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Scripts/TaglibSharp/IIM/IIMReader.cs

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+//
+//  IIMReader.cs
+//
+//  Author:
+//       Eberhard Beilharz <eb1@sil.org>
+//
+//  Copyright (c) 2012 Eberhard Beilharz
+//
+//  This library is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as
+//  published by the Free Software Foundation; either version 2.1 of the
+//  License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful, but
+//  WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+namespace TagLib.IIM
+{
+	/// <summary>
+	/// Processes all IPTC-IIM segments
+	/// </summary>
+	public class IIMReader
+	{
+		/// <summary>
+		/// The magic bytes that start a new IPTC-IIM segment
+		/// </summary>
+		static readonly byte[] IPTC_IIM_SEGMENT = { 0x1C, 0x02 };
+
+		IIMTag Tag { get; set; }
+		ByteVector Data { get; set; }
+
+		/// <summary>
+		/// Constructor
+		/// </summary>
+		/// <param name="data">Bytes contained in the reader</param>
+		public IIMReader (ByteVector data)
+		{
+			Data = data;
+			Tag = new IIMTag ();
+		}
+
+		/// <summary>
+		/// Proceed with the reading of the IIM
+		/// </summary>
+		/// <returns></returns>
+		public IIMTag Process ()
+		{
+			// now process the IIM segments which all start with 0x1C 0x02 followed by the type
+			// of the IIM segment
+			int findOffset = 0;
+			int count = 0;
+			for (int i = Data.Find (IPTC_IIM_SEGMENT, findOffset); i >= findOffset; i = Data.Find (IPTC_IIM_SEGMENT, findOffset)) {
+				count++;
+				// skip over segment marker
+				i += IPTC_IIM_SEGMENT.Length;
+
+				int len = Data.Mid (i + 1).ToUShort ();
+
+				// ENHANCE: enhance encoding used for string conversion. Unfortunately this is
+				// not detectable from IIM data.
+				switch (Data[i]) {
+				case 5: // Object Name
+					Tag.Title = Data.ToString (StringType.Latin1, i + 3, len);
+					break;
+				case 25: // Keywords
+					Tag.AddKeyword (Data.ToString (StringType.Latin1, i + 3, len));
+					break;
+				case 80: // By-line
+					Tag.Creator = Data.ToString (StringType.Latin1, i + 3, len);
+					break;
+				case 116: // Copyright notice
+					Tag.Copyright = Data.ToString (StringType.Latin1, i + 3, len);
+					break;
+				case 120: // Caption/Abstract
+					Tag.Comment = Data.ToString (StringType.Latin1, i + 3, len);
+					break;
+				}
+				findOffset = i + 3 + len;
+			}
+			if (count == 0)
+				return null;
+			return Tag;
+		}
+	}
+}

Scripts/TaglibSharp/IIM/IIMReader.cs.meta

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Scripts/TaglibSharp/IIM/IIMTag.cs

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+//
+//  IIMTag.cs
+//
+//  Author:
+//       Eberhard Beilharz <eb1@sil.org>
+//
+//  Copyright (c) 2012 Eberhard Beilharz
+//
+//  This library is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as
+//  published by the Free Software Foundation; either version 2.1 of the
+//  License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful, but
+//  WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+using System.Collections.Generic;
+
+namespace TagLib.IIM
+{
+	/// <summary>
+	/// Represents an IIM Tag
+	/// </summary>
+	public class IIMTag : Xmp.XmpTag
+	{
+		List<string> m_Keywords;
+
+		/// <summary>
+		/// Constructor
+		/// </summary>
+		public IIMTag ()
+		{
+		}
+
+		/// <summary>
+		/// Defines the supported TagType
+		/// </summary>
+		public override TagTypes TagTypes {
+			get {
+				return TagTypes.IPTCIIM;
+			}
+		}
+
+		/// <summary>
+		/// Clear IIM content
+		/// </summary>
+		public override void Clear ()
+		{
+			Title = null;
+			m_Keywords = null;
+			Creator = null;
+			Copyright = null;
+			Comment = null;
+		}
+
+		/// <summary>
+		/// Get or Set the Title Tag
+		/// </summary>
+
+		public override string Title { get; set; }
+
+		/// <summary>
+		/// Get or Set the Creator Tag
+		/// </summary>
+
+		public override string Creator { get; set; }
+
+		/// <summary>
+		/// Get or Set the Copyright Tag
+		/// </summary>
+
+		public override string Copyright { get; set; }
+
+		/// <summary>
+		/// Get or Set the comment Tag
+		/// </summary>
+		public override string Comment { get; set; }
+
+		/// <summary>
+		/// Get or Set the Keywords Tag
+		/// </summary>
+		public override string[] Keywords {
+			get {
+				return m_Keywords?.ToArray ();
+			}
+		}
+
+		internal void AddKeyword (string keyword)
+		{
+			if (m_Keywords == null)
+				m_Keywords = new List<string> ();
+			m_Keywords.Add (keyword);
+		}
+	}
+}

Scripts/TaglibSharp/IIM/IIMTag.cs.meta

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