[hyena/hyenafied-safeuri] Migrate SafeUri into Hyena.

[Ruben Vermeersch <rubenv src gnome org>]

commit 7e18b586f100abaf977612fa32c4078a06a99dcb
Author: Ruben Vermeersch <ruben savanne be>
Date:   Sun Aug 1 15:35:01 2010 +0200

    Migrate SafeUri into Hyena.

 Hyena/Hyena.csproj     |    1 +
 Hyena/Hyena.dll.config |    4 +
 Hyena/Hyena/SafeUri.cs |  208 ++++++++++++++++++++++++++++++++++++++++++++++++
 Hyena/Makefile.am      |    6 +-
 4 files changed, 218 insertions(+), 1 deletions(-)
---
diff --git a/Hyena/Hyena.csproj b/Hyena/Hyena.csproj
index b96a1ca..e92b2e5 100644
--- a/Hyena/Hyena.csproj
+++ b/Hyena/Hyena.csproj
@@ -81,6 +81,7 @@
     <Compile Include="Hyena.Query\StringQueryValue.cs" />
     <Compile Include="Hyena\Timer.cs" />
     <Compile Include="Hyena\Paths.cs" />
+    <Compile Include="Hyena\SafeUri.cs" />
     <Compile Include="Hyena\DateTimeUtil.cs" />
     <Compile Include="Hyena.SExpEngine\ArithmeticFunctionSet.cs" />
     <Compile Include="Hyena.SExpEngine\CastFunctionSet.cs" />
diff --git a/Hyena/Hyena.dll.config b/Hyena/Hyena.dll.config
new file mode 100644
index 0000000..cb3fab2
--- /dev/null
+++ b/Hyena/Hyena.dll.config
@@ -0,0 +1,4 @@
+<configuration>
+  <dllmap dll="libglib-2.0-0.dll" target="libglib-2.0.so.0" os="!windows,osx"/>
+  <dllmap dll="libglib-2.0-0.dll" target="libglib-2.0.dylib" os="osx"/>
+</configuration>
diff --git a/Hyena/Hyena/SafeUri.cs b/Hyena/Hyena/SafeUri.cs
new file mode 100644
index 0000000..a5ff842
--- /dev/null
+++ b/Hyena/Hyena/SafeUri.cs
@@ -0,0 +1,208 @@
+/***************************************************************************
+ *  SafeUri.cs
+ *
+ *  Copyright (C) 2006 Novell, Inc.
+ *  Written by Aaron Bockover <aaron abock org>
+ ****************************************************************************/
+
+/*  THIS FILE IS LICENSED UNDER THE MIT LICENSE AS OUTLINED IMMEDIATELY BELOW:
+ *
+ *  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.
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Hyena
+{
+    public class SafeUri
+    {
+        private enum LocalPathCheck {
+            NotPerformed,
+            Yes,
+            No
+        }
+
+        private static int MAX_SCHEME_LENGTH = 8;
+
+        private string uri;
+        private string local_path;
+        private string scheme;
+        private LocalPathCheck local_path_check = LocalPathCheck.NotPerformed;
+
+        public SafeUri (string uri)
+        {
+            int scheme_delimit_index = uri.IndexOf ("://");
+            if (scheme_delimit_index > 0 && scheme_delimit_index <= MAX_SCHEME_LENGTH) {
+                this.uri = uri;
+            } else {
+                this.uri = FilenameToUri (uri);
+            }
+        }
+
+        public SafeUri (string uri, bool isUri)
+        {
+            if (isUri) {
+                this.uri = uri;
+            } else {
+                this.uri = FilenameToUri (uri);
+            }
+        }
+
+        public SafeUri (Uri uri)
+        {
+            this.uri = uri.AbsoluteUri;
+        }
+
+        public static string FilenameToUri (string localPath)
+        {
+            // TODO: replace with managed conversion to avoid marshalling
+            IntPtr path_ptr = GLib.Marshaller.StringToPtrGStrdup (localPath);
+
+#if WIN32
+            IntPtr uri_ptr = g_filename_to_uri_utf8 (path_ptr, IntPtr.Zero, IntPtr.Zero);
+#else
+            IntPtr uri_ptr = g_filename_to_uri (path_ptr, IntPtr.Zero, IntPtr.Zero);
+#endif
+            GLib.Marshaller.Free (path_ptr);
+
+            if (uri_ptr == IntPtr.Zero) {
+                throw new ApplicationException ("Filename path must be absolute");
+            }
+
+            string uri = GLib.Marshaller.Utf8PtrToString (uri_ptr);
+            GLib.Marshaller.Free (uri_ptr);
+
+            return uri;
+        }
+
+        public static string UriToFilename (string uri)
+        {
+            // TODO: replace with managed conversion to avoid marshalling
+            IntPtr uri_ptr = GLib.Marshaller.StringToPtrGStrdup (uri);
