From aa3c0701166dd7229871a04f21e3103eda5711e7 Mon Sep 17 00:00:00 2001
From: James South <james_south@hotmail.com>
Date: Wed, 18 Jun 2014 22:21:12 +0100
Subject: [PATCH] Updating cache checker.

Original method was too processor intensive


Former-commit-id: 689734e40fcd1a41d219e7b7e720c76943d179ba
---
 .../NET45/ImageProcessor.Web_NET45.csproj     |   7 +-
 .../NET45/Processors/Filter.cs                | 161 ++++++++++++++++++
 .../Filters/MatrixFilterRegexAttribute.cs     |  37 ----
 .../Imaging/Filters/MatrixFilters.cs          |  32 ++--
 src/ImageProcessor/Processors/Filter.cs       | 130 +-------------
 5 files changed, 175 insertions(+), 192 deletions(-)
 create mode 100644 src/ImageProcessor.Web/NET45/Processors/Filter.cs
 delete mode 100644 src/ImageProcessor/Imaging/Filters/MatrixFilterRegexAttribute.cs

diff --git a/src/ImageProcessor.Web/NET45/ImageProcessor.Web_NET45.csproj b/src/ImageProcessor.Web/NET45/ImageProcessor.Web_NET45.csproj
index 322a8fc669..694840487b 100644
--- a/src/ImageProcessor.Web/NET45/ImageProcessor.Web_NET45.csproj
+++ b/src/ImageProcessor.Web/NET45/ImageProcessor.Web_NET45.csproj
@@ -61,10 +61,12 @@
     <Compile Include="HttpModules\ImageProcessingModule.cs" />
     <Compile Include="ImageFactoryExtensions.cs" />
     <Compile Include="Processors\Alpha.cs" />
+    <Compile Include="Processors\AutoRotate.cs" />
     <Compile Include="Processors\BackgroundColor.cs" />
     <Compile Include="Processors\Brightness.cs" />
     <Compile Include="Processors\Contrast.cs" />
     <Compile Include="Processors\Crop.cs" />
+    <Compile Include="Processors\Filter.cs" />
     <Compile Include="Processors\IWebGraphicsProcessor.cs" />
     <Compile Include="Processors\Quality.cs" />
     <Compile Include="Processors\Resize.cs" />
@@ -87,11 +89,6 @@
     </EmbeddedResource>
     <EmbeddedResource Include="Configuration\Resources\security.config" />
   </ItemGroup>
-  <ItemGroup>
-    <EmbeddedResource Include="Configuration\Resources\processing - Copy.config">
-      <SubType>Designer</SubType>
-    </EmbeddedResource>
-  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/ImageProcessor.Web/NET45/Processors/Filter.cs b/src/ImageProcessor.Web/NET45/Processors/Filter.cs
new file mode 100644
index 0000000000..a83e9655cd
--- /dev/null
+++ b/src/ImageProcessor.Web/NET45/Processors/Filter.cs
@@ -0,0 +1,161 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="Filter.cs" company="James South">
+//   Copyright (c) James South.
+//   Licensed under the Apache License, Version 2.0.
+// </copyright>
+// <summary>
+//   Encapsulates methods with which to add filters to an image.
+// </summary>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace ImageProcessor.Web.Processors
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Reflection;
+    using System.Text;
+    using System.Text.RegularExpressions;
+    using ImageProcessor.Imaging.Filters;
+    using ImageProcessor.Processors;
+
+    /// <summary>
+    /// Encapsulates methods with which to add filters to an image.
+    /// </summary>
+    public class Filter : IWebGraphicsProcessor
+    {
+        /// <summary>
+        /// The regular expression to search strings for.
+        /// </summary>
+        private static readonly Regex QueryRegex = BuildRegex();
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Filter"/> class.
+        /// </summary>
+        public Filter()
+        {
+            this.Processor = new ImageProcessor.Processors.Filter();
+        }
+
+        /// <summary>
+        /// Gets the regular expression to search strings for.
+        /// </summary>
+        public Regex RegexPattern
+        {
+            get
+            {
+                return QueryRegex;
+            }
+        }
+
+        /// <summary>
+        /// Gets the order in which this processor is to be used in a chain.
+        /// </summary>
+        public int SortOrder
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Gets the processor.
+        /// </summary>
+        /// <value>
+        /// The processor.
+        /// </value>
+        public IGraphicsProcessor Processor { get; private set; }
+
+        /// <summary>
+        /// The position in the original string where the first character of the captured substring was found.
+        /// </summary>
+        /// <param name="queryString">
+        /// The query string to search.
+        /// </param>
+        /// <returns>
+        /// The zero-based starting position in the original string where the captured substring was found.
+        /// </returns>
+        public int MatchRegexIndex(string queryString)
+        {
+            int index = 0;
+
+            // Set the sort order to max to allow filtering.
+            this.SortOrder = int.MaxValue;
+
+            foreach (Match match in this.RegexPattern.Matches(queryString))
+            {
+                if (match.Success)
+                {
+                    if (index == 0)
+                    {
+                        // Set the index on the first instance only.
+                        this.SortOrder = match.Index;
+                        this.Processor.DynamicParameter = this.ParseFilter(match.Value.Split('=')[1]);
+                    }
+
+                    index += 1;
+                }
+            }
+
+            return this.SortOrder;
+        }
+
+        /// <summary>
+        /// Builds a regular expression from the <see cref="MatrixFilters"/> type, this allows extensibility.
+        /// </summary>
+        /// <returns>
+        /// The <see cref="Regex"/> to match matrix filters.
+        /// </returns>
+        private static Regex BuildRegex()
+        {
+            const BindingFlags Flags = BindingFlags.Public | BindingFlags.Static;
+            Type type = typeof(MatrixFilters);
+            IEnumerable<PropertyInfo> filters = type.GetProperties(Flags)
+                              .Where(p => p.PropertyType.IsAssignableFrom(typeof(IMatrixFilter)))
+                              .ToList();
+
+            StringBuilder stringBuilder = new StringBuilder();
+            stringBuilder.Append("filter=(");
+            int counter = 0;
