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
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+#region PDFsharp - A .NET library for processing PDF
+//
+// Authors:
+//   Stefan Lange
+//
+// Copyright (c) 2005-2016 empira Software GmbH, Cologne Area (Germany)
+//
+// http://www.PdfSharp.com
+// http://sourceforge.net/projects/pdfsharp
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+// DEALINGS IN THE SOFTWARE.
+#endregion
+
+using System;
+using System.Globalization;
+using PdfSharpCore.Pdf.Content;
+using PdfSharpCore.Pdf.IO;
+
+namespace PdfSharpCore.Internal
+{
+    enum NotImplementedBehaviour
+    {
+        DoNothing, Log, Throw
+    }
+
+    /// <summary>
+    /// A bunch of internal helper functions.
+    /// </summary>
+    internal static class Diagnostics
+    {
+        public static NotImplementedBehaviour NotImplementedBehaviour
+        {
+            get { return _notImplementedBehaviour; }
+            set { _notImplementedBehaviour = value; }
+        }
+        static NotImplementedBehaviour _notImplementedBehaviour;
+    }
+
+    internal static class ParserDiagnostics
+    {
+        public static void ThrowParserException(string message)
+        {
+            throw new PdfReaderException(message);
+        }
+
+        public static void ThrowParserException(string message, Exception innerException)
+        {
+            throw new PdfReaderException(message, innerException);
+        }
+
+        public static void HandleUnexpectedCharacter(char ch)
+        {
+            // Hex formatting does not work with type char. It must be casted to integer.
+            string message = string.Format(CultureInfo.InvariantCulture,
+                "Unexpected character '0x{0:x4}' in PDF stream. The file may be corrupted. " +
+                "If you think this is a bug in PDFsharp, please send us your PDF file.", (int)ch);
+            ThrowParserException(message);
+        }
+        public static void HandleUnexpectedToken(string token)
+        {
+            string message = string.Format(CultureInfo.InvariantCulture,
+                "Unexpected token '{0}' in PDF stream. The file may be corrupted. " +
+                "If you think this is a bug in PDFsharp, please send us your PDF file.", token);
+            ThrowParserException(message);
+        }
+    }
+
+    internal static class ContentReaderDiagnostics
+    {
+        public static void ThrowContentReaderException(string message)
+        {
+            throw new ContentReaderException(message);
+        }
+
+        public static void ThrowContentReaderException(string message, Exception innerException)
+        {
+            throw new ContentReaderException(message, innerException);
+        }
+
+        public static void ThrowNumberOutOfIntegerRange(long value)
+        {
+            string message = string.Format(CultureInfo.InvariantCulture, "Number '{0}' out of integer range.", value);
+            ThrowContentReaderException(message);
+        }
+
+        public static void HandleUnexpectedCharacter(char ch)
+        {
+            string message = string.Format(CultureInfo.InvariantCulture,
+                "Unexpected character '0x{0:x4}' in content stream. The stream may be corrupted or the feature is not implemented. " +
+                "If you think this is a bug in PDFsharp, please send us your PDF file.", ch);
+            ThrowContentReaderException(message);
+        }
+    }
+}