diff --git a/doomsday/plugins/common/include/hexlex.h b/doomsday/plugins/common/include/hexlex.h
index f458260103..983cfb1b1d 100644
--- a/doomsday/plugins/common/include/hexlex.h
+++ b/doomsday/plugins/common/include/hexlex.h
@@ -76,7 +76,7 @@ class HexLex
 
     int readNumber();
     Str const *readString();
-    Uri *readUri(char const *defaultScheme = "");
+    de::Uri readUri(de::String const &defaultScheme = "");
 
     /**
      * Returns the line number at the current position in the script.
diff --git a/doomsday/plugins/common/src/animdefs.cpp b/doomsday/plugins/common/src/animdefs.cpp
index cb01f1e54a..ebc7f0f97a 100644
--- a/doomsday/plugins/common/src/animdefs.cpp
+++ b/doomsday/plugins/common/src/animdefs.cpp
@@ -240,9 +240,8 @@ static void AnimDefsParser(ddstring_s const *path)
         // string(texture-scheme) string(texture-path)
         if(char const *scheme = textureScheme(lexer.token()))
         {
-            uri_s *uri = lexer.readUri(scheme);
-            int const texNumBase = Textures_UniqueId2(uri, !isCustom);
-            Uri_Delete(uri);
+            de::Uri uri = lexer.readUri(scheme);
+            int const texNumBase = Textures_UniqueId2(reinterpret_cast<uri_s *>(&uri), !isCustom);
 
             bool const ignore = (texNumBase == -1);
             int groupNumber = 0;
diff --git a/doomsday/plugins/common/src/hexlex.cpp b/doomsday/plugins/common/src/hexlex.cpp
index 92160719e9..d07cf27c1b 100644
--- a/doomsday/plugins/common/src/hexlex.cpp
+++ b/doomsday/plugins/common/src/hexlex.cpp
@@ -23,6 +23,8 @@
 #include <cstdio>
 #include <cstring>
 
+using namespace de;
+
 #define T_COMMENT ';' ///< Single-line comment.
 #define T_QUOTE   '"'
 
@@ -43,12 +45,12 @@ void HexLex::syntaxError(char const *message)
               F_PrettyPath(Str_Text(&_sourcePath)), _lineNumber, message);
 }
 
-HexLex::HexLex(Str const *script, Str const *sourcePath)
-    : _script(0)
-    , _readPos(0)
+HexLex::HexLex(ddstring_s const *script, ddstring_s const *sourcePath)
+    : _script    (0)
+    , _readPos   (0)
     , _lineNumber(0)
     , _alreadyGot(false)
-    , _multiline(false)
+    , _multiline (false)
 {
     Str_InitStd(&_sourcePath);
     Str_InitStd(&_token);
@@ -69,7 +71,7 @@ HexLex::~HexLex()
     Str_Free(&_token);
 }
 
-void HexLex::parse(Str const *script)
+void HexLex::parse(ddstring_s const *script)
 {
     _script     = script;
     _readPos    = 0;
@@ -78,7 +80,7 @@ void HexLex::parse(Str const *script)
     Str_Clear(&_token);
 }
 
-void HexLex::setSourcePath(Str const *sourcePath)
+void HexLex::setSourcePath(ddstring_s const *sourcePath)
 {
     if(!sourcePath)
     {
@@ -190,7 +192,7 @@ void HexLex::unreadToken()
     _alreadyGot = true;
 }
 
-Str const *HexLex::token()
+ddstring_s const *HexLex::token()
 {
     return &_token;
 }
@@ -213,7 +215,7 @@ int HexLex::readNumber()
     return number;
 }
 
-Str const *HexLex::readString()
+ddstring_s const *HexLex::readString()
 {
     if(!readToken())
     {
@@ -222,16 +224,13 @@ Str const *HexLex::readString()
     return &_token;
 }
 
-Uri *HexLex::readUri(char const *defaultScheme)
+de::Uri HexLex::readUri(String const &defaultScheme)
 {
     if(!readToken())
     {
         syntaxError("Missing uri");
     }
-
-    Uri *uri = Uri_SetScheme(Uri_New(), defaultScheme);
-    Uri_SetPath(uri, Str_Text(Str_PercentEncode(AutoStr_FromTextStd(Str_Text(&_token)))));
-    return uri;
+    return de::Uri(defaultScheme, Path(Str_Text(Str_PercentEncode(AutoStr_FromTextStd(Str_Text(&_token))))));
 }
 
 int HexLex::lineNumber() const
diff --git a/doomsday/plugins/common/src/mapinfo.cpp b/doomsday/plugins/common/src/mapinfo.cpp
index 56503dcaf8..43140771d4 100644
--- a/doomsday/plugins/common/src/mapinfo.cpp
+++ b/doomsday/plugins/common/src/mapinfo.cpp
@@ -124,7 +124,7 @@ void MapInfoParser(ddstring_s const *path)
                               lexer.token(), F_PrettyPath(Str_Text(path)), lexer.lineNumber());
                 }
 
-                de::Uri mapUri = G_ComposeMapUri(0, tmap - 1);
+                de::Uri const mapUri = G_ComposeMapUri(0, tmap - 1);
                 mapinfo_t *info = P_MapInfo(&mapUri);
                 if(!info)
                 {
@@ -149,22 +149,20 @@ void MapInfoParser(ddstring_s const *path)
                 {
                     if(!Str_CompareIgnoreCase(lexer.token(), "sky1"))
                     {
-                        uri_s *uri = lexer.readUri("Textures");
+                        de::Uri uri = lexer.readUri("Textures");
 
-                        info->sky1Material    = Materials_ResolveUri(uri);
+                        info->sky1Material    = Materials_ResolveUri(reinterpret_cast<uri_s *>(&uri));
                         info->sky1ScrollDelta = (float) lexer.readNumber() / 256;
 
-                        Uri_Delete(uri);
                         continue;
                     }
                     if(!Str_CompareIgnoreCase(lexer.token(), "sky2"))
                     {
-                        uri_s *uri = lexer.readUri("Textures");
+                        de::Uri uri = lexer.readUri("Textures");
 
-                        info->sky2Material    = Materials_ResolveUri(uri);
+                        info->sky2Material    = Materials_ResolveUri(reinterpret_cast<uri_s *>(&uri));
                         info->sky2ScrollDelta = (float) lexer.readNumber() / 256;
 
-                        Uri_Delete(uri);
                         continue;
                     }
                     if(!Str_CompareIgnoreCase(lexer.token(), "doublesky"))