Esempio n. 1
0
        private static IFileSystem GetFileSystem(string text, out Path path)
        {
            if (_providers == null)
            {
                throw new InvalidOperationException("The value of 'Services' property is null.");
            }

            if (string.IsNullOrWhiteSpace(text))
            {
                throw new ArgumentNullException("text");
            }

            //如果路径解析失败则返回空
            if (!Path.TryParse(text, out path))
            {
                return(null);
            }

            //如果路径模式为空则返回本地文件系统
            if (string.IsNullOrEmpty(path.Schema))
            {
                return(LocalFileSystem.Instance);
            }

            var fileSystem = _providers.Resolve <IFileSystem>(path.Schema);

            if (fileSystem == null)
            {
                throw new InvalidOperationException(string.Format("Can not obtain the File or Directory provider by the '{0}' path.", path));
            }

            return(fileSystem);
        }
Esempio n. 2
0
        private static IFileSystem GetFileSystem(string text, bool throwException, out Path path)
        {
            if (throwException)
            {
                path = Path.Parse(text);
            }
            else if (!Path.TryParse(text, out path))
            {
                return(null);
            }

            var scheme = path.Scheme;

            //如果路径模式为空则使用默认文件系统方案
            if (string.IsNullOrEmpty(scheme))
            {
                if (path.Anchor == PathAnchor.Application)
                {
                    return(LocalFileSystem.Instance);
                }

                scheme = FileSystem.Scheme;

                //如果文件系统模式为空则返回本地文件方案
                if (string.IsNullOrEmpty(scheme))
                {
                    return(LocalFileSystem.Instance);
                }
            }

            //尝试获取对应的文件系统提供程序
            _providers.TryGet(scheme, out var fileSystem);

            if (fileSystem == null)
            {
                if (throwException)
                {
                    throw new IOException($"Can not obtain the File or Directory provider by the '{text}'.");
                }

                return(null);
            }

            return(fileSystem);
        }
        private static IFileSystem GetFileSystem(string text, out Path path)
        {
            var providers = _providers;

            if (providers == null)
            {
                throw new InvalidOperationException("The value of 'Providers' property is null.");
            }

            if (string.IsNullOrWhiteSpace(text))
            {
                throw new ArgumentNullException("text");
            }

            //如果路径解析失败则返回空
            if (!Path.TryParse(text, out path))
            {
                return(null);
            }

            var scheme = path.Scheme;

            //如果路径模式为空则使用默认文件系统方案
            if (string.IsNullOrWhiteSpace(scheme))
            {
                scheme = FileSystem.Scheme;

                //如果文件系统模式为空则返回本地文件方案
                if (string.IsNullOrWhiteSpace(scheme))
                {
                    return(LocalFileSystem.Instance);
                }
            }

            //根据文件系统模式从服务容器中获得对应的文件系统提供程序
            var fileSystem = providers.Resolve <IFileSystem>(scheme);

            if (fileSystem == null)
            {
                throw new InvalidOperationException(string.Format("Can not obtain the File or Directory provider by the '{0}'.", text));
            }

            return(fileSystem);
        }