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refactor: prepare for automatic compression of embedded files in krilla

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Tobias Schmitz 2025-05-10 14:28:34 +02:00
parent 0cef699f3e
commit cd659bf460
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1 changed files with 18 additions and 19 deletions
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37
crates/typst-pdf/src/embed.rs
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@ -34,7 +34,8 @@ pub(crate) fn embed_files(
},
};
let data: Arc<dyn AsRef<[u8]> + Send + Sync> = Arc::new(embed.data.clone());
let compress = should_compress(&embed.data);
// TODO: update when new krilla version lands (https://github.com/LaurenzV/krilla/pull/203)
let compress = should_compress(&embed.data).unwrap_or(true);
let file = EmbeddedFile {
path,
@ -54,12 +55,10 @@ pub(crate) fn embed_files(
Ok(())
}
fn should_compress(data: &[u8]) -> bool {
let Some(ty) = infer::get(data) else {
return true;
};
fn should_compress(data: &[u8]) -> Option<bool> {
let ty = infer::get(data)?;
match ty.matcher_type() {
infer::MatcherType::App => true,
infer::MatcherType::App => None,
infer::MatcherType::Archive => match ty.mime_type() {
#[rustfmt::skip]
"application/zip"
@ -76,8 +75,8 @@ fn should_compress(data: &[u8]) -> bool {
| "application/x-rpm"
| "application/zstd"
| "application/x-lz4"
| "application/x-ole-storage" => false,
_ => true,
| "application/x-ole-storage" => Some(false),
_ => None,
},
infer::MatcherType::Audio => match ty.mime_type() {
#[rustfmt::skip]
@ -88,12 +87,12 @@ fn should_compress(data: &[u8]) -> bool {
| "audio/x-flac"
| "audio/amr"
| "audio/aac"
| "audio/x-ape" => false,
_ => true,
| "audio/x-ape" => Some(false),
_ => None,
},
infer::MatcherType::Book => true,
infer::MatcherType::Doc => true,
infer::MatcherType::Font => true,
infer::MatcherType::Book => None,
infer::MatcherType::Doc => None,
infer::MatcherType::Font => None,
infer::MatcherType::Image => match ty.mime_type() {
#[rustfmt::skip]
"image/jpeg"
@ -104,10 +103,10 @@ fn should_compress(data: &[u8]) -> bool {
| "image/heif"
| "image/avif"
| "image/jxl"
| "image/vnd.djvu" => false,
_ => true,
| "image/vnd.djvu" => None,
_ => None,
},
infer::MatcherType::Text => true,
infer::MatcherType::Text => None,
infer::MatcherType::Video => match ty.mime_type() {
#[rustfmt::skip]
"video/mp4"
@ -115,9 +114,9 @@ fn should_compress(data: &[u8]) -> bool {
| "video/x-matroska"
| "video/webm"
| "video/quicktime"
| "video/x-flv" => false,
_ => true,
| "video/x-flv" => Some(false),
_ => None,
},
infer::MatcherType::Custom => true,
infer::MatcherType::Custom => None,
}
}