697 lines
29 KiB
C#
697 lines
29 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using OpenMetaverse;
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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namespace OpenSim.Framework
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{
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public static class SLUtil
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// Asset types used only in OpenSim.
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/// To avoid clashing with the code numbers used in Second Life, use only negative numbers here.
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/// </summary>
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public enum OpenSimAssetType : sbyte
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{
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Material = -2
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}
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#region SL / file extension / content-type conversions
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/// <summary>
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/// Returns the Enum entry corresponding to the given code, regardless of whether it belongs
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/// to the AssetType or OpenSimAssetType enums.
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/// </summary>
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public static object AssetTypeFromCode(sbyte assetType)
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{
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if (Enum.IsDefined(typeof(OpenMetaverse.AssetType), assetType))
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return (OpenMetaverse.AssetType)assetType;
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else if (Enum.IsDefined(typeof(OpenSimAssetType), assetType))
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return (OpenSimAssetType)assetType;
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else
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return OpenMetaverse.AssetType.Unknown;
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}
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private class TypeMapping
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{
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private sbyte assetType;
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private sbyte inventoryType;
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private string contentType;
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private string contentType2;
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private string extension;
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public sbyte AssetTypeCode
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{
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get { return assetType; }
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}
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public object AssetType
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{
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get { return AssetTypeFromCode(assetType); }
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}
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public sbyte InventoryType
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{
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get { return inventoryType; }
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}
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public string ContentType
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{
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get { return contentType; }
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}
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public string ContentType2
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{
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get { return contentType2; }
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}
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public string Extension
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{
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get { return extension; }
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}
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private TypeMapping(sbyte assetType, sbyte inventoryType, string contentType, string contentType2, string extension)
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{
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this.assetType = assetType;
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this.inventoryType = inventoryType;
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this.contentType = contentType;
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this.contentType2 = contentType2;
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this.extension = extension;
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}
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public TypeMapping(AssetType assetType, sbyte inventoryType, string contentType, string contentType2, string extension)
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: this((sbyte)assetType, inventoryType, contentType, contentType2, extension)
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{
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}
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public TypeMapping(AssetType assetType, InventoryType inventoryType, string contentType, string contentType2, string extension)
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: this((sbyte)assetType, (sbyte)inventoryType, contentType, contentType2, extension)
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{
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}
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public TypeMapping(AssetType assetType, InventoryType inventoryType, string contentType, string extension)
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: this((sbyte)assetType, (sbyte)inventoryType, contentType, null, extension)
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{
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}
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public TypeMapping(AssetType assetType, FolderType inventoryType, string contentType, string extension)
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: this((sbyte)assetType, (sbyte)inventoryType, contentType, null, extension)
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{
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}
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public TypeMapping(OpenSimAssetType assetType, InventoryType inventoryType, string contentType, string extension)
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: this((sbyte)assetType, (sbyte)inventoryType, contentType, null, extension)
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{
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}
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}
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/// <summary>
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/// Maps between AssetType, InventoryType and Content-Type.
