Add runtime classes so that PathRelativeFileReader works on .NET

1 files changed, 42 insertions, 0 deletions

diff --git a/dotnet/Mammoth/Couscous/java/net/URI.cs b/dotnet/Mammoth/Couscous/java/net/URI.cs
new file mode 100644
index 0000000..818d694
--- /dev/null
+++ b/dotnet/Mammoth/Couscous/java/net/URI.cs
@@ -0,0 +1,42 @@
+using System;
+
+namespace Mammoth.Couscous.java.net {
+    internal class URI {
+        private readonly Uri _uri;
+        
+        internal URI(string uri) {
+            try {
+                _uri = new Uri(uri, UriKind.RelativeOrAbsolute);
+            } catch (UriFormatException exception) {
+                throw new URISyntaxException(exception.Message);
+            }
+        }
+        
+        internal URI(Uri uri) {
+            _uri = uri;
+        }
+        
+        internal bool isAbsolute() {
+            return _uri.IsAbsoluteUri;
+        }
+        
+        internal URL toURL() {
+            return new URL(_uri.ToString());
+        }
+        
+        internal URI resolve(string relativeUri) {
+            if (new URI(relativeUri).isAbsolute()) {
+                return new URI(relativeUri);
+            } else if (_uri.IsAbsoluteUri) {
+                return new URI(new Uri(_uri, relativeUri));
+            } else {
+                var path = _uri.ToString();
+                var lastSlashIndex = path.LastIndexOf("/");
+                var basePath = lastSlashIndex == -1
+                    ?  "."
+                    : path.Substring(0, lastSlashIndex + 1);
+                return new URI(basePath + relativeUri);
+            }
+        }
+    }
+}