public override void Write(TextWriter writer)
{
StartTag.Write(writer);
foreach (var node in Nodes)
{
node.Write(writer);
}
EndTag.Write(writer);
}
public override void Save()
{
Mode = AccessMode.Write;
try
{
long metadata_start = StartTag.Write();
long metadata_end;
IList <Block> old_blocks = ReadBlocks(ref metadata_start, out metadata_end, BlockMode.Blacklist, BlockType.XiphComment, BlockType.Picture);
GetTag(TagTypes.Xiph, true);
List <Block> new_blocks = new List <Block>();
new_blocks.Add(old_blocks[0]);
foreach (Block block in old_blocks)
{
if (block.Type != BlockType.StreamInfo && block.Type != BlockType.XiphComment && block.Type != BlockType.Picture && block.Type != BlockType.Padding)
{
new_blocks.Add(block);
}
}
new_blocks.Add(new Block(BlockType.XiphComment, (GetTag(TagTypes.Xiph, true) as Ogg.XiphComment).Render(false)));
foreach (IPicture picture in metadata.Pictures)
{
if (picture == null)
{
continue;
}
new_blocks.Add(new Block(BlockType.Picture, new Picture(picture).Render()));
}
long length = 0;
foreach (Block block in new_blocks)
{
length += block.TotalSize;
}
long padding_size = metadata_end - metadata_start - BlockHeader.Size - length;
if (padding_size < 0)
{
padding_size = 1024 * 4;
}
if (padding_size != 0)
{
new_blocks.Add(new Block(BlockType.Padding, new ByteVector((int)padding_size)));
}
ByteVector block_data = new ByteVector();
for (int i = 0; i < new_blocks.Count; i++)
{
block_data.Add(new_blocks[i].Render(i == new_blocks.Count - 1));
}
Insert(block_data, metadata_start, metadata_end - metadata_start);
EndTag.Write();
TagTypesOnDisk = TagTypes;
}
finally
{
Mode = AccessMode.Closed;
}
}
/// <summary>
/// Saves the changes made in the current instance to the
/// file it represents.
/// </summary>
public override void Save()
{
Mode = AccessMode.Write;
try {
// Update the tags at the beginning of the file.
long metadata_start = StartTag.Write();
long metadata_end;
// Get all the blocks, but don't read the data for ones
// we're filling with stored data.
IList <Block> old_blocks = ReadBlocks(ref metadata_start,
out metadata_end, BlockMode.Blacklist,
BlockType.XiphComment, BlockType.Picture);
// Create new vorbis comments is they don't exist.
GetTag(TagTypes.Xiph, true);
// Create new blocks and add the basics.
List <Block> new_blocks = new List <Block> ();
new_blocks.Add(old_blocks [0]);
// Add blocks we don't deal with from the file.
foreach (Block block in old_blocks)
{
if (block.Type != BlockType.StreamInfo &&
block.Type != BlockType.XiphComment &&
block.Type != BlockType.Picture &&
block.Type != BlockType.Padding)
{
new_blocks.Add(block);
}
}
new_blocks.Add(new Block(BlockType.XiphComment,
(GetTag(TagTypes.Xiph, true) as
Ogg.XiphComment).Render(false)));
foreach (IPicture picture in metadata.Pictures)
{
if (picture == null)
{
continue;
}
new_blocks.Add(new Block(BlockType.Picture,
new Picture(picture).Render()));
}
// Get the length of the blocks.
long length = 0;
foreach (Block block in new_blocks)
{
length += block.TotalSize;
}
// Find the padding size to avoid trouble. If that fails
// make some.
long padding_size = metadata_end - metadata_start -
BlockHeader.Size - length;
if (padding_size < 0)
{
padding_size = 1024 * 4;
}
// Add a padding block.
if (padding_size != 0)
{
new_blocks.Add(new Block(BlockType.Padding,
new ByteVector((int)padding_size)));
}
// Render the blocks.
ByteVector block_data = new ByteVector();
for (int i = 0; i < new_blocks.Count; i++)
{
block_data.Add(new_blocks [i].Render(
i == new_blocks.Count - 1));
}
// Update the blocks.
Insert(block_data, metadata_start, metadata_end -
metadata_start);
// Update the tags at the end of the file.
EndTag.Write();
TagTypesOnDisk = TagTypes;
} finally {
Mode = AccessMode.Closed;
}
}