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/// Where more than one possibility exists, the first one takes precedence. E.g.:
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/// AssetType "AssetType.Texture" -> Content-Type "image-xj2c"
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/// Content-Type "image/x-j2c" -> InventoryType "InventoryType.Texture"
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/// </summary>
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private static TypeMapping[] MAPPINGS = new TypeMapping[] {
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new TypeMapping(AssetType.Unknown, InventoryType.Unknown, "application/octet-stream", "bin"),
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new TypeMapping(AssetType.Texture, InventoryType.Texture, "image/x-j2c", "image/jp2", "j2c"),
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new TypeMapping(AssetType.Texture, InventoryType.Snapshot, "image/x-j2c", "image/jp2", "j2c"),
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new TypeMapping(AssetType.TextureTGA, InventoryType.Texture, "image/tga", "tga"),
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new TypeMapping(AssetType.ImageTGA, InventoryType.Texture, "image/tga", "tga"),
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new TypeMapping(AssetType.ImageJPEG, InventoryType.Texture, "image/jpeg", "jpg"),
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new TypeMapping(AssetType.Sound, InventoryType.Sound, "audio/ogg", "application/ogg", "ogg"),
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new TypeMapping(AssetType.SoundWAV, InventoryType.Sound, "audio/x-wav", "wav"),
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new TypeMapping(AssetType.CallingCard, InventoryType.CallingCard, "application/vnd.ll.callingcard", "application/x-metaverse-callingcard", "callingcard"),
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new TypeMapping(AssetType.Landmark, InventoryType.Landmark, "application/vnd.ll.landmark", "application/x-metaverse-landmark", "landmark"),
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new TypeMapping(AssetType.Clothing, InventoryType.Wearable, "application/vnd.ll.clothing", "application/x-metaverse-clothing", "clothing"),
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new TypeMapping(AssetType.Object, InventoryType.Object, "application/vnd.ll.primitive", "application/x-metaverse-primitive", "primitive"),
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new TypeMapping(AssetType.Object, InventoryType.Attachment, "application/vnd.ll.primitive", "application/x-metaverse-primitive", "primitive"),
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new TypeMapping(AssetType.Notecard, InventoryType.Notecard, "application/vnd.ll.notecard", "application/x-metaverse-notecard", "notecard"),
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new TypeMapping(AssetType.LSLText, InventoryType.LSL, "application/vnd.ll.lsltext", "application/x-metaverse-lsl", "lsl"),
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new TypeMapping(AssetType.LSLBytecode, InventoryType.LSL, "application/vnd.ll.lslbyte", "application/x-metaverse-lso", "lso"),
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new TypeMapping(AssetType.Bodypart, InventoryType.Wearable, "application/vnd.ll.bodypart", "application/x-metaverse-bodypart", "bodypart"),
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new TypeMapping(AssetType.Animation, InventoryType.Animation, "application/vnd.ll.animation", "application/x-metaverse-animation", "animation"),
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new TypeMapping(AssetType.Gesture, InventoryType.Gesture, "application/vnd.ll.gesture", "application/x-metaverse-gesture", "gesture"),
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new TypeMapping(AssetType.Simstate, InventoryType.Snapshot, "application/x-metaverse-simstate", "simstate"),
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new TypeMapping(AssetType.Link, InventoryType.Unknown, "application/vnd.ll.link", "link"),
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new TypeMapping(AssetType.LinkFolder, InventoryType.Unknown, "application/vnd.ll.linkfolder", "linkfolder"),
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new TypeMapping(AssetType.Mesh, InventoryType.Mesh, "application/vnd.ll.mesh", "llm"),
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// The next few items are about inventory folders
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new TypeMapping(AssetType.Folder, FolderType.None, "application/vnd.ll.folder", "folder"),
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new TypeMapping(AssetType.Folder, FolderType.Root, "application/vnd.ll.rootfolder", "rootfolder"),
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new TypeMapping(AssetType.Folder, FolderType.Trash, "application/vnd.ll.trashfolder", "trashfolder"),
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new TypeMapping(AssetType.Folder, FolderType.Snapshot, "application/vnd.ll.snapshotfolder", "snapshotfolder"),
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new TypeMapping(AssetType.Folder, FolderType.LostAndFound, "application/vnd.ll.lostandfoundfolder", "lostandfoundfolder"),
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new TypeMapping(AssetType.Folder, FolderType.Favorites, "application/vnd.ll.favoritefolder", "favoritefolder"),
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new TypeMapping(AssetType.Folder, FolderType.CurrentOutfit, "application/vnd.ll.currentoutfitfolder", "currentoutfitfolder"),
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new TypeMapping(AssetType.Folder, FolderType.Outfit, "application/vnd.ll.outfitfolder", "outfitfolder"),
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new TypeMapping(AssetType.Folder, FolderType.MyOutfits, "application/vnd.ll.myoutfitsfolder", "myoutfitsfolder"),
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// This next mappping is an asset to inventory item mapping.
