Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Shared / MS / Internal / MimeTypeMapper.cs / 2 / MimeTypeMapper.cs
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Security;
using System.Security.Permissions;
using System.Text;
#if PRESENTATION_CORE
using MS.Internal.PresentationCore; // for FriendAccessAllowed and BindUriHelper.UriToString
#else
#error Class is being used from an unknown assembly.
#endif
namespace MS.Internal
{
[FriendAccessAllowed]
internal static class MimeTypeMapper
{
static internal ContentType GetMimeTypeFromUri(Uri uriSource)
{
ContentType mimeType = ContentType.Empty;
if (uriSource != null)
{
Uri uri = uriSource;
if (uri.IsAbsoluteUri == false)
{
uri = new Uri("http://foo/bar/");
uri = new Uri(uri, uriSource);
}
string completeExt = GetFileExtension(uri);
lock (((ICollection)_fileExtensionToMimeType).SyncRoot)
{
// initialize for the first time
if (_fileExtensionToMimeType.Count == 0)
{
// Adding the known mime types to the hash table.
_fileExtensionToMimeType.Add(XamlExtension, XamlMime);
_fileExtensionToMimeType.Add(BamlExtension, BamlMime);
_fileExtensionToMimeType.Add(JpgExtension, JpgMime);
_fileExtensionToMimeType.Add(XbapExtension, XbapMime);
}
if (!_fileExtensionToMimeType.TryGetValue(completeExt, out mimeType))
{
//
// If the hashtable doesn't contain the MimeType for this extension,
// Call UrlMon API to get it, once UrlMon API returns a vallid MimeType,
// update it into the hashtable, so that the next time query for a Uri
// with the same extension will be faster.
//
mimeType = GetMimeTypeFromUrlMon(uriSource);
if (mimeType != ContentType.Empty)
{
_fileExtensionToMimeType.Add(completeExt, mimeType);
}
}
}
}
return mimeType;
}
//
// Call UrlMon API to get MimeType for a given extension.
//
///
/// SecurityCritical: uses UnsafeNativeMethods FindMimeFromData
/// SecurityTreatAsSafe:
/// The information returned is the mime-type associated with
/// the extension at the end of the Uri
/// Considered safe information to expose.
///
[SecurityCritical,SecurityTreatAsSafe]
static private ContentType GetMimeTypeFromUrlMon(Uri uriSource)
{
ContentType mimeType = ContentType.Empty;
if (uriSource != null)
{
int retValue;
string mimeTypeString;
retValue = MS.Win32.Compile.UnsafeNativeMethods.FindMimeFromData(null,
BindUriHelper.UriToString( uriSource ) ,
IntPtr.Zero,
0,
null,
0,
out mimeTypeString,
0);
// For PreSharp 56031,
// This return value must be checked as the function
// will not throw an exception on failure.
// the expected return value is S_OK.
if (retValue == 0 && mimeTypeString != null)
{
mimeType = new ContentType(mimeTypeString);
}
}
return mimeType;
}
static private string GetDocument(Uri uri)
{
string docstring;
if (uri.IsFile)
{
// LocalPath will un-escape characters, convert a file:///
// URI back into a local file system path. It will also
// drop any post-pended characters. (rogerch)
//
// "file:///c:/Program%20Files/foo.xmf#bar.jpg"
// becomes
// "C:\Program Files\foo.xmf"
docstring = uri.LocalPath;
}
else
{
// When not using the file scheme, escaped characters need
// to stay there and we rely on the Uri class to take care
// of figuring out what's going on.
docstring = uri.GetLeftPart(UriPartial.Path);
}
return docstring;
}
static internal string GetFileExtension(Uri uri)
{
string docString = GetDocument(uri);
string extensionWithDot = Path.GetExtension(docString);
string extension = String.Empty;
if (String.IsNullOrEmpty(extensionWithDot) == false)
{
extension = extensionWithDot.Substring(1).ToLower(CultureInfo.InvariantCulture);
}
return extension;
}
static internal bool IsHTMLMime(ContentType contentType)
{
return (HtmlMime.AreTypeAndSubTypeEqual(contentType)
|| HtmMime.AreTypeAndSubTypeEqual(contentType));
}
// The initial size of the hashtable mapps to the initial Known mimetypes.
// If more known mimetypes are added later, please change this number also
// for better perf.
