116 lines
3.5 KiB
C#
116 lines
3.5 KiB
C#
using System.Diagnostics;
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using System.Text.RegularExpressions;
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namespace ChromeboxFanControl;
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public sealed class EctoolRunner
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{
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private static readonly Regex NumberRegex = new(@"\d+", RegexOptions.Compiled);
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public static (bool ok, string stdout, string stderr) RunSync(
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string exePath,
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IReadOnlyList<string> args,
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int timeoutMs = 15_000) =>
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RunAsync(exePath, args, CancellationToken.None, timeoutMs).GetAwaiter().GetResult();
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public static async Task<(bool ok, string stdout, string stderr)> RunAsync(
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string exePath,
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IReadOnlyList<string> args,
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CancellationToken ct = default,
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int timeoutMs = 15_000)
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{
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if (string.IsNullOrWhiteSpace(exePath) || !File.Exists(exePath))
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return (false, "", "ectool executable not found.");
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var psi = new ProcessStartInfo
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{
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FileName = exePath,
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UseShellExecute = false,
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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CreateNoWindow = true,
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};
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foreach (var a in args)
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psi.ArgumentList.Add(a);
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using var proc = new Process { StartInfo = psi };
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try
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{
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proc.Start();
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}
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catch (Exception ex)
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{
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return (false, "", ex.Message);
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}
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var stdoutTask = proc.StandardOutput.ReadToEndAsync(ct);
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var stderrTask = proc.StandardError.ReadToEndAsync(ct);
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var waitTask = proc.WaitForExitAsync(ct);
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var completed = await Task.WhenAny(waitTask, Task.Delay(timeoutMs, ct)).ConfigureAwait(false);
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if (completed != waitTask)
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{
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try
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{
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proc.Kill(entireProcessTree: true);
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}
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catch
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{
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/* ignore */
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}
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return (false, "", "ectool timed out.");
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}
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await waitTask.ConfigureAwait(false);
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var stdout = await stdoutTask.ConfigureAwait(false);
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var stderr = await stderrTask.ConfigureAwait(false);
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var ok = proc.ExitCode == 0;
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return (ok, stdout, stderr);
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}
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/// <summary>Pick the most plausible RPM (typically 500–20000) from ectool text output.</summary>
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public static int? TryParseFanRpm(string stdout)
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{
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if (string.IsNullOrWhiteSpace(stdout))
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return null;
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int? best = null;
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foreach (Match m in NumberRegex.Matches(stdout))
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{
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if (!int.TryParse(m.Value, out var n))
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continue;
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if (n is < 400 or > 50_000)
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continue;
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// Prefer larger numbers in typical fan range (avoid fan index "0")
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if (n >= 800 && (best == null || n > best))
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best = n;
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}
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if (best != null)
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return best;
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foreach (Match m in NumberRegex.Matches(stdout))
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{
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if (int.TryParse(m.Value, out var n) && n is >= 0 and <= 50_000)
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return n;
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}
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return null;
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}
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/// <summary>Pick duty percent (0-100) from ectool text output.</summary>
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public static int? TryParseFanDuty(string stdout)
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{
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if (string.IsNullOrWhiteSpace(stdout))
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return null;
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foreach (Match m in NumberRegex.Matches(stdout))
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{
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if (int.TryParse(m.Value, out var n) && n is >= 0 and <= 100)
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return n;
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}
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return null;
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}
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}
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