Use ansi escape code to indicate download progress in taskbar
Pavel Djundik
1 year ago
parent
ae72ac03c9
commit
ccbffd1c08
@ -0,0 +1,51 @@
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using System;
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using Spectre.Console;
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namespace DepotDownloader;
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static class Ansi
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{
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// https://conemu.github.io/en/AnsiEscapeCodes.html#ConEmu_specific_OSC
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// https://learn.microsoft.com/en-us/windows/terminal/tutorials/progress-bar-sequences
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public enum ProgressState
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{
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Hidden = 0,
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Default = 1,
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Error = 2,
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Indeterminate = 3,
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Warning = 4,
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}
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const char ESC = (char)0x1B;
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const char BEL = (char)0x07;
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private static bool useProgress;
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public static void Init()
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{
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if (Console.IsInputRedirected || Console.IsOutputRedirected)
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{
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return;
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}
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var (supportsAnsi, legacyConsole) = AnsiDetector.Detect(stdError: false, upgrade: true);
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useProgress = supportsAnsi && !legacyConsole;
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}
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public static void Progress(ulong downloaded, ulong total)
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{
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var progress = (byte)MathF.Round(downloaded / (float)total * 100.0f);
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Progress(ProgressState.Default, progress);
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}
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public static void Progress(ProgressState state, byte progress = 0)
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{
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if (!useProgress)
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{
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return;
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}
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Console.Write($"{ESC}]9;4;{(byte)state};{progress}{BEL}");
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}
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}
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@ -0,0 +1,134 @@
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// Copied from https://github.com/spectreconsole/spectre.console/blob/d79e6adc5f8e637fb35c88f987023ffda6707243/src/Spectre.Console/Internal/Backends/Ansi/AnsiDetector.cs
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// MIT License - Copyright(c) 2020 Patrik Svensson, Phil Scott, Nils Andresen
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// which is partially based on https://github.com/keqingrong/supports-ansi/blob/master/index.js
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// <auto-generated/>
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using System;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text.RegularExpressions;
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namespace Spectre.Console;
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internal static class AnsiDetector
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{
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private static readonly Regex[] _regexes =
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[
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new("^xterm"), // xterm, PuTTY, Mintty
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new("^rxvt"), // RXVT
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new("^eterm"), // Eterm
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new("^screen"), // GNU screen, tmux
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new("tmux"), // tmux
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new("^vt100"), // DEC VT series
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new("^vt102"), // DEC VT series
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new("^vt220"), // DEC VT series
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new("^vt320"), // DEC VT series
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new("ansi"), // ANSI
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new("scoansi"), // SCO ANSI
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new("cygwin"), // Cygwin, MinGW
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new("linux"), // Linux console
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new("konsole"), // Konsole
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new("bvterm"), // Bitvise SSH Client
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new("^st-256color"), // Suckless Simple Terminal, st
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new("alacritty"), // Alacritty
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];
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public static (bool SupportsAnsi, bool LegacyConsole) Detect(bool stdError, bool upgrade)
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{
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// Running on Windows?
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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// Running under ConEmu?
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var conEmu = Environment.GetEnvironmentVariable("ConEmuANSI");
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if (!string.IsNullOrEmpty(conEmu) && conEmu.Equals("On", StringComparison.OrdinalIgnoreCase))
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{
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return (true, false);
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}
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var supportsAnsi = Windows.SupportsAnsi(upgrade, stdError, out var legacyConsole);
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return (supportsAnsi, legacyConsole);
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}
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return DetectFromTerm();
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}
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private static (bool SupportsAnsi, bool LegacyConsole) DetectFromTerm()
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{
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// Check if the terminal is of type ANSI/VT100/xterm compatible.
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var term = Environment.GetEnvironmentVariable("TERM");
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if (!string.IsNullOrWhiteSpace(term))
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{
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if (_regexes.Any(regex => regex.IsMatch(term)))
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{
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return (true, false);
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}
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}
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return (false, true);
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}
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private static class Windows
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{
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private const int STD_OUTPUT_HANDLE = -11;
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private const int STD_ERROR_HANDLE = -12;
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private const uint ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004;
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private const uint DISABLE_NEWLINE_AUTO_RETURN = 0x0008;
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[DllImport("kernel32.dll")]
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private static extern bool GetConsoleMode(IntPtr hConsoleHandle, out uint lpMode);
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[DllImport("kernel32.dll")]
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private static extern bool SetConsoleMode(IntPtr hConsoleHandle, uint dwMode);
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[DllImport("kernel32.dll", SetLastError = true)]
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private static extern IntPtr GetStdHandle(int nStdHandle);
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[DllImport("kernel32.dll")]
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public static extern uint GetLastError();
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public static bool SupportsAnsi(bool upgrade, bool stdError, out bool isLegacy)
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{
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isLegacy = false;
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try
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{
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var @out = GetStdHandle(stdError ? STD_ERROR_HANDLE : STD_OUTPUT_HANDLE);
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if (!GetConsoleMode(@out, out var mode))
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{
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// Could not get console mode, try TERM (set in cygwin, WSL-Shell).
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var (ansiFromTerm, legacyFromTerm) = DetectFromTerm();
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isLegacy = ansiFromTerm ? legacyFromTerm : isLegacy;
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return ansiFromTerm;
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}
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if ((mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0)
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{
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isLegacy = true;
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if (!upgrade)
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{
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return false;
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}
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// Try enable ANSI support.
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mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING | DISABLE_NEWLINE_AUTO_RETURN;
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if (!SetConsoleMode(@out, mode))
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{
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// Enabling failed.
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return false;
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}
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isLegacy = false;
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}
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return true;
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}
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catch
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{
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// All we know here is that we don't support ANSI.
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return false;
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}
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}
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}
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}
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