Sicherung
This commit is contained in:
Maier Stephan SI
233
Kalk/Kalk.Core/Model/KalkConsoleKey.cs
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233
Kalk/Kalk.Core/Model/KalkConsoleKey.cs
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using Scriban.Runtime;
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namespace Kalk.Core
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{
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public readonly struct KalkConsoleKey : IEquatable<KalkConsoleKey>
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{
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// Maps of name to ConsoleKey
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private static readonly Dictionary<string, ConsoleKey> MapNameToConsoleKey = new Dictionary<string, ConsoleKey>(StringComparer.OrdinalIgnoreCase);
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// Maps of ConsoleKey to name
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private static readonly Dictionary<ConsoleKey, string> MapConsoleKeyToName = new Dictionary<ConsoleKey, string>();
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static KalkConsoleKey()
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{
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var names = Enum.GetNames<ConsoleKey>();
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var values = Enum.GetValues<ConsoleKey>();
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for (var i = 0; i < names.Length; i++)
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{
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var name = StandardMemberRenamer.Rename(names[i]);
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var key = values[i];
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if (key >= ConsoleKey.D0 && key <= ConsoleKey.D9)
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{
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name = ('0' + (key - ConsoleKey.D0)).ToString(CultureInfo.InvariantCulture);
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}
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MapKey(name, key);
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}
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MapKey("left", ConsoleKey.LeftArrow);
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MapKey("right", ConsoleKey.RightArrow);
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MapKey("up", ConsoleKey.UpArrow);
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MapKey("down", ConsoleKey.DownArrow);
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}
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private static void MapKey(string name, ConsoleKey key)
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{
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MapNameToConsoleKey.Add(name, key);
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MapConsoleKeyToName[key] = name;
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}
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public KalkConsoleKey(ConsoleModifiers modifiers, ConsoleKey key, char keyChar)
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{
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Modifiers = modifiers;
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Key = key;
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// Normalize keychar, whenever there is a modifier, we don't store the character
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if (modifiers == ConsoleModifiers.Shift && key >= ConsoleKey.A && key <= ConsoleKey.Z)
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{
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Modifiers = 0;
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KeyChar = keyChar;
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}
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else
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{
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// We need to force char to 0 when backspace, as it is not consistent between Windows and macOS/Linux
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KeyChar = Modifiers != 0 || key == ConsoleKey.Backspace ? (char)0 : keyChar;
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}
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}
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public ConsoleModifiers Modifiers { get; }
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public ConsoleKey Key { get; }
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public char KeyChar { get; }
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public bool Equals(KalkConsoleKey other)
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{
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return Key == other.Key &&
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KeyChar == other.KeyChar &&
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Modifiers == other.Modifiers;
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}
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public override bool Equals(object obj)
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{
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return obj is KalkConsoleKey other && Equals(other);
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}
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public override int GetHashCode()
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{
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var hashCode = (int)Modifiers;
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hashCode = (hashCode * 397) ^ (int) Key;
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hashCode = (hashCode * 397) ^ (int) KeyChar;
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return hashCode;
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}
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public static bool operator ==(KalkConsoleKey left, KalkConsoleKey right)
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{
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return left.Equals(right);
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}
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public static bool operator !=(KalkConsoleKey left, KalkConsoleKey right)
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{
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return !left.Equals(right);
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}
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public static KalkConsoleKey Parse(string keyText)
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{
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if (keyText == null) throw new ArgumentNullException(nameof(keyText));
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ConsoleModifiers modifiers = 0;
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ConsoleKey key = 0;
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char keyChar = (char)0;
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int index = 0;
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bool expectingPlus = false;
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while (index < keyText.Length)
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{
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if (expectingPlus)
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{
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if (keyText[index] != '+')
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{
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throw new ArgumentException($"Unexpected character `{keyText[index]}`. Expecting a + between keys.", nameof(keyText));
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}
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index++;
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expectingPlus = false;
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}
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else
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{
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if (string.Compare(keyText, index, "CTRL", 0, "CTRL".Length, true) == 0)
