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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) 2008 Novell, Inc. (http://www.novell.com)
//
// Authors:
// Alan McGovern (amcgovern@novell.com)
//
using System;
namespace System.IO.Packaging
{
internal static class Check
{
static void NotNull (object o, string name)
{
if (o == null)
throw new ArgumentNullException (name);
}
public static void ContentTypeIsValid (string contentType)
{
if (string.IsNullOrEmpty (contentType))
return;
// Must be in form of: type/subtype
int index = contentType.IndexOf ('/');
bool result = (index > 0) && contentType.Length > (index + 1) && contentType.IndexOf ('/', index + 1) == -1;
if(!result)
throw new ArgumentException ("contentType", "contentType must be in the form of 'type/subtype'");
}
public static void Id (object id)
{
NotNull (id, "id");
}
public static void IdIsValid (string id)
{
if (id == null)
return;
// If the ID is a zero string, need to throw a ArgNullEx
if (id.Length == 0)
throw new ArgumentNullException ("id", "Cannot be whitespace or empty");
// FIXME: I need to XSD parse this to make sure it's valid
// If it's not, throw an XmlException
}
private static bool EmptyOrBlank (string s)
{
return (s != null && (s == "" || s.Trim ().Length == 0));
}
private static void PartUriDoesntEndWithSlash(Uri uri)
{
var s = !uri.IsAbsoluteUri ? uri.OriginalString
: uri.GetComponents(UriComponents.Path, UriFormat.UriEscaped);
// We allow '/' at uri's beggining.
if ((s.Length > 1) && s.EndsWith("/"))
{
throw new ArgumentException("Part URI cannot end with a forward slash.");
}
}
public static void Package(object package)
{
if (package == null)
throw new ArgumentNullException ("package");
}
public static void PackageUri (object packageUri)
{
NotNull (packageUri, "packageUri");
}
public static void PackageUriIsValid (Uri packageUri)
{
if (!packageUri.IsAbsoluteUri)
throw new ArgumentException ("packageUri", "Uri must be absolute");
}
public static void PackUriIsValid (Uri packUri)
{
if (!packUri.IsAbsoluteUri)
throw new ArgumentException("packUri", "PackUris must be absolute");
if (packUri.Scheme != PackUriHelper.UriSchemePack)
throw new ArgumentException ("packUri", "Uri scheme is not a valid PackUri scheme");
}
public static void PartUri (object partUri)
{
if (partUri == null)
throw new ArgumentNullException ("partUri");
}
public static void PartUriIsValid (Uri partUri)
{
if (!partUri.OriginalString.StartsWith ("/"))
throw new ArgumentException ("PartUris must start with '/'");
if (partUri.IsAbsoluteUri)
throw new ArgumentException ("PartUris cannot be absolute");
}
public static void RelationshipTypeIsValid (string relationshipType)
{
if (relationshipType == null)
throw new ArgumentNullException ("relationshipType");
if (EmptyOrBlank (relationshipType))
throw new ArgumentException ("relationshipType", "Cannot be whitespace or empty");
}
public static void PartUri (Uri partUri)
{
if (partUri == null)
throw new ArgumentNullException ("partUri");
if (partUri.IsAbsoluteUri)
throw new ArgumentException ("partUri", "Absolute URIs are not supported");
if (string.IsNullOrEmpty (partUri.OriginalString))
throw new ArgumentException ("partUri", "Part uri cannot be an empty string");
}
public static void PackUri(Uri packUri)
{
NotNull(packUri, "packUri");
}
public static void SourcePartUri (Uri sourcePartUri)
{
NotNull(sourcePartUri, "sourcePartUri");
PartUriDoesntEndWithSlash(sourcePartUri);
}
public static void TargetPartUri (Uri targetPartUri)
{
NotNull(targetPartUri, "targetPartUri");
PartUriDoesntEndWithSlash(targetPartUri);
}
public static void SourceUri (Uri sourceUri)
{
if (sourceUri == null)
throw new ArgumentNullException ("sourceUri");
// if (sourceUri.IsAbsoluteUri)
// throw new ArgumentException ("sourceUri", "Absolute URIs are not supported");
if (string.IsNullOrEmpty (sourceUri.OriginalString))
throw new ArgumentException ("sourceUri", "Part uri cannot be an empty string");
}
public static void TargetUri (Uri targetUri)
{
if (targetUri == null)
throw new ArgumentNullException ("targetUri");
// if (targetUri.IsAbsoluteUri)
// throw new ArgumentException ("targetUri", "Absolute URIs are not supported");
if (string.IsNullOrEmpty (targetUri.OriginalString))
throw new ArgumentException ("targetUri", "Part uri cannot be an empty string");
}
}
}
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