Add m-esr52 at 52.6.0

1 files changed, 1328 insertions, 0 deletions

diff --git a/rdf/datasource/nsFileSystemDataSource.cpp b/rdf/datasource/nsFileSystemDataSource.cpp
new file mode 100644
index 000000000..35632d1a3
--- /dev/null
+++ b/rdf/datasource/nsFileSystemDataSource.cpp
@@ -0,0 +1,1328 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+  Implementation for a file system RDF data store.
+ */
+
+#include "nsFileSystemDataSource.h"
+
+#include <ctype.h> // for toupper()
+#include <stdio.h>
+#include "nsArrayEnumerator.h"
+#include "nsCOMArray.h"
+#include "nsIRDFDataSource.h"
+#include "nsIRDFObserver.h"
+#include "nsIServiceManager.h"
+#include "nsXPIDLString.h"
+#include "nsRDFCID.h"
+#include "rdfutil.h"
+#include "rdf.h"
+#include "nsEnumeratorUtils.h"
+#include "nsIURL.h"
+#include "nsIFileURL.h"
+#include "nsNetUtil.h"
+#include "nsIInputStream.h"
+#include "nsIChannel.h"
+#include "nsIFile.h"
+#include "nsEscape.h"
+#include "nsCRTGlue.h"
+#include "nsAutoPtr.h"
+#include "prtime.h"
+
+#ifdef XP_WIN
+#include "windef.h"
+#include "winbase.h"
+#include "nsILineInputStream.h"
+#include "nsDirectoryServiceDefs.h"
+#endif
+
+#define NS_MOZICON_SCHEME           "moz-icon:"
+
+static const char kFileProtocol[]         = "file://";
+
+bool
+FileSystemDataSource::isFileURI(nsIRDFResource *r)
+{
+    bool        isFileURIFlag = false;
+    const char  *uri = nullptr;
+    
+    r->GetValueConst(&uri);
+    if ((uri) && (!strncmp(uri, kFileProtocol, sizeof(kFileProtocol) - 1)))
+    {
+        // XXX HACK HACK HACK
+        if (!strchr(uri, '#'))
+        {
+            isFileURIFlag = true;
+        }
+    }
+    return(isFileURIFlag);
+}
+
+
+
+bool
+FileSystemDataSource::isDirURI(nsIRDFResource* source)
+{
+    nsresult    rv;
+    const char  *uri = nullptr;
+
+    rv = source->GetValueConst(&uri);
+    if (NS_FAILED(rv)) return(false);
+
+    nsCOMPtr<nsIFile> aDir;
+
+    rv = NS_GetFileFromURLSpec(nsDependentCString(uri), getter_AddRefs(aDir));
+    if (NS_FAILED(rv)) return(false);
+
+    bool isDirFlag = false;
+
+    rv = aDir->IsDirectory(&isDirFlag);
+    if (NS_FAILED(rv)) return(false);
+
+    return(isDirFlag);
+}
+
+
+nsresult
+FileSystemDataSource::Init()
+{
+    nsresult rv;
+
+    mRDFService = do_GetService("@mozilla.org/rdf/rdf-service;1");
+    NS_ENSURE_TRUE(mRDFService, NS_ERROR_FAILURE);
+
+    rv =  mRDFService->GetResource(NS_LITERAL_CSTRING("NC:FilesRoot"),
+                                   getter_AddRefs(mNC_FileSystemRoot));
+    nsresult tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "child"),
+                                   getter_AddRefs(mNC_Child));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "Name"),
+                                   getter_AddRefs(mNC_Name));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "URL"),
+                                   getter_AddRefs(mNC_URL));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "Icon"),
+                                   getter_AddRefs(mNC_Icon));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "Content-Length"),
+                                   getter_AddRefs(mNC_Length));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "IsDirectory"),
+                                   getter_AddRefs(mNC_IsDirectory));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(WEB_NAMESPACE_URI "LastModifiedDate"),
+                                   getter_AddRefs(mWEB_LastMod));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "FileSystemObject"),
+                                   getter_AddRefs(mNC_FileSystemObject));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI  "pulse"),
+                                   getter_AddRefs(mNC_pulse));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(RDF_NAMESPACE_URI "instanceOf"),
+                                   getter_AddRefs(mRDF_InstanceOf));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(RDF_NAMESPACE_URI "type"),
+                                   getter_AddRefs(mRDF_type));
+
+    static const char16_t kTrue[] = {'t','r','u','e','\0'};
+    static const char16_t kFalse[] = {'f','a','l','s','e','\0'};
+
+    tmp = mRDFService->GetLiteral(kTrue, getter_AddRefs(mLiteralTrue));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    tmp = mRDFService->GetLiteral(kFalse, getter_AddRefs(mLiteralFalse));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE);
+
+#ifdef USE_NC_EXTENSION
+    rv = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "extension"),
+                                  getter_AddRefs(mNC_extension));
+    NS_ENSURE_SUCCESS(rv, rv);
+#endif
+
+#ifdef XP_WIN
+    rv =  mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "IEFavorite"),
