/// <summary>
/// Compares objects that implement the <see cref="IAtomCommonObjectAttributes"/> interface.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to be compared.</param>
/// <param name="target">A object that implements the <see cref="IAtomCommonObjectAttributes"/> to compare with the <paramref name="source"/>.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
public static int CompareCommonObjectAttributes(IAtomCommonObjectAttributes source, IAtomCommonObjectAttributes target)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
int result = 0;
//------------------------------------------------------------
// Handle parameter null reference cases
//------------------------------------------------------------
if (source == null && target == null)
{
return(0);
}
else if (source != null && target == null)
{
return(1);
}
else if (source == null && target != null)
{
return(-1);
}
//------------------------------------------------------------
// Attempt to perform comparison
//------------------------------------------------------------
result = result | Uri.Compare(source.BaseUri, target.BaseUri, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
string sourceLanguageName = source.Language != null ? source.Language.Name : String.Empty;
string targetLanguageName = target.Language != null ? target.Language.Name : String.Empty;
result = result | String.Compare(sourceLanguageName, targetLanguageName, StringComparison.OrdinalIgnoreCase);
return(result);
}
/// <summary>
/// Compares objects that implement the <see cref="IAtomCommonObjectAttributes"/> interface.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to be compared.</param>
/// <param name="target">A object that implements the <see cref="IAtomCommonObjectAttributes"/> to compare with the <paramref name="source"/>.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
public static int CompareCommonObjectAttributes(IAtomCommonObjectAttributes source, IAtomCommonObjectAttributes target)
{
int result = 0;
if (source == null && target == null)
{
return(0);
}
else if (source != null && target == null)
{
return(1);
}
else if (source == null && target != null)
{
return(-1);
}
result = result | Uri.Compare(source.BaseUri, target.BaseUri, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
string sourceLanguageName = source.Language != null ? source.Language.Name : String.Empty;
string targetLanguageName = target.Language != null ? target.Language.Name : String.Empty;
result = result | String.Compare(sourceLanguageName, targetLanguageName, StringComparison.OrdinalIgnoreCase);
return(result);
}
/// <summary>
/// Modifies the <see cref="IAtomCommonObjectAttributes"/> to match the data source.
/// </summary>
/// <param name="target">The object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to be filled.</param>
/// <param name="source">The <see cref="XPathNavigator"/> to extract Atom common attribute information from.</param>
/// <returns><b>true</b> if the <paramref name="target"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="target"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public static bool FillCommonObjectAttributes(IAtomCommonObjectAttributes target, XPathNavigator source)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(target, "target");
Guard.ArgumentNotNull(source, "source");
//------------------------------------------------------------
// Initialize XML namespace resolver
//------------------------------------------------------------
XmlNamespaceManager manager = AtomUtility.CreateNamespaceManager(source.NameTable);
//------------------------------------------------------------
// Attempt to extract xml:base attribute information
//------------------------------------------------------------
string xmlBaseAttribute = source.GetAttribute("base", manager.LookupNamespace("xml"));
if (!String.IsNullOrEmpty(xmlBaseAttribute))
{
Uri baseUri;
if (Uri.TryCreate(xmlBaseAttribute, UriKind.RelativeOrAbsolute, out baseUri))
{
target.BaseUri = baseUri;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Attempt to extract xml:lang attribute information
//------------------------------------------------------------
string xmlLangAttribute = source.GetAttribute("lang", manager.LookupNamespace("xml"));
if (!String.IsNullOrEmpty(xmlLangAttribute))
{
try
{
CultureInfo language = new CultureInfo(source.XmlLang);
target.Language = language;
wasLoaded = true;
}
catch (ArgumentException)
{
System.Diagnostics.Trace.TraceWarning("Unable to determine CultureInfo with a name of {0}.", source.XmlLang);
}
}
return(wasLoaded);
}
/// <summary>
/// Saves the current <see cref="IAtomCommonObjectAttributes"/> to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to extract Atom common attribute information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectAttributes(IAtomCommonObjectAttributes source, XmlWriter writer)
{
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
if (source.BaseUri != null)
{
writer.WriteAttributeString("xml", "base", XML_NAMESPACE, source.BaseUri.ToString());
}
if (source.Language != null)
{
writer.WriteAttributeString("xml", "lang", XML_NAMESPACE, source.Language.Name);
}
}
/// <summary>
