mirror of
https://github.com/storytold/craft-libs.git
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Dylan M. Taylor
dca2a2cd8e
lightcraft-meta at 5b61ce1e, as one crate with a module per format: exif (read, write, maker-note lens, focus point, tag listing), iptc, xmp (parse, write, merge), gpx, and the JPEG, PNG, WebP, TIFF, RAF and CR3 containers. They share Metadata, DateTime, Gps and Orientation. Changed in the move: - TIFF comes from craft-tiff; Point, Rect and Orientation are the crate's own. - The app namespace is a parameter: parse_xmp_with, write_xmp_with and MergeRules::namespaces take it, and XmpData no longer has lc_settings. - The HEIF, PSD and MRW readers stay out, since craft-heif, craft-psd and craft-raw read those containers; from_embedded takes the blocks they find.
71 lines
3.3 KiB
Rust
71 lines
3.3 KiB
Rust
use craft_metadata::{MergeRules, Metadata, XmpNamespace, XmpWrite, extract, merge_xmp, parse_iptc, parse_xmp_with, read_exif, write_xmp_with};
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const LC: XmpNamespace = XmpNamespace { prefix: "lc", uri: "http://ns.example.com/lc/1.0/" };
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fn write_xmp(meta: &Metadata, settings: Option<&str>) -> String {
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let properties: Vec<(&str, &str)> = settings.map(|s| ("settings", s)).into_iter().collect();
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write_xmp_with(meta, &XmpWrite { toolkit: "Editor", namespace: Some(LC), properties: &properties })
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}
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fn parse_xmp(s: &str) -> Result<craft_metadata::XmpData, craft_metadata::XmpError> {
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parse_xmp_with(s, &[LC])
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}
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fn settings(d: &craft_metadata::XmpData) -> Option<String> {
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d.properties.get("lc:settings").and_then(|v| v.first()).cloned()
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}
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use proptest::prelude::*;
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proptest! {
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#![proptest_config(ProptestConfig { cases: 1500, .. ProptestConfig::default() })]
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/// Random bytes behind each container's magic: reading them yields whatever can be read and
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/// never panics.
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#[test]
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fn random_containers_never_panic(mut data in proptest::collection::vec(any::<u8>(), 0..600), kind in 0usize..7) {
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let heads: [&[u8]; 7] = [b"\xff\xd8\xff\xe1", b"\x89PNG\r\n\x1a\n", b"RIFF\0\0\0\0WEBP", b"II*\0", b"MM\0*", b"\0\0\0\x18ftypcrx ", b"\0\0\0\x18ftypheic"];
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let h = heads[kind];
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if data.len() >= h.len() {
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data[..h.len()].copy_from_slice(h);
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}
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let _ = extract(&data);
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let _ = read_exif(&data);
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let _ = parse_iptc(&data);
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}
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#[test]
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fn random_text_xmp_never_panics(s in ".{0,400}") {
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let _ = parse_xmp(&s);
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}
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/// Merging into arbitrary (also damaged) packets never panics, and a merge that succeeds
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/// reads back with the written values.
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#[test]
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fn merge_never_panics(cut in 0usize..900, junk in ".{0,20}", rating in 0i8..=5) {
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let base = write_xmp(&Metadata { title: Some("t".into()), rating: Some(1), ..Default::default() }, Some("{}"));
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let mut s: String = base.chars().take(cut).collect();
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s.push_str(&junk);
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s.extend(base.chars().skip(cut));
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let fresh = write_xmp(&Metadata { rating: Some(rating), ..Default::default() }, Some("{\"x\":1}"));
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let rules = MergeRules { owned: &["xmp:Rating", "dc:title", "lc:*"], owned_if_present: &[], namespaces: &[LC] };
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if let Ok(out) = merge_xmp(&s, &fresh, rules) {
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let d = parse_xmp(&out).unwrap();
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prop_assert_eq!(d.metadata.rating, Some(rating));
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prop_assert_eq!(settings(&d), Some("{\"x\":1}".to_string()));
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}
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}
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#[test]
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fn user_text_roundtrips(title in "[a-zA-Z0-9 &<>\"'éü€;|/\\\\]{1,40}", kw in proptest::collection::vec("[a-zA-Z0-9 &<>\"'|]{1,12}", 0..5), rating in -1i8..=5) {
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let title = title.trim().to_string();
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prop_assume!(!title.is_empty());
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let kw: Vec<String> = kw.into_iter().map(|k| k.trim().to_string()).filter(|k| !k.is_empty()).collect();
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let m = Metadata { title: Some(title.clone()), keywords: kw.clone(), rating: Some(rating), ..Default::default() };
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let d = parse_xmp(&write_xmp(&m, Some(&title))).unwrap();
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prop_assert_eq!(settings(&d), Some(title.clone()));
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prop_assert_eq!(d.metadata.title, Some(title));
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prop_assert_eq!(d.metadata.keywords, kw);
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prop_assert_eq!(d.metadata.rating, Some(rating));
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}
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}
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