[media] docs-rst: parse-headers.pl: use the C domain for cross-references

Instead of keep using the normal reference, move to the C
domain ones. Using C domains everywhere will allow
cross-references between kAPI and uAPI docs.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/sphinx/parse-headers.pl b/Documentation/sphinx/parse-headers.pl
index 531c710..db0186a 100755 (executable)
--- a/Documentation/sphinx/parse-headers.pl
+++ b/Documentation/sphinx/parse-headers.pl
@@ -57,7 +57,7 @@ while (<IN>) {
                $n =~ tr/A-Z/a-z/;
                $n =~ tr/_/-/;
 
-               $enum_symbols{$s} = $n;
+               $enum_symbols{$s} =  "\\ :ref:`$s <$n>`\\ ";
 
                $is_enum = 0 if ($is_enum && m/\}/);
                next;
@@ -69,7 +69,7 @@ while (<IN>) {
                my $n = $1;
                $n =~ tr/A-Z/a-z/;
 
-               $ioctls{$s} = $n;
+               $ioctls{$s} = "\\ :ref:`$s <$n>`\\ ";
                next;
        }
 
@@ -79,17 +79,15 @@ while (<IN>) {
                $n =~ tr/A-Z/a-z/;
                $n =~ tr/_/-/;
 
-               $defines{$s} = $n;
+               $defines{$s} = "\\ :ref:`$s <$n>`\\ ";
                next;
        }
 
-       if ($ln =~ m/^\s*typedef\s+.*\s+([_\w][\w\d_]+);/) {
-               my $s = $1;
-               my $n = $1;
-               $n =~ tr/A-Z/a-z/;
-               $n =~ tr/_/-/;
+       if ($ln =~ m/^\s*typedef\s+([_\w][\w\d_]+)\s+(.*)\s+([_\w][\w\d_]+);/) {
+               my $s = $2;
+               my $n = $3;
 
-               $typedefs{$s} = $n;
+               $typedefs{$n} = "\\ :c:type:`$n <$s>`\\ ";
                next;
        }
        if ($ln =~ m/^\s*enum\s+([_\w][\w\d_]+)\s+\{/
@@ -97,11 +95,8 @@ while (<IN>) {
            || $ln =~ m/^\s*typedef\s*enum\s+([_\w][\w\d_]+)\s+\{/
            || $ln =~ m/^\s*typedef\s*enum\s+([_\w][\w\d_]+)$/) {
                my $s = $1;
-               my $n = $1;
-               $n =~ tr/A-Z/a-z/;
-               $n =~ tr/_/-/;
 
-               $enums{$s} = $n;
+               $enums{$s} =  "enum :c:type:`$s`\\ ";
 
                $is_enum = $1;
                next;
@@ -112,11 +107,8 @@ while (<IN>) {
            || $ln =~ m/^\s*typedef\s*struct\s+([[_\w][\w\d_]+)$/
            ) {
                my $s = $1;
-               my $n = $1;
-               $n =~ tr/A-Z/a-z/;
-               $n =~ tr/_/-/;
 
-               $structs{$s} = $n;
+               $structs{$s} = "struct :c:type:`$s`\\ ";
                next;
        }
 }
@@ -129,12 +121,9 @@ close IN;
 my @matches = ($data =~ m/typedef\s+struct\s+\S+?\s*\{[^\}]+\}\s*(\S+)\s*\;/g,
               $data =~ m/typedef\s+enum\s+\S+?\s*\{[^\}]+\}\s*(\S+)\s*\;/g,);
 foreach my $m (@matches) {
-               my $s = $m;
-               my $n = $m;
-               $n =~ tr/A-Z/a-z/;
-               $n =~ tr/_/-/;
+       my $s = $m;
 
-               $typedefs{$s} = $n;
+       $typedefs{$s} = "\\ :c:type:`$s`\\ ";
        next;
 }
 
@@ -142,6 +131,15 @@ foreach my $m (@matches) {
 # Handle exceptions, if any
 #
 
+my %def_reftype = (
+       "ioctl"   => ":ref",
+       "define"  => ":ref",
+       "symbol"  => ":ref",
+       "typedef" => ":c:type",
+       "enum"    => ":c:type",
+       "struct"  => ":c:type",
+);
+
 if ($file_exceptions) {
        open IN, $file_exceptions or die "Can't read $file_exceptions";
        while (<IN>) {
@@ -175,29 +173,49 @@ if ($file_exceptions) {
                }
 
