/// <summary>
/// Retrieves an asset from the provider. If the second parameter
/// is true and the asset cannot be found, an AssetException is
/// thrown. Otherwise, this function will return null if it cannot
/// be found.
/// </summary>
public IAsset GetAsset(NodeRef path, bool exceptionIfMissing)
{
// Go through the assets
foreach (IAssetProvider provider in providers)
{
try
{
// We always throw an exception to handle the processing
return provider.GetAsset(path, true);
}
catch {}
}
// If we get this far, every asset threw an exception trying to
// get the asset path.
if (exceptionIfMissing)
{
throw new AssetException("Cannot find " +
path + " in " + providers.Count
+ " providers");
}
else
{
return null;
}
}
/// <summary>
/// Constructs an asset from the given assembly. If the resource
/// does not exist, this throws an AssetException.
/// </summary>
public AssemblyAsset(AssemblyAssetProvider provider, NodeRef path)
{
// Save the fields
this.provider = provider;
this.path = path.ToString();
if (provider.StripLeadingSlash)
this.path = this.path.Substring(1);
// Make sure it exists
bool found = false;
foreach (string name in provider.Assembly.GetManifestResourceNames())
{
if (name == this.path)
{
found = true;
break;
}
}
if (!found)
throw new AssetException("Cannot find resource '"
+ path + "' from assembly '"
+ provider.Assembly.FullName
+ "'");
}
/// <summary>
/// Creates an empty AttributeTree object.
/// </summary>
public AttributeTree()
{
// Set our path
path = new NodeRef("/");
// Create our children
children = new AttributeTreeCollection(this);
}
public void DoubleDot()
{
NodeRef nr = new NodeRef("/a/b/../c");
Assert.AreEqual("/a/c", nr.Path);
}
public void Count2()
{
NodeRef nr = new NodeRef("/a");
Assert.AreEqual(1, nr.Count);
}
public void ChildIndex()
{
NodeRef up = new NodeRef("/dir1/sub1");
NodeRef c1 = up["sub2/sub3"];
Assert.AreEqual("/dir1/sub1/sub2/sub3", c1.Path);
}
public void TestNodeCreateChild()
{
NodeRef up = new NodeRef("/dir1/sub1");
NodeRef c1 = up.CreateChild("sub2");
Assert.AreEqual("/dir1/sub1/sub2", c1.Path);
}
public void TestEscapedNone()
{
NodeRef nr = new NodeRef("/a/b/c");
Assert.AreEqual("/a/b/c", nr.ToString(),
"String comparison");
}
public void SubRef4()
{
NodeRef nr = new NodeRef("/this/is/a/path");
NodeRef sr = new NodeRef("/not/a/path");
Assert.AreEqual("/not/a/path", nr.GetSubRef(sr).Path);
}
public void Includes4()
{
NodeRef nr = new NodeRef("/this/is");
NodeRef sr = new NodeRef("/this");
Assert.AreEqual(false, nr.Includes(sr));
}
public void Includes2()
{
NodeRef nr = new NodeRef("/this/is");
NodeRef sr = new NodeRef("/not/in/is/a/path");
Assert.AreEqual(false, nr.Includes(sr));
}
public void Includes1()
{
NodeRef nr = new NodeRef("/this/is");
NodeRef sr = new NodeRef("/this/is/a/path");
Assert.AreEqual(true, nr.Includes(sr));
}
/// <summary>
/// This parses the given path and builds up the internal
/// representation into memory. This representation is used
/// for path and additional processing.
/// </summary>
private void ParsePath(string path, NodeRef context)
{
// Perform some sanity checking on the path
if (path == null)
throw new InvalidPathException("Cannot create a node "
+ "ref from a null");
// Check for absolute path
if (!path.StartsWith("/"))
{
// We don't have an absolute path, so check the context
if (context == null)
{
throw new NotAbsolutePathException("Cannot create "
+ "absolute path from '"
+ path
+ "'");
}
// Construct the new path from this context
path = context.Path + "/" + path;
}
// Save the original
//string orig = path;
// Start by escaping the escapes
path = path.Replace("\\", "\\\\");
// Normalize the path by adding a trailing "/" and reducing
// double "//" into single ones. This is done with regexes to
// make it easier and faster. We add the "/" to simplify our
// regexes later; we will also remove it as the last bit.
path += "/";
path = findDoubleSlashRegex.Replace(path, "/");
//Debug("Processing 1: {0}", path);
// Normalize the invalid characters
//Debug("Processing 2: {0}", path);
// Normalize the "/./" and the "/../" references. Also remove
// the "/../" stuff at the beginning, by just deleting it.
path = findHereRegex.Replace(path, "/");
path = findRefUpRegex.Replace(path, "/");
path = findInvalidUpRegex.Replace(path, "/");
//Debug("Processing: {0} => {1}", orig, path);
// Finally, remove the leading and trailing slash that we put in.