+                                  getter_AddRefs(mNC_IEFavoriteObject));
+    tmp = mRDFService->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "IEFavoriteFolder"),
+                                   getter_AddRefs(mNC_IEFavoriteFolder));
+    if (NS_FAILED(tmp)) {
+      rv = tmp;
+    }
+    NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE);
+
+    nsCOMPtr<nsIFile> file;
+    NS_GetSpecialDirectory(NS_WIN_FAVORITES_DIR, getter_AddRefs(file));
+    if (file)
+    {
+        nsCOMPtr<nsIURI> furi;
+        NS_NewFileURI(getter_AddRefs(furi), file);
+        NS_ENSURE_TRUE(furi, NS_ERROR_FAILURE);
+
+        file->GetNativePath(ieFavoritesDir);
+    }
+#endif
+
+    return NS_OK;
+}
+
+//static
+nsresult
+FileSystemDataSource::Create(nsISupports* aOuter, const nsIID& aIID, void **aResult)
+{
+    NS_ENSURE_NO_AGGREGATION(aOuter);
+
+    RefPtr<FileSystemDataSource> self = new FileSystemDataSource();
+    if (!self)
+        return NS_ERROR_OUT_OF_MEMORY;
+     
+    nsresult rv = self->Init();
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    return self->QueryInterface(aIID, aResult);
+}
+
+NS_IMPL_ISUPPORTS(FileSystemDataSource, nsIRDFDataSource)
+
+NS_IMETHODIMP
+FileSystemDataSource::GetURI(char **uri)
+{
+    NS_PRECONDITION(uri != nullptr, "null ptr");
+    if (! uri)
+        return NS_ERROR_NULL_POINTER;
+
+    if ((*uri = NS_strdup("rdf:files")) == nullptr)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    return NS_OK;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetSource(nsIRDFResource* property,
+                                nsIRDFNode* target,
+                                bool tv,
+                                nsIRDFResource** source /* out */)
+{
+    NS_PRECONDITION(property != nullptr, "null ptr");
+    if (! property)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(target != nullptr, "null ptr");
+    if (! target)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(source != nullptr, "null ptr");
+    if (! source)
+        return NS_ERROR_NULL_POINTER;
+
+    *source = nullptr;
+    return NS_RDF_NO_VALUE;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetSources(nsIRDFResource *property,
+                                 nsIRDFNode *target,
+                                 bool tv,
+                                 nsISimpleEnumerator **sources /* out */)
+{
+//  NS_NOTYETIMPLEMENTED("write me");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetTarget(nsIRDFResource *source,
+                                nsIRDFResource *property,
+                                bool tv,
+                                nsIRDFNode **target /* out */)
+{
+    NS_PRECONDITION(source != nullptr, "null ptr");
+    if (! source)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(property != nullptr, "null ptr");
+    if (! property)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(target != nullptr, "null ptr");
+    if (! target)
+        return NS_ERROR_NULL_POINTER;
+
+    *target = nullptr;
+
+    nsresult        rv = NS_RDF_NO_VALUE;
+
+    // we only have positive assertions in the file system data source.
+    if (! tv)
+        return NS_RDF_NO_VALUE;
+
+    if (source == mNC_FileSystemRoot)
+    {
+        if (property == mNC_pulse)
+        {
+            nsIRDFLiteral   *pulseLiteral;
+            mRDFService->GetLiteral(u"12", &pulseLiteral);
+            *target = pulseLiteral;
+            return NS_OK;
+        }
+    }
+    else if (isFileURI(source))
+    {
+        if (property == mNC_Name)
+        {
+            nsCOMPtr<nsIRDFLiteral> name;
+            rv = GetName(source, getter_AddRefs(name));
+            if (NS_FAILED(rv)) return(rv);
+            if (!name)  rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE)  return(rv);
+            return name->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+        else if (property == mNC_URL)
+        {
+            nsCOMPtr<nsIRDFLiteral> url;
+            rv = GetURL(source, nullptr, getter_AddRefs(url));
+            if (NS_FAILED(rv)) return(rv);
+            if (!url)   rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE)  return(rv);
+
+            return url->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+        else if (property == mNC_Icon)
+        {
+            nsCOMPtr<nsIRDFLiteral> url;
+            bool isFavorite = false;
+            rv = GetURL(source, &isFavorite, getter_AddRefs(url));
+            if (NS_FAILED(rv)) return(rv);
+            if (isFavorite || !url) rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE)  return(rv);
+            
+            const char16_t *uni = nullptr;
+            url->GetValueConst(&uni);
+            if (!uni)   return(NS_RDF_NO_VALUE);
+            nsAutoString    urlStr;
