gim, mtg, scn and sfx are all XML format files and share the same key data and filter method. Here are some rule examples.   

! 1.png
1. XML Dom Element Reading name: submesh count in a gim file should be no more than five. xpath: * /SubMesh. {dom} condition: ['Satisfy the expression', 'len(d) <= 5'], rpath: .* gim$,

Rules: rpath: . gim$, to find the files which satisfy the regular expression, the file filter will be carried out in the whole directory: re.match (rpath, file path). The files that meet the requirement will be executed on.
xpath:
/SubMesh. {dom} , extracts the file key data. XML file formats are showed in the above picture. SubMesh is in the second layer. */SubMesh points towards label. Or you can filter data through root/SubMesh, extract dom elements and use {dom} to get all the nodes under SubMesh. Data retrieved in the xpth, data=[], will be data = [,], if there are two SubMesh.
condition: ['Satisfy the expression', 'len(d) <= 5'] retrieves a data list. The condition is a requirement in the list. Child mesh count in the picture is five and thus it satisfies the requirement.

2. Reading and Filtering XML Attributes and Second-Level Files name: gim associated files check (read attribute values) rpath: . gim$, xpath: / * / FileName:value filter:artfunc_check_combine_gimsfx condition: ['Satisfy the expression', 'len(d) > 0'], func_str:
! 2.png

Rules:
rpath: . gim$ finds gim files.
xpath:
/ * /FileName:value reads attributes, finds attributes such as FileName, FileName:value through fuzzy matches and retrieves the value under FileName. The data we obtained is a file path. There are two ways to reparse the file. Here we choose filter.
filter:artfunc_check_combine_gimsfx. The file are reparsed by a customized function in filter to check for any associated files. If associated file does not exist, the checking fails according to the rules.

3. XML File Tag Value
name: gim file value extraction (numeric values under the tag) rpath: .* gim$,
xpath: * /TEST1.name
condition: ['Satisfy the expression', 'len(d) > 1'],

Rules:
rpath . gim$, filter files
xpath:
/TEST1.name. To get the value of name in TEST1, we can apply */TEST1.name.
condition: ['Satisfy the expression', 'len(d) > 1'], and custom rules according to the value it returns.