ContentDocument.cs :  » Content-Management-Systems-CMS » Kooboo » Everest » Library » IO » C# / CSharp Open Source

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Everest.Library;
namespace Everest.Library.IO{
    /// <summary>
    /// 
    /// </summary>
    public static class ContentDocument
    {
        private static IList<IDocumentReader> documentReaders = new List<IDocumentReader>();

        /// <summary>
        /// Initializes the <see cref="Document"/> class.
        /// </summary>
        static ContentDocument()
        {
            var readers = UnityManager.ResolveAll<IDocumentReader>();
            foreach (var reader in readers)
            {
                if (reader.SupportedExtensions == null || reader.SupportedExtensions.Count == 0)
                {
                    throw new ArgumentException(string.Format(Resources.DocumentReaderIsInvalid, reader.GetType()), "SupportedExtensions");
                }
                foreach (var extension in reader.SupportedExtensions)
                {
                    documentReaders.Add(reader);
                }
            }
        }
        /// <summary>
        /// Reads as text.
        /// </summary>
        /// <param name="filePath">The file path.</param>
        /// <returns></returns>
        public static string ReadAsText(string filePath)
        {
            if (!File.Exists(filePath))
            {
                return string.Empty;
            }
            var extension = Path.GetExtension(filePath);
            string content = string.Empty;
            foreach (var reader in documentReaders)
            {
                if (reader.SupportedExtensions.Contains(extension) || reader.SupportedExtensions.Contains("*.*"))
                {
                    var readed = reader.ReadAsText(filePath, out content);
                    if (readed)
                    {
                        break;
                    }
                }
            }
            return content;
        }
    }
}