+            urlStr.AssignLiteral(NS_MOZICON_SCHEME);
+            urlStr.Append(uni);
+
+            rv = mRDFService->GetLiteral(urlStr.get(), getter_AddRefs(url));
+            if (NS_FAILED(rv) || !url)    return(NS_RDF_NO_VALUE);
+            return url->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+        else if (property == mNC_Length)
+        {
+            nsCOMPtr<nsIRDFInt> fileSize;
+            rv = GetFileSize(source, getter_AddRefs(fileSize));
+            if (NS_FAILED(rv)) return(rv);
+            if (!fileSize)  rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE)  return(rv);
+
+            return fileSize->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+        else  if (property == mNC_IsDirectory)
+        {
+            *target = (isDirURI(source)) ? mLiteralTrue : mLiteralFalse;
+            NS_ADDREF(*target);
+            return NS_OK;
+        }
+        else if (property == mWEB_LastMod)
+        {
+            nsCOMPtr<nsIRDFDate> lastMod;
+            rv = GetLastMod(source, getter_AddRefs(lastMod));
+            if (NS_FAILED(rv)) return(rv);
+            if (!lastMod)   rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE)  return(rv);
+
+            return lastMod->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+        else if (property == mRDF_type)
+        {
+            nsCString type;
+            rv = mNC_FileSystemObject->GetValueUTF8(type);
+            if (NS_FAILED(rv)) return(rv);
+
+#ifdef  XP_WIN
+            // under Windows, if its an IE favorite, return that type
+            if (!ieFavoritesDir.IsEmpty())
+            {
+                nsCString uri;
+                rv = source->GetValueUTF8(uri);
+                if (NS_FAILED(rv)) return(rv);
+
+                NS_ConvertUTF8toUTF16 theURI(uri);
+
+                if (theURI.Find(ieFavoritesDir) == 0)
+                {
+                    if (theURI[theURI.Length() - 1] == '/')
+                    {
+                        rv = mNC_IEFavoriteFolder->GetValueUTF8(type);
+                    }
+                    else
+                    {
+                        rv = mNC_IEFavoriteObject->GetValueUTF8(type);
+                    }
+                    if (NS_FAILED(rv)) return(rv);
+                }
+            }
+#endif
+
+            NS_ConvertUTF8toUTF16 url(type);
+            nsCOMPtr<nsIRDFLiteral> literal;
+            mRDFService->GetLiteral(url.get(), getter_AddRefs(literal));
+            rv = literal->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+            return(rv);
+        }
+        else if (property == mNC_pulse)
+        {
+            nsCOMPtr<nsIRDFLiteral> pulseLiteral;
+            mRDFService->GetLiteral(u"12", getter_AddRefs(pulseLiteral));
+            rv = pulseLiteral->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+            return(rv);
+        }
+        else if (property == mNC_Child)
+        {
+            // Oh this is evil. Somebody kill me now.
+            nsCOMPtr<nsISimpleEnumerator> children;
+            rv = GetFolderList(source, false, true, getter_AddRefs(children));
+            if (NS_FAILED(rv) || (rv == NS_RDF_NO_VALUE)) return(rv);
+
+            bool hasMore;
+            rv = children->HasMoreElements(&hasMore);
+            if (NS_FAILED(rv)) return(rv);
+
+            if (hasMore)
+            {
+                nsCOMPtr<nsISupports> isupports;
+                rv = children->GetNext(getter_AddRefs(isupports));
+                if (NS_FAILED(rv)) return(rv);
+
+                return isupports->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+            }
+        }
+#ifdef USE_NC_EXTENSION
+        else if (property == mNC_extension)
+        {
+            nsCOMPtr<nsIRDFLiteral> extension;
+            rv = GetExtension(source, getter_AddRefs(extension));
+            if (!extension)    rv = NS_RDF_NO_VALUE;
+            if (rv == NS_RDF_NO_VALUE) return(rv);
+            return extension->QueryInterface(NS_GET_IID(nsIRDFNode), (void**) target);
+        }
+#endif
+    }
+
+    return(NS_RDF_NO_VALUE);
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetTargets(nsIRDFResource *source,
+                nsIRDFResource *property,
+                bool tv,
+                nsISimpleEnumerator **targets /* out */)
+{
+    NS_PRECONDITION(source != nullptr, "null ptr");
+    if (! source)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(property != nullptr, "null ptr");
+    if (! property)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(targets != nullptr, "null ptr");
+    if (! targets)
+        return NS_ERROR_NULL_POINTER;
+
+    *targets = nullptr;
+
+    // we only have positive assertions in the file system data source.