private static readonly Dictionary _fileExtensionToMimeType = new Dictionary(4);
// Unspported MIME type
internal static readonly ContentType OctetMime = new ContentType("application/octet-stream");
internal static readonly ContentType TextPlainMime = new ContentType("text/plain");
// Known file extensions
internal const string XamlExtension = "xaml";
internal const string BamlExtension = "baml";
internal const string XbapExtension = "xbap";
internal const string JpgExtension = "jpg";
// Supported MIME types:
internal static readonly ContentType XamlMime = new ContentType("application/xaml+xml");
internal static readonly ContentType BamlMime = new ContentType("application/baml+xml");
internal static readonly ContentType JpgMime = new ContentType("image/jpg");
internal static readonly ContentType IconMime = new ContentType("image/x-icon");
internal static readonly ContentType FixedDocumentSequenceMime = new ContentType("application/vnd.ms-package.xps-fixeddocumentsequence+xml");
internal static readonly ContentType FixedDocumentMime = new ContentType("application/vnd.ms-package.xps-fixeddocument+xml");
internal static readonly ContentType FixedPageMime = new ContentType("application/vnd.ms-package.xps-fixedpage+xml");
internal static readonly ContentType ResourceDictionaryMime = new ContentType("application/vnd.ms-package.xps-resourcedictionary+xml");
internal static readonly ContentType HtmlMime = new ContentType("text/html");
internal static readonly ContentType HtmMime = new ContentType("text/htm");
internal static readonly ContentType XbapMime = new ContentType("application/x-ms-xbap");
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Security;
using System.Security.Permissions;
using System.Text;
#if PRESENTATION_CORE
using MS.Internal.PresentationCore; // for FriendAccessAllowed and BindUriHelper.UriToString
#else
#error Class is being used from an unknown assembly.
#endif
namespace MS.Internal
{
[FriendAccessAllowed]
internal static class MimeTypeMapper
{
static internal ContentType GetMimeTypeFromUri(Uri uriSource)
{
ContentType mimeType = ContentType.Empty;
if (uriSource != null)
{
Uri uri = uriSource;
if (uri.IsAbsoluteUri == false)
{
uri = new Uri("http://foo/bar/");
uri = new Uri(uri, uriSource);
}
string completeExt = GetFileExtension(uri);
lock (((ICollection)_fileExtensionToMimeType).SyncRoot)
{
// initialize for the first time
if (_fileExtensionToMimeType.Count == 0)
{
// Adding the known mime types to the hash table.
_fileExtensionToMimeType.Add(XamlExtension, XamlMime);
_fileExtensionToMimeType.Add(BamlExtension, BamlMime);
_fileExtensionToMimeType.Add(JpgExtension, JpgMime);
_fileExtensionToMimeType.Add(XbapExtension, XbapMime);
}
if (!_fileExtensionToMimeType.TryGetValue(completeExt, out mimeType))
{
//
// If the hashtable doesn't contain the MimeType for this extension,
// Call UrlMon API to get it, once UrlMon API returns a vallid MimeType,
// update it into the hashtable, so that the next time query for a Uri
// with the same extension will be faster.
//
mimeType = GetMimeTypeFromUrlMon(uriSource);
if (mimeType != ContentType.Empty)
{
_fileExtensionToMimeType.Add(completeExt, mimeType);
}
}
}
}
return mimeType;
}
//
// Call UrlMon API to get MimeType for a given extension.
//
///
/// SecurityCritical: uses UnsafeNativeMethods FindMimeFromData
/// SecurityTreatAsSafe:
/// The information returned is the mime-type associated with
/// the extension at the end of the Uri
/// Considered safe information to expose.
///
[SecurityCritical,SecurityTreatAsSafe]
static private ContentType GetMimeTypeFromUrlMon(Uri uriSource)
{
ContentType mimeType = ContentType.Empty;
if (uriSource != null)
{
int retValue;
string mimeTypeString;
retValue = MS.Win32.Compile.UnsafeNativeMethods.FindMimeFromData(null,
BindUriHelper.UriToString( uriSource ) ,
IntPtr.Zero,
0,
null,
0,
out mimeTypeString,
0);
// For PreSharp 56031,
// This return value must be checked as the function
// will not throw an exception on failure.
// the expected return value is S_OK.
if (retValue == 0 && mimeTypeString != null)
{
mimeType = new ContentType(mimeTypeString);
}
}
return mimeType;
}
static private string GetDocument(Uri uri)
{
string docstring;
if (uri.IsFile)
{
// LocalPath will un-escape characters, convert a file:///
// URI back into a local file system path. It will also
// drop any post-pended characters. (rogerch)
//
// "file:///c:/Program%20Files/foo.xmf#bar.jpg"
// becomes
// "C:\Program Files\foo.xmf"
docstring = uri.LocalPath;
}
else
{
// When not using the file scheme, escaped characters need
// to stay there and we rely on the Uri class to take care
// of figuring out what's going on.
docstring = uri.GetLeftPart(UriPartial.Path);
}
return docstring;
}
static internal string GetFileExtension(Uri uri)
{
string docString = GetDocument(uri);
string extensionWithDot = Path.GetExtension(docString);
string extension = String.Empty;
if (String.IsNullOrEmpty(extensionWithDot) == false)
{
extension = extensionWithDot.Substring(1).ToLower(CultureInfo.InvariantCulture);
}
return extension;
}
static internal bool IsHTMLMime(ContentType contentType)
{
return (HtmlMime.AreTypeAndSubTypeEqual(contentType)
|| HtmMime.AreTypeAndSubTypeEqual(contentType));
}
// The initial size of the hashtable mapps to the initial Known mimetypes.
