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 +1,132 @@
+namespace PdfSharpCore.Pdf.Advanced
+{
+    /// <summary>
+    /// Represent a file stream embedded in the PDF document
+    /// </summary>
+    public class PdfEmbeddedFile : PdfDictionary
+    {
+        private readonly PdfDictionary paramsDictionary;
+
+        public PdfEmbeddedFile(PdfDocument document)
+          : base(document)
+        {
+            this.paramsDictionary = new PdfDictionary();
+
+            Elements.SetName(Keys.Type, "/EmbeddedFile");
+            Elements.SetObject(Keys.Params, paramsDictionary);
+        }
+
+        public PdfEmbeddedFile(PdfDocument document, byte[] bytes, string checksum = null) 
+            : this(document)
+        {
+            this.CreateStreamAndSetProperties(bytes, checksum);
+        }
+
+        public void CreateStreamAndSetProperties(byte[] bytes, string checksum = null)
+        {
+            this.CreateStream(bytes);
+
+            this.paramsDictionary.Elements.SetInteger(Keys.Size, bytes.Length);
+
+            if (string.IsNullOrEmpty(checksum))
+                this.paramsDictionary.Elements.Remove(Keys.CheckSum);
+            else
+                this.paramsDictionary.Elements.SetString(Keys.CheckSum, checksum);
+        }
+
+        public string MimeType
+        {
+            get { return Elements.GetName(Keys.Subtype); }
+            set { Elements.SetName(Keys.Subtype, value); }
+        }        
+
+        // TODO : Add properties for the subdictionnary Params and the subsubdictionnary Mac
+
+        /// <summary>
+        /// Predefined keys of this embedded file.
+        /// </summary>
+        public class Keys : PdfDictionary.PdfStream.Keys
+        {
+            /// <summary>
+            /// (Optional) The type of PDF object that this dictionary describes; if present, 
+            /// must be EmbeddedFile for an embedded file stream.
+            /// </summary>
+            [KeyInfo(KeyType.Name | KeyType.Optional, FixedValue = "EmbeddedFile")]
+            public const string Type = "/Type";
+
+            /// <summary>
+            /// (Optional) The subtype of the embedded file. The value of this entry must be a 
+            /// first-class name, as defined in Appendix E. Names without a registered prefix 
+            /// must conform to the MIME media type names defined in Internet RFC 2046, 
+            /// Multipurpose Internet Mail Extensions (MIME), Part Two: Media Types(see the 
+            /// Bibliography), with the provision that characters not allowed in names must 
+            /// use the 2-character hexadecimal code format described in Section 3.2.4, 
+            /// “Name Objects.”
+            /// </summary>
+            [KeyInfo(KeyType.Name | KeyType.Optional)]
+            public const string Subtype = "/Subtype";
+
+            /// <summary>
+            /// (Optional) An embedded file parameter dictionary containing additional, 
+            /// file-specific information (see Table 3.43).
+            /// </summary>
+            [KeyInfo(KeyType.Dictionary | KeyType.Optional)]
+            public const string Params = "/Params";
+
+            /// <summary>
+            /// (Optional) The size of the embedded file, in bytes.
+            /// </summary>
+            [KeyInfo(KeyType.Integer | KeyType.Optional)]
+            public const string Size = "/Size";
+
+            /// <summary>
+            /// (Optional) The date and time when the embedded file was created.
+            /// </summary>
+            [KeyInfo(KeyType.Date | KeyType.Optional)]
+            public const string CreationDate = "/CreationDate";
+
+            /// <summary>
+            /// (Optional) The date and time when the embedded file was last modified.
+            /// </summary>
+            [KeyInfo(KeyType.Date | KeyType.Optional)]
+            public const string ModDate = "/ModDate";
+
+            /// <summary>
+            /// (Optional) A subdictionary containing additional information specific to Mac OS files (see Table 3.44).
+            /// </summary>
+            [KeyInfo(KeyType.Dictionary | KeyType.Optional)]
+            public const string Mac = "/Mac";
+
+            /// <summary>
+            /// (Optional) A 16-byte string that is the checksum of the bytes of the uncompressed 
+            /// embedded file. The checksum is calculated by applying the standard MD5 message-digest 
+            /// algorithm (described in Internet RFC 1321, The MD5 Message-Digest Algorithm; see the 
+            /// Bibliography) to the bytes of the embedded file stream.
+            /// </summary>
+            [KeyInfo(KeyType.Dictionary | KeyType.Optional)]
+            public const string CheckSum = "/CheckSum";
+
+            /// <summary>
+            /// Gets the KeysMeta for these keys.
+            /// </summary>
+            internal static DictionaryMeta Meta
+            {
+                get
+                {
+                    if (Keys.meta == null)
+                        Keys.meta = CreateMeta(typeof(Keys));
+                    return Keys.meta;
+                }
+            }
+            static DictionaryMeta meta;
+        }
+
+        /// <summary>
+        /// Gets the KeysMeta of this dictionary type.
+        /// </summary>
+        internal override DictionaryMeta Meta
+        {
+            get { return Keys.Meta; }
+        }
+    }
+}