+    if (! tv)
+        return NS_RDF_NO_VALUE;
+
+    nsresult rv;
+
+    if (source == mNC_FileSystemRoot)
+    {
+        if (property == mNC_Child)
+        {
+            return GetVolumeList(targets);
+        }
+        else if (property == mNC_pulse)
+        {
+            nsCOMPtr<nsIRDFLiteral> pulseLiteral;
+            mRDFService->GetLiteral(u"12",
+                                    getter_AddRefs(pulseLiteral));
+            return NS_NewSingletonEnumerator(targets, pulseLiteral);
+        }
+    }
+    else if (isFileURI(source))
+    {
+        if (property == mNC_Child)
+        {
+            return GetFolderList(source, false, false, targets);
+        }
+        else if (property == mNC_Name)
+        {
+            nsCOMPtr<nsIRDFLiteral> name;
+            rv = GetName(source, getter_AddRefs(name));
+            if (NS_FAILED(rv)) return rv;
+
+            return NS_NewSingletonEnumerator(targets, name);
+        }
+        else if (property == mNC_URL)
+        {
+            nsCOMPtr<nsIRDFLiteral> url;
+            rv = GetURL(source, nullptr, getter_AddRefs(url));
+            if (NS_FAILED(rv)) return rv;
+
+            return NS_NewSingletonEnumerator(targets, url);
+        }
+        else if (property == mRDF_type)
+        {
+            nsCString uri;
+            rv = mNC_FileSystemObject->GetValueUTF8(uri);
+            if (NS_FAILED(rv)) return rv;
+
+            NS_ConvertUTF8toUTF16 url(uri);
+
+            nsCOMPtr<nsIRDFLiteral> literal;
+            rv = mRDFService->GetLiteral(url.get(), getter_AddRefs(literal));
+            if (NS_FAILED(rv)) return rv;
+
+            return NS_NewSingletonEnumerator(targets, literal);
+        }
+        else if (property == mNC_pulse)
+        {
+            nsCOMPtr<nsIRDFLiteral> pulseLiteral;
+            rv = mRDFService->GetLiteral(u"12",
+                getter_AddRefs(pulseLiteral));
+            if (NS_FAILED(rv)) return rv;
+
+            return NS_NewSingletonEnumerator(targets, pulseLiteral);
+        }
+    }
+
+    return NS_NewEmptyEnumerator(targets);
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::Assert(nsIRDFResource *source,
+                       nsIRDFResource *property,
+                       nsIRDFNode *target,
+                       bool tv)
+{
+    return NS_RDF_ASSERTION_REJECTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::Unassert(nsIRDFResource *source,
+                         nsIRDFResource *property,
+                         nsIRDFNode *target)
+{
+    return NS_RDF_ASSERTION_REJECTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::Change(nsIRDFResource* aSource,
+                             nsIRDFResource* aProperty,
+                             nsIRDFNode* aOldTarget,
+                             nsIRDFNode* aNewTarget)
+{
+    return NS_RDF_ASSERTION_REJECTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::Move(nsIRDFResource* aOldSource,
+                           nsIRDFResource* aNewSource,
+                           nsIRDFResource* aProperty,
+                           nsIRDFNode* aTarget)
+{
+    return NS_RDF_ASSERTION_REJECTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::HasAssertion(nsIRDFResource *source,
+                             nsIRDFResource *property,
+                             nsIRDFNode *target,
+                             bool tv,
+                             bool *hasAssertion /* out */)
+{
+    NS_PRECONDITION(source != nullptr, "null ptr");
+    if (! source)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(property != nullptr, "null ptr");
+    if (! property)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(target != nullptr, "null ptr");
+    if (! target)
+        return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(hasAssertion != nullptr, "null ptr");
+    if (! hasAssertion)
+        return NS_ERROR_NULL_POINTER;
+
+    // we only have positive assertions in the file system data source.
+    *hasAssertion = false;
+
+    if (! tv) {
+        return NS_OK;
+    }
+
+    if ((source == mNC_FileSystemRoot) || isFileURI(source))
+    {
+        if (property == mRDF_type)
+        {
+            nsCOMPtr<nsIRDFResource> resource( do_QueryInterface(target) );
+            if (resource.get() == mRDF_type)
+            {
+                *hasAssertion = true;
+            }
+        }
+#ifdef USE_NC_EXTENSION
+        else if (property == mNC_extension)
+        {
+            // Cheat just a little here by making dirs always match
+            if (isDirURI(source))
