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Code Issues Projects Releases Wiki Activity

website-test: make diff resolver use more context to avoid ambiguities (#3883)

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Tim Kurdov 2025-07-20 00:00:44 +00:00 committed by GitHub
parent b58a8748a0
commit cf03715a66
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GPG Key ID: B5690EEEBB952194
1 changed files with 16 additions and 17 deletions
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33
tools/website-test/build.rs
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@ -50,15 +50,21 @@ fn apply_diff(src: &mut String, preamble: &str, added: &str, removed: &str) -> R
location to insert:\n{added}\nIn the following text:\n{src}",
);
let mut matches = src.match_indices(if preamble.is_empty() {
removed
} else {
preamble
});
let Some((preamble_start, _)) = matches.next() else {
let mut matches = src
.match_indices(preamble)
.filter_map(|(chunk_start, chunk)| {
let removed_start = chunk_start + chunk.len();
let removed_end = removed_start + removed.len();
src.get(removed_start..removed_end)
.eq(&Some(removed))
.then_some((removed_start, removed_end))
});
let Some((removed_start, removed_end)) = matches.next() else {
e!(
"Failure on applying a diff: \ncouldn't find the following text:\n{preamble}\n\nIn \
the following text:\n{src}"
"Failure on applying a diff: \nCouldn't find the following preamble:\n{preamble}\nIn \
the following text:\n{src}\nWhile trying to remove the following \
text:\n{removed}\nAnd add the following:\n{added}"
)
};
@ -66,17 +72,10 @@ fn apply_diff(src: &mut String, preamble: &str, added: &str, removed: &str) -> R
matches.next().is_none(),
"Failure on applying a diff: \nAmbiguous preamble:\n{preamble}\nIn the following \
text:\n{src}\nWhile trying to remove the following text:\n{removed}\nAnd add the \
following:\n{added}\n"
following:\n{added}"
);
let preamble_end = preamble_start + preamble.len();
assert!(
src.get(preamble_end..preamble_end + removed.len()) == Some(removed),
"Failure on applying a diff: \nText to remove not found:\n{removed}\n\nIn the following \
text:\n{src}",
);
src.replace_range(preamble_end..preamble_end + removed.len(), added);
src.replace_range(removed_start..removed_end, added);
Ok(())
}