect};
-	$sects{$sect} .= postprocess($section);
-	$section = "";
-	$output = 0;
-	next;
-    };
-
-    # handle variables
-    /^\@set\s+([a-zA-Z0-9_-]+)\s*(.*)$/ and do {
-	$defs{$1} = $2;
-	next;
-    };
-    /^\@clear\s+([a-zA-Z0-9_-]+)/ and do {
-	delete $defs{$1};
-	next;
-    };
-
-    # Single line command handlers.
-
-    /^\@include\s+(.+)$/ and do {
-	push @instack, $inf;
-	$inf = gensym();
-	$file = postprocess($1);
-
-	# Try cwd and $ibase, then explicit -I paths.
-	$done = 0;
-	foreach $path ("", $ibase, @ipath) {
-	    $mypath = $file;
-	    $mypath = $path . "/" . $mypath if ($path ne "");
-	    open($inf, "<" . $mypath) and ($done = 1, last);
-	}
-	die "cannot find $file" if !$done;
-	next;
-    };
-
-    next unless $output;
-
-    # Discard comments.  (Can't do it above, because then we'd never see
-    # @c man lines.)
-    /^\@c\b/ and next;
-
-    # End-block handler goes up here because it needs to operate even
-    # if we are skipping.
-    /^\@end\s+([a-z]+)/ and do {
-	# Ignore @end foo, where foo is not an operation which may
-	# cause us to skip, if we are presently skipping.
-	my $ended = $1;
-	next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex|copying)$/;
-
-	die "\@end $ended without \@$ended at line $.\n" unless defined $endw;
-	die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw;
-
-	$endw = pop @endwstack;
-
-	if ($ended =~ /^(?:ifset|ifclear|ignore|menu|iftex)$/) {
-	    $skipping = pop @skstack;
-	    next;
-	} elsif ($ended =~ /^(?:example|smallexample|display
-                            |quotation|deftp|deftypefn)$/x) {
-	    $shift = "";
-	    $_ = "";	# need a paragraph break
-	} elsif ($ended =~ /^(?:itemize|enumerate|[fv]?table)$/) {
-	    $_ = "\n=back\n";
-	    $ic = pop @icstack;
-	} elsif ($ended eq "multitable") {
-	    $_ = "\n=back\n";
-	} else {
-	    die "unknown command \@end $ended at line $.\n";
-	}
-    };
-
-    # We must handle commands which can cause skipping even while we
-    # are skipping, otherwise we will not process nested conditionals
-    # correctly.
-    /^\@ifset\s+([a-zA-Z0-9_-]+)/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = "ifset";
-	$skipping = 1 unless exists $defs{$1};
-	next;
-    };
-
-    /^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = "ifclear";
-	$skipping = 1 if exists $defs{$1};
-	next;
-    };
-
-    /^\@(ignore|menu|iftex|copying)\b/ and do {
-	push @endwstack, $endw;
-	push @skstack, $skipping;
-	$endw = $1;
-	$skipping = 1;
-	next;
-    };
-
-    next if $skipping;
-
-    # Character entities.  First the ones that can be replaced by raw text
-    # or discarded outright:
-    s/\@copyright\{\}/(c)/g;
-    s/\@dots\{\}/.../g;
-    s/\@enddots\{\}/..../g;
-    s/\@([.!? ])/$1/g;
-    s/\@[:-]//g;
-    s/\@bullet(?:\{\})?/*/g;
-    s/\@TeX\{\}/TeX/g;
-    s/\@pounds\{\}/\#/g;
-    s/\@minus(?:\{\})?/-/g;
-    s/\\,/,/g;
-
-    # Now the ones that have to be replaced by special escapes
-    # (which will be turned back into text by unmunge())
-    s/&/&amp;/g;
-    s/\@\{/&lbrace;/g;
-    s/\@\}/&rbrace;/g;
-    s/\@\@/&at;/g;
-
-    # Inside a verbatim block, handle @var specially.
-    if ($shift ne "") {
-	s/\@var\{([^\}]*)\}/<$1>/g;
-    }
-
-    # POD doesn't interpret E<> inside a verbatim block.