+
+            foreach (PropertyInfo filter in filters)
+            {
+                if (counter == 0)
+                {
+                    stringBuilder.Append(filter.Name.ToLowerInvariant());
+                }
+                else
+                {
+                    stringBuilder.AppendFormat("|{0}", filter.Name.ToLowerInvariant());
+                }
+
+                counter++;
+            }
+
+            stringBuilder.Append(")");
+
+            return new Regex(stringBuilder.ToString(), RegexOptions.IgnoreCase | RegexOptions.Compiled);
+        }
+
+        /// <summary>
+        /// Parses the filter.
+        /// </summary>
+        /// <param name="identifier">
+        /// The identifier.
+        /// </param>
+        /// <returns>
+        /// The <see cref="IMatrixFilter"/>.
+        /// </returns>
+        private IMatrixFilter ParseFilter(string identifier)
+        {
+            const BindingFlags Flags = BindingFlags.Public | BindingFlags.Static;
+
+            Type type = typeof(MatrixFilters);
+            PropertyInfo filter =
+                type.GetProperties(Flags)
+                    .Where(p => p.PropertyType.IsAssignableFrom(typeof(IMatrixFilter)))
+                    .First(p => p.Name.Equals(identifier, StringComparison.InvariantCultureIgnoreCase));
+
+            return filter.GetValue(null, null) as IMatrixFilter;
+        }
+    }
+}
diff --git a/src/ImageProcessor/Imaging/Filters/MatrixFilterRegexAttribute.cs b/src/ImageProcessor/Imaging/Filters/MatrixFilterRegexAttribute.cs
deleted file mode 100644
index ebd5db3794..0000000000
--- a/src/ImageProcessor/Imaging/Filters/MatrixFilterRegexAttribute.cs
+++ /dev/null
@@ -1,37 +0,0 @@
-// --------------------------------------------------------------------------------------------------------------------
-// <copyright file="MatrixFilterRegexAttribute.cs" company="James South">
-//   Copyright (c) James South.
-//   Licensed under the Apache License, Version 2.0.
-// </copyright>
-// <summary>
-//   The filter attribute for identifying matrix filter properties.
-// </summary>
-// --------------------------------------------------------------------------------------------------------------------
-
-namespace ImageProcessor.Imaging.Filters
-{
-    using System;
-
-    /// <summary>
-    /// The filter attribute for identifying matrix filter properties.
-    /// </summary>
-    [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)]
-    public class MatrixFilterRegexAttribute : Attribute
-    {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="MatrixFilterRegexAttribute"/> class.
-        /// </summary>
-        /// <param name="regexIdentifier">
-        /// The regex identifier.
-        /// </param>
-        public MatrixFilterRegexAttribute(string regexIdentifier)
-        {
-            this.RegexIdentifier = regexIdentifier;
-        }
-
-        /// <summary>
-        /// Gets the regex identifier.
-        /// </summary>
-        public string RegexIdentifier { get; private set; }
-    }
-}
diff --git a/src/ImageProcessor/Imaging/Filters/MatrixFilters.cs b/src/ImageProcessor/Imaging/Filters/MatrixFilters.cs
index 8159a4c035..9c0b91df0c 100644
--- a/src/ImageProcessor/Imaging/Filters/MatrixFilters.cs
+++ b/src/ImageProcessor/Imaging/Filters/MatrixFilters.cs
@@ -18,9 +18,8 @@ namespace ImageProcessor.Imaging.Filters
     public static class MatrixFilters
     {
         /// <summary>
-        /// Gets the black white filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the black and white filter.
         /// </summary>
-        [MatrixFilterRegex("blackwhite")]
         public static IMatrixFilter BlackWhite
         {
             get
@@ -30,9 +29,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the comic filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the comic filter.
         /// </summary>
-        [MatrixFilterRegex("comic")]
         public static IMatrixFilter Comic
         {
             get
@@ -42,9 +40,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the gotham filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the gotham filter.
         /// </summary>
-        [MatrixFilterRegex("gotham")]
         public static IMatrixFilter Gotham
         {
             get
@@ -54,9 +51,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the greyscale filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the greyscale filter.
         /// </summary>
-        [MatrixFilterRegex("greyscale")]
         public static IMatrixFilter GreyScale
         {
             get
@@ -66,9 +62,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the high saturation filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the high saturation filter.
         /// </summary>
-        [MatrixFilterRegex("hisatch")]
         public static IMatrixFilter HiSatch
         {
             get
@@ -78,9 +73,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the invert filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the invert filter.
         /// </summary>
-        [MatrixFilterRegex("invert")]
         public static IMatrixFilter Invert
         {
             get
@@ -90,9 +84,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the lomograph filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the lomograph filter.
         /// </summary>
-        [MatrixFilterRegex("lomograph")]
         public static IMatrixFilter Lomograph
         {
             get
@@ -102,9 +95,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the low saturation filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the low saturation filter.
         /// </summary>
-        [MatrixFilterRegex("losatch")]
         public static IMatrixFilter LoSatch
         {
             get
@@ -114,9 +106,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the polaroid filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the polaroid filter.
         /// </summary>
-        [MatrixFilterRegex("polaroid")]
         public static IMatrixFilter Polaroid
         {
             get
@@ -126,9 +117,8 @@ namespace ImageProcessor.Imaging.Filters
         }
 