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// Note: LL stores folders as assets of type Folder = 8, and it has a corresponding InventoryType = 8
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// OpenSim doesn't store folders as assets, so this mapping should only be used when parsing things from the viewer to the server
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new TypeMapping(AssetType.Folder, InventoryType.Folder, "application/vnd.ll.folder", "folder"),
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// OpenSim specific
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new TypeMapping(OpenSimAssetType.Material, InventoryType.Unknown, "application/llsd+xml", "material")
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};
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private static Dictionary<sbyte, string> asset2Content;
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private static Dictionary<sbyte, string> asset2Extension;
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private static Dictionary<sbyte, string> inventory2Content;
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private static Dictionary<string, sbyte> content2Asset;
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private static Dictionary<string, sbyte> content2Inventory;
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private static Dictionary<string, AssetType> name2Asset = new Dictionary<string, AssetType>()
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{
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{"texture", AssetType.Texture },
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{"sound", AssetType.Sound},
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{"callcard", AssetType.CallingCard},
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{"landmark", AssetType.Landmark},
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{"script", (AssetType)4},
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{"clothing", AssetType.Clothing},
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{"object", AssetType.Object},
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{"notecard", AssetType.Notecard},
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{"category", AssetType.Folder},
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{"lsltext", AssetType.LSLText},
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{"lslbyte", AssetType.LSLBytecode},
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{"txtr_tga", AssetType.TextureTGA},
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{"bodypart", AssetType.Bodypart},
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{"snd_wav", AssetType.SoundWAV},
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{"img_tga", AssetType.ImageTGA},
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{"jpeg", AssetType.ImageJPEG},
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{"animatn", AssetType.Animation},
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{"gesture", AssetType.Gesture},
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{"simstate", AssetType.Simstate},
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{"mesh", AssetType.Mesh},
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{"settings", AssetType.Settings}
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};
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private static Dictionary<string, FolderType> name2Inventory = new Dictionary<string, FolderType>()
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{
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{"texture", FolderType.Texture},
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{"sound", FolderType.Sound},
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{"callcard", FolderType.CallingCard},
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{"landmark", FolderType.Landmark},
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{"script", (FolderType)4},
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{"clothing", FolderType.Clothing},
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{"object", FolderType.Object},
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{"notecard", FolderType.Notecard},
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{"root", FolderType.Root},
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{"lsltext", FolderType.LSLText},
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{"bodypart", FolderType.BodyPart},
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{"trash", FolderType.Trash},
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{"snapshot", FolderType.Snapshot},
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{"lostandfound", FolderType.LostAndFound},
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{"animatn", FolderType.Animation},
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{"gesture", FolderType.Gesture},
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{"favorites", FolderType.Favorites},
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{"currentoutfit", FolderType.CurrentOutfit},
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{"outfit", FolderType.Outfit},
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{"myoutfits", FolderType.MyOutfits},
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{"mesh", FolderType.Mesh},
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{"settings", FolderType.Settings},
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{"suitcase", FolderType.Suitcase}
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};
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static SLUtil()
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{
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asset2Content = new Dictionary<sbyte, string>();
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asset2Extension = new Dictionary<sbyte, string>();
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inventory2Content = new Dictionary<sbyte, string>();
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content2Asset = new Dictionary<string, sbyte>();
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content2Inventory = new Dictionary<string, sbyte>();
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foreach (TypeMapping mapping in MAPPINGS)
