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[backend/core] Add CollapseWhitespace rewrite policy (ISH-625)

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Laura Hausmann 2025-01-08 12:16:22 +01:00
parent 62493dbe19
commit 873b48e2f8
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1 changed files with 51 additions and 0 deletions
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Iceshrimp.Backend/Core/Policies/CollapseWhitespaceRewritePolicy.cs Normal file
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using System.Text.RegularExpressions;
using Iceshrimp.Backend.Core.Database.Tables;
using Iceshrimp.Backend.Core.Federation.ActivityStreams.Types;
using Iceshrimp.Backend.Core.Services;
using Iceshrimp.MfmSharp;
namespace Iceshrimp.Backend.Core.Policies;
public partial class CollapseWhitespaceRewritePolicy(
bool enabled,
int priority
) : IRewritePolicy
{
public string Name => nameof(CollapseWhitespaceRewritePolicy);
public bool Enabled => enabled;
public int Priority => priority;
public IRewritePolicy.HookLocationEnum HookLocation => IRewritePolicy.HookLocationEnum.PostLogic;
[GeneratedRegex(" +")] private static partial Regex WhitespaceRegex { get; }
public void Apply(NoteService.NoteCreationData data)
{
if (data.Text == null || !IsApplicable(data)) return;
data.Text = WhitespaceRegex.Replace(data.Text, " ");
data.ParsedText = MfmParser.Parse(data.Text);
}
public void Apply(NoteService.NoteUpdateData data)
{
if (data.Text == null || !IsApplicable(data)) return;
data.Text = WhitespaceRegex.Replace(data.Text, " ");
data.ParsedText = MfmParser.Parse(data.Text);
}
public void Apply(ASNote note, User actor) { }
private static bool IsApplicable(NoteService.NoteCreationData data)
=> data.Text != null && data.Text.Contains(" ") && !data.Text.Contains("$[");
private static bool IsApplicable(NoteService.NoteUpdateData data)
=> data.Text != null && data.Text.Contains(" ") && !data.Text.Contains("$[");
}
public class CollapseWhitespaceRewritePolicyConfiguration : IPolicyConfiguration<CollapseWhitespaceRewritePolicy>
{
public CollapseWhitespaceRewritePolicy Apply() => new(Enabled, Priority);
IPolicy IPolicyConfiguration. Apply() => Apply();
public bool Enabled { get; set; }
public int Priority { get; set; }
}