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

third_party/PdfSharpCore/Pdf/PdfNameObject.cs

@@ -0,0 +1,151 @@
+#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.Diagnostics;
+using PdfSharpCore.Pdf.IO;
+
+namespace PdfSharpCore.Pdf
+{
+    /// <summary>
+    /// Represents an indirect name value. This type is not used by PdfSharpCore. If it is imported from
+    /// an external PDF file, the value is converted into a direct object. Acrobat sometime uses indirect
+    /// names to save space, because an indirect reference to a name may be shorter than a long name.
+    /// </summary>
+    [DebuggerDisplay("({Value})")]
+    public sealed class PdfNameObject : PdfObject
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PdfNameObject"/> class.
+        /// </summary>
+        public PdfNameObject()
+        {
+            _value = "/";  // Empty name.
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PdfNameObject"/> class.
+        /// </summary>
+        /// <param name="document">The document.</param>
+        /// <param name="value">The value.</param>
+        public PdfNameObject(PdfDocument document, string value)
+            : base(document)
+        {
+            if (value == null)
+                throw new ArgumentNullException("value");
+            if (value.Length == 0 || value[0] != '/')
+                throw new ArgumentException(PSSR.NameMustStartWithSlash);
+
+            _value = value;
+        }
+
+        /// <summary>
+        /// Determines whether the specified object is equal to the current object.
+        /// </summary>
+        public override bool Equals(object obj)
+        {
+            return _value.Equals(obj);
+        }
+
+        /// <summary>
+        /// Serves as a hash function for this type.
+        /// </summary>
+        public override int GetHashCode()
+        {
+            return _value.GetHashCode();
+        }
+
+        /// <summary>
+        /// Gets or sets the name value.
+        /// </summary>
+        public string Value
+        {
+            get { return _value; }
+            set { _value = value; }
+        }
+        string _value;
+
+        /// <summary>
+        /// Returns the name. The string always begins with a slash.
+        /// </summary>
+        public override string ToString()
+        {
+            // TODO: Encode characters.
+            return _value;
+        }
+
+        /// <summary>
+        /// Determines whether a name is equal to a string.
+        /// </summary>
+        public static bool operator ==(PdfNameObject name, string str)
+        {
+            return name._value == str;
+        }
+
+        /// <summary>
+        /// Determines whether a name is not equal to a string.
+        /// </summary>
+        public static bool operator !=(PdfNameObject name, string str)
+        {
+            return name._value != str;
+        }
+
+#if leads_to_ambiguity
+        public static bool operator ==(string str, PdfName name)
+        {
+            return str == name.value;
+        }
+
+        public static bool operator !=(string str, PdfName name)
+        {
+            return str == name.value;
+        }
+
+        public static bool operator ==(PdfName name1, PdfName name2)
+        {
+            return name1.value == name2.value;
+        }
+
+        public static bool operator !=(PdfName name1, PdfName name2)
+        {
+            return name1.value != name2.value;
+        }
+#endif
+
+        /// <summary>
+        /// Writes the name including the leading slash.
+        /// </summary>
+        internal override void WriteObject(PdfWriter writer)
+        {
+            writer.WriteBeginObject(this);
+            writer.Write(new PdfName(_value));
+            writer.WriteEndObject();
+        }
+    }
+}