// If more known mimetypes are added later, please change this number also
// for better perf.
private static readonly Dictionary _fileExtensionToMimeType = new Dictionary(4);
// Unspported MIME type
internal static readonly ContentType OctetMime = new ContentType("application/octet-stream");
internal static readonly ContentType TextPlainMime = new ContentType("text/plain");
// Known file extensions
internal const string XamlExtension = "xaml";
internal const string BamlExtension = "baml";
internal const string XbapExtension = "xbap";
internal const string JpgExtension = "jpg";
// Supported MIME types:
internal static readonly ContentType XamlMime = new ContentType("application/xaml+xml");
internal static readonly ContentType BamlMime = new ContentType("application/baml+xml");
internal static readonly ContentType JpgMime = new ContentType("image/jpg");
internal static readonly ContentType IconMime = new ContentType("image/x-icon");
internal static readonly ContentType FixedDocumentSequenceMime = new ContentType("application/vnd.ms-package.xps-fixeddocumentsequence+xml");
internal static readonly ContentType FixedDocumentMime = new ContentType("application/vnd.ms-package.xps-fixeddocument+xml");
internal static readonly ContentType FixedPageMime = new ContentType("application/vnd.ms-package.xps-fixedpage+xml");
internal static readonly ContentType ResourceDictionaryMime = new ContentType("application/vnd.ms-package.xps-resourcedictionary+xml");
internal static readonly ContentType HtmlMime = new ContentType("text/html");
internal static readonly ContentType HtmMime = new ContentType("text/htm");
internal static readonly ContentType XbapMime = new ContentType("application/x-ms-xbap");
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SqlUtils.cs
- ComponentConverter.cs
- EditorPartChrome.cs
- EFAssociationProvider.cs
- RoutedEvent.cs
- PreloadedPackages.cs
- XpsFixedDocumentReaderWriter.cs
- ExpressionWriter.cs
- NamespaceDecl.cs
- VarRefManager.cs
- Pkcs7Recipient.cs
- PropertyKey.cs
- Propagator.JoinPropagator.cs
- SeverityFilter.cs
- HuffCodec.cs
- HandlerMappingMemo.cs
- WsdlBuildProvider.cs
- WebBaseEventKeyComparer.cs
- DbConnectionPoolGroup.cs
- odbcmetadatacollectionnames.cs
- RowBinding.cs
- TagMapInfo.cs
- SqlConnectionHelper.cs
- LockCookie.cs
- ServiceBusyException.cs
- DiscoveryVersionConverter.cs
- LinearKeyFrames.cs
- TailPinnedEventArgs.cs
- FixedNode.cs
- NamespaceQuery.cs
- QueryStringParameter.cs
- ArglessEventHandlerProxy.cs
- CultureSpecificCharacterBufferRange.cs
- Permission.cs
- TableChangeProcessor.cs
- MenuItemBinding.cs
- Ops.cs
- BorderGapMaskConverter.cs
- OdbcCommand.cs
- ObjectKeyFrameCollection.cs
- ExpressionBuilderCollection.cs
- IERequestCache.cs
- Rijndael.cs
- DigitalSignature.cs
- Accessors.cs
- SpinWait.cs
- ExpandedWrapper.cs
- DrawingCollection.cs
- TagPrefixInfo.cs
- Attribute.cs
- AsymmetricSignatureDeformatter.cs
- WhitespaceRuleReader.cs
- MultiTargetingUtil.cs
- DataGridViewSelectedColumnCollection.cs
- TransformationRules.cs
- FieldBuilder.cs
- DocumentOrderQuery.cs
- TextEffectCollection.cs
- Predicate.cs
- PerfCounters.cs
- TreeNodeCollection.cs
- Menu.cs
- BasicCommandTreeVisitor.cs
- MonthChangedEventArgs.cs
- ScriptControl.cs
- DiagnosticTraceSource.cs
- WebAdminConfigurationHelper.cs
- FragmentQuery.cs
- LayoutSettings.cs
- XmlDictionary.cs
- UIHelper.cs
- CharacterMetrics.cs
- _NativeSSPI.cs
- TransformCollection.cs
- CodeDirectoryCompiler.cs
- SiteMapNodeItemEventArgs.cs
- RestHandler.cs
- IImplicitResourceProvider.cs
- StylusOverProperty.cs
- XmlEventCache.cs
- AutomationAttributeInfo.cs
- StreamGeometry.cs
- MachineKeySection.cs
- XPathDocumentIterator.cs
- InvalidAsynchronousStateException.cs
- XPathNodeIterator.cs
- TimeSpan.cs
- TreeNodeCollectionEditorDialog.cs
- Stack.cs
- MetadataUtil.cs
- CredentialCache.cs
- AnchoredBlock.cs
- CodeCastExpression.cs
- ReadOnlyDictionary.cs
- IndicFontClient.cs
- WebResourceUtil.cs
- altserialization.cs
- SessionSymmetricTransportSecurityProtocolFactory.cs
- precedingquery.cs
- MobileUserControlDesigner.cs