C# FileInfoBase.Open方法代码示例

        public static IFileReader CreateFromFileName(FileInfoBase fileInfoBase)
        {
            if (IsCsvFile(fileInfoBase.FullName))
            {
                var reader = new CsvHelper.CsvReader(new StreamReader(fileInfoBase.OpenRead()), new CsvConfiguration
                {
                    HasHeaderRecord = true,
                    Delimiter = ";"
                });

                return new CsvReader(reader);
            }

            if (IsExcelFile(fileInfoBase.FullName))
            {
                var excelReader = ExcelReaderFactory.CreateOpenXmlReader(fileInfoBase.Open(FileMode.Open, FileAccess.Read));
                excelReader.IsFirstRowAsColumnNames = true;
                return new ExcelReader(excelReader);
            }

            throw new InvalidOperationException();
        }

        /// <summary>
        /// Provides a common way for opening a file stream for exclusively deleting the file. 
        /// </summary>
        private static Stream GetFileDeleteStream(FileInfoBase file)
        {
            Contract.Assert(file != null);

            // Open file exclusively for delete sharing only
            return file.Open(FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete);
        }

        /// <summary>
        /// Extracts source directories from the csproj file.
        /// The expected directory info list is the csproj's directory and all project references.
        /// </summary>
        /// <param name="csprojFile"></param>
        /// <returns></returns>
        private DirectoryInfoBase[] ExtractSourceDirectories(FileInfoBase csprojFile)
        {
            // Data validation
            Ensure.That(() => csprojFile).IsNotNull();
            Ensure.That(csprojFile.Exists, string.Format("Could not find '{0}' file", csprojFile)).IsTrue();

            // Initialize the extracted directories
            List<DirectoryInfoBase> extractedSourceDirectories = new List<DirectoryInfoBase>();

            // Add the csproj's directory
            DirectoryInfoBase projectDirectory = this.fileSystem.DirectoryInfo.FromDirectoryName(this.fileSystem.Path.GetDirectoryName(csprojFile.FullName));
            extractedSourceDirectories.Add(projectDirectory);

            // Load xml document
            XmlDocument xmlDocument = new XmlDocument();
            using (Stream stream = csprojFile.Open(FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            {
                xmlDocument.Load(stream);
            }

            // Extract
            XmlNamespaceManager xmlNamespaceManager = new XmlNamespaceManager(xmlDocument.NameTable);
            xmlNamespaceManager.AddNamespace("msbuild", "http://schemas.microsoft.com/developer/msbuild/2003");
            XmlNodeList xmlNodes = xmlDocument.SelectNodes("//msbuild:ProjectReference", xmlNamespaceManager);
            for (int i = 0; i < xmlNodes.Count; ++i)
            {
                XmlNode xmlNode = xmlNodes.Item(i);
                string includeValue = xmlNode.Attributes["Include"].Value;
                string combinedPath = this.fileSystem.Path.Combine(projectDirectory.FullName, includeValue);

                // The combinedPath can contains both forward and backslash path chunk.
                // In linux environment we can end up having "/..\" in the path which make the GetDirectoryName method bugging (returns empty).
                // For this reason we need to make sure that the combined path uses forward slashes
                combinedPath = combinedPath.Replace(@"\", "/");

                // Add the combined path
                extractedSourceDirectories.Add(this.fileSystem.DirectoryInfo.FromDirectoryName(this.fileSystem.Path.GetDirectoryName(this.fileSystem.Path.GetFullPath(combinedPath))));
            }

            // Return the extracted directories
            return extractedSourceDirectories.ToArray();
        }