From eb6e23e1de0c05f10288a1493b5c98fda9f87d8f Mon Sep 17 00:00:00 2001
From: Thomas Mullaly <thomas.mullaly@gmail.com>
Date: Sun, 25 Jul 2010 18:19:48 -0400
Subject: [PATCH] urlmon: Implemented function to the file extension of a file
 in a URI path.

---
 dlls/urlmon/uri.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/dlls/urlmon/uri.c b/dlls/urlmon/uri.c
index 07e99449d61..20a2d87a175 100644
--- a/dlls/urlmon/uri.c
+++ b/dlls/urlmon/uri.c
@@ -61,6 +61,7 @@ typedef struct {
 
     INT             path_start;
     DWORD           path_len;
+    INT             extension_offset;
 } Uri;
 
 typedef struct {
@@ -535,6 +536,18 @@ static DWORD remove_dot_segments(WCHAR *path, DWORD path_len) {
     return len;
 }
 
+/* Attempts to find the file extension in a given path. */
+static INT find_file_extension(const WCHAR *path, DWORD path_len) {
+    const WCHAR *end;
+
+    for(end = path+path_len-1; end >= path && *end != '/' && *end != '\\'; --end) {
+        if(*end == '.')
+            return end-path;
+    }
+
+    return -1;
+}
+
 /* Computes the location where the elision should occur in the IPv6
  * address using the numerical values of each component stored in
  * 'values'. If the address shouldn't contain an elision then 'index'
@@ -2576,6 +2589,12 @@ static BOOL canonicalize_hierpart(const parse_data *data, Uri *uri, DWORD flags,
             return FALSE;
     }
 
+    if(uri->path_start > -1 && !computeOnly)
+        /* Finding file extensions happens for both types of URIs. */
+        uri->extension_offset = find_file_extension(uri->canon_uri+uri->path_start, uri->path_len);
+    else
+        uri->extension_offset = -1;
+
     return TRUE;
 }