+            {
+                *hasAssertion = true;
+            }
+            else
+            {
+                nsCOMPtr<nsIRDFLiteral> extension;
+                GetExtension(source, getter_AddRefs(extension));
+                if (extension.get() == target)
+                {
+                    *hasAssertion = true;
+                }
+            }
+        }
+#endif
+        else if (property == mNC_IsDirectory)
+        {
+            bool isDir = isDirURI(source);
+            bool isEqual = false;
+            target->EqualsNode(mLiteralTrue, &isEqual);
+            if (isEqual)
+            {
+                *hasAssertion = isDir;
+            }
+            else
+            {
+                target->EqualsNode(mLiteralFalse, &isEqual);
+                if (isEqual)
+                    *hasAssertion = !isDir;
+            }
+        }
+    }
+
+    return NS_OK;
+}
+
+
+
+NS_IMETHODIMP 
+FileSystemDataSource::HasArcIn(nsIRDFNode *aNode, nsIRDFResource *aArc, bool *result)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP 
+FileSystemDataSource::HasArcOut(nsIRDFResource *aSource, nsIRDFResource *aArc, bool *result)
+{
+    *result = false;
+
+    if (aSource == mNC_FileSystemRoot)
+    {
+        *result = (aArc == mNC_Child || aArc == mNC_pulse);
+    }
+    else if (isFileURI(aSource))
+    {
+        if (aArc == mNC_pulse)
+        {
+            *result = true;
+        }
+        else if (isDirURI(aSource))
+        {
+#ifdef  XP_WIN
+            *result = isValidFolder(aSource);
+#else
+            *result = true;
+#endif
+        }
+        else if (aArc == mNC_pulse || aArc == mNC_Name || aArc == mNC_Icon ||
+                 aArc == mNC_URL || aArc == mNC_Length || aArc == mWEB_LastMod ||
+                 aArc == mNC_FileSystemObject || aArc == mRDF_InstanceOf ||
+                 aArc == mRDF_type)
+        {
+            *result = true;
+        }
+    }
+    return NS_OK;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::ArcLabelsIn(nsIRDFNode *node,
+                            nsISimpleEnumerator ** labels /* out */)
+{
+//  NS_NOTYETIMPLEMENTED("write me");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::ArcLabelsOut(nsIRDFResource *source,
+                   nsISimpleEnumerator **labels /* out */)
+{
+    NS_PRECONDITION(source != nullptr, "null ptr");
+    if (! source)
+    return NS_ERROR_NULL_POINTER;
+
+    NS_PRECONDITION(labels != nullptr, "null ptr");
+    if (! labels)
+    return NS_ERROR_NULL_POINTER;
+
+    if (source == mNC_FileSystemRoot)
+    {
+        nsCOMArray<nsIRDFResource> resources;
+        resources.SetCapacity(2);
+
+        resources.AppendObject(mNC_Child);
+        resources.AppendObject(mNC_pulse);
+
+        return NS_NewArrayEnumerator(labels, resources);
+    }
+    else if (isFileURI(source))
+    {
+        nsCOMArray<nsIRDFResource> resources;
+        resources.SetCapacity(2);
+
+        if (isDirURI(source))
+        {
+#ifdef  XP_WIN
+            if (isValidFolder(source))
+            {
+                resources.AppendObject(mNC_Child);
+            }
+#else
+            resources.AppendObject(mNC_Child);
+#endif
+            resources.AppendObject(mNC_pulse);
+        }
+
+        return NS_NewArrayEnumerator(labels, resources);
+    }
+
+    return NS_NewEmptyEnumerator(labels);
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetAllResources(nsISimpleEnumerator** aCursor)
+{
+    NS_NOTYETIMPLEMENTED("sorry!");
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::AddObserver(nsIRDFObserver *n)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::RemoveObserver(nsIRDFObserver *n)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::GetAllCmds(nsIRDFResource* source,
+                                     nsISimpleEnumerator/*<nsIRDFResource>*/** commands)
+{
+    return(NS_NewEmptyEnumerator(commands));
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::IsCommandEnabled(nsISupports/*<nsIRDFResource>*/* aSources,
+                                       nsIRDFResource*   aCommand,
+                                       nsISupports/*<nsIRDFResource>*/* aArguments,
+                                       bool* aResult)
+{
+    return(NS_ERROR_NOT_IMPLEMENTED);
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::DoCommand(nsISupports/*<nsIRDFResource>*/* aSources,
+                                nsIRDFResource*   aCommand,
+                                nsISupports/*<nsIRDFResource>*/* aArguments)
+{
+    return(NS_ERROR_NOT_IMPLEMENTED);