-    if ($shift eq "") {
-	s/</&lt;/g;
-	s/>/&gt;/g;
-    } else {
-	s/</&LT;/g;
-	s/>/&GT;/g;
-    }
-
-    /^\@(?:section|unnumbered|unnumberedsec|center)\s+(.+)$/
-	and $_ = "\n=head2 $1\n";
-    /^\@subsection\s+(.+)$/
-	and $_ = "\n=head3 $1\n";
-    /^\@subsubsection\s+(.+)$/
-	and $_ = "\n=head4 $1\n";
-
-    # Block command handlers:
-    /^\@itemize(?:\s+(\@[a-z]+|\*|-))?/ and do {
-	push @endwstack, $endw;
-	push @icstack, $ic;
-	if (defined $1) {
-	    $ic = $1;
-	} else {
-	    $ic = '*';
-	}
-	$_ = "\n=over 4\n";
-	$endw = "itemize";
-    };
-
-    /^\@enumerate(?:\s+([a-zA-Z0-9]+))?/ and do {
-	push @endwstack, $endw;
-	push @icstack, $ic;
-	if (defined $1) {
-	    $ic = $1 . ".";
-	} else {
-	    $ic = "1.";
-	}
-	$_ = "\n=over 4\n";
-	$endw = "enumerate";
-    };
-
-    /^\@multitable\s.*/ and do {
-	push @endwstack, $endw;
-	$endw = "multitable";
-	$_ = "\n=over 4\n";
-    };
-
-    /^\@([fv]?table)\s+(\@[a-z]+)/ and do {
-	push @endwstack, $endw;
-	push @icstack, $ic;
-	$endw = $1;
-	$ic = $2;
-	$ic =~ s/\@(?:samp|strong|key|gcctabopt|option|env)/B/;
-	$ic =~ s/\@(?:code|kbd)/C/;
-	$ic =~ s/\@(?:dfn|var|emph|cite|i)/I/;
-	$ic =~ s/\@(?:file)/F/;
-	$ic =~ s/\@(?:asis)//;
-	$_ = "\n=over 4\n";
-    };
-
-    /^\@((?:small)?example|display)/ and do {
-	push @endwstack, $endw;
-	$endw = $1;
-	$shift = "\t";
-	$_ = "";	# need a paragraph break
-    };
-
-    /^\@item\s+(.*\S)\s*$/ and $endw eq "multitable" and do {
-	@columns = ();
-	for $column (split (/\s*\@tab\s*/, $1)) {
-	    # @strong{...} is used a @headitem work-alike
-	    $column =~ s/^\@strong\{(.*)\}$/$1/;
-	    push @columns, $column;
-	}
-	$_ = "\n=item ".join (" : ", @columns)."\n";
-    };
-
-    /^\@(quotation)\s*(.+)?$/ and do {
-        push @endwstack, $endw;
-        $endw = $1;
-        $_ = "\n$2:"
-    };
-
-    /^{(.*)}$|^(.*)$/ and $#args > 0 and do {
-        $kind = $args[0];
-        $arguments = $1 // "";
-        if ($endw eq "deftypefn") {
-            $ret = $args[1];
-            $fname = "B<$args[2]>";
-            $_ = $ret ? "$ret " : "";
-            $_ .= "$fname $arguments ($kind)";
-        } else {
-            $_ = "B<$args[1]> ($kind)\n\n$arguments";
-        }
-        @args = ();
-    };
-
-    /^\@(deftp)\s*(.+)?$/ and do {
-        push @endwstack, $endw;
-        $endw = $1;
-        $arg = $2;
-        $arg =~ s/{([^}]*)}/$1/g;
-        $arg =~ s/\@$//;
-        @args = split (/ /, $arg);
-        $_ = "";
-    };
-
-    /^\@(deftypefn)\s*(.+)?$/ and do {
-        push @endwstack, $endw;
-        $endw = $1;
-        $arg = $2;
-        $arg =~ s/{([^}]*)}/$1/g;
-        $arg =~ s/\@$//;
-        @args = split (/ /, $arg);
-        $_ = "";
-    };
-
-    /^\@itemx?\s*(.+)?$/ and do {
-	if (defined $1) {
-            if ($ic eq "") {
-                $_ = "\n=item $1\n";
-            } else {
-                # Entity escapes prevent munging by the <> processing below.
-                $_ = "\n=item $ic\&LT;$1\&GT;\n";
-            }
-	} else {
-	    $_ = "\n=item $ic\n";
-	    $ic =~ y/A-Ya-y/B-Zb-z/;
-	    $ic =~ s/(\d+)/$1 + 1/eg;
-	}
-    };
-
-    $section .= $shift.$_."\n";
-}
-# End of current file.
-close($inf);
-$inf = pop @instack;
-}
-
-die "No filename or title\n" unless defined $fn && defined $tl;
-
-print "=encoding $encoding\n\n" if defined $encoding;
-
-$sects{NAME} = "$fn \- $tl\n";
-$sects{FOOTNOTES} .= "=back\n" if exists $sects{FOOTNOTES};
-
-for $sect (qw(NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT FILES
-	      BUGS NOTES FOOTNOTES EXAMPLES SEEALSO AUTHOR COPYRIGHT)) {
-    if(exists $sects{$sect}) {
-	$head = $sect;
-	$head =~ s/SEEALSO/SEE ALSO/;
-	print "=head1 $head\n\n";
-	print scalar unmunge ($sects{$sect});
-	print "\n";
-    }
-}
-
-sub usage
-{
-    die "usage: $0 [-D toggle...] [infile [outfile]]\n";
-}
-
-sub postprocess
-{
-    local $_ = $_[0];
-
-    # @value{foo} is replaced by whatever 'foo' is defined as.