//Debug("Processing 1: {0} => {1}", orig, path);
path = findTrailingSlashesRegex.Replace(path, "");
path = findLeadingSlashesRegex.Replace(path, "").Trim();
//Debug("Processing 2: {0} => {1}", orig, path);
// We need to do is make sure the regex characters are not
// allowed in the string. We do this by just replacing all
// the important ones with escaped versions.
regexable = "/" + path
.Replace("+", "\\+")
.Replace("(", "\\(")
.Replace(")", "\\)")
.Replace("[", "\\[")
.Replace("]", "\\]")
.Replace(".", "\\.")
.Replace("*", "\\*")
.Replace("?", "\\?");
//Debug("Processing 3: {0}", path);
// We now have a normalized path, without a leading or a
// trailing slash. If this is a blank string (one with no
// length), it means that the reference was "/". Otherwise, it
// represents some sort of path that had at least one
// element. We also save the entire string version because we
// are both read-only and we make the assumption that memory can
// handle it.
if (path.Equals(""))
{
// This is an empty path, which means it was a "/" reference
parts = new string [] {};
pref = "/";
}
else
{
// Split it along the slash characters
parts = path.Split('/');
pref = "/" + path;
}
}
/// <summary>
/// Returns true if this path includes the given path. This means
/// that given path is under or part of this node's path.
/// </summary>
public bool Includes(NodeRef path)
{
// We have a real easy way of finding this
return Regex.IsMatch(path.ToString(), "^" + regexable);
}
/// <summary>
/// Returns a NodeRef which has this node's path removed from the
/// beginning. If the given reference is not included (as per the
/// Includes), it will be returned completely.
/// </summary>
public NodeRef GetSubRef(NodeRef nodeRef)
{
// Check for includes
if (!Includes(nodeRef))
return nodeRef;
// Remove the first part. There is an easy method because we are
// so strict about paths. We use the root context in the case
// where the leading / is removed.
string path =
Regex.Replace(nodeRef.Path, "^" + regexable, "");
return new NodeRef(path, RootContext);
}
public void SubPluses()
{
NodeRef nr = new NodeRef("/Test +1/A");
NodeRef nr2 = new NodeRef("/Test +1");
NodeRef nr3 = nr2.GetSubRef(nr);
Assert.AreEqual("/A", nr3.ToString());
}
public void SubRef2()
{
NodeRef nr = new NodeRef("/this/is");
NodeRef sr = new NodeRef("/this/is");
Assert.AreEqual("/", nr.GetSubRef(sr).Path);
}
public void InvalidDoubleDot2()
{
NodeRef nr = new NodeRef("/../..");
Assert.AreEqual("/", nr.Path);
}
public void TestDoubleStarMatch()
{
NodeRef nr = new NodeRef("/a/b/c");
Assert.IsTrue(nr.IsMatch("/**/c"));
}
public void LeadingDotSlash()
{
NodeRef context = new NodeRef("/");
NodeRef nr = new NodeRef("./", context);
Assert.AreEqual("/", nr.Path);
}
public void TestEscapedStar()
{
NodeRef nr = new NodeRef("/*/*/*");
Assert.AreEqual("/*/*/*", nr.ToString(),
"String comparison");
Assert.IsTrue(nr.Includes(new NodeRef("/*/*/*/abb")),
"nr.Includes");
}
public void Name()
{
NodeRef nr = new NodeRef("/a/b/c");
Assert.AreEqual("c", nr.Name);
}
public void TestSingleStarMatch3()
{
NodeRef nr = new NodeRef("/a/b/c");
Assert.IsFalse(nr.IsMatch("/*/*/*/c"));
}
public void ParentPath()
{
NodeRef up = new NodeRef("/dir1/sub1");
string up1 = up.ParentPath;
Assert.AreEqual("/dir1", up1);
}
public void Count1()
{
NodeRef nr = new NodeRef("/a/b/c");
Assert.AreEqual(3, nr.Count);
}
public void ParentRef()
{
NodeRef up = new NodeRef("/dir1/sub1");
NodeRef up1 = up.ParentRef;
Assert.AreEqual("/dir1", up1.Path);
}
public void Count3()
{
NodeRef nr = new NodeRef("/");
Assert.AreEqual(0, nr.Count);
}
public void ParsePluses()
{
NodeRef nr = new NodeRef("/Test/Test +1/Test +2");
Assert.AreEqual("/Test/Test +1/Test +2", nr.ToString());
Assert.AreEqual("Test +2", nr.Name);
}
public void DoubleDotTop()
{
NodeRef nr = new NodeRef("/a/..");
Assert.AreEqual("/", nr.Path);
}
public void Simple()
{
NodeRef up = new NodeRef("/dir1/sub1");
Assert.AreEqual("/dir1/sub1", up.Path);
}