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{
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if ((modifiers & ConsoleModifiers.Control) != 0) throw new ArgumentException("Cannot have multiple CTRL keys in a shortcut.", nameof(keyText));
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modifiers |= ConsoleModifiers.Control;
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index += "CTRL".Length;
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expectingPlus = true;
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}
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else if (string.Compare(keyText, index, "ALT", 0, "ALT".Length, true) == 0)
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{
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if ((modifiers & ConsoleModifiers.Alt) != 0) throw new ArgumentException("Cannot have multiple ALT keys in a shortcut.", nameof(keyText));
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modifiers |= ConsoleModifiers.Alt;
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index += "ALT".Length;
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expectingPlus = true;
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}
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else if (string.Compare(keyText, index, "SHIFT", 0, "SHIFT".Length, true) == 0)
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{
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// Skip the shift but don't expect it's modifiers
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index += "SHIFT".Length;
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expectingPlus = true;
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}
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else
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{
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var remainingText = keyText.Substring(index);
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expectingPlus = false;
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if (!MapNameToConsoleKey.TryGetValue(remainingText, out key))
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{
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throw new ArgumentException($"Invalid key found `{remainingText}`. Expecting: {string.Join(", ", Enum.GetNames(typeof(ConsoleKey)))}.", nameof(keyText));
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}
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if (key >= ConsoleKey.D0 && key <= ConsoleKey.D9)
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{
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keyChar = (char) ('0' + (int) key - (int) ConsoleKey.D0);
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}
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else if (key >= ConsoleKey.A && key <= ConsoleKey.Z)
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{
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keyChar = remainingText[0];
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}
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else
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{
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keyChar = key switch
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{
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ConsoleKey.Add => '+',
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ConsoleKey.Attention => '!',
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ConsoleKey.Divide => '/',
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ConsoleKey.Multiply => '*',
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ConsoleKey.Subtract => '-',
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ConsoleKey.OemPlus => '=',
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ConsoleKey.OemMinus => '-',
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ConsoleKey.OemPeriod => ';',
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ConsoleKey.OemComma => ',',
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ConsoleKey.Tab => '\t',
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ConsoleKey.Enter => '\r',
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ConsoleKey.Spacebar => ' ',
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ConsoleKey.Backspace => (char)0,
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ConsoleKey.Escape => (char) 0x1b,
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_ => keyChar
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};
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}
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break;
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}
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}
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}
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return new KalkConsoleKey(modifiers, key, keyChar);
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}
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public override string ToString()
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{
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var builder = new StringBuilder();
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var modifiers = Modifiers;
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if ((modifiers & ConsoleModifiers.Control) != 0)
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{
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builder.Append("ctrl");
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}
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if ((modifiers & ConsoleModifiers.Alt) != 0)
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{
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if (builder.Length > 0) builder.Append('+');
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builder.Append("alt");
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}
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if ((modifiers & ConsoleModifiers.Shift) != 0)
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{
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if (builder.Length > 0) builder.Append('+');
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builder.Append("shift");
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}
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if (builder.Length > 0)
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{
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builder.Append('+');
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}
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if (Key >= ConsoleKey.A && Key <= ConsoleKey.Z && KeyChar != 0)
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{
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builder.Append(KeyChar);
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}
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else
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{
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builder.Append(MapConsoleKeyToName[Key]);
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}
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return builder.ToString();
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}
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public static implicit operator KalkConsoleKey(ConsoleKeyInfo keyInfo)
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{
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return new KalkConsoleKey(keyInfo.Modifiers, keyInfo.Key, keyInfo.KeyChar);
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}
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public static implicit operator ConsoleKeyInfo(KalkConsoleKey key)
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{
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return new ConsoleKeyInfo(key.KeyChar, key.Key, (key.Modifiers & ConsoleModifiers.Shift) != 0, (key.Modifiers & ConsoleModifiers.Alt) != 0, (key.Modifiers & ConsoleModifiers.Control) != 0);
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}
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}
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}
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