-    while (m/(\@value\{([a-zA-Z0-9_-]+)\})/g) {
-	if (! exists $defs{$2}) {
-	    print STDERR "Option $2 not defined\n";
-	    s/\Q$1\E//;
-	} else {
-	    $value = $defs{$2};
-	    s/\Q$1\E/$value/;
-	}
-    }
-
-    # Formatting commands.
-    # Temporary escape for @r.
-    s/\@r\{([^\}]*)\}/R<$1>/g;
-    s/\@(?:dfn|var|emph|cite|i)\{([^\}]*)\}/I<$1>/g;
-    s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g;
-    s/\@(?:gccoptlist|samp|strong|key|option|env|command|b)\{([^\}]*)\}/B<$1>/g;
-    s/\@sc\{([^\}]*)\}/\U$1/g;
-    s/\@file\{([^\}]*)\}/F<$1>/g;
-    s/\@w\{([^\}]*)\}/S<$1>/g;
-    s/\@t\{([^\}]*)\}/$1/g;
-    s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
-
-    # keep references of the form @ref{...}, print them bold
-    s/\@(?:ref)\{([^\}]*)\}/B<$1>/g;
-
-    # Change double single quotes to double quotes.
-    s/''/"/g;
-    s/``/"/g;
-
-    # Cross references are thrown away, as are @noindent and @refill.
-    # (@noindent is impossible in .pod, and @refill is unnecessary.)
-    # @* is also impossible in .pod; we discard it and any newline that
-    # follows it.  Similarly, our macro @gol must be discarded.
-
-    s/\(?\@xref\{(?:[^\}]*)\}(?:[^.<]|(?:<[^<>]*>))*\.\)?//g;
-    s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g;
-    s/;\s+\@pxref\{(?:[^\}]*)\}//g;
-    s/\@noindent\s*//g;
-    s/\@refill//g;
-    s/\@gol//g;
-    s/\@\*\s*\n?//g;
-
-    # Anchors are thrown away
-    s/\@anchor\{(?:[^\}]*)\}//g;
-
-    # @uref can take one, two, or three arguments, with different
-    # semantics each time.  @url and @email are just like @uref with
-    # one argument, for our purposes.
-    s/\@(?:uref|url|email)\{([^\},]*)\}/&lt;B<$1>&gt;/g;
-    s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
-    s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
-
-    # Un-escape <> at this point.
-    s/&LT;/</g;
-    s/&GT;/>/g;
-
-    # Now un-nest all B<>, I<>, R<>.  Theoretically we could have
-    # indefinitely deep nesting; in practice, one level suffices.
-    1 while s/([BIR])<([^<>]*)([BIR])<([^<>]*)>/$1<$2>$3<$4>$1</g;
-
-    # Replace R<...> with bare ...; eliminate empty markup, B<>;
-    # shift white space at the ends of [BI]<...> expressions outside
-    # the expression.
-    s/R<([^<>]*)>/$1/g;
-    s/[BI]<>//g;
-    s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
-    s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;
-
-    # Extract footnotes.  This has to be done after all other
-    # processing because otherwise the regexp will choke on formatting
-    # inside @footnote.
-    while (/\@footnote/g) {
-	s/\@footnote\{([^\}]+)\}/[$fnno]/;
-	add_footnote($1, $fnno);
-	$fnno++;
-    }
-
-    return $_;
-}
-
-sub unmunge
-{
-    # Replace escaped symbols with their equivalents.
-    local $_ = $_[0];
-
-    s/&lt;/E<lt>/g;
-    s/&gt;/E<gt>/g;
-    s/&lbrace;/\{/g;
-    s/&rbrace;/\}/g;
-    s/&at;/\@/g;
-    s/&amp;/&/g;
-    return $_;
-}
-
-sub add_footnote
-{
-    unless (exists $sects{FOOTNOTES}) {
-	$sects{FOOTNOTES} = "\n=over 4\n\n";
-    }
-
-    $sects{FOOTNOTES} .= "=item $fnno.\n\n"; $fnno++;
-    $sects{FOOTNOTES} .= $_[0];
-    $sects{FOOTNOTES} .= "\n\n";
-}
-
-# stolen from Symbol.pm
-{
-    my $genseq = 0;
-    sub gensym
-    {
-	my $name = "GEN" . $genseq++;
-	my $ref = \*{$name};
-	delete $::{$name};
-	return $ref;
-    }
-}