added .rpa format support, new system extension set

Cargo.lock

@@ -321,7 +321,7 @@ checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 [[package]]
 name = "mime_guess"
 version = "2.0.4"
-source = "git+https://github.com/Lynnesbian/mime_guess#55fe99663a1b78ad5f50ffe1a9aaeb65fb2cb4ca"
+source = "git+https://github.com/Lynnesbian/mime_guess#5432b3c1991372291a5e67457cc9307c85f77bd9"
 dependencies = [
  "mime",
  "unicase",

src/extension_set.rs

@@ -18,6 +18,8 @@ pub enum ExtensionSet {
 	Text,
 	/// Extensions used for archive file formats, such as `zip`, `zst`, `gz`, etc.
 	Archives,
+	/// Extensions used for system file formats, such as `mbr`, `crash`, `dll`, etc.
+	System,
 }
 
 impl ExtensionSet {
@@ -39,6 +41,9 @@ impl ExtensionSet {
 			Self::Text => mime_guess::get_mime_extensions_str("text/*").unwrap().to_vec(),
 			// many compressed file types follow the name scheme "application/x.+compressed.*" - maybe this can be used
 			// somehow to extract extensions for compressed files from mime_guess?
+			Self::Archives => vec!["zip", "tar", "gz", "zst", "xz", "rar", "7z", "bz", "bz2", "tgz", "rpa"],
+			Self::System => vec!["com", "dll", "exe", "sys", "reg", "nt", "cpl", "msi", "efi", "bio", "rcv", "mbr", "sbf", "grub", "ko", "dylib", "pdb", "hdmp", "crash",
+			],
 			Self::Archives => vec!["zip", "tar", "gz", "zst", "xz", "rar", "7z", "bz", "bz2", "tgz"],
 		}
 	}

src/mime_db.rs

@@ -39,6 +39,10 @@ cfg_if! {
 					open_document_check(buf, "presentation")
 				});
 
+				info.add("application/x-rpa", "rpa", |buf| {
+					buf.len() >= 34 && buf.starts_with(b"RPA-") && buf[7] == b' ' && buf[24] ==b' '
+				});
+
 				info.add("image/svg+xml", "svg", |buf| {
 					// before doing the moderately expensive SVG check, we should make sure that the input is actually SGML-ish
 					// by "SGML-ish", i mean starts with anywhere from zero to ∞-1 whitespace characters, and then a less than sign,