KFreonLib.Textures.ME2Texture2D.replaceImage2 C# (CSharp) Method

        public void replaceImage2(string strImgSize, ImageFile im, string archiveDir)
        {
            ImageSize imgSize = ImageSize.stringToSize(strImgSize);
            if (!privateimgList.Exists(img => img.imgSize == imgSize))
                throw new FileNotFoundException("Image with resolution " + imgSize + " isn't found");

            int imageIdx = privateimgList.FindIndex(img => img.imgSize == imgSize);
            ImageInfo imgInfo = privateimgList[imageIdx];

            // check if replacing image is supported
            ImageFile imgFile = im;
            ImageEngineFormat imgFileFormat = Textures.Methods.ParseFormat(imgFile.format);
            if (texFormat != imgFileFormat)
                throw new FormatException("Different image format, original is " + texFormat + ", new is " + imgFile.subtype());

            byte[] imgBuffer;

            // if the image is empty then recover the archive compression from the image list
            if (imgInfo.storageType == storage.empty)
            {
                imgInfo.storageType = privateimgList.Find(img => img.storageType != storage.empty && img.storageType != storage.pccSto).storageType;
                imgInfo.uncSize = imgFile.resize().Length;
                imgInfo.cprSize = imgFile.resize().Length;
            }

            switch (imgInfo.storageType)
            {
                case storage.arcCpr:
                case storage.arcUnc:
                    string archivePath = FullArcPath;
                    if (String.IsNullOrEmpty(archivePath))
                        archivePath = GetTexArchive(archiveDir);
                    if (!File.Exists(archivePath))
                        throw new FileNotFoundException("Texture archive not found in " + archivePath);

                    imgBuffer = imgFile.imgData;

                    if (imgBuffer.Length != imgInfo.uncSize)
                        throw new FormatException("image sizes do not match, original is " + imgInfo.uncSize + ", new is " + imgBuffer.Length);

                    if (arcName.ToLower() == Path.GetFileNameWithoutExtension(MEDirectories.MEDirectories.CachePath.ToLower()))
                    {
                        ChooseNewCache(archiveDir, imgBuffer.Length);
                        archivePath = FullArcPath;
                    }
                    else
                    {
                        FileInfo arc = new FileInfo(archivePath);
                        if (arc.Length + imgBuffer.Length >= 0x80000000)
                        {
                            ChooseNewCache(archiveDir, imgBuffer.Length);
                            archivePath = FullArcPath;
                        }
                    }

                    using (FileStream archiveStream = new FileStream(archivePath, FileMode.Append, FileAccess.Write))
                    {
                        int newOffset = (int)archiveStream.Position;
                        if (imgInfo.storageType == storage.arcCpr)
                        {
                            byte[] tempBuff;
                            SaltLZOHelper lzohelper = new SaltLZOHelper();
                            tempBuff = lzohelper.CompressTex(imgBuffer);
                            imgBuffer = new byte[tempBuff.Length];
                            Buffer.BlockCopy(tempBuff, 0, imgBuffer, 0, tempBuff.Length);
                            imgInfo.cprSize = imgBuffer.Length;
                        }
                        archiveStream.Write(imgBuffer, 0, imgBuffer.Length);

                        imgInfo.offset = newOffset;
                    }
                    break;
                case storage.pccSto:
                    imgBuffer = imgFile.resize();
                    using (MemoryStream dataStream = new MemoryStream())
                    {
                        dataStream.WriteBytes(imageData);
                        if (imgBuffer.Length <= imgInfo.uncSize && imgInfo.offset > 0)
                            dataStream.Seek(imgInfo.offset, SeekOrigin.Begin);
                        else
                            imgInfo.offset = (int)dataStream.Position;
                        dataStream.WriteBytes(imgBuffer);
                        imgInfo.cprSize = imgBuffer.Length;
                        imgInfo.uncSize = imgBuffer.Length;
                        imageData = dataStream.ToArray();
                    }
                    break;
            }

            privateimgList[imageIdx] = imgInfo;
        }