ntpa/Ntp.Analyzer/Export/FileSystemDestination.cs

//
// FileSystemDestination.cs
//
// Author:
//       Carsten Sonne Larsen <cs@innolan.dk>
//
// Copyright (c) 2016 Carsten Sonne Larsen
//
// 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.IO;
using Ntp.Analyzer.Localize;
using Ntp.Analyzer.Log;
using Ntp.Interop;

namespace Ntp.Analyzer.Export
{
    public abstract class FileSystemDestination : StreamDestination
    {
        protected FileSystemDestination ()
        {
        }

        public static uint? FileUserId;
        public static uint? FileGroupId;
        public static uint FileMask;

        protected void TestFile (string file, string content)
        {
            if (File.Exists (file))
                File.Delete (file);

            File.WriteAllText (file, content);
            File.Delete (file);
        }

        protected void PrepareFile (string file, LogBase log)
        {
            string created = null;
            try {
                created = DirectoryCommand.CreateRecursiveFromFile (file);
            } catch (Exception e) {
                log.WriteLine (String.Format (
                    LogMessage.DestinationPathError, file),
                    Severity.Error);
                log.WriteLine (e, Severity.Trace);
            }

            if (created != null) {
                log.WriteLine (String.Format (
                    LogMessage.DestinationNewDirectory, created),
                    Severity.Notice);
            }

            if (File.Exists (file))
                File.Delete (file);
        }

        protected void WriteFile (Stream stream, string file, LogBase log)
        {
            FileStream fileStream = null;
            try {
                fileStream = new FileStream (file, FileMode.CreateNew);
                stream.CopyTo (fileStream);
            } catch (Exception e) {
                log.WriteLine (String.Format (
                    LogMessage.DestinationFileError, file),
                    Severity.Error);
                log.WriteLine (e, Severity.Trace);
            } finally {
                // Release memory
                if (fileStream != null) {
                    fileStream.Close ();
                    fileStream = null;
                }
            }
        }

        protected void ApplyPermissions (string file, LogBase log)
        {
            if (FileUserId != null) {
                try {
                    Permission.ChangeFileOwner (file, FileUserId.Value, FileGroupId);
                } catch (Exception e) {
                    log.WriteLine (String.Format (
                        LogMessage.DestinationOwnerError, file),
                        Severity.Error);
                    log.WriteLine (e, Severity.Trace);
                }
            }

            try {
                Permission.ChangeFileMode (file, FileMask);
            } catch (Exception e) {
                log.WriteLine (String.Format (
                    LogMessage.DestinationPermissonError, file),
                    Severity.Error);
                log.WriteLine (e, Severity.Trace);
            }
        }
    }
}