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{
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sbyte assetType = mapping.AssetTypeCode;
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if (!asset2Content.ContainsKey(assetType))
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asset2Content.Add(assetType, mapping.ContentType);
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if (!asset2Extension.ContainsKey(assetType))
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asset2Extension.Add(assetType, mapping.Extension);
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if (!inventory2Content.ContainsKey(mapping.InventoryType))
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inventory2Content.Add(mapping.InventoryType, mapping.ContentType);
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if (!content2Asset.ContainsKey(mapping.ContentType))
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content2Asset.Add(mapping.ContentType, assetType);
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if (!content2Inventory.ContainsKey(mapping.ContentType))
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content2Inventory.Add(mapping.ContentType, mapping.InventoryType);
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if (mapping.ContentType2 != null)
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{
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if (!content2Asset.ContainsKey(mapping.ContentType2))
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content2Asset.Add(mapping.ContentType2, assetType);
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if (!content2Inventory.ContainsKey(mapping.ContentType2))
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content2Inventory.Add(mapping.ContentType2, mapping.InventoryType);
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}
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}
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}
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public static AssetType SLAssetName2Type(string name)
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{
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if (name2Asset.TryGetValue(name, out AssetType type))
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return type;
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return AssetType.Unknown;
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}
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public static FolderType SLInvName2Type(string name)
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{
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if (name2Inventory.TryGetValue(name, out FolderType type))
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return type;
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return FolderType.None;
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}
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public static string SLAssetTypeToContentType(int assetType)
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{
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string contentType;
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if (!asset2Content.TryGetValue((sbyte)assetType, out contentType))
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contentType = asset2Content[(sbyte)AssetType.Unknown];
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return contentType;
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}
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public static string SLInvTypeToContentType(int invType)
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{
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string contentType;
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if (!inventory2Content.TryGetValue((sbyte)invType, out contentType))
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contentType = inventory2Content[(sbyte)InventoryType.Unknown];
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return contentType;
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}
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public static sbyte ContentTypeToSLAssetType(string contentType)
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{
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sbyte assetType;
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if (!content2Asset.TryGetValue(contentType, out assetType))
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assetType = (sbyte)AssetType.Unknown;
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return (sbyte)assetType;
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}
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public static sbyte ContentTypeToSLInvType(string contentType)
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{
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sbyte invType;
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if (!content2Inventory.TryGetValue(contentType, out invType))
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invType = (sbyte)InventoryType.Unknown;
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return (sbyte)invType;
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}
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public static string SLAssetTypeToExtension(int assetType)
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{
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string extension;
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if (!asset2Extension.TryGetValue((sbyte)assetType, out extension))
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extension = asset2Extension[(sbyte)AssetType.Unknown];
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return extension;
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}
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#endregion SL / file extension / content-type conversions
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static char[] seps = new char[] { '\t', '\n' };
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static char[] stringseps = new char[] { '|', '\n' };
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static byte[] moronize = new byte[16]
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{
