private static TagStructureAttribute GetStructureAttribute(Type type, EngineVersion version)
{
// First match against any TagStructureAttributes that have version restrictions
var attrib = type.GetCustomAttributes(typeof(TagStructureAttribute), false)
.Cast <TagStructureAttribute>()
.Where(a => a.MinVersion != EngineVersion.Unknown || a.MaxVersion != EngineVersion.Unknown)
.FirstOrDefault(a => VersionDetection.IsBetween(version, a.MinVersion, a.MaxVersion));
// If nothing was found, find the first attribute without any version restrictions
return(attrib ?? type.GetCustomAttributes(typeof(TagStructureAttribute), false)
.Cast <TagStructureAttribute>()
.FirstOrDefault(a => a.MinVersion == EngineVersion.Unknown && a.MaxVersion == EngineVersion.Unknown));
}
private bool GetCurrentPropertyInfo()
{
// If the field has a TagFieldAttribute, use it, otherwise use the default
Attribute = Field.GetCustomAttributes(typeof(TagFieldAttribute), false).FirstOrDefault() as TagFieldAttribute ?? DefaultFieldAttribute;
if (Attribute.Offset >= Info.TotalSize)
{
throw new InvalidOperationException("Offset for property \"" + Field.Name + "\" is outside of its structure");
}
// Read version restrictions, if any
var minVersionAttrib = Field.GetCustomAttributes(typeof(MinVersionAttribute), false).FirstOrDefault() as MinVersionAttribute;
var maxVersionAttrib = Field.GetCustomAttributes(typeof(MaxVersionAttribute), false).FirstOrDefault() as MaxVersionAttribute;
MinVersion = (minVersionAttrib != null) ? minVersionAttrib.Version : EngineVersion.Unknown;
MaxVersion = (maxVersionAttrib != null) ? maxVersionAttrib.Version : EngineVersion.Unknown;
return(VersionDetection.IsBetween(Info.Version, MinVersion, MaxVersion));
}
private static void CompareBlocks(object leftData, EngineVersion leftVersion, object rightData, EngineVersion rightVersion, TagVersionMap result, Queue <QueuedTag> tagQueue)
{
if (leftData == null || rightData == null)
{
return;
}
var type = leftData.GetType();
if (type == typeof(TagInstance))
{
// If the objects are tags, then we've found a match
var leftTag = (TagInstance)leftData;
var rightTag = (TagInstance)rightData;
if (leftTag.Group.Tag != rightTag.Group.Tag)
{
return;
}
if (leftTag.IsInGroup("rmt2") || leftTag.IsInGroup("rmdf") || leftTag.IsInGroup("vtsh") || leftTag.IsInGroup("pixl") || leftTag.IsInGroup("rm ") || leftTag.IsInGroup("bitm"))
{
return;
}
var translated = result.Translate(leftVersion, leftTag.Index, rightVersion);
if (translated >= 0)
{
return;
}
result.Add(leftVersion, leftTag.Index, rightVersion, rightTag.Index);
tagQueue.Enqueue(new QueuedTag {
Tag = rightTag
});
}
else if (type.IsArray)
{
if (type.GetElementType().IsPrimitive)
{
return;
}
// If the objects are arrays, then loop through each element
var leftArray = (Array)leftData;
var rightArray = (Array)rightData;
if (leftArray.Length != rightArray.Length)
{
return; // If the sizes are different, we probably can't compare them
}
for (var i = 0; i < leftArray.Length; i++)
{
CompareBlocks(leftArray.GetValue(i), leftVersion, rightArray.GetValue(i), rightVersion, result, tagQueue);
}
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(List <>))
{
if (type.GenericTypeArguments[0].IsPrimitive)
{
return;
}
// If the objects are lists, then loop through each element
var countProperty = type.GetProperty("Count");
var leftCount = (int)countProperty.GetValue(leftData);
var rightCount = (int)countProperty.GetValue(rightData);
if (leftCount != rightCount)
{
return; // If the sizes are different, we probably can't compare them
}
var getItem = type.GetMethod("get_Item");
for (var i = 0; i < leftCount; i++)
{
var leftItem = getItem.Invoke(leftData, new object[] { i });
var rightItem = getItem.Invoke(rightData, new object[] { i });
CompareBlocks(leftItem, leftVersion, rightItem, rightVersion, result, tagQueue);
}
}
else if (type.GetCustomAttributes(typeof(TagStructureAttribute), false).Length > 0)
{
// The objects are structures
var left = new TagFieldEnumerator(new TagStructureInfo(leftData.GetType(), leftVersion));
var right = new TagFieldEnumerator(new TagStructureInfo(rightData.GetType(), rightVersion));
while (left.Next() && right.Next())
{
// Keep going on the left until the field is on the right
while (!VersionDetection.IsBetween(rightVersion, left.MinVersion, left.MaxVersion))
{
if (!left.Next())
{
return;
}
}
// Keep going on the right until the field is on the left
while (!VersionDetection.IsBetween(leftVersion, right.MinVersion, right.MaxVersion))
{
if (!right.Next())
{
return;
}
}
if (left.Field.MetadataToken != right.Field.MetadataToken)
{
throw new InvalidOperationException("WTF, left and right fields don't match!");
}
// Process the fields
var leftFieldData = left.Field.GetValue(leftData);
var rightFieldData = right.Field.GetValue(rightData);
CompareBlocks(leftFieldData, leftVersion, rightFieldData, rightVersion, result, tagQueue);
}
}
}
