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aiongg
d8acd0579a
A long run of '&' without a nearby ';' scanned to the end of the string for every '&' (quadratic). Adds a test with a 200k-ampersand description.
25 lines
1.1 KiB
Rust
25 lines
1.1 KiB
Rust
use photocraft_engine::file_cmds::read_file_info;
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#[test]
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fn numeric_character_references_are_decoded() {
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let xmp = "<x:xmpmeta xmlns:x=\"adobe:ns:meta/\"><rdf:RDF><rdf:Description>\
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<dc:description><rdf:Alt><rdf:li xml:lang=\"x-default\">Line one
Line two © & co A &#38;</rdf:li></rdf:Alt></dc:description>\
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</rdf:Description></rdf:RDF></x:xmpmeta>";
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let info = read_file_info(Some(xmp));
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assert_eq!(info["description"], "Line one\nLine two © & co A &");
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}
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/// Many `&` with no `;` near them stay literal, and are scanned a bounded distance each (a
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/// multi-megabyte XMP once made this quadratic).
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#[test]
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fn a_long_run_of_ampersands_without_semicolons_is_left_unchanged() {
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let run = "&".repeat(200_000);
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let xmp = format!(
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"<x:xmpmeta xmlns:x=\"adobe:ns:meta/\"><rdf:RDF><rdf:Description>\
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<dc:description><rdf:Alt><rdf:li xml:lang=\"x-default\">{run}</rdf:li></rdf:Alt></dc:description>\
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</rdf:Description></rdf:RDF></x:xmpmeta>"
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);
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let info = read_file_info(Some(&xmp));
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assert_eq!(info["description"], run.as_str());
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}
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