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Limit fuzzy searching to a depth of 10.

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Avoids choking when query string becomes long and there are excessively
long site name entries.
This commit is contained in:
Maarten Billemont
2020-05-23 12:14:22 -04:00
parent 7091e2ee1b
commit 8582c934c2
6 changed files with 51 additions and 53 deletions
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26
platform-darwin/Source/Mac/MPSitesWindowController.m
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@@ -611,22 +611,20 @@
return;
}
static NSRegularExpression *fuzzyRE;
static dispatch_once_t once = 0;
dispatch_once( &once, ^{
fuzzyRE = [NSRegularExpression regularExpressionWithPattern:@"(.)" options:0 error:nil];
} );
prof_new( @"updateSites" );
NSString *queryString = self.siteField.stringValue;
NSString *queryPattern = [[queryString stringByReplacingMatchesOfExpression:fuzzyRE withTemplate:@"*$1"] stringByAppendingString:@"*"];
NSMutableArray *queryGroups = [NSMutableArray new];
NSMutableString *queryPattern = [NSMutableString new];
[queryString enumerateSubstringsInRange: NSMakeRange(0, [queryString length]) options: NSStringEnumerationByComposedCharacterSequences
usingBlock: ^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
if (substringRange.location < 10) {
[queryGroups addObject:substring];
[queryPattern appendString:@"*"];
}
[queryPattern appendString:substring];
}];
[queryPattern appendString:@"*"];
prof_rewind( @"queryPattern" );
NSMutableArray *fuzzyGroups = [NSMutableArray new];
[fuzzyRE enumerateMatchesInString:queryString options:0 range:NSMakeRange( 0, queryString.length )
usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {
[fuzzyGroups addObject:[queryString substringWithRange:result.range]];
}];
prof_rewind( @"fuzzyRE" );
[MPMacAppDelegate managedObjectContextPerformBlock:^(NSManagedObjectContext *context) {
prof_rewind( @"moc" );
@@ -648,7 +646,7 @@
BOOL exact = NO;
NSMutableArray *newSites = [NSMutableArray arrayWithCapacity:[siteResults count]];
for (MPSiteEntity *site in siteResults) {
[newSites addObject:[[MPSiteModel alloc] initWithEntity:site fuzzyGroups:fuzzyGroups]];
[newSites addObject:[[MPSiteModel alloc] initWithEntity:site queryGroups:queryGroups]];
exact |= [site.name isEqualToString:queryString];
}
prof_rewind( @"newSites: %u, exact: %d", (uint)[siteResults count], exact );