mirror of
https://github.com/fadden/6502bench.git
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363 lines
14 KiB
C#
363 lines
14 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.IO;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Windows;
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using System.Windows.Media;
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using Microsoft.Win32;
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using Asm65;
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namespace SourceGen.Tools.WpfGui {
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/// <summary>
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/// File slicer tool.
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/// </summary>
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public partial class FileSlicer : Window, INotifyPropertyChanged {
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/// <summary>
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/// Path to file to slice.
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/// </summary>
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private string mPathName;
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/// <summary>
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/// Text formatter.
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/// </summary>
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private Formatter mFormatter;
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/// <summary>
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/// Length of file to slice.
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/// </summary>
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private long mFileLength;
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/// <summary>
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/// Open file.
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/// </summary>
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private FileStream mFileStream;
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private bool mIsSaveEnabled;
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public bool IsSaveEnabled {
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get { return mIsSaveEnabled; }
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set { mIsSaveEnabled = value; OnPropertyChanged(); }
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}
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public string FileLengthStr {
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get { return FormatDecAndHex(mFileLength); }
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}
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// Start/length entry fields and dec+hex display.
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private string mSliceStart;
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public string SliceStart {
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get { return mSliceStart; }
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set { mSliceStart = value; OnPropertyChanged(); UpdateControls(); }
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}
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private string mSliceStartDesc;
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public string SliceStartDesc {
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get { return mSliceStartDesc; }
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set { mSliceStartDesc = value; OnPropertyChanged(); }
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}
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private string mSliceLength;
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public string SliceLength {
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get { return mSliceLength; }
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set { mSliceLength = value; OnPropertyChanged(); UpdateControls(); }
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}
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private string mSliceLengthDesc;
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public string SliceLengthDesc {
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get { return mSliceLengthDesc; }
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set { mSliceLengthDesc = value; OnPropertyChanged(); }
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}
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private string mStartHexDump;
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public string StartHexDump {
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get { return mStartHexDump; }
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set { mStartHexDump = value; OnPropertyChanged(); }
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}
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private string mEndHexDump;
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public string EndHexDump {
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get { return mEndHexDump; }
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set { mEndHexDump = value; OnPropertyChanged(); }
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}
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// Text turns red on error.
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private Brush mSliceStartBrush;
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public Brush SliceStartBrush {
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get { return mSliceStartBrush; }
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set { mSliceStartBrush = value; OnPropertyChanged(); }
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}
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private Brush mSliceLengthBrush;
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public Brush SliceLengthBrush {
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get { return mSliceLengthBrush; }
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set { mSliceLengthBrush = value; OnPropertyChanged(); }
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}
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private Brush mDefaultLabelColor = SystemColors.WindowTextBrush;
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private Brush mErrorLabelColor = Brushes.Red;
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// INotifyPropertyChanged implementation
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public event PropertyChangedEventHandler PropertyChanged;
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private void OnPropertyChanged([CallerMemberName] string propertyName = "") {
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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/// <summary>
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/// Constructor.
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/// </summary>
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public FileSlicer(Window owner, string pathName, Formatter formatter) {
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InitializeComponent();
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Owner = owner;
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DataContext = this;
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mPathName = pathName;
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mFormatter = formatter;
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mFileLength = new FileInfo(pathName).Length;
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mFileStream = new FileStream(pathName, FileMode.Open, FileAccess.Read);
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mSliceStart = mSliceLength = string.Empty;
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UpdateControls();
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}
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private void Window_Closing(object sender, CancelEventArgs e) {
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mFileStream.Close();
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}
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/// <summary>
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/// Formats a value in decimal and hex.
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/// </summary>
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/// <param name="val">Value to format.</param>
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/// <returns>Formatted string.</returns>
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private string FormatDecAndHex(long val) {
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StringBuilder sb = new StringBuilder();
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sb.Append(val.ToString());
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sb.Append(" (");
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sb.Append(mFormatter.FormatHexValue((int)val, 4));
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sb.Append(")");
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return sb.ToString();
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}
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/// <summary>
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/// Updates the state of the controls after something changed.
