Added Type(), IsFile(), IsDirectory(), and GetDirectoryIterator()

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3941 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/file_systems/udf/Icb.cpp

@@ -1,5 +1,7 @@
 #include "Icb.h"
 
+#include "DirectoryIterator.h"
+#include "Utils.h"
 #include "Volume.h"
 
 using namespace Udf;
@@ -8,7 +10,7 @@ Icb::Icb(Volume *volume, udf_long_address address)
 	: fVolume(NULL)
 	, fIcbData(volume ? volume->BlockSize() : 0)
 	, fInitStatus(B_NO_INIT)
-	, fId((address.block() << 16) & (address.partition()))
+	, fId(to_vnode_id(address))
 {
 	DEBUG_INIT_ETC(CF_PUBLIC, "Icb", ("Volume*(%p), long_address(block: %ld, partition: %d, length: %ld)", volume, address.block(), address.partition(), address.length()));  
 	status_t err = volume ? B_OK : B_BAD_VALUE;
@@ -31,3 +33,22 @@ Icb::InitCheck()
 {
 	return fInitStatus;
 }
+
+status_t
+Icb::GetDirectoryIterator(DirectoryIterator **iterator)
+{
+	status_t err = iterator ? B_OK : B_BAD_VALUE;
+
+	if (!err) {
+		*iterator = new DirectoryIterator(this);
+		if (*iterator) {
+			err = fIteratorList.PushBack(*iterator);
+		} else {
+			err = B_NO_MEMORY;
+		}
+	}
+	
+	return err;
+}
+
+

src/add-ons/kernel/file_systems/udf/Icb.h

@@ -23,9 +23,11 @@ extern "C" {
 
 #include "DiskStructures.h"
 #include "MemoryChunk.h"
+#include "SinglyLinkedList.h"
 
 namespace Udf {
 
+class DirectoryIterator;
 class Volume;
 
 class Icb {
@@ -33,13 +35,29 @@ public:
 	Icb(Volume *volume, udf_long_address address);
 	status_t InitCheck();
 	vnode_id Id() { return fId; }
+	
+	// categorization
+	uint8 Type() { return IcbTag().file_type(); }
+	bool IsFile() { return InitCheck() == B_OK && Type() == ICB_TYPE_REGULAR_FILE; }
+	bool IsDirectory() { return InitCheck() == B_OK
+	                     && (Type() == ICB_TYPE_DIRECTORY || Type() == ICB_TYPE_STREAM_DIRECTORY); }
+	
+	// directories
+	status_t GetDirectoryIterator(DirectoryIterator **iterator);
+	
 private:
 	Icb();	// unimplemented
+	
+	udf_icb_entry_tag& IcbTag() { return (reinterpret_cast<udf_icb_header*>(fIcbData.Data()))->icb_tag(); }
+
+
+	
 private:
 	Volume *fVolume;
 	MemoryChunk fIcbData;
 	status_t fInitStatus;
 	vnode_id fId;
+	SinglyLinkedList<Strategy::SinglyLinkedList::Auto<DirectoryIterator*> > fIteratorList;
 };
 
 };	// namespace Udf