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::BeginUpdateBatch()
+{
+    return NS_OK;
+}
+
+
+
+NS_IMETHODIMP
+FileSystemDataSource::EndUpdateBatch()
+{
+    return NS_OK;
+}
+
+
+
+nsresult
+FileSystemDataSource::GetVolumeList(nsISimpleEnumerator** aResult)
+{
+    nsCOMArray<nsIRDFResource> volumes;
+    nsCOMPtr<nsIRDFResource> vol;
+
+#ifdef XP_WIN
+
+    int32_t         driveType;
+    wchar_t         drive[32];
+    int32_t         volNum;
+
+    for (volNum = 0; volNum < 26; volNum++)
+    {
+        swprintf_s(drive, 32, L"%c:\\", volNum + (char16_t)'A');
+
+        driveType = GetDriveTypeW(drive);
+        if (driveType != DRIVE_UNKNOWN && driveType != DRIVE_NO_ROOT_DIR)
+        {
+          nsAutoCString url;
+          url.AppendPrintf("file:///%c|/", volNum + 'A');
+          nsresult rv = mRDFService->GetResource(url, getter_AddRefs(vol));
+          if (NS_FAILED(rv))
+            return rv;
+
+          volumes.AppendObject(vol);
+        }
+    }
+#endif
+
+#ifdef XP_UNIX
+    mRDFService->GetResource(NS_LITERAL_CSTRING("file:///"), getter_AddRefs(vol));
+    volumes.AppendObject(vol);
+#endif
+
+    return NS_NewArrayEnumerator(aResult, volumes);
+}
+
+
+
+#ifdef  XP_WIN
+bool
+FileSystemDataSource::isValidFolder(nsIRDFResource *source)
+{
+    bool    isValid = true;
+    if (ieFavoritesDir.IsEmpty())    return(isValid);
+
+    nsresult        rv;
+    nsCString       uri;
+    rv = source->GetValueUTF8(uri);
+    if (NS_FAILED(rv)) return(isValid);
+
+    NS_ConvertUTF8toUTF16 theURI(uri);
+    if (theURI.Find(ieFavoritesDir) == 0)
+    {
+        isValid = false;
+
+        nsCOMPtr<nsISimpleEnumerator>   folderEnum;
+        if (NS_SUCCEEDED(rv = GetFolderList(source, true, false, getter_AddRefs(folderEnum))))
+        {
+            bool        hasAny = false, hasMore;
+            while (NS_SUCCEEDED(folderEnum->HasMoreElements(&hasMore)) &&
+                   hasMore)
+            {
+                hasAny = true;
+
+                nsCOMPtr<nsISupports>       isupports;
+                if (NS_FAILED(rv = folderEnum->GetNext(getter_AddRefs(isupports))))
+                    break;
+                nsCOMPtr<nsIRDFResource>    res = do_QueryInterface(isupports);
+                if (!res)   break;
+
+                nsCOMPtr<nsIRDFLiteral>     nameLiteral;
+                if (NS_FAILED(rv = GetName(res, getter_AddRefs(nameLiteral))))
+                    break;
+                
+                const char16_t         *uniName;
+                if (NS_FAILED(rv = nameLiteral->GetValueConst(&uniName)))
+                    break;
+                nsAutoString            name(uniName);
+
+                // An empty folder, or a folder that contains just "desktop.ini",
+                // is considered to be a IE Favorite; otherwise, its a folder
+                if (!name.LowerCaseEqualsLiteral("desktop.ini"))
+                {
+                    isValid = true;
+                    break;
+                }
+            }
+            if (!hasAny) isValid = true;
+        }
+    }
+    return(isValid);
+}
+#endif
+
+
+
+nsresult
+FileSystemDataSource::GetFolderList(nsIRDFResource *source, bool allowHidden,
+                bool onlyFirst, nsISimpleEnumerator** aResult)
+{
+    if (!isDirURI(source))
+        return(NS_RDF_NO_VALUE);
+
+    nsresult                    rv;
+
+    const char      *parentURI = nullptr;
+    rv = source->GetValueConst(&parentURI);
+    if (NS_FAILED(rv))
+        return(rv);
+    if (!parentURI)
+        return(NS_ERROR_UNEXPECTED);
+
+    nsCOMPtr<nsIURI>    aIURI;
+    if (NS_FAILED(rv = NS_NewURI(getter_AddRefs(aIURI), nsDependentCString(parentURI))))
+        return(rv);
+
+    nsCOMPtr<nsIFileURL>    fileURL = do_QueryInterface(aIURI);
+    if (!fileURL)
+        return NS_OK;
+
+    nsCOMPtr<nsIFile>   aDir;
+    if (NS_FAILED(rv = fileURL->GetFile(getter_AddRefs(aDir))))
+        return(rv);
+
+    // ensure that we DO NOT resolve aliases
+    aDir->SetFollowLinks(false);
+
+    nsCOMPtr<nsISimpleEnumerator>   dirContents;
+    if (NS_FAILED(rv = aDir->GetDirectoryEntries(getter_AddRefs(dirContents))))
+        return(rv);
+    if (!dirContents)
+        return(NS_ERROR_UNEXPECTED);
+
+    nsCOMArray<nsIRDFResource> resources;
+    bool            hasMore;
+    while(NS_SUCCEEDED(rv = dirContents->HasMoreElements(&hasMore)) &&
+          hasMore)
+    {
+        nsCOMPtr<nsISupports>   isupports;
+        if (NS_FAILED(rv = dirContents->GetNext(getter_AddRefs(isupports))))
+            break;