         /// <summary>
-        /// Gets the sepia filter.
+        /// Gets the <see cref="IMatrixFilter"/> for generating the sepia filter.
         /// </summary>
-        [MatrixFilterRegex("sepia")]
         public static IMatrixFilter Sepia
         {
             get
@@ -137,4 +127,4 @@ namespace ImageProcessor.Imaging.Filters
             }
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/ImageProcessor/Processors/Filter.cs b/src/ImageProcessor/Processors/Filter.cs
index 2673c7a294..b179b47bb4 100644
--- a/src/ImageProcessor/Processors/Filter.cs
+++ b/src/ImageProcessor/Processors/Filter.cs
@@ -11,14 +11,9 @@
 namespace ImageProcessor.Processors
 {
     #region Using
-    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
-    using System.Linq;
-    using System.Reflection;
-    using System.Text;
-    using System.Text.RegularExpressions;
     using ImageProcessor.Imaging.Filters;
     #endregion
 
@@ -27,23 +22,6 @@ namespace ImageProcessor.Processors
     /// </summary>
     public class Filter : IGraphicsProcessor
     {
-        /// <summary>
-        /// The regular expression to search strings for.
-        /// </summary>
-        private static readonly Regex QueryRegex = BuildRegex(); 
-
-        #region IGraphicsProcessor Members
-        /// <summary>
-        /// Gets the regular expression to search strings for.
-        /// </summary>
-        public Regex RegexPattern
-        {
-            get
-            {
-                return QueryRegex;
-            }
-        }
-
         /// <summary>
         /// Gets or sets DynamicParameter.
         /// </summary>
@@ -53,15 +31,6 @@ namespace ImageProcessor.Processors
             set;
         }
 
