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6502bench/SourceGen/Tools/WpfGui/FileConcatenator.xaml.cs

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/*
* Copyright 2019 faddenSoft
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using Microsoft.Win32;
using CommonUtil;
namespace SourceGen.Tools.WpfGui {
/// <summary>
/// File concatenation tool.
/// </summary>
public partial class FileConcatenator : Window, INotifyPropertyChanged {
//
// Every action causes a selection change, so we don't explicitly call an "update
// controls" function.
//
public bool IsRemoveEnabled {
get { return mIsRemoveEnabled; }
set { mIsRemoveEnabled = value; OnPropertyChanged(); }
}
private bool mIsRemoveEnabled;
public bool IsUpEnabled {
get { return mIsUpEnabled; }
set { mIsUpEnabled = value; OnPropertyChanged(); }
}
private bool mIsUpEnabled;
public bool IsDownEnabled {
get { return mIsDownEnabled; }
set { mIsDownEnabled = value; OnPropertyChanged(); }
}
private bool mIsDownEnabled;
public bool IsSaveEnabled {
get { return mIsSaveEnabled; }
set { mIsSaveEnabled = value; OnPropertyChanged(); }
}
private bool mIsSaveEnabled;
/// <summary>
/// Item for main list.
/// </summary>
public class ConcatItem {
public string PathName { get; private set; }
public string FileName { get; private set; }
public long Length { get; private set; }
public string Crc32 { get; private set; }
public ConcatItem(string pathName, long length, uint crc32) {
PathName = pathName;
Length = length;
Crc32 = crc32.ToString("x8");
FileName = Path.GetFileName(pathName);
}
}
public ObservableCollection<ConcatItem> ConcatItems { get; private set; } =
new ObservableCollection<ConcatItem>();
// INotifyPropertyChanged implementation
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged([CallerMemberName] string propertyName = "") {
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="owner">Parent window.</param>
public FileConcatenator(Window owner) {
InitializeComponent();
Owner = owner;
DataContext = this;
// all "enabled" flags are initially false
}
private void ConcatGrid_SelectionChanged(object sender, SelectionChangedEventArgs e) {
bool isItemSelected = (concatGrid.SelectedItem != null);
IsRemoveEnabled = isItemSelected;
IsUpEnabled = isItemSelected && concatGrid.SelectedIndex != 0;
IsDownEnabled = isItemSelected && concatGrid.SelectedIndex != ConcatItems.Count - 1;
IsSaveEnabled = ConcatItems.Count != 0;
}
private void AddButton_Click(object sender, RoutedEventArgs e) {
OpenFileDialog fileDlg = new OpenFileDialog() {
Filter = Res.Strings.FILE_FILTER_ALL,
FilterIndex = 0,
Multiselect = true,
Title = (string)FindResource("str_SelectFileTitle")
};
if (fileDlg.ShowDialog() != true) {
return;
}
try {
foreach (string pathName in fileDlg.FileNames) {
// The names in FileNames appear to be fully qualified.
long length = new FileInfo(pathName).Length;
uint crc32 = CRC32.OnWholeFile(pathName);
ConcatItems.Add(new ConcatItem(pathName, length, crc32));
concatGrid.SelectedIndex = ConcatItems.Count - 1;
}
} catch (Exception ex) {
string caption = (string)FindResource("str_FileAccessFailedCaption");
string fmt = (string)FindResource("str_FileAccessFailedFmt");
MessageBox.Show(string.Format(fmt, ex.Message), caption,
MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void RemoveButton_Click(object sender, RoutedEventArgs e) {
int index = concatGrid.SelectedIndex;
ConcatItems.RemoveAt(index);
// Keep selection at same index, unless we just removed the item at the end.
if (index == ConcatItems.Count) {
index--;
}
if (index >= 0) {
concatGrid.SelectedIndex = index;
}
}
private void UpButton_Click(object sender, RoutedEventArgs e) {
ConcatItem item = (ConcatItem)concatGrid.SelectedItem;
int index = concatGrid.SelectedIndex;
Debug.Assert(index > 0);
ConcatItems.RemoveAt(index);
ConcatItems.Insert(index - 1, item);
concatGrid.SelectedIndex = index - 1;
}
private void DownButton_Click(object sender, RoutedEventArgs e) {
ConcatItem item = (ConcatItem)concatGrid.SelectedItem;
int index = concatGrid.SelectedIndex;
Debug.Assert(index >= 0 && index < ConcatItems.Count - 1);
ConcatItems.RemoveAt(index);
ConcatItems.Insert(index + 1, item);
concatGrid.SelectedIndex = index + 1;
}
private void SaveButton_Click(object sender, RoutedEventArgs e) {
SaveFileDialog fileDlg = new SaveFileDialog() {
Filter = Res.Strings.FILE_FILTER_ALL,
FilterIndex = 0,
ValidateNames = true,
FileName = "concat.bin"
};
if (fileDlg.ShowDialog() != true) {
return;
}
string pathName = Path.GetFullPath(fileDlg.FileName);
Debug.WriteLine("OUTPUT TO " + pathName);
// Create the new file, and copy each file to it in order. We compute a total
// CRC for the file contents as we go. (It's possible to combine the CRCs we already
// have with some math; see e.g. https://stackoverflow.com/a/44061990/294248 .)
uint totalCrc;
long totalLen;
try {
using (FileStream stream = new FileStream(pathName, FileMode.Create)) {
totalCrc = CopyAllFiles(stream);
}
totalLen = new FileInfo(pathName).Length;
} catch (Exception ex) {
string ecaption = (string)FindResource("str_FileAccessFailedCaption");
string efmt = (string)FindResource("str_FileAccessFailedFmt");
MessageBox.Show(string.Format(efmt, ex.Message), ecaption,
MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
// TODO(someday): make all data available on the clipboard
string caption = (string)FindResource("str_SuccessCaption");
string fmt = (string)FindResource("str_SuccessMsgFmt");
MessageBox.Show(string.Format(fmt, totalLen, "0x" + totalCrc.ToString("x8")),
caption, MessageBoxButton.OK, MessageBoxImage.None);
DialogResult = true;
}
private uint CopyAllFiles(Stream outStream) {
byte[] buffer = new byte[256 * 1024];
uint crc32 = 0;
foreach (ConcatItem item in ConcatItems) {
CopyFileToStreamWithCrc32(item.PathName, outStream, buffer, ref crc32);
}
return crc32;
}
/// <summary>
/// Copies a file on disk to a Stream, computing a CRC-32 on the data. Throws an
/// exception on file error.
/// </summary>
/// <param name="inputPath">Full path to input file.</param>
/// <param name="outStream">Output data stream.</param>
/// <param name="buffer">Data buffer, to avoid repeated allocations.</param>
/// <param name="crc">CRC-32, initially zero.</param>
public static void CopyFileToStreamWithCrc32(string inputPath, Stream outStream,
byte[] buffer, ref uint crc) {
using (FileStream inStream = new FileStream(inputPath, FileMode.Open,
FileAccess.Read)) {
while (true) {
int actual = inStream.Read(buffer, 0, buffer.Length);
if (actual == 0) {
// end of stream
return;
}
crc = CRC32.OnBuffer(crc, buffer, 0, actual);
outStream.Write(buffer, 0, actual);
}
}
}
}
}