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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
//
// Authors:
// Chris Toshok (toshok@ximian.com)
//
using System;
namespace System.IO.Packaging {
public static class PackUriHelper
{
public static readonly string UriSchemePack = "pack";
static readonly Uri PackSchemeUri = new Uri("pack://", UriKind.Absolute);
static readonly char[] _escapedChars = new char[] { '%', ',', '?', '@' };
static PackUriHelper ()
{
if (!UriParser.IsKnownScheme (UriSchemePack))
UriParser.Register (new PackUriParser (), UriSchemePack, -1);
}
public static int ComparePackUri (Uri firstPackUri, Uri secondPackUri)
{
if (firstPackUri == null)
return secondPackUri == null ? 0 : -1;
if (secondPackUri == null)
return 1;
Check.PackUriIsValid (firstPackUri);
Check.PackUriIsValid (secondPackUri);
// FIXME: What exactly is compared. Lets assume originalstring
return firstPackUri.OriginalString.CompareTo (secondPackUri.OriginalString);
}
public static int ComparePartUri (Uri firstPartUri, Uri secondPartUri)
{
if (firstPartUri == null)
return secondPartUri == null ? 0 : -1;
if (secondPartUri == null)
return 1;
Check.PartUriIsValid (firstPartUri);
Check.PartUriIsValid (secondPartUri);
return firstPartUri.OriginalString.CompareTo (secondPartUri.OriginalString);
}
public static Uri Create (Uri packageUri)
{
return Create (packageUri, null, null);
}
public static Uri Create (Uri packageUri, Uri partUri)
{
return Create (packageUri, partUri, null);
}
public static Uri Create (Uri packageUri, Uri partUri, string fragment)
{
Check.PackageUri (packageUri);
Check.PackageUriIsValid (packageUri);
if (partUri != null)
Check.PartUriIsValid (partUri);
if (fragment != null && (fragment.Length == 0 || fragment[0] != '#'))
throw new ArgumentException ("Fragment", "Fragment must not be empty and must start with '#'");
// FIXME: Validate that partUri is a valid one? Must be relative, must start with '/'
// First replace the slashes, then escape the special characters
//string orig = packageUri.GetComponents(UriComponents.AbsoluteUri, UriFormat.UriEscaped);
string orig = packageUri.OriginalString;
foreach (var ch in _escapedChars)
{
orig = !orig.Contains(ch.ToString()) ? orig : orig.Replace(ch.ToString(), Uri.HexEscape(ch));
}
orig = orig.Replace('/', ',');
if (partUri != null)
orig += partUri.OriginalString;
if ((fragment == null && partUri == null)&& orig[orig.Length - 1] != '/')
orig += '/';
if (fragment != null)
orig += fragment;
return new Uri ("pack://" + orig);
}
public static Uri CreatePartUri (Uri partUri)
{
Check.PartUri (partUri);
if (partUri.OriginalString[0] != '/')
partUri = new Uri("/" + partUri.ToString (), UriKind.Relative);
return partUri;
}
public static Uri GetNormalizedPartUri (Uri partUri)
{
Check.PartUri (partUri);
return new Uri (partUri.ToString ().ToUpperInvariant (), UriKind.Relative);
}
public static Uri GetPackageUri (Uri packUri)
{
Check.PackUri (packUri);
Check.PackUriIsValid (packUri);
string s = packUri.Host.Replace(',', '/');
return new Uri (Uri.UnescapeDataString(s), UriKind.RelativeOrAbsolute);
}
public static Uri GetPartUri (Uri packUri)
{
Check.PackUri(packUri);
Check.PackUriIsValid(packUri);
if (string.IsNullOrEmpty(packUri.AbsolutePath) || packUri.AbsolutePath == "/")
return null;
return new Uri(packUri.AbsolutePath, UriKind.Relative);
}
public static Uri GetRelationshipPartUri (Uri partUri)
{
Check.PartUri (partUri);
Check.PartUriIsValid (partUri);
int index = partUri.OriginalString.LastIndexOf ("/");
string s = partUri.OriginalString.Substring (0, index);
s += "/_rels" + partUri.OriginalString.Substring (index) + ".rels";
return new Uri (s, UriKind.Relative);
}
public static Uri GetRelativeUri (Uri sourcePartUri, Uri targetPartUri)
{
Check.SourcePartUri (sourcePartUri);
Check.TargetPartUri (targetPartUri);
Uri uri = new Uri ("http://fake.com");
Uri a = new Uri (uri, sourcePartUri.OriginalString);
Uri b = new Uri (uri, targetPartUri.OriginalString);
return a.MakeRelativeUri(b);
}
public static Uri GetSourcePartUriFromRelationshipPartUri (Uri relationshipPartUri)
{
//Check.RelationshipPartUri (relationshipPartUri);
if (!IsRelationshipPartUri (relationshipPartUri))
throw new Exception ("is not a relationship part!?");
return null;
}
public static bool IsRelationshipPartUri (Uri partUri)
{
Check.PartUri (partUri);
return partUri.OriginalString.StartsWith ("/_rels") && partUri.OriginalString.EndsWith (".rels");
}
public static Uri ResolvePartUri (Uri sourcePartUri, Uri targetUri)
{
Check.SourcePartUri (sourcePartUri);
Check.TargetUri (targetUri);
Check.PartUriIsValid (sourcePartUri);
if (targetUri.IsAbsoluteUri)
throw new ArgumentException ("targetUri", "Absolute URIs are not supported");
Uri uri = new Uri ("http://fake.com");
uri = new Uri (uri, sourcePartUri);
uri = new Uri (uri, targetUri);
// Trim out 'http://fake.com'
return new Uri (uri.OriginalString.Substring (15), UriKind.Relative);
}
}
}
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