+
+        nsCOMPtr<nsIFile>   aFile = do_QueryInterface(isupports);
+        if (!aFile)
+            break;
+
+        if (!allowHidden)
+        {
+            bool            hiddenFlag = false;
+            if (NS_FAILED(rv = aFile->IsHidden(&hiddenFlag)))
+                break;
+            if (hiddenFlag)
+                continue;
+        }
+
+        nsAutoString leafStr;
+        if (NS_FAILED(rv = aFile->GetLeafName(leafStr)))
+            break;
+        if (leafStr.IsEmpty())
+            continue;
+  
+        nsAutoCString           fullURI;
+        fullURI.Assign(parentURI);
+        if (fullURI.Last() != '/')
+        {
+            fullURI.Append('/');
+        }
+
+        nsAutoCString leaf;
+        bool escaped = NS_Escape(NS_ConvertUTF16toUTF8(leafStr), leaf, url_Path);
+        leafStr.Truncate();
+
+        if (!escaped) {
+            continue;
+        }
+  
+        // using nsEscape() [above] doesn't escape slashes, so do that by hand
+        int32_t         aOffset;
+        while ((aOffset = leaf.FindChar('/')) >= 0)
+        {
+            leaf.Cut((uint32_t)aOffset, 1);
+            leaf.Insert("%2F", (uint32_t)aOffset);
+        }
+
+        // append the encoded name
+        fullURI.Append(leaf);
+
+        bool            dirFlag = false;
+        rv = aFile->IsDirectory(&dirFlag);
+        if (NS_SUCCEEDED(rv) && dirFlag)
+        {
+            fullURI.Append('/');
+        }
+
+        nsCOMPtr<nsIRDFResource>    fileRes;
+        mRDFService->GetResource(fullURI, getter_AddRefs(fileRes));
+
+        resources.AppendObject(fileRes);
+
+        if (onlyFirst)
+            break;
+    }
+
+    return NS_NewArrayEnumerator(aResult, resources);
+}
+
+nsresult
+FileSystemDataSource::GetLastMod(nsIRDFResource *source, nsIRDFDate **aResult)
+{
+    *aResult = nullptr;
+
+    nsresult        rv;
+    const char      *uri = nullptr;
+
+    rv = source->GetValueConst(&uri);
+    if (NS_FAILED(rv)) return(rv);
+    if (!uri)
+        return(NS_ERROR_UNEXPECTED);
+
+    nsCOMPtr<nsIURI>    aIURI;
+    if (NS_FAILED(rv = NS_NewURI(getter_AddRefs(aIURI), nsDependentCString(uri))))
+        return(rv);
+
+    nsCOMPtr<nsIFileURL>    fileURL = do_QueryInterface(aIURI);
+    if (!fileURL)
+        return NS_OK;
+
+    nsCOMPtr<nsIFile>   aFile;
+    if (NS_FAILED(rv = fileURL->GetFile(getter_AddRefs(aFile))))
+        return(rv);
+    if (!aFile)
+        return(NS_ERROR_UNEXPECTED);
+
+    // ensure that we DO NOT resolve aliases
+    aFile->SetFollowLinks(false);
+
+    PRTime lastModDate;
+    if (NS_FAILED(rv = aFile->GetLastModifiedTime(&lastModDate)))
+        return(rv);
+
+    // convert from milliseconds to seconds
+    mRDFService->GetDateLiteral(lastModDate * PR_MSEC_PER_SEC, aResult);
+
+    return(NS_OK);
+}
+
+
+
+nsresult
+FileSystemDataSource::GetFileSize(nsIRDFResource *source, nsIRDFInt **aResult)
+{
+    *aResult = nullptr;
+
+    nsresult        rv;
+    const char      *uri = nullptr;
+
+    rv = source->GetValueConst(&uri);
+    if (NS_FAILED(rv))
+        return(rv);
+    if (!uri)
+        return(NS_ERROR_UNEXPECTED);
+
+    nsCOMPtr<nsIURI>    aIURI;
+    if (NS_FAILED(rv = NS_NewURI(getter_AddRefs(aIURI), nsDependentCString(uri))))
+        return(rv);
+
+    nsCOMPtr<nsIFileURL>    fileURL = do_QueryInterface(aIURI);
+    if (!fileURL)
+        return NS_OK;
+
+    nsCOMPtr<nsIFile>   aFile;
+    if (NS_FAILED(rv = fileURL->GetFile(getter_AddRefs(aFile))))
+        return(rv);
+    if (!aFile)
+        return(NS_ERROR_UNEXPECTED);
+
+    // ensure that we DO NOT resolve aliases
+    aFile->SetFollowLinks(false);
+
+    // don't do anything with directories
+    bool    isDir = false;
+    if (NS_FAILED(rv = aFile->IsDirectory(&isDir)))
+        return(rv);
+    if (isDir)
+        return(NS_RDF_NO_VALUE);
+
+    int64_t     aFileSize64;
+    if (NS_FAILED(rv = aFile->GetFileSize(&aFileSize64)))
+        return(rv);
+
+    // convert 64bits to 32bits
+    int32_t aFileSize32 = int32_t(aFileSize64);
+    mRDFService->GetIntLiteral(aFileSize32, aResult);
+
+    return(NS_OK);
+}
+
+
+
+nsresult
+FileSystemDataSource::GetName(nsIRDFResource *source, nsIRDFLiteral **aResult)
+{
+    nsresult        rv;
+    const char      *uri = nullptr;
+
+    rv = source->GetValueConst(&uri);
+    if (NS_FAILED(rv))
+        return(rv);
+    if (!uri)
+        return(NS_ERROR_UNEXPECTED);
+
+    nsCOMPtr<nsIURI>    aIURI;
+    if (NS_FAILED(rv = NS_NewURI(getter_AddRefs(aIURI), nsDependentCString(uri))))
+        return(rv);