                # Parsers to replace a symbol
+               my ($type, $old, $new, $reftype);
 
-               if (m/^replace\s+ioctl\s+(\S+)\s+(\S+)/) {
-                       $ioctls{$1} = $2 if (exists($ioctls{$1}));
+               if (m/^replace\s+(\S+)\s+(\S+)\s+(\S+)/) {
+                       $type = $1;
+                       $old = $2;
+                       $new = $3;
+               } else {
+                       die "Can't parse $file_exceptions: $_";
+               }
+
+               if ($new =~ m/^\:c\:(data|func|macro|type)\:\`(.+)\`/) {
+                       $reftype = ":c:$1";
+                       $new = $2;
+               } elsif ($new =~ m/\:ref\:\`(.+)\`/) {
+                       $reftype = ":ref";
+                       $new = $1;
+               } else {
+                       $reftype = $def_reftype{$type};
+               }
+               $new = "$reftype:`$old <$new>`";
+
+               if ($type eq "ioctl") {
+                       $ioctls{$old} = $new if (exists($ioctls{$old}));
                        next;
                }
-               if (m/^replace\s+define\s+(\S+)\s+(\S+)/) {
-                       $defines{$1} = $2 if (exists($defines{$1}));
+               if ($type eq "define") {
+                       $defines{$old} = $new if (exists($defines{$old}));
                        next;
                }
-               if (m/^replace\s+typedef\s+(\S+)\s+(\S+)/) {
-                       $typedefs{$1} = $2 if (exists($typedefs{$1}));
+               if ($type eq "symbol") {
+                       $enum_symbols{$old} = $new if (exists($enum_symbols{$old}));
                        next;
                }
-               if (m/^replace\s+enum\s+(\S+)\s+(\S+)/) {
-                       $enums{$1} = $2 if (exists($enums{$1}));
+               if ($type eq "typedef") {
+                       $typedefs{$old} = $new if (exists($typedefs{$old}));
                        next;
                }
-               if (m/^replace\s+symbol\s+(\S+)\s+(\S+)/) {
-                       $enum_symbols{$1} = $2 if (exists($enum_symbols{$1}));
+               if ($type eq "enum") {
+                       $enums{$old} = $new if (exists($enums{$old}));
                        next;
                }
-               if (m/^replace\s+struct\s+(\S+)\s+(\S+)/) {
-                       $structs{$1} = $2 if (exists($structs{$1}));
+               if ($type eq "struct") {
+                       $structs{$old} = $new if (exists($structs{$old}));
                        next;
                }
 
@@ -238,9 +256,7 @@ my $start_delim = "[ \n\t\(\=\*\@]";
 my $end_delim = "(\\s|,|\\\\=|\\\\:|\\;|\\\)|\\}|\\{)";
 
 foreach my $r (keys %ioctls) {
-       my $n = $ioctls{$r};
-
-       my $s = "\\ :ref:`$r <$n>`\\ ";
+       my $s = $ioctls{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
@@ -250,9 +266,7 @@ foreach my $r (keys %ioctls) {
 }
 
 foreach my $r (keys %defines) {
-       my $n = $defines{$r};
-
-       my $s = "\\ :ref:`$r <$n>`\\ ";
+       my $s = $defines{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
@@ -262,9 +276,7 @@ foreach my $r (keys %defines) {
 }
 
 foreach my $r (keys %enum_symbols) {
-       my $n = $enum_symbols{$r};
-
-       my $s = "\\ :ref:`$r <$n>`\\ ";
+       my $s = $enum_symbols{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
@@ -274,9 +286,7 @@ foreach my $r (keys %enum_symbols) {
 }
 
 foreach my $r (keys %enums) {
-       my $n = $enums{$r};
-
-       my $s = "\\ :ref:`enum $r <$n>`\\ ";
+       my $s = $enums{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
@@ -286,9 +296,7 @@ foreach my $r (keys %enums) {
 }
 
 foreach my $r (keys %structs) {
-       my $n = $structs{$r};
-
-       my $s = "\\ :ref:`struct $r <$n>`\\ ";
+       my $s = $structs{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
@@ -298,18 +306,15 @@ foreach my $r (keys %structs) {
 }
 
 foreach my $r (keys %typedefs) {
-       my $n = $typedefs{$r};
-
-       my $s = "\\ :ref:`$r <$n>`\\ ";
+       my $s = $typedefs{$r};
 
        $r =~ s,([\_\`\*\<\>\&\\\\:\/]),\\\\$1,g;
 
        print "$r -> $s\n" if ($debug);
-
        $data =~ s/($start_delim)($r)$end_delim/$1$s$3/g;
 }
 
-$data =~ s/\\ \n/\n/g;
+$data =~ s/\\ ([\n\s])/\1/g;
 
 #
 # Generate output file