fabi/Syplheed-Reborn
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(formats): name font/image inner formats instead of hex

Browse Source 
inner_format_label mapped only IDXD/xml/printable-tag magics; fonts and
images fell through to a bare hex label (00010000, 89504E47, …). Recognize
the known binary signatures and return friendly short tags so the pak
browser's format column reads them: sfnt/true/typ1 → "ttf", OTTO → "otf",
ttcf → "ttc", PNG → "png", plus RIFF/DDS. Still-unidentified magics keep the
hex fallback. Shared by the CLI `pak list` and the GUI browser.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-07-11 15:24:26 +02:00
parent e17bc0216d
commit 10425aba8c
1 changed files with 23 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
crates/sylpheed-formats/src/pak.rs
View File

@@ -263,19 +263,34 @@ fn be32(b: &[u8], o: usize) -> u32 {
}
/// Best-effort human label for a decompressed entry's inner format, from its
/// first bytes: `IDXD`, `xml`, a printable 4-char tag (RATC, IXUD, LSTA, …), or
/// a hex fallback. Shared by the CLI `pak list` and the GUI pack browser.
/// first bytes: a known signature (`IDXD`, fonts, `png`, …), a printable 4-char
/// tag (RATC, IXUD, LSTA, …), or a hex fallback for still-unidentified magics.
/// Shared by the CLI `pak list` and the GUI pack browser.
pub fn inner_format_label(payload: &[u8]) -> String {
if payload.len() < 4 {
return "empty".into();
}
let m = &payload[0..4];
if m == b"IDXD" {
"IDXD".into()
} else if payload.starts_with(b"<?xml") {
"xml".into()
} else if m.iter().all(|&b| b.is_ascii_graphic()) {
// Many inner formats are 4-char tags (RATC, T8aD, IXUD, LSTA, ttcf, …).
// Known binary/text signatures → friendly short tags (so fonts/images don't
// show as bare hex like `00010000` / `89504E47`).
let known = match m {
b"IDXD" => Some("IDXD"),
b"\x89PNG" => Some("png"),
b"\x00\x01\x00\x00" | b"true" | b"typ1" => Some("ttf"), // sfnt TrueType
b"OTTO" => Some("otf"), // OpenType (CFF)
b"ttcf" => Some("ttc"), // TrueType Collection
b"RIFF" => Some("riff"),
b"DDS " => Some("dds"),
_ if payload.starts_with(b"<?xml") => Some("xml"),
_ => None,
};
if let Some(tag) = known {
return tag.into();
}
if m.iter().all(|&b| b.is_ascii_graphic()) {
// Many inner formats are 4-char tags (RATC, T8aD, IXUD, LSTA, …).
String::from_utf8_lossy(m).into_owned()
} else {
format!("{:02X}{:02X}{:02X}{:02X}", m[0], m[1], m[2], m[3])