Add STDF and ATDF file type detection

README.md

@@ -180,6 +180,8 @@ assert_eq!(kind.extension(), "foo");
 - **msi** - `application/x-ole-storage`
 - **cpio** - `application/x-cpio`
 - **par2** - `application/x-par2`
+- **stdf** - `application/x-stdf`
+- **atdf** - `application/x-atdf`
 
 #### Book
 

src/map.rs

@@ -93,6 +93,15 @@ matcher_map!(
         "der",
         matchers::app::is_der
     ),
+    // STDF (Archive type) must be placed here, before COFF matcher.
+    // STDF little endian starts with 0x00 0x02 which matches COFF IA64 (0x00 0x02).
+    // Since STDF checks 4 bytes (more specific) vs COFF's 2 bytes, STDF must be checked first.
+    (
+        MatcherType::Archive,
+        "application/x-stdf",
+        "stdf",
+        matchers::archive::is_stdf
+    ),
     (
         MatcherType::App,
         "application/x-executable",
@@ -606,6 +615,12 @@ matcher_map!(
         "cpio",
         matchers::archive::is_cpio
     ),
+    (
+        MatcherType::Archive,
+        "application/x-atdf",
+        "atdf",
+        matchers::archive::is_atdf
+    ),
     // Text
     (
         MatcherType::Text,

src/matchers/archive.rs

@@ -322,3 +322,17 @@ pub fn is_cpio(buf: &[u8]) -> bool {
         && buf[4] == 0x30
         && buf[5] == 0x31) // newc format
 }
+
+/// Returns whether a buffer is an STDF file.
+/// STDF = Standard Test Data Format (binary)
+pub fn is_stdf(buf: &[u8]) -> bool {
+    buf.len() > 3
+        && ((buf[0] == 0x00 && buf[1] == 0x02 && buf[2] == 0x00 && buf[3] == 0x0A) // Little endian
+            || (buf[0] == 0x02 && buf[1] == 0x00 && buf[2] == 0x00 && buf[3] == 0x0A)) // Big endian
+}
+
+/// Returns whether a buffer is an ATDF file.
+/// ATDF = Advanced Test Data Format (text)
+pub fn is_atdf(buf: &[u8]) -> bool {
+    buf.len() > 4 && buf[..5] == *b"FAR:A"
+}

testdata/sample.atdf

@@ -0,0 +1,5 @@
+FAR:A|4|2|
+MIR:123456|DMASEC3171WCQ3_101_F7O|Test/ASEC/A1/OQC/REV101/|STOLSI-OQC-01|OQC
+ |10:44:54 26-Nov-2025|11:41:46 26-Nov-2025|stolsiop|P|0|07|||||||||R|F7O|||
+ ||||||||||||||
+MRR:10:28:39 3-Dec-2025|||

tests/archive.rs

@@ -26,3 +26,6 @@ test_format!(
     "sample.skippable.zst"
 );
 test_format!(Archive, "application/x-par2", "par2", par2, "sample.par2");
+test_format!(Archive, "application/x-stdf", "stdf", stdf_le, "sample_le.stdf");
+test_format!(Archive, "application/x-stdf", "stdf", stdf_be, "sample_be.stdf");
+test_format!(Archive, "application/x-atdf", "atdf", atdf, "sample.atdf");