+#if WIN32
+            IntPtr path_ptr = g_filename_from_uri_utf8 (uri_ptr, IntPtr.Zero, IntPtr.Zero);
+#else
+            IntPtr path_ptr = g_filename_from_uri (uri_ptr, IntPtr.Zero, IntPtr.Zero);
+#endif
+
+            GLib.Marshaller.Free (uri_ptr);
+
+            if (path_ptr == IntPtr.Zero) {
+                throw new ApplicationException ("URI could not be converted to local file location");
+            }
+
+            string path = GLib.Marshaller.Utf8PtrToString (path_ptr);
+            GLib.Marshaller.Free (path_ptr);
+
+            return path;
+        }
+
+        public static string UriToFilename (SafeUri uri)
+        {
+            return UriToFilename (uri.AbsoluteUri);
+        }
+
+        public override string ToString ()
+        {
+            return AbsoluteUri;
+        }
+
+        public static implicit operator string (SafeUri s)
+        {
+            return s.ToString ();
+        }
+
+        public override bool Equals (object o)
+        {
+            if (!(o is SafeUri)) {
+                return false;
+            }
+
+            return (o as SafeUri).AbsoluteUri == AbsoluteUri;
+        }
+
+        public override int GetHashCode ()
+        {
+            return AbsoluteUri.GetHashCode ();
+        }
+
+        public string AbsoluteUri {
+            get { return uri; }
+        }
+
+        public bool IsLocalPath {
+            get {
+                if (local_path_check == LocalPathCheck.NotPerformed) {
+                    if (IsFile) {
+                        local_path_check = LocalPathCheck.Yes;
+                        return true;
+                    } else {
+                        local_path_check = LocalPathCheck.No;
+                        return false;
+                    }
+                }
+
+                return local_path_check == LocalPathCheck.Yes;
+            }
+        }
+
+        public string AbsolutePath {
+            get {
+                if (local_path == null && IsLocalPath) {
+                    local_path = UriToFilename (uri);
+                }
+
+                return local_path;
+            }
+        }
+
+        public string LocalPath {
+            get { return AbsolutePath; }
+        }
+
+        public string Scheme {
+            get {
+                if (scheme == null) {
+                    scheme = uri.Substring (0, uri.IndexOf ("://"));
+                }
+
+                return scheme;
+            }
+        }
+
+        public bool IsFile {
+            get { return Scheme == System.Uri.UriSchemeFile; }
+        }
+
+#if WIN32
+        [DllImport ("libglib-2.0-0.dll")]
+        private static extern IntPtr g_filename_to_uri_utf8 (IntPtr filename, IntPtr hostname, IntPtr error);
+
+        [DllImport ("libglib-2.0-0.dll")]
+        private static extern IntPtr g_filename_from_uri_utf8 (IntPtr uri, IntPtr hostname, IntPtr error);
+#else
+        [DllImport ("libglib-2.0-0.dll")]
+        private static extern IntPtr g_filename_to_uri (IntPtr filename, IntPtr hostname, IntPtr error);
+
+        [DllImport ("libglib-2.0-0.dll")]
+        private static extern IntPtr g_filename_from_uri (IntPtr uri, IntPtr hostname, IntPtr error);
+#endif
+    }
+}
diff --git a/Hyena/Makefile.am b/Hyena/Makefile.am
index 6825feb..d63bfc6 100644
--- a/Hyena/Makefile.am
+++ b/Hyena/Makefile.am
@@ -1,6 +1,6 @@
 ASSEMBLY = Hyena
 TARGET = library
-LINK = -r:Mono.Posix -r:System  -r:System.Core
+LINK = -r:Mono.Posix -r:System  -r:System.Core $(GLIBSHARP_LIBS)
 SOURCES =  \
 	Hyena.Collections/CollectionExtensions.cs \
 	Hyena.Collections/IntervalHeap.cs \
@@ -113,6 +113,7 @@ SOURCES =  \
 	Hyena/Log.cs \
 	Hyena/Paths.cs \
 	Hyena/PlatformDetection.cs \
+	Hyena/SafeUri.cs \
 	Hyena/StringUtil.cs \
 	Hyena/Tests/CryptoUtilTests.cs \
 	Hyena/Tests/DateTimeUtilTests.cs \
@@ -126,3 +127,6 @@ SOURCES =  \
 	System.Web/HttpUtility.cs
 
 include $(top_srcdir)/build/build.mk
+
+EXTRA_DIST += Hyena.dll.config
+module_SCRIPTS += Hyena.dll.config