zgrf.filetable.common source code

1 module zgrf.filetable.common;
2 
3 import zgrf.types : GRFFile;
4 
5 /**
6  * Checks if a given [GRFFile] matches one of our filters.
7  *
8  * The check converts the name of the file to lowercase.
9  *
10  * Params:
11  *  file = The file to check
12  *  filterList = The array of filters to check against
13  *
14  * Returns:
15  *  Whether the file matches one of the provided filters
16  */
17 bool inFilter(in ref GRFFile file, in ref const(wstring)[] filterList)
18 {
19     if (filterList.length == 0)
20     {
21         return true;
22     }
23     import std.uni : toLower;
24 
25     auto filenameLower = file.name.toLower;
26     foreach (const filterString; filterList)
27     {
28         import std.algorithm : startsWith;
29 
30         if (filenameLower.startsWith(filterString))
31         {
32             return true;
33         }
34     }
35     return false;
36 }
37 
38 /**
39  * Checks if a given [GRFFile] is a directory.
40  *
41  * Params:
42  *  file = The [GRFFile] to check
43  *
44  * Returns:
45  *  Whether the file is a directory or not
46  */
47 bool isDirectory(in ref GRFFile file) pure @safe @nogc
48 {
49     import zgrf.constants : FileFlags;
50 
51     return ((file.flags & FileFlags.FILE) == 0 ||
52             file.compressed_size_padded == 0x0714 ||
53             file.compressed_size == 0x0449 ||
54             file.size == 0x055C ||
55             file.offset == 0x058A);
56 }