/*************************************************************************** * Copyright 2005 Daniel Drake * Copyright 2005 Boris Peterbarg ****************************************************************************/ /* THIS FILE IS LICENSED UNDER THE MIT LICENSE AS OUTLINED IMMEDIATELY BELOW: * * 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. */ using System.IO; using System.Text; using Entagged.Audioformats.Tracker; namespace Entagged.Audioformats.Tracker.Util { public class TrackerTagReader { public Tag Read(Stream fs, TrackerFormat format) { Tag tag = new Tag(); int start_offset = 0; int end_offset = 0; string sig = null; switch (format) { case TrackerFormat.S3m: end_offset = 28; break; case TrackerFormat.Mod: end_offset = 20; break; case TrackerFormat.Xm: start_offset = 17; end_offset = 20; break; case TrackerFormat.It: sig = "IMPM"; end_offset = 26; break; } //Parse the tag -)------------------------------------------------ fs.Seek(start_offset, SeekOrigin.Begin); byte[] b; if (sig != null) { b = new byte[sig.Length]; fs.Read(b, 0, sig.Length); if (Encoding.ASCII.GetString(b) != sig) return tag; } b = new byte[end_offset]; fs.Read(b, 0, end_offset); string content = Encoding.ASCII.GetString(b, 0, end_offset); int term = content.IndexOf('\0'); if (term == -1) term = end_offset; content = content.Substring(0, term).Trim(); tag.AddTitle(content); return tag; } } }