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Limit preview length

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Jimmy Cai 2021-12-29 14:08:03 +00:00 committed by GitHub
parent d0df82e8c3
commit 0c19a0370b
1 changed files with 16 additions and 4 deletions
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20
assets/ts/search.tsx
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@ -58,13 +58,14 @@ class Search {
this.bindSearchForm(); this.bindSearchForm();
} }
private static processMatches(str: string, matches: match[]): string[] { private static processMatches(str: string, matches: match[], charLimit = 140): string[] {
matches.sort((a, b) => { matches.sort((a, b) => {
return a.start - b.start; return a.start - b.start;
}); });
let i = 0, let i = 0,
lastIndex = 0; lastIndex = 0,
charCount = 0;
let resultArray: string[] = []; let resultArray: string[] = [];
@ -75,6 +76,8 @@ class Search {
if (item.start - 20 > lastIndex) { if (item.start - 20 > lastIndex) {
resultArray.push(`${replaceHTMLEnt(str.substring(lastIndex, lastIndex + 20))}`); resultArray.push(`${replaceHTMLEnt(str.substring(lastIndex, lastIndex + 20))}`);
resultArray.push(` [...] ${replaceHTMLEnt(str.substring(item.start - 20, item.start))}`); resultArray.push(` [...] ${replaceHTMLEnt(str.substring(item.start - 20, item.start))}`);
charCount += item.start - lastIndex + 40;
} }
else { else {
resultArray.push(replaceHTMLEnt(str.substring(lastIndex, item.start))); resultArray.push(replaceHTMLEnt(str.substring(lastIndex, item.start)));
@ -90,12 +93,16 @@ class Search {
} }
resultArray.push(`<mark>${replaceHTMLEnt(str.substring(item.start, end))}</mark>`); resultArray.push(`<mark>${replaceHTMLEnt(str.substring(item.start, end))}</mark>`);
charCount += end - item.start;
i = j; i = j;
lastIndex = end; lastIndex = end;
if (charCount > charLimit) break;
} }
resultArray.push(replaceHTMLEnt(str.substring(lastIndex))); if (lastIndex < str.length)
resultArray.push(`${replaceHTMLEnt(str.substring(lastIndex, Math.min(lastIndex + 20, str.length)))} [...]`);
return resultArray; return resultArray;
} }
@ -136,7 +143,12 @@ class Search {
} }
if (titleMatches.length > 0) result.title = Search.processMatches(result.title, titleMatches).join(''); if (titleMatches.length > 0) result.title = Search.processMatches(result.title, titleMatches).join('');
if (contentMatches.length > 0) result.preview = Search.processMatches(result.content, contentMatches).join(''); if (contentMatches.length > 0) {
result.preview = Search.processMatches(result.content, contentMatches).join('');
}
else {
result.preview = replaceHTMLEnt(result.content.substring(0, 140));
}
result.matchCount = titleMatches.length + contentMatches.length; result.matchCount = titleMatches.length + contentMatches.length;
if (result.matchCount > 0) results.push(result); if (result.matchCount > 0) results.push(result);