1 files changed, 137 insertions, 0 deletions
diff --git a/lib/LXRng/Lang/C.pm b/lib/LXRng/Lang/C.pm
new file mode 100644
index 0000000..c88f424
--- /dev/null
+++ b/lib/LXRng/Lang/C.pm
@@ -0,0 +1,137 @@
+package LXRng::Lang::C;
+
+use strict;
+use Subst::Complex;
+
+use base qw(LXRng::Lang::Generic);
+
+
+sub doindex {
+    return 1;
+}
+
+sub ctagslangname {
+    return 'c';
+}
+
+sub ctagsopts {
+    return ('--c-types=+lpx');
+}
+
+sub pathexp {
+    return qr/\.[ch]$/;
+}
+
+my $_identifier_re = qr(
+			(?m:^|(?<=[^a-zA-Z0-9_\#]))	# Non-symbol chars.
+			(_*[a-zA-Z][a-zA-Z0-9_]*)	# The symbol.
+			\b
+			)x;
+
+sub identifier_re {
+    return $_identifier_re;
+}
+
+my $_reserved ||= { map { $_ => 1 }
+		    qw(asm auto break case char continue default do
+		       double else enum extern float for fortran goto
+		       if int long register return short signed sizeof
+		       static struct switch typedef union unsigned
+		       void volatile while
+		       #define #else #endif #if #ifdef #ifndef #include
+		       #undef)};
+
+sub reserved {
+    return $_reserved;
+}
+
+sub parsespec {
+    return ['atom',	'\\\\.',	undef,
+	    'comment',	'/\*',		'\*/',
+	    'comment',	'//',		"\$",
+	    'string',	'"',		'"',
+	    'string',	"'",		"'",
+	    'include',	'#\s*include',	"\$"];
+}
+
+sub typemap {
+    return {
+	'c' => 'class',
+	'd' => 'macro (un)definition',
+	'e' => 'enumerator',
+	'f' => 'function definition',
+	'g' => 'enumeration name',
+	'm' => 'class, struct, or union member',
+	'n' => 'namespace',
+	'p' => 'function prototype or declaration',
+	's' => 'structure name',
+	't' => 'typedef',
+	'u' => 'union name',
+	'v' => 'variable definition',
+	'x' => 'extern or forward variable declaration',
+	'i' => 'interface'};
+}
+
+sub markuphandlers {
+    my ($self, $context, $node, $markup) = @_;
+
+    my $index = $context->config->{'index'};
+    my $syms  = $index->symbols_by_file($context->tree, $context->release,
+					$node->name);
+    my $idre  = $self->identifier_re();
+
+    my %subst;
+
+    my $format_newline = $markup->make_format_newline($node);
+    $subst{'comment'} = new Subst::Complex
+	qr/\n/     => $format_newline,
+	qr/[^\n]+/ => sub { $markup->format_comment(@_) };
+	
+    $subst{'string'} = new Subst::Complex
+	qr/\n/        => $format_newline,
+	qr/[^\n\"\']+/ => sub { $markup->format_string(@_) };
+
+    $subst{'include'} = new Subst::Complex
+	qr/\n/ => $format_newline,
+	qr/(include\s*\")(.*?)(\")/ => sub {
+	    $markup->format_include([$self->resolve_include($context, $node, @_)],
+				    @_) },
+				  
+	qr/(include\s*\<)(.*?)(\>)/ => sub {
+	    $markup->format_include([$self->resolve_include($context, $node, @_)],
+				    @_) };
+	
+    $subst{'code'} = new Subst::Complex
+	qr/\n/	   => $format_newline,
+	qr/[^\n]*/ => sub { $markup->format_code($idre, $syms, @_) };
+
+    $subst{'start'} = new Subst::Complex
+	qr/^/	   => $format_newline;
+    
+    return \%subst;
+}
+
+sub resolve_include {
+    my ($self, $context, $node, $frag) = @_;
+
+    if ($frag =~ /include\s+<(.*?)>/) {
+	return $self->expand_include($context, $node, $1);
+    }
+    elsif ($frag =~ /include\s+\"(.*?)\"/) {
+	my $incl = $1;
+	my $bare = $1;
+	my $name = $node->name();
+	if ($name =~ /(.*\/)/) {
+	    $incl = $1.$incl;
+	    1 while $incl =~ s,/[^/]+/../,/,;
+	    
+	    my $file = $context->config->{'repository'}->node($incl, $context->release);
+	    return $incl if $file;
+	    return $self->expand_include($context, $node, $bare);
+	}
+    }
+
+    return ();
+}
+
+1;