Update texi2pod.pl.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3964 c046a42c-6fe2-441c-8c8c-71466251a162
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texi2pod.pl
94
texi2pod.pl
@ -1,23 +1,23 @@
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#! /usr/bin/perl -w
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# Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
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# Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
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# This file is part of GNU CC.
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# This file is part of GCC.
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# GNU CC is free software; you can redistribute it and/or modify
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# GCC is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# GNU CC is distributed in the hope that it will be useful,
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# GCC is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with GNU CC; see the file COPYING. If not, write to
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# the Free Software Foundation, 59 Temple Place - Suite 330,
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# Boston MA 02111-1307, USA.
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# along with GCC; see the file COPYING. If not, write to
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# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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# Boston MA 02110-1301, USA.
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# This does trivial (and I mean _trivial_) conversion of Texinfo
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# markup to Perl POD format. It's intended to be used to extract
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@ -36,6 +36,7 @@ $shift = "";
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$fnno = 1;
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$inf = "";
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$ibase = "";
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@ipath = ();
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while ($_ = shift) {
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if (/^-D(.*)$/) {
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@ -51,6 +52,13 @@ while ($_ = shift) {
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die "flags may only contain letters, digits, hyphens, dashes and underscores\n"
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unless $flag =~ /^[a-zA-Z0-9_-]+$/;
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$defs{$flag} = $value;
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} elsif (/^-I(.*)$/) {
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if ($1 ne "") {
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$flag = $1;
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} else {
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$flag = shift;
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}
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push (@ipath, $flag);
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} elsif (/^-/) {
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usage();
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} else {
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@ -138,7 +146,7 @@ while(<$inf>) {
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# Ignore @end foo, where foo is not an operation which may
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# cause us to skip, if we are presently skipping.
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my $ended = $1;
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next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex)$/;
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next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex|copying)$/;
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die "\@end $ended without \@$ended at line $.\n" unless defined $endw;
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die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw;
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@ -154,6 +162,8 @@ while(<$inf>) {
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} elsif ($ended =~ /^(?:itemize|enumerate|[fv]?table)$/) {
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$_ = "\n=back\n";
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$ic = pop @icstack;
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} elsif ($ended eq "multitable") {
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$_ = "\n=back\n";
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} else {
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die "unknown command \@end $ended at line $.\n";
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}
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@ -178,7 +188,7 @@ while(<$inf>) {
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next;
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};
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/^\@(ignore|menu|iftex)\b/ and do {
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/^\@(ignore|menu|iftex|copying)\b/ and do {
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push @endwstack, $endw;
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push @skstack, $skipping;
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$endw = $1;
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@ -227,11 +237,16 @@ while(<$inf>) {
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/^\@include\s+(.+)$/ and do {
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push @instack, $inf;
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$inf = gensym();
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$file = postprocess($1);
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# Try cwd and $ibase.
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open($inf, "<" . $1)
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or open($inf, "<" . $ibase . "/" . $1)
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or die "cannot open $1 or $ibase/$1: $!\n";
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# Try cwd and $ibase, then explicit -I paths.
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$done = 0;
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foreach $path ("", $ibase, @ipath) {
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$mypath = $file;
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$mypath = $path . "/" . $mypath if ($path ne "");
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open($inf, "<" . $mypath) and ($done = 1, last);
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}
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die "cannot find $file" if !$done;
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next;
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};
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@ -239,12 +254,18 @@ while(<$inf>) {
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and $_ = "\n=head2 $1\n";
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/^\@subsection\s+(.+)$/
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and $_ = "\n=head3 $1\n";
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/^\@subsubsection\s+(.+)$/
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and $_ = "\n=head4 $1\n";
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# Block command handlers:
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/^\@itemize\s+(\@[a-z]+|\*|-)/ and do {
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/^\@itemize(?:\s+(\@[a-z]+|\*|-))?/ and do {
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push @endwstack, $endw;
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push @icstack, $ic;
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$ic = $1;
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if (defined $1) {
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$ic = $1;
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} else {
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$ic = '*';
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}
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$_ = "\n=over 4\n";
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$endw = "itemize";
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};
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@ -261,6 +282,12 @@ while(<$inf>) {
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$endw = "enumerate";
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};
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/^\@multitable\s.*/ and do {
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push @endwstack, $endw;
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$endw = "multitable";
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$_ = "\n=over 4\n";
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};
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/^\@([fv]?table)\s+(\@[a-z]+)/ and do {
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push @endwstack, $endw;
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push @icstack, $ic;
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@ -280,10 +307,19 @@ while(<$inf>) {
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$_ = ""; # need a paragraph break
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};
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/^\@item\s+(.*\S)\s*$/ and $endw eq "multitable" and do {
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@columns = ();
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for $column (split (/\s*\@tab\s*/, $1)) {
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# @strong{...} is used a @headitem work-alike
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$column =~ s/^\@strong{(.*)}$/$1/;
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push @columns, $column;
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}
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$_ = "\n=item ".join (" : ", @columns)."\n";
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};
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/^\@itemx?\s*(.+)?$/ and do {
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if (defined $1) {
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# Entity escapes prevent munging by the <> processing below.
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# print "$ic\n";
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$_ = "\n=item $ic\<$1\>\n";
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} else {
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$_ = "\n=item $ic\n";
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@ -346,6 +382,13 @@ sub postprocess
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s/\@w\{([^\}]*)\}/S<$1>/g;
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s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
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# keep references of the form @ref{...}, print them bold
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s/\@(?:ref)\{([^\}]*)\}/B<$1>/g;
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# Change double single quotes to double quotes.
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s/''/"/g;
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s/``/"/g;
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# Cross references are thrown away, as are @noindent and @refill.
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# (@noindent is impossible in .pod, and @refill is unnecessary.)
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# @* is also impossible in .pod; we discard it and any newline that
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@ -359,6 +402,9 @@ sub postprocess
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s/\@gol//g;
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s/\@\*\s*\n?//g;
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# Anchors are thrown away
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s/\@anchor\{(?:[^\}]*)\}//g;
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# @uref can take one, two, or three arguments, with different
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# semantics each time. @url and @email are just like @uref with
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# one argument, for our purposes.
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@ -366,14 +412,18 @@ sub postprocess
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s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
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s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
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# Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
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# match Texinfo semantics of @emph inside @samp. Also handle @r
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# inside bold.
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# Un-escape <> at this point.
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s/</</g;
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s/>/>/g;
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1 while s/B<((?:[^<>]|I<[^<>]*>)*)R<([^>]*)>/B<$1>${2}B</g;
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1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
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1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</g);
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# Now un-nest all B<>, I<>, R<>. Theoretically we could have
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# indefinitely deep nesting; in practice, one level suffices.
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1 while s/([BIR])<([^<>]*)([BIR])<([^<>]*)>/$1<$2>$3<$4>$1</g;
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# Replace R<...> with bare ...; eliminate empty markup, B<>;
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# shift white space at the ends of [BI]<...> expressions outside
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# the expression.
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s/R<([^<>]*)>/$1/g;
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s/[BI]<>//g;
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s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
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s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;
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