AppResourceFilesCollection.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » Compilation » C# / CSharp Open Source

//
// System.Web.Compilation.AppResourceFilesCollection
//
// Authors:
//   Marek Habersack (grendello@gmail.com)
//
// (C) 2006 Marek Habersack
//

//
// 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.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Web.Util;

namespace System.Web.Compilation{
  internal enum AppResourceFileKind
  {
    NotResource,
    ResX,
    Resource,
    Binary
  };

  internal class AppResourcesLengthComparer<T>: IComparer<T>
  {
    int CompareStrings (string a, string b)
    {
      if (a == null || b == null)
        return 0;
      return (int)b.Length - (int)a.Length;
    }

    int IComparer<T>.Compare (T _a, T _b) 
    {
      string a = null, b = null;
      if (_a is string && _b is string) {
        a = _a as string;
        b = _b as string;
      } else if (_a is List<string> && _b is List<string>) {
        List<string> tmp = _a as List<string>;
        a = tmp [0];
        tmp = _b as List<string>;
        b = tmp [0];
      } else if (_a is AppResourceFileInfo && _b is AppResourceFileInfo) {
        AppResourceFileInfo tmp = _a as AppResourceFileInfo;
        a = tmp.Info.Name;
        tmp = _b as AppResourceFileInfo;
        b = tmp.Info.Name;
      } else
        return 0;
      return CompareStrings (a, b);
    }
  }
  
  internal class AppResourceFilesCollection
  {
    List <AppResourceFileInfo> files;
    bool isGlobal;
    string sourceDir;

    public string SourceDir {
      get { return sourceDir; }
    }
    
    public bool HasFiles {
      get {
        if (String.IsNullOrEmpty (sourceDir))
          return false;
        return files.Count > 0;
      }
    }

    public List <AppResourceFileInfo> Files {
      get { return files; }
    }
    
    public AppResourceFilesCollection (HttpContext context)
    {
      if (context == null)
        throw new ArgumentNullException ("context");
      
      this.isGlobal = true;
      this.files = new List <AppResourceFileInfo> ();

      string resourcePath;
      resourcePath = Path.Combine (HttpRuntime.AppDomainAppPath, "App_GlobalResources");
      if (Directory.Exists (resourcePath))
        sourceDir = resourcePath;
    }

    public AppResourceFilesCollection (string parserDir)
    {
      if (String.IsNullOrEmpty (parserDir))
        throw new ArgumentException ("parserDir cannot be empty");
      this.isGlobal = true;
      this.files = new List <AppResourceFileInfo> ();

      string resourcePath;
      resourcePath = Path.Combine (parserDir, "App_LocalResources");
      if (Directory.Exists (resourcePath)) {
        sourceDir = resourcePath;
        HttpApplicationFactory.WatchLocationForRestart (sourceDir, "*");
      }
    }
    
    public void Collect ()
    {
      if (String.IsNullOrEmpty (sourceDir))
          return;
      DirectoryInfo di = new DirectoryInfo (sourceDir);
      FileInfo[] infos = di.GetFiles ();
      if (infos.Length == 0)
        return;

      string extension;
      AppResourceFileInfo arfi;
      AppResourceFileKind kind;
      
      foreach (FileInfo fi in infos) {
        extension = fi.Extension;
        if (Acceptable (extension, out kind))
          arfi = new AppResourceFileInfo (fi, kind);
        else
          continue;

        files.Add (arfi);
      }

      if (isGlobal && files.Count == 0)
        return;
      AppResourcesLengthComparer<AppResourceFileInfo> lcFiles = new AppResourcesLengthComparer<AppResourceFileInfo> ();
      files.Sort (lcFiles);
    }

    bool Acceptable (string extension, out AppResourceFileKind kind)
    {
      switch (extension.ToLower (Helpers.InvariantCulture))
      {
        default:
          kind = AppResourceFileKind.NotResource;
          return false;

        case ".resx":
          kind = AppResourceFileKind.ResX;
          return true;

        case ".resource":
          kind = AppResourceFileKind.Resource;
          return true;
      }
    }
  };
};