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Merge pull request #2342 from quicksilver/qssense-fixup
QSSense fixup
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // | ||
| // QSense.m | ||
| // QSqSense | ||
| // | ||
| // Created by Alcor on 11/22/04. | ||
| // Copyright 2004 Blacktree. All rights reserved. | ||
| // | ||
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| #import "QSSense.h" | ||
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| #define MIN_ABBR_OPTIMIZE 0 | ||
| #define IGNORED_SCORE 0.9 | ||
| #define SKIPPED_SCORE 0.15 | ||
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| CGFloat QSScoreForAbbreviationWithRanges(CFStringRef str, CFStringRef abbr, id mask, CFRange strRange, CFRange abbrRange); | ||
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| CGFloat QSScoreForAbbreviation(CFStringRef str, CFStringRef abbr, id mask) { | ||
| return QSScoreForAbbreviationWithRanges(str, abbr, mask, CFRangeMake(0, CFStringGetLength(str)), CFRangeMake(0, CFStringGetLength(abbr))); | ||
| } | ||
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| CGFloat QSScoreForAbbreviationWithRanges(CFStringRef str, CFStringRef abbr, id mask, CFRange strRange, CFRange abbrRange) { | ||
| if (!abbrRange.length) | ||
| return IGNORED_SCORE; //deduct some points for all remaining letters | ||
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| if (abbrRange.length > strRange.length) | ||
| return 0.0; | ||
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| static CFCharacterSetRef wordSeparator = NULL; | ||
| static CFCharacterSetRef uppercase = NULL; | ||
| static dispatch_once_t onceToken; | ||
| dispatch_once(&onceToken, ^{ | ||
| wordSeparator = CFCharacterSetCreateMutableCopy(NULL, CFCharacterSetGetPredefined(kCFCharacterSetWhitespace)); | ||
| CFCharacterSetAddCharactersInString((CFMutableCharacterSetRef)wordSeparator, (CFStringRef)@"."); | ||
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| uppercase = CFCharacterSetGetPredefined(kCFCharacterSetUppercaseLetter); | ||
| }); | ||
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| // Create an inline buffer version of str. Will be used in loop below | ||
| // for faster lookups. | ||
| CFStringInlineBuffer inlineBuffer; | ||
| CFStringInitInlineBuffer(str, &inlineBuffer, strRange); | ||
| CFLocaleRef userLoc = CFLocaleCopyCurrent(); | ||
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| CGFloat score = 0.0, remainingScore = 0.0; | ||
| CFIndex i, j; | ||
| CFRange matchedRange, remainingStrRange, adjustedStrRange = strRange; | ||
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| // Search for steadily smaller portions of the abbreviation | ||
| for (i = abbrRange.length; i > 0; i--) { | ||
| CFStringRef curAbbr = CFStringCreateWithSubstring (NULL, abbr, CFRangeMake(abbrRange.location, i) ); | ||
| // terminality | ||
| // axeen | ||
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| BOOL found = CFStringFindWithOptionsAndLocale(str, curAbbr, | ||
| CFRangeMake(adjustedStrRange.location, adjustedStrRange.length - abbrRange.length + i), | ||
| kCFCompareCaseInsensitive | kCFCompareDiacriticInsensitive | kCFCompareLocalized, | ||
| userLoc, &matchedRange); | ||
| CFRelease(curAbbr); | ||
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| if (!found) { | ||
| continue; | ||
| } | ||
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| if (mask) { | ||
| [mask addIndexesInRange:NSMakeRange(matchedRange.location, matchedRange.length)]; | ||
| } | ||
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| remainingStrRange.location = matchedRange.location + matchedRange.length; | ||
| remainingStrRange.length = strRange.location + strRange.length - remainingStrRange.location; | ||
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| // Search what is left of the string with the rest of the abbreviation | ||
| remainingScore = QSScoreForAbbreviationWithRanges(str, abbr, mask, remainingStrRange, CFRangeMake(abbrRange.location + i, abbrRange.length - i)); | ||
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| if (remainingScore) { | ||
| score = remainingStrRange.location-strRange.location; | ||
| // ignore skipped characters if is first letter of a word | ||
| if (matchedRange.location > strRange.location) { | ||
| // if some letters were skipped | ||
| UniChar previousChar = CFStringGetCharacterFromInlineBuffer(&inlineBuffer, matchedRange.location - 1); | ||
| UniChar character = CFStringGetCharacterFromInlineBuffer(&inlineBuffer, matchedRange.location); | ||
| if (CFCharacterSetIsCharacterMember(wordSeparator, previousChar)) { | ||
| // We're on the first letter of a word | ||
| for (j = matchedRange.location - 2; j >= strRange.location; j--) { | ||
| if (CFCharacterSetIsCharacterMember(wordSeparator, CFStringGetCharacterFromInlineBuffer(&inlineBuffer, j))) | ||
| score--; | ||
| else | ||
| score -= SKIPPED_SCORE; | ||
| } | ||
| } else if (CFCharacterSetIsCharacterMember(uppercase, character)) { | ||
| for (j = matchedRange.location - 1; j >= strRange.location; j--) { | ||
| if (CFCharacterSetIsCharacterMember(uppercase, CFStringGetCharacterFromInlineBuffer(&inlineBuffer, j))) | ||
| score--; | ||
| else | ||
| score -= SKIPPED_SCORE; | ||
| } | ||
| } else { | ||
| score -= (matchedRange.location-strRange.location)/2; | ||
| } | ||
| } | ||
| score += remainingScore * remainingStrRange.length; | ||
| score /= strRange.length; | ||
| CFRelease(userLoc); | ||
| return score; | ||
| } | ||
| } | ||
| CFRelease(userLoc); | ||
| return 0; | ||
| } |
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