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/// </summary>
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private void UpdateControls() {
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ParseStartLength(out bool isStartValid, out long sliceStart,
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out bool isLengthValid, out long sliceLength);
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SliceStartDesc = FormatDecAndHex(sliceStart);
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SliceLengthDesc = FormatDecAndHex(sliceLength) +
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(string)FindResource("str_LastByteAt") +
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mFormatter.FormatOffset24((int)(sliceStart + sliceLength - 1));
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if (isStartValid && isLengthValid) {
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// anchor is first byte in slice
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StartHexDump = CreateSplitHexDump(0, sliceStart, sliceStart + sliceLength - 1);
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// anchor is first byte after slice (may be off end)
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EndHexDump = CreateSplitHexDump(sliceStart, sliceStart + sliceLength,
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mFileLength - 1);
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} else {
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StartHexDump = EndHexDump = string.Empty;
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}
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SliceStartBrush = isStartValid ? mDefaultLabelColor : mErrorLabelColor;
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SliceLengthBrush = isLengthValid ? mDefaultLabelColor : mErrorLabelColor;
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IsSaveEnabled = isStartValid && isLengthValid;
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}
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private void ParseStartLength(out bool startOk, out long sliceStart,
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out bool lengthOk, out long sliceLength) {
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startOk = lengthOk = true;
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if (string.IsNullOrEmpty(SliceStart)) {
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sliceStart = 0;
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} else if (Number.TryParseLong(SliceStart.Trim(), out sliceStart, out int unused1)) {
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if (sliceStart < 0 || sliceStart >= mFileLength) {
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startOk = false;
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}
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} else {
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startOk = false;
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}
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if (string.IsNullOrEmpty(SliceLength)) {
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sliceLength = mFileLength - sliceStart;
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if (sliceLength < 0) {
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sliceLength = 0;
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}
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} else if (Number.TryParseLong(SliceLength.Trim(), out sliceLength, out int unused2)) {
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if (sliceLength <= 0 || sliceLength > mFileLength ||
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sliceStart + sliceLength > mFileLength) {
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lengthOk = false;
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}
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} else {
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lengthOk = false;
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}
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}
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/// <summary>
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/// Creates a hex dump with up to 5 lines. Two lines before the anchor point, then
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/// a gap, then two lines that start with the anchor.
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/// </summary>
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/// <param name="minFirst">Earliest position we're allowed to include.</param>
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/// <param name="anchorPos">Anchor point.</param>
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/// <param name="maxLast">Last position we're allowed to show (inclusive end).</param>
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/// <returns>Multi-line formatted string.</returns>
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private string CreateSplitHexDump(long minFirst, long anchorPos, long maxLast) {
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const long AND_16_MASK = ~0x0f;
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Debug.Assert(minFirst <= anchorPos && anchorPos <= maxLast + 1 && minFirst <= maxLast);
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Debug.Assert(minFirst >= 0);
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Debug.Assert(maxLast < mFileLength);
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StringBuilder sb = new StringBuilder(5 * 64);
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byte[] dataBuf = new byte[32];
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// We show two lines of hex dump before the anchor, so we need up to 32 bytes.
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long firstPos = Math.Max(anchorPos - 32, minFirst);
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firstPos = (firstPos + 15) & AND_16_MASK;
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long chunkLen = anchorPos - firstPos;
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mFileStream.Seek(firstPos, SeekOrigin.Begin);
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int actual = mFileStream.Read(dataBuf, 0, dataBuf.Length);
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Debug.Assert(chunkLen <= actual);
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if (chunkLen <= 0) {
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// no pre-anchor data
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sb.AppendLine(string.Empty);
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sb.AppendLine(string.Empty);
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} else {
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long pos = firstPos;
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long lineLen = 16 - (pos & 0x0f);
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if (lineLen >= chunkLen) {
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// top part fits on a single line; do it on the next one
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lineLen = chunkLen;
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sb.AppendLine(string.Empty);
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} else {
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mFormatter.FormatHexDump(dataBuf, (int)(pos - firstPos), (int)pos,
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(int)lineLen, sb);
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sb.Append("\r\n");
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//sb.AppendLine(pos.ToString("x4") + ": " + lineLen);
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pos += lineLen;
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lineLen = chunkLen - lineLen;
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}
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mFormatter.FormatHexDump(dataBuf, (int)(pos - firstPos), (int)pos,
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(int)lineLen, sb);
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sb.Append("\r\n");
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//sb.AppendLine(pos.ToString("x4") + ": " + lineLen);
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}
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sb.AppendLine("------");
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// We show two lines of hex dump with the anchor, so we need up to 31 bytes
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// following it.