+
+    nsCOMPtr<nsIFileURL>    fileURL = do_QueryInterface(aIURI);
+    if (!fileURL)
+        return NS_OK;
+
+    nsCOMPtr<nsIFile>   aFile;
+    if (NS_FAILED(rv = fileURL->GetFile(getter_AddRefs(aFile))))
+        return(rv);
+    if (!aFile)
+        return(NS_ERROR_UNEXPECTED);
+
+    // ensure that we DO NOT resolve aliases
+    aFile->SetFollowLinks(false);
+
+    nsAutoString name;
+    if (NS_FAILED(rv = aFile->GetLeafName(name)))
+        return(rv);
+    if (name.IsEmpty())
+        return(NS_ERROR_UNEXPECTED);
+
+#ifdef  XP_WIN
+    // special hack for IE favorites under Windows; strip off the
+    // trailing ".url" or ".lnk" at the end of IE favorites names
+    int32_t nameLen = name.Length();
+    if ((strncmp(uri, ieFavoritesDir.get(), ieFavoritesDir.Length()) == 0) && (nameLen > 4))
+    {
+        nsAutoString extension;
+        name.Right(extension, 4);
+        if (extension.LowerCaseEqualsLiteral(".url") ||
+            extension.LowerCaseEqualsLiteral(".lnk"))
+        {
+            name.Truncate(nameLen - 4);
+        }
+    }
+#endif
+
+    mRDFService->GetLiteral(name.get(), aResult);
+
+    return NS_OK;
+}
+
+
+
+#ifdef USE_NC_EXTENSION
+nsresult
+FileSystemDataSource::GetExtension(nsIRDFResource *source, nsIRDFLiteral **aResult)
+{
+    nsCOMPtr<nsIRDFLiteral> name;
+    nsresult rv = GetName(source, getter_AddRefs(name));
+    if (NS_FAILED(rv))
+        return rv;
+
+    const char16_t* unicodeLeafName;
+    rv = name->GetValueConst(&unicodeLeafName);
+    if (NS_FAILED(rv))
+        return rv;
+
+    nsAutoString filename(unicodeLeafName);
+    int32_t lastDot = filename.RFindChar('.');
+    if (lastDot == -1)
+    {
+        mRDFService->GetLiteral(EmptyString().get(), aResult);
+    }
+    else
+    {
+        nsAutoString extension;
+        filename.Right(extension, (filename.Length() - lastDot));
+        mRDFService->GetLiteral(extension.get(), aResult);
+    }
+
+    return NS_OK;
+}
+#endif
+
+#ifdef  XP_WIN
+nsresult
+FileSystemDataSource::getIEFavoriteURL(nsIRDFResource *source, nsString aFileURL, nsIRDFLiteral **urlLiteral)
+{
+    nsresult        rv = NS_OK;
+    
+    *urlLiteral = nullptr;
+
+    nsCOMPtr<nsIFile> f;
+    NS_GetFileFromURLSpec(NS_ConvertUTF16toUTF8(aFileURL), getter_AddRefs(f)); 
+
+    bool value;
+
+    if (NS_SUCCEEDED(f->IsDirectory(&value)) && value)
+    {
+        if (isValidFolder(source))
+            return(NS_RDF_NO_VALUE);
+        aFileURL.AppendLiteral("desktop.ini");
+    }
+    else if (aFileURL.Length() > 4)
+    {
+        nsAutoString    extension;
+
+        aFileURL.Right(extension, 4);
+        if (!extension.LowerCaseEqualsLiteral(".url"))
+        {
+            return(NS_RDF_NO_VALUE);
+        }
+    }
+
+    nsCOMPtr<nsIInputStream> strm;
+    NS_NewLocalFileInputStream(getter_AddRefs(strm),f);
+    nsCOMPtr<nsILineInputStream> linereader = do_QueryInterface(strm, &rv);
+
+    nsAutoString    line;
+    nsAutoCString   cLine;
+    while(NS_SUCCEEDED(rv))
+    {
+        bool    isEOF;
+        rv = linereader->ReadLine(cLine, &isEOF);
+        CopyASCIItoUTF16(cLine, line);
+
+        if (isEOF)
+        {
+            if (line.Find("URL=", true) == 0)
+            {
+                line.Cut(0, 4);
+                rv = mRDFService->GetLiteral(line.get(), urlLiteral);
+                break;
+            }
+            else if (line.Find("CDFURL=", true) == 0)
+            {
+                line.Cut(0, 7);
+                rv = mRDFService->GetLiteral(line.get(), urlLiteral);
+                break;
+            }
+            line.Truncate();
+        }
+    }
+
+    return(rv);
+}
+#endif
+
+
+
+nsresult
+FileSystemDataSource::GetURL(nsIRDFResource *source, bool *isFavorite, nsIRDFLiteral** aResult)
+{
+    if (isFavorite) *isFavorite = false;
+
+    nsresult        rv;
+    nsCString       uri;
+	
+    rv = source->GetValueUTF8(uri);
+    if (NS_FAILED(rv))
+        return(rv);
+
+    NS_ConvertUTF8toUTF16 url(uri);
+
+#ifdef  XP_WIN
+    // under Windows, if its an IE favorite, munge the URL
+    if (!ieFavoritesDir.IsEmpty())
+    {
+        if (url.Find(ieFavoritesDir) == 0)
+        {
+            if (isFavorite) *isFavorite = true;
+            rv = getIEFavoriteURL(source, url, aResult);
+            return(rv);
+        }
+    }
+#endif
+
+    // if we fall through to here, its not any type of bookmark
+    // stored in the platform native file system, so just set the URL
+
+    mRDFService->GetLiteral(url.get(), aResult);
+
+    return(NS_OK);
+}