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60, 17, 94, 81, 4, 244, 82, 60, 159, 166, 152, 175, 241, 3, 71, 48
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};
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static int getField(string note, int start, string name, bool isString, out string value)
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{
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value = String.Empty;
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int end = -1;
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int limit = note.Length - start;
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if (limit > 64)
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limit = 64;
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int indx = note.IndexOf(name, start, limit);
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if (indx < 0)
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return -1;
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indx += name.Length + 1; // eat \t
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limit = note.Length - indx - 2;
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if (limit > 129)
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limit = 129;
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if (isString)
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end = note.IndexOfAny(stringseps, indx, limit);
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else
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end = note.IndexOfAny(seps, indx, limit);
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if (end < 0)
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return -1;
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value = note.Substring(indx, end - indx);
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return end;
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}
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private static UUID deMoronize(UUID id)
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{
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byte[] data = new byte[16];
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id.ToBytes(data,0);
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for(int i = 0; i < 16; ++i)
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data[i] ^= moronize[i];
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return new UUID(data,0);
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}
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public static InventoryItemBase GetEmbeddedItem(byte[] data, UUID itemID)
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{
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if(data == null || data.Length < 300)
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return null;
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string note = Util.UTF8.GetString(data);
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if (String.IsNullOrWhiteSpace(note))
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return null;
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// waste some time checking rigid versions
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string version = note.Substring(0,21);
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if (!version.Equals("Linden text version 2"))
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return null;
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version = note.Substring(24, 25);
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if (!version.Equals("LLEmbeddedItems version 1"))
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return null;
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int indx = note.IndexOf(itemID.ToString(), 100);
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if (indx < 0)
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return null;
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indx = note.IndexOf("permissions", indx, 100); // skip parentID
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if (indx < 0)
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return null;
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string valuestr;
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indx = getField(note, indx, "base_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint basemask))
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return null;
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indx = getField(note, indx, "owner_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint ownermask))
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return null;
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indx = getField(note, indx, "group_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint groupmask))
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return null;
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indx = getField(note, indx, "everyone_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint everyonemask))
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return null;
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indx = getField(note, indx, "next_owner_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint nextownermask))
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return null;
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indx = getField(note, indx, "creator_id", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(valuestr, out UUID creatorID))
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return null;
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indx = getField(note, indx, "owner_id", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(valuestr, out UUID ownerID))
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return null;
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int limit = note.Length - indx;
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if (limit > 120)
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limit = 120;
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indx = note.IndexOf('}', indx, limit); // last owner
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if (indx < 0)
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return null;
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int curindx = indx;
