/// <summary>
/// This function renames a tag.
/// </summary>
/// <param name="tagIndex">The index of the tag to rename.</param>
/// <param name="newName">The new name of the tag to rename as.</param>
public void RenameTag(int tagIndex, string newName)
{
//Get our tag instance
HaloMap.TagItem tagItem = map.IndexItems[tagIndex];
//Compare our string lengths..
if (tagItem.Name.Length == newName.Length)
{
//They are the same length. Let's write our new string.
//Open our IO
map.OpenIO();
//Go to our tag_name_index_entry
map.IO.In.BaseStream.Position = map.MapHeader.fileTableIndexOffset + (tagIndex * 4);
//Read our tagnameoffset
int tagNameOffset = map.IO.In.ReadInt32() + map.MapHeader.fileTableOffset;
//Go to this position
map.IO.In.BaseStream.Position = tagNameOffset;
//Write our tagname
map.IO.Out.WriteAsciiString(newName, tagItem.Name.Length);
//Close our IO
map.CloseIO();
//Set our tagname.
map.IndexItems[tagIndex].Name = newName;
}
else
{
//Calculate our table difference.
int differenceInStringLength = (tagItem.Name.Length - newName.Length);
int newTableSizeUnpadded = map.MapHeader.fileTableSize - differenceInStringLength;
int newTableSize = newTableSizeUnpadded + ExtraFunctions.CalculatePadding(newTableSizeUnpadded, 0x1000);
int oldTableSize = map.MapHeader.fileTableSize + ExtraFunctions.CalculatePadding(map.MapHeader.fileTableSize, 0x1000);
int differenceInSize = oldTableSize - newTableSize;
//Open our IO
map.OpenIO();
//Go to our tag_name_index_entry
map.IO.In.BaseStream.Position = map.MapHeader.fileTableIndexOffset + (tagIndex * 4);
//Read our tagnameoffset
int tagNameOffset = map.IO.In.ReadInt32() + map.MapHeader.fileTableOffset;
//Loop for each tag_name_index after it.
for (int i = tagIndex + 1; i < map.IndexHeader.tagCount; i++)
{
//Go to our tag_name_index_entry
map.IO.In.BaseStream.Position = map.MapHeader.fileTableIndexOffset + (i * 4);
//Read our tagindex
int tagOff = map.IO.In.ReadInt32();
//Recalculate it.
tagOff -= differenceInStringLength;
//Go to our tag_name_index_entry
map.IO.Out.BaseStream.Position = map.MapHeader.fileTableIndexOffset + (i * 4);
//Write it
map.IO.Out.Write(tagOff);
}
//Close our IO
map.CloseIO();
//If it's any different.
if (differenceInSize > 0)
{
ExtraFunctions.DeleteBytes(map.FileName, map.MapHeader.fileTableOffset + newTableSize, oldTableSize - newTableSize);
}
else
{
ExtraFunctions.InsertBytes(map.FileName, map.MapHeader.fileTableOffset + oldTableSize, newTableSize - oldTableSize);
}
//Open our IO
map.OpenIO();
//Go to this position
map.IO.Out.BaseStream.Position = tagNameOffset;
//Write our tagname
map.IO.Out.WriteAsciiString(newName, newName.Length);
map.IO.Out.Write((byte)0);
for (int i = tagIndex + 1; i < map.IndexHeader.tagCount; i++)
{
//Write the tagname
map.IO.Out.WriteAsciiString(map.IndexItems[i].Name, map.IndexItems[i].Name.Length);
map.IO.Out.Write((byte)0);
}
//For the rest of our table, write the padding.
byte[] padding = new byte[newTableSize - newTableSizeUnpadded];
//Write our padding
map.IO.Out.Write(padding);
//Recalculate some header values.
map.IO.Out.BaseStream.Position = 20;
map.IO.Out.Write(((map.MapHeader.virtSegmentStart - differenceInSize) + map.MapHeader.headerMagic));
map.IO.Out.BaseStream.Position = 700;
map.IO.Out.Write(newTableSizeUnpadded);
map.IO.Out.BaseStream.Position = 704;
map.IO.Out.Write(((map.MapHeader.fileTableIndexOffset - differenceInSize) + map.MapHeader.headerMagic));
map.IO.Out.BaseStream.Position = 1136;
map.IO.Out.Write((map.MapHeader.RawTableOffset - differenceInSize));
map.IO.Out.BaseStream.Position = 1144;
map.IO.Out.Write((map.MapHeader.localeTableAddressModifier - differenceInSize));
//Close our IO
map.CloseIO();
//Reload our map
map.Reload();
}
}