匹配的过程是一个重难点，分别进行汉字直接匹配、拼音全拼匹配、拼音简拼匹配
+ (WPFSearchResultModel *)searchEffectiveResultWithSearchString:(NSString *)searchStrLower
nameString:(NSString *)nameStrLower
completeSpelling:(NSString *)completeSpelling
initialString:(NSString *)initialString
pinyinLocationString:(NSString *)pinyinLocationString
initialLocationString:(NSString *)initialLocationString {
WPFSearchResultModel *searchModel = [[WPFSearchResultModel alloc] init];
NSArray *completeSpellingArray = [pinyinLocationString componentsSeparatedByString:@","];
NSArray *pinyinFirstLetterLocationArray = [initialLocationString componentsSeparatedByString:@","];
// 完全中文匹配范围
NSRange chineseRange = [nameStrLower rangeOfString:searchStrLower];
// 拼音全拼匹配范围
NSRange complateRange = [completeSpelling rangeOfString:searchStrLower];
// 拼音首字母匹配范围
NSRange initialRange = [initialString rangeOfString:searchStrLower];
// 汉字直接匹配
if (chineseRange.length!=0) {
searchModel.highlightedRange = chineseRange;
searchModel.matchType = MatchTypeChinese;
return searchModel;
}
NSRange highlightedRange = NSMakeRange(0, 0);
// MARK: 拼音全拼匹配
if (complateRange.length != 0) {
if (complateRange.location == 0) {
// 拼音首字母匹配从0开始，即搜索的关键字与该数据源第一个汉字匹配到，所以高亮范围从0开始
highlightedRange = NSMakeRange(0, [completeSpellingArray[complateRange.length-1] integerValue] +1);
} else {
/** 如果该拼音字符是一个汉字的首个字符，如搜索“g”，
* 就要匹配出“gai”、“ge”等“g”开头的拼音对应的字符，
* 而不应该匹配到“wang”、“feng”等非”g“开头的拼音对应的字符
*/
NSInteger currentLocation = [completeSpellingArray[complateRange.location] integerValue];
NSInteger lastLocation = [completeSpellingArray[complateRange.location-1] integerValue];
if (currentLocation != lastLocation) {
// 高亮范围从匹配到的第一个关键字开始
highlightedRange = NSMakeRange(currentLocation, [completeSpellingArray[complateRange.length+complateRange.location -1] integerValue] - currentLocation +1);
}
}
searchModel.highlightedRange = highlightedRange;
searchModel.matchType = MatchTypeComplate;
if (highlightedRange.length!=0) {
return searchModel;
}
}
// MARK: 拼音首字母匹配
if (initialRange.length!=0) {
NSInteger currentLocation = [pinyinFirstLetterLocationArray[initialRange.location] integerValue];
NSInteger highlightedLength;
if (initialRange.location ==0) {
highlightedLength = [pinyinFirstLetterLocationArray[initialRange.length-1] integerValue]-currentLocation +1;
// 拼音首字母匹配从0开始，即搜索的关键字与该数据源第一个汉字匹配到，所以高亮范围从0开始
highlightedRange = NSMakeRange(0, highlightedLength);
} else {
highlightedLength = [pinyinFirstLetterLocationArray[initialRange.length+initialRange.location-1] integerValue]-currentLocation +1;
// 高亮范围从匹配到的第一个关键字开始
highlightedRange = NSMakeRange(currentLocation, highlightedLength);
}
searchModel.highlightedRange = highlightedRange;
searchModel.matchType = MatchTypeInitial;
if (highlightedRange.length!=0) {
return searchModel;
}
}
searchModel.highlightedRange = NSMakeRange(0, 0);
searchModel.matchType = NSIntegerMax;
return searchModel;
}