-        /// <summary>
-        /// Gets the order in which this processor is to be used in a chain.
-        /// </summary>
-        public int SortOrder
-        {
-            get;
-            private set;
-        }
-
         /// <summary>
         /// Gets or sets any additional settings required by the processor.
         /// </summary>
@@ -71,40 +40,6 @@ namespace ImageProcessor.Processors
             set;
         }
 
-        /// <summary>
-        /// The position in the original string where the first character of the captured substring was found.
-        /// </summary>
-        /// <param name="queryString">
-        /// The query string to search.
-        /// </param>
-        /// <returns>
-        /// The zero-based starting position in the original string where the captured substring was found.
-        /// </returns>
-        public int MatchRegexIndex(string queryString)
-        {
-            int index = 0;
-
-            // Set the sort order to max to allow filtering.
-            this.SortOrder = int.MaxValue;
-
-            foreach (Match match in this.RegexPattern.Matches(queryString))
-            {
-                if (match.Success)
-                {
-                    if (index == 0)
-                    {
-                        // Set the index on the first instance only.
-                        this.SortOrder = match.Index;
-                        this.DynamicParameter = match.Value.Split('=')[1];
-                    }
-
-                    index += 1;
-                }
-            }
-
-            return this.SortOrder;
-        }
-
         /// <summary>
         /// Processes the image.
         /// </summary>
@@ -123,8 +58,7 @@ namespace ImageProcessor.Processors
             try
             {
                 newImage = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppPArgb);
-
-                IMatrixFilter matrix = this.DynamicParameter as IMatrixFilter ?? this.ParseFilter((string)this.DynamicParameter);
+                IMatrixFilter matrix = this.DynamicParameter as IMatrixFilter;
 
                 if (matrix != null)
                 {
@@ -141,67 +75,5 @@ namespace ImageProcessor.Processors
 
             return image;
         }
-        #endregion
-
-        /// <summary>
-        /// Builds a regular expression from the <see cref="MatrixFilters"/> type, this allows extensibility.
-        /// </summary>
-        /// <returns>
-        /// The <see cref="Regex"/> to match matrix filters.
-        /// </returns>
-        private static Regex BuildRegex()
-        {
-            const BindingFlags Flags = BindingFlags.Public | BindingFlags.Static;
-            Type type = typeof(MatrixFilters);
-            IEnumerable<PropertyInfo> filters = type.GetProperties(Flags)
-                              .Where(p => p.IsDefined(typeof(MatrixFilterRegexAttribute), false))
-                              .ToList();
-
-            StringBuilder stringBuilder = new StringBuilder();
-            stringBuilder.Append("filter=(");
-            int counter = 0;
-
-            foreach (PropertyInfo filter in filters)
-            {
-                MatrixFilterRegexAttribute attribute = (MatrixFilterRegexAttribute)filter.GetCustomAttributes(typeof(MatrixFilterRegexAttribute), false).First();
-
-                if (counter == 0)
-                {
-                    stringBuilder.Append(attribute.RegexIdentifier);
-                }
-                else
-                {
-                    stringBuilder.AppendFormat("|{0}", attribute.RegexIdentifier);
-                }
-
-                counter++;
-            }
-
-            stringBuilder.Append(")");
-
-            return new Regex(stringBuilder.ToString(), RegexOptions.IgnoreCase | RegexOptions.Compiled);
-        }
-
-        /// <summary>
-        /// Parses the filter.
-        /// </summary>
-        /// <param name="identifier">
-        /// The identifier.
-        /// </param>
-        /// <returns>
-        /// The <see cref="IMatrixFilter"/>.
-        /// </returns>
-        private IMatrixFilter ParseFilter(string identifier)
-        {
-            const BindingFlags Flags = BindingFlags.Public | BindingFlags.Static;
-
-            Type type = typeof(MatrixFilters);
-            PropertyInfo filter =
-                type.GetProperties(Flags)
-                    .Where(p => p.IsDefined(typeof(MatrixFilterRegexAttribute), false))
-                    .First(p => ((MatrixFilterRegexAttribute)p.GetCustomAttributes(typeof(MatrixFilterRegexAttribute), false).First()).RegexIdentifier == identifier);
-
-            return filter.GetValue(null, null) as IMatrixFilter;
-        }
     }
 }