* texi2pod.pl: Correct handling of absolute @include.

[pf3gnuchains/gcc-fork.git] / contrib / texi2pod.pl

diff --git a/contrib/texi2pod.pl b/contrib/texi2pod.pl
index 0cae122..ed0d102 100755 (executable)
--- a/contrib/texi2pod.pl
+++ b/contrib/texi2pod.pl
@@ -1,23 +1,23 @@
 #! /usr/bin/perl -w
 
-#   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+#   Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 
-# This file is part of GNU CC.
+# This file is part of GCC.
 
-# GNU CC is free software; you can redistribute it and/or modify
+# 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.
 
-# GNU CC is distributed in the hope that it will be useful,
+# 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 GNU CC; see the file COPYING.  If not, write to
-# the Free Software Foundation, 59 Temple Place - Suite 330,
-# Boston MA 02111-1307, USA.
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston MA 02110-1301, USA.
 
 # This does trivial (and I mean _trivial_) conversion of Texinfo
 # markup to Perl POD format.  It's intended to be used to extract
@@ -36,6 +36,7 @@ $shift = "";
 $fnno = 1;
 $inf = "";
 $ibase = "";
+@ipath = ();
 
 while ($_ = shift) {
     if (/^-D(.*)$/) {
@@ -51,6 +52,13 @@ while ($_ = shift) {
        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, $flag);
     } elsif (/^-/) {
        usage();
     } else {
@@ -138,7 +146,7 @@ while(<$inf>) {
        # 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 && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex)$/;
+       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 $endw;
@@ -151,7 +159,7 @@ while(<$inf>) {
        } elsif ($ended =~ /^(?:example|smallexample|display)$/) {
            $shift = "";
            $_ = "";    # need a paragraph break
-       } elsif ($ended =~ /^(?:itemize|enumerate|table)$/) {
+       } elsif ($ended =~ /^(?:itemize|enumerate|[fv]?table)$/) {
            $_ = "\n=back\n";
            $ic = pop @icstack;
        } else {
@@ -178,7 +186,7 @@ while(<$inf>) {
        next;
     };
 
-    /^\@(ignore|menu|iftex)\b/ and do {
+    /^\@(ignore|menu|iftex|copying)\b/ and do {
        push @endwstack, $endw;
        push @skstack, $skipping;
        $endw = $1;
@@ -227,11 +235,16 @@ while(<$inf>) {
     /^\@include\s+(.+)$/ and do {
        push @instack, $inf;
        $inf = gensym();
-
-       # Try cwd and $ibase.
-       open($inf, "<" . $1) 
-           or open($inf, "<" . $ibase . "/" . $1)
-               or die "cannot open $1 or $ibase/$1: $!\n";
+       $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;
     };
 
@@ -241,10 +254,14 @@ while(<$inf>) {
        and $_ = "\n=head3 $1\n";
 
     # Block command handlers:
-    /^\@itemize\s+(\@[a-z]+|\*|-)/ and do {
+    /^\@itemize(?:\s+(\@[a-z]+|\*|-))?/ and do {
        push @endwstack, $endw;
        push @icstack, $ic;
-       $ic = $1;
+       if (defined $1) {
+           $ic = $1;
+       } else {
+           $ic = '@bullet';
+       }
        $_ = "\n=over 4\n";
        $endw = "itemize";
     };
@@ -345,6 +362,13 @@ sub postprocess
     s/\@w\{([^\}]*)\}/S<$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
@@ -365,14 +389,18 @@ sub postprocess
     s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
     s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
 
-    # Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
-    # match Texinfo semantics of @emph inside @samp.  Also handle @r
-    # inside bold.
+    # Un-escape <> at this point.
     s/&LT;/</g;
     s/&GT;/>/g;
-    1 while s/B<((?:[^<>]|I<[^<>]*>)*)R<([^>]*)>/B<$1>${2}B</g;
-    1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
-    1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</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;