ios - iPhone SDK : Break chinese sentence into words and letters

Question

我有中文新闻提要，我想将句子分成更小的 block 以传递给 API。

我如何在 ios 中执行此操作？我已经为英语语言设置了 50 个字符的字符长度。

目前我正在使用 rangeOfString: 函数来查找点、逗号和断句。

NSString *str  = nil, *rem = nil;

str = [final substringToIndex:MAX_CHAR_Private];
rem = [final substringFromIndex:MAX_CHAR_Private];
NSRange rng = [rem rangeOfString:@"?"];
if (rng.location == NSNotFound) {
    rng = [rem rangeOfString:@"!"];
    if (rng.location == NSNotFound) {
        rng = [rem rangeOfString:@","];
        if (rng.location == NSNotFound) {
            rng = [rem rangeOfString:@"."];
            if (rng.location == NSNotFound) {
                rng = [rem rangeOfString:@" "];
            }
        }
    }
}
if (rng.location+1 + MAX_CHAR_Private > MAXIMUM_LIMIT_Private) {
    rng = [rem rangeOfString:@" "];
}

if (rng.location == NSNotFound) {
    remaining = [[final substringFromIndex:MAX_CHAR_Private] retain];
}
else{
    //NSRange rng = [rem rangeOfString:@" "];
    str = [str stringByAppendingString:[rem substringToIndex:rng.location]];
    remaining = [[final substringFromIndex:MAX_CHAR_Private + rng.location+1] retain];
}

这对于中文和日文字符无法正常工作。

Answer 1

检查 NSLinguisticTagger，它应该可以用于中文:

来自 Apple:“NSLinguisticTagger 类用于自动分割自然语言文本并用信息标记它，例如词性。它还可以标记语言、脚本、词干形式等。”

Apple 文档 NSLinguisticTagger Class Reference

另见 NSHipster NSLinguisticTagger .

另见 objc.io issue 7