/// Saves the current <see cref="IAtomCommonObjectAttributes"/> to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to extract Atom common attribute information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectAttributes(IAtomCommonObjectAttributes source, XmlWriter writer)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
//------------------------------------------------------------
// Write xml:base attribute if necessary
//------------------------------------------------------------
if (source.BaseUri != null)
{
writer.WriteAttributeString("xml", "base", XML_NAMESPACE, source.BaseUri.ToString());
}
//------------------------------------------------------------
// Write xml:lang attribute if necessary
//------------------------------------------------------------
if (source.Language != null)
{
writer.WriteAttributeString("xml", "lang", XML_NAMESPACE, source.Language.Name);
}
}
/// <summary>
/// Compares objects that implement the <see cref="IAtomCommonObjectAttributes"/> interface.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to be compared.</param>
/// <param name="target">A object that implements the <see cref="IAtomCommonObjectAttributes"/> to compare with the <paramref name="source"/>.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
public static int CompareCommonObjectAttributes(IAtomCommonObjectAttributes source, IAtomCommonObjectAttributes target)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
int result = 0;
//------------------------------------------------------------
// Handle parameter null reference cases
//------------------------------------------------------------
if (source == null && target == null)
{
return 0;
}
else if (source != null && target == null)
{
return 1;
}
else if (source == null && target != null)
{
return -1;
}
//------------------------------------------------------------
// Attempt to perform comparison
//------------------------------------------------------------
result = result | Uri.Compare(source.BaseUri, target.BaseUri, UriComponents.AbsoluteUri, UriFormat.SafeUnescaped, StringComparison.OrdinalIgnoreCase);
string sourceLanguageName = source.Language != null ? source.Language.Name : String.Empty;
string targetLanguageName = target.Language != null ? target.Language.Name : String.Empty;
result = result | String.Compare(sourceLanguageName, targetLanguageName, StringComparison.OrdinalIgnoreCase);
return result;
}
/// <summary>
/// Saves the current <see cref="IAtomCommonObjectAttributes"/> to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to extract Atom common attribute information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectAttributes(IAtomCommonObjectAttributes source, XmlWriter writer)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
//------------------------------------------------------------
// Write xml:base attribute if necessary
//------------------------------------------------------------
if (source.BaseUri != null)
{
writer.WriteAttributeString("xml", "base", XML_NAMESPACE, source.BaseUri.ToString());
}
//------------------------------------------------------------
// Write xml:lang attribute if necessary
//------------------------------------------------------------
if (source.Language != null)
{
writer.WriteAttributeString("xml", "lang", XML_NAMESPACE, source.Language.Name);
}
}
/// <summary>
/// Modifies the <see cref="IAtomCommonObjectAttributes"/> to match the data source.
/// </summary>
/// <param name="target">The object that implements the <see cref="IAtomCommonObjectAttributes"/> interface to be filled.</param>
/// <param name="source">The <see cref="XPathNavigator"/> to extract Atom common attribute information from.</param>
/// <returns><b>true</b> if the <paramref name="target"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="target"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public static bool FillCommonObjectAttributes(IAtomCommonObjectAttributes target, XPathNavigator source)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(target, "target");
Guard.ArgumentNotNull(source, "source");
//------------------------------------------------------------
// Initialize XML namespace resolver
//------------------------------------------------------------
XmlNamespaceManager manager = AtomUtility.CreateNamespaceManager(source.NameTable);
//------------------------------------------------------------
// Attempt to extract xml:base attribute information
//------------------------------------------------------------
string xmlBaseAttribute = source.GetAttribute("base", manager.LookupNamespace("xml"));
if (!String.IsNullOrEmpty(xmlBaseAttribute))
{
Uri baseUri;
if (Uri.TryCreate(xmlBaseAttribute, UriKind.RelativeOrAbsolute, out baseUri))
{
target.BaseUri = baseUri;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Attempt to extract xml:lang attribute information
//------------------------------------------------------------
string xmlLangAttribute = source.GetAttribute("lang", manager.LookupNamespace("xml"));
if (!String.IsNullOrEmpty(xmlLangAttribute))
{
try
{
CultureInfo language = new CultureInfo(source.XmlLang);
target.Language = language;
wasLoaded = true;
}
catch (ArgumentException)
{
System.Diagnostics.Trace.TraceWarning("Unable to determine CultureInfo with a name of {0}.", source.XmlLang);
}
}
return wasLoaded;
}