/// <summary>
/// Extracts the specified file.
/// </summary>
/// <param name="file">The file to extract.</param>
/// <returns>The file data.</returns>
public byte[] Extract(VFileInfo file)
{
if (file.Offset < 0 || file.Offset >= Data.Length)
throw new ArgumentException("Invalid file");
var result = new byte[file.Size];
Buffer.BlockCopy(Data, file.Offset, result, 0, file.Size);
return result;
}
/// <summary>
/// Extracts the specified file.
/// </summary>
/// <param name="file">The file to extract.</param>
/// <returns>The file data.</returns>
public byte[] Extract(VFileInfo file)
{
if (file.Offset < 0 || file.Offset >= Data.Length)
{
throw new ArgumentException("Invalid file");
}
var result = new byte[file.Size];
Buffer.BlockCopy(Data, file.Offset, result, 0, file.Size);
return(result);
}
/// <summary>
/// Adds a new file to the tag.
/// </summary>
/// <param name="name">The name of the file to add.</param>
/// <param name="folder">The folder the file is located in.</param>
/// <param name="fileData">The file data.</param>
public void Insert(string name, string folder, byte[] fileData)
{
// Insert a file of size 0 and then replace it
var fileInfo = new VFileInfo
{
Name = name,
Folder = folder,
Offset = Data.Length,
Size = 0
};
Files.Add(fileInfo);
Replace(fileInfo, fileData);
}
/// <summary>
/// Replaces the specified file.
/// </summary>
/// <param name="file">The file to replace.</param>
/// <param name="newData">The data to replace it with.</param>
public void Replace(VFileInfo file, byte[] newData)
{
// Replace the file's data in the data array
var sizeDelta = newData.Length - file.Size;
Data = ArrayUtil.Replace(Data, file.Offset, file.Size, newData);
// Adjust file offsets
foreach (var adjustFile in Files)
{
if (adjustFile.Offset > file.Offset)
{
adjustFile.Offset += sizeDelta;
}
}
file.Size = newData.Length;
}
/// <summary>
/// Adds a new file to the tag.
/// </summary>
/// <param name="name">The name of the file to add.</param>
/// <param name="folder">The folder the file is located in.</param>
/// <param name="fileData">The file data.</param>
public void Insert(string name, string folder, byte[] fileData)
{
// Insert a file of size 0 and then replace it
var fileInfo = new VFileInfo
{
Name = name,
Folder = folder,
Offset = Data.Length,
Size = 0
};
Files.Add(fileInfo);
Replace(fileInfo, fileData);
}
/// <summary>
/// Replaces the specified file.
/// </summary>
/// <param name="file">The file to replace.</param>
/// <param name="newData">The data to replace it with.</param>
public void Replace(VFileInfo file, byte[] newData)
{
// Replace the file's data in the data array
var sizeDelta = newData.Length - file.Size;
Data = ArrayUtil.Replace(Data, file.Offset, file.Size, newData);
// Adjust file offsets
foreach (var adjustFile in Files)
{
if (adjustFile.Offset > file.Offset)
adjustFile.Offset += sizeDelta;
}
file.Size = newData.Length;
}
/// <summary>
/// Removes a file from the tag.
/// </summary>
/// <param name="file">The file to remove.</param>
public void Remove(VFileInfo file)
{
// Replace the file with an empty byte array and then remove its entry
Replace(file, new byte[0]);
Files.Remove(file);
}
/// <summary>
/// Removes a file from the tag.
/// </summary>
/// <param name="file">The file to remove.</param>
public void Remove(VFileInfo file)
{
// Replace the file with an empty byte array and then remove its entry
Replace(file, new byte[0]);
Files.Remove(file);
}