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//
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// NOTE: anchorPos is inclusive and represents the first byte contained in the
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// range. If we're doing the hex dump for the end of the file, the value can be
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// one greater than maxLast if the pre-anchor range runs to EOF.
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long lastPos = ((anchorPos + 32) & AND_16_MASK) - 1; // inclusive end
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lastPos = Math.Min(lastPos, maxLast);
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chunkLen = lastPos - anchorPos + 1;
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mFileStream.Seek(anchorPos, SeekOrigin.Begin);
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actual = mFileStream.Read(dataBuf, 0, dataBuf.Length);
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Debug.Assert(chunkLen <= actual);
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if (chunkLen <= 0) {
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// anchor not visible
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sb.AppendLine(string.Empty);
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sb.AppendLine(string.Empty);
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} else {
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long pos = anchorPos;
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long lineLen = 16 - (pos & 0x0f);
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if (lineLen > chunkLen) {
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lineLen = chunkLen;
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}
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mFormatter.FormatHexDump(dataBuf, (int)(pos - anchorPos), (int)pos,
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(int)lineLen, sb);
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sb.Append("\r\n");
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//sb.AppendLine(pos.ToString("x4") + ": " + lineLen);
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pos += lineLen;
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lineLen = chunkLen - lineLen;
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if (lineLen <= 0) {
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sb.AppendLine(string.Empty);
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} else {
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mFormatter.FormatHexDump(dataBuf, (int)(pos - anchorPos), (int)pos,
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(int)lineLen, sb);
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sb.Append("\r\n");
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//sb.AppendLine(pos.ToString("x4") + ": " + lineLen);
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}
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}
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return sb.ToString();
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}
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private void SaveButton_Click(object sender, RoutedEventArgs e) {
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SaveFileDialog fileDlg = new SaveFileDialog() {
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Filter = Res.Strings.FILE_FILTER_ALL,
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FilterIndex = 0,
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ValidateNames = true,
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FileName = "slice.bin"
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};
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if (fileDlg.ShowDialog() != true) {
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return;
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}
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string pathName = Path.GetFullPath(fileDlg.FileName);
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Debug.WriteLine("OUTPUT TO " + pathName);
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try {
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ParseStartLength(out bool startOk, out long sliceStart,
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out bool lengthOk, out long sliceLength);
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if (!(startOk && lengthOk)) {
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throw new Exception("Internal error: start/length invalid");
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}
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using (FileStream outStream = new FileStream(pathName, FileMode.Create)) {
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mFileStream.Seek(sliceStart, SeekOrigin.Begin);
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CopyStreamToStream(mFileStream, outStream, sliceLength);
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}
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} catch (Exception ex) {
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string ecaption = (string)FindResource("str_FileAccessFailedCaption");
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string efmt = (string)FindResource("str_FileAccessFailedFmt");
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MessageBox.Show(string.Format(efmt, ex.Message), ecaption,
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MessageBoxButton.OK, MessageBoxImage.Error);
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return;
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}
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string caption = (string)FindResource("str_SuccessCaption");
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string msg = (string)FindResource("str_SuccessMsg");
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MessageBox.Show(msg, caption, MessageBoxButton.OK, MessageBoxImage.None);
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}
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private static void CopyStreamToStream(Stream inStream, Stream outStream, long length) {
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byte[] buffer = new byte[256 * 1024];
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while (length > 0) {
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int getLen = (int)Math.Min(length, buffer.Length);
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int actual = inStream.Read(buffer, 0, getLen);
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if (actual != getLen) {
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throw new IOException("Read failed: requested " + getLen + ", got " + actual);
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}
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outStream.Write(buffer, 0, getLen);
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length -= getLen;
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}
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}
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}
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}
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