vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF

2026-08-27 06:58:22 +02:00
commit 532485a830
577 changed files with 149058 additions and 0 deletions
@@ -0,0 +1,55 @@
+using System.Text.Json;
+
+namespace KillerPDF.Services
+{
+    internal sealed class SignatureStore
+    {
+        private readonly string _dir;
+        private readonly string _file;
+
+        private static readonly string DefaultDir  = System.IO.Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "KillerPDF");
+
+        public SignatureStore()
+            : this(DefaultDir, System.IO.Path.Combine(DefaultDir, "signatures.json")) { }
+
+        internal SignatureStore(string dir, string file)
+        {
+            _dir  = dir;
+            _file = file;
+        }
+
+        private List<SavedSignature> _items = [];
+
+        public IReadOnlyList<SavedSignature> Signatures => _items;
+
+        public void Load()
+        {
+            try
+            {
+                if (System.IO.File.Exists(_file))
+                {
+                    var json = System.IO.File.ReadAllText(_file);
+                    _items = JsonSerializer.Deserialize<List<SavedSignature>>(json) ?? [];
+                }
+            }
+            catch { _items = []; }
+        }
+
+        public void Persist()
+        {
+            try
+            {
+                System.IO.Directory.CreateDirectory(_dir);
+                var json = JsonSerializer.Serialize(_items, new JsonSerializerOptions { WriteIndented = true });
+                System.IO.File.WriteAllText(_file, json);
+            }
+            catch { /* best effort */ }
+        }
+
+        public void Add(SavedSignature sig) => _items.Add(sig);
+
+        public void Remove(SavedSignature sig) => _items.Remove(sig);
+    }
+}