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UUID assetID = UUID.Zero;
|
|
indx = getField(note, indx, "asset_id", false, out valuestr);
|
|
if (indx < 0)
|
|
{
|
|
indx = getField(note, curindx, "shadow_id", false, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
if (!UUID.TryParse(valuestr, out assetID))
|
|
return null;
|
|
assetID = deMoronize(assetID);
|
|
}
|
|
else
|
|
{
|
|
if (!UUID.TryParse(valuestr, out assetID))
|
|
return null;
|
|
}
|
|
|
|
indx = getField(note, indx, "type", false, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
|
|
AssetType assetType = SLAssetName2Type(valuestr);
|
|
|
|
indx = getField(note, indx, "inv_type", false, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
FolderType invType = SLInvName2Type(valuestr);
|
|
|
|
indx = getField(note, indx, "flags", false, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint flags))
|
|
return null;
|
|
|
|
limit = note.Length - indx;
|
|
if (limit > 120)
|
|
limit = 120;
|
|
indx = note.IndexOf('}', indx, limit); // skip sale
|
|
if (indx < 0)
|
|
return null;
|
|
|
|
indx = getField(note, indx, "name", true, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
|
|
string name = valuestr;
|
|
|
|
indx = getField(note, indx, "desc", true, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
string desc = valuestr;
|
|
|
|
InventoryItemBase item = new InventoryItemBase();
|
|
item.AssetID = assetID;
|
|
item.AssetType = (sbyte)assetType;
|
|
item.BasePermissions = basemask;
|
|
item.CreationDate = Util.UnixTimeSinceEpoch();
|
|
item.CreatorData = "";
|
|
item.CreatorId = creatorID.ToString();
|
|
item.CurrentPermissions = ownermask;
|
|
item.Description = desc;
|
|
item.Flags = flags;
|
|
item.Folder = UUID.Zero;
|
|
item.GroupID = UUID.Zero;
|
|
item.GroupOwned = false;
|
|
item.GroupPermissions = groupmask;
|
|
item.InvType = (sbyte)invType;
|
|
item.Name = name;
|
|
item.NextPermissions = nextownermask;
|
|
item.Owner = ownerID;
|
|
item.SalePrice = 0;
|
|
item.SaleType = (byte)SaleType.Not;
|
|
item.ID = UUID.Random();
|
|
return item;
|
|
}
|
|
|
|
public static List<UUID> GetEmbeddedAssetIDs(byte[] data)
|
|
{
|
|
if (data == null || data.Length < 79)
|
|
return null;
|
|
|
|
string note = Util.UTF8.GetString(data);
|
|
if (String.IsNullOrWhiteSpace(note))
|
|
return null;
|
|
|
|
// waste some time checking rigid versions
|
|
string tmpStr = note.Substring(0, 21);
|
|
if (!tmpStr.Equals("Linden text version 2"))
|
|
return null;
|
|
|
|
tmpStr = note.Substring(24, 25);
|
|
if (!tmpStr.Equals("LLEmbeddedItems version 1"))
|
|
return null;
|
|
|
|
tmpStr = note.Substring(52,5);
|
|
if (!tmpStr.Equals("count"))
|
|
return null;
|
|
|
|
int limit = note.Length - 57 - 2;
|
|
if (limit > 8)
|
|
limit = 8;
|
|
|
|
int indx = note.IndexOfAny(seps, 57, limit);
|
|
if(indx < 0)
|
|
return null;
|
|
|
|
if (!int.TryParse(note.Substring(57, indx - 57), out int count))
|
|
return null;
|
|
|
|
List<UUID> ids = new List<UUID>();
|
|
while(count > 0)
|
|
{
|
|
string valuestr;
|
|
UUID assetID = UUID.Zero;
|
|
indx = note.IndexOf('}',indx); // skip to end of permissions
|
|
if (indx < 0)
|
|
return null;
|
|
|
|
int curindx = indx;
|
|
indx = getField(note, indx, "asset_id", false, out valuestr);
|
|
if (indx < 0)
|
|
{
|
|
indx = getField(note, curindx, "shadow_id", false, out valuestr);
|
|
if (indx < 0)
|
|
return null;
|
|
if (!UUID.TryParse(valuestr, out assetID))
|
|
return null;
|
|
assetID = deMoronize(assetID);
|
|
}
|
|
else
|
|
{
|
|
if (!UUID.TryParse(valuestr, out assetID))
|
|
return null;
|
|
}
|
|
ids.Add(assetID);
|
|
|
|
indx = note.IndexOf('}', indx); // skip to end of sale
|
|
if (indx < 0)
|
|
return null;
|
|
indx = getField(note, indx, "name", false, out valuestr); // avoid name contents
|
|
if (indx < 0)
|
|
return null;
|
|
indx = getField(note, indx, "desc", false, out valuestr); // avoid desc contents
|
|
if (indx < 0)
|
|
return null;
|
|
|
|
if(count > 1)
|
|
{
|
|
indx = note.IndexOf("ext char index", indx); // skip to next
|
|
if (indx < 0)
|
|
return null;
|
|
}
|
|
--count;
|
|
}
|
|
|
|
indx = note.IndexOf("Text length",indx);
|
|
if(indx > 0)
|
|
{
|
|
indx += 14;
|
|
List<UUID> textIDs = Util.GetUUIDsOnString(ref note, indx, note.Length - indx);
|
|
if(textIDs.Count > 0)
|
|
ids.AddRange(textIDs);
|
|
}
|
|
if (ids.Count == 0)
|
|
return null;
|
|
return ids;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parse a notecard in Linden format to a list of ordinary lines for LSL
|
|
/// </summary>
|
|
/// <param name="rawInput"></param>
|
|
/// <returns></returns>
|
|
|
|
public static string[] ParseNotecardToArray(byte[] data)
|
|
{
|
|
// check of a valid notecard
|
|
if (data == null || data.Length < 79)
|
|
return new string[0];
|
|
|
|
//LSL can't read notecards with embedded items
|
|
if (data[58] != '0' || data[59] != '\n')
|
|
return new string[0];
|
|
|
|
string note = Util.UTF8.GetString(data);
|
|
if (String.IsNullOrWhiteSpace(note))
|
|
return new string[0];
|
|
|
|
// waste some time checking rigid versions
|
|
string tmpStr = note.Substring(0, 21);
|
|
if (!tmpStr.Equals("Linden text version 2"))
|
|
return new string[0];
|
|
|
|
tmpStr = note.Substring(24, 25);
|
|
if (!tmpStr.Equals("LLEmbeddedItems version 1"))
|
|
return new string[0];
|
|
|
|
tmpStr = note.Substring(52, 5);
|
|
if (!tmpStr.Equals("count"))
|
|
return new string[0];
|
|
|
|
int indx = note.IndexOf("Text length", 60);
|
|
if(indx < 0)
|
|
return new string[0];
|
|
|
|
indx += 12;
|
|
int end = indx + 1;
|
|
for (; end < note.Length && note[end] != '\n'; ++end);
|
|
if (note[end] != '\n')
|
|
return new string[0];
|
|
|
|
tmpStr = note.Substring(indx, end - indx);
|
|
if (!int.TryParse(tmpStr, out int textLen) || textLen == 0)
|
|
return new string[0];
|
|
|
|
indx = end + 1;
|
|
if (textLen + indx > data.Length)
|
|
return new string[0];
|
|
// yeackk
|
|
note = Util.UTF8.GetString(data, indx, textLen);
|
|
textLen = note.Length;
|
|
indx = 0;
|
|
var lines = new List<string>();
|
|
while (indx < textLen)
|
|
{
|
|
end = indx;
|
|
for (; end < textLen && note[end] != '\n'; ++end);
|
|
if(end == indx)
|
|
lines.Add(String.Empty);
|
|
else
|
|
lines.Add(note.Substring(indx, end - indx));
|
|
indx = end + 1;
|
|
}
|
|
// notes only seem to have one text section
|
|
|
|
if(lines.Count == 0)
|
|
return new string[0];
|
|
return lines.ToArray();
|
|
}
|
|
}
|
|
}
|