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Handle overlapping replacements

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This commit is contained in:
René Pfeuffer
2020-06-30 11:00:36 +02:00
parent a95ececec9
commit 6df62788a1
2 changed files with 45 additions and 1 deletions
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13
scm-ui/ui-webapp/src/repos/components/changesets/textSplitAndReplace.ts
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@@ -34,6 +34,14 @@ type PartToReplace<T> = {
replacement: T;
};
function hasConflict<T>(alreadyFoundReplacements: PartToReplace<T>[], newReplacement: PartToReplace<T>) {
return !!alreadyFoundReplacements.find(
existing =>
(existing.start <= newReplacement.start && existing.start + existing.length > newReplacement.start) ||
(newReplacement.start <= existing.start && newReplacement.start + newReplacement.length > existing.start)
);
}
export default function textSplitAndReplace<T>(
text: string,
replacements: Replacement<T>[],
@@ -47,7 +55,10 @@ export default function textSplitAndReplace<T>(
const start = text.indexOf(replacement.textToReplace, lastIndex);
if (start >= 0) {
const length = replacement.textToReplace.length;
partsToReplace.push({ start, length, replacement: replacement.replacement });
const newReplacement = { start, length, replacement: replacement.replacement };
if (!hasConflict(partsToReplace, newReplacement)) {
partsToReplace.push(newReplacement);
}
lastIndex = start + length;
} else {
lastIndex = -1;