ICU和字符串比较 [英] ICU and string compare
本文介绍了ICU和字符串比较的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
可以由任何人解释为什么以下比较不相等?
can anybody explain why the following compare are not equal?
void CompareTest()
{
UErrorCode status = U_ZERO_ERROR;
UChar ruleset[500]; *ruleset = 0;
int32_t rlen = 0;
UCollator *coll = ucol_open("de_DE", &status);
static const UChar rules[] = L"&\\u0000 = '' = '-'";
int32_t len=(int32_t)u_strlen(rules);
const UChar *defRules = ucol_getRules(coll, &rlen);
if(rlen > 0)
{
u_strcpy(ruleset, defRules);
}
u_strcat(ruleset, rules);
status = U_ZERO_ERROR;
UCollator *collRule = ucol_openRules(ruleset, u_strlen(ruleset), UCOL_OFF, UCOL_DEFAULT_STRENGTH,NULL, &status);
ucol_setAttribute(collRule, UCOL_NORMALIZATION_MODE, UCOL_ON, &status);
ucol_setAttribute(collRule, UCOL_STRENGTH, UCOL_QUATERNARY, &status);
UCollationResult uResult = ucol_strcoll(collRule, L"post-war", -1, L"post war", -1);
uResult = ucol_strcoll(collRule, L"post-war", -1, L"postwar", -1);
uResult = ucol_strcoll(collRule, L"ÄÖÜ", -1, L"äöü", -1);
uResult = ucol_strcoll(collRule, L"ß", -1, L"ss", -1);
}
推荐答案
您不需要执行任何规则自定义。
You don't need to do any rule customization.
UCollator * collRule = coll;
ucol_setAttribute(collRule, UCOL_NORMALIZATION_MODE, UCOL_ON, &status); // no effect for these samples.
ucol_setAttribute(collRule, UCOL_STRENGTH, UCOL_PRIMARY, &status);
ucol_setAttribute(collRule, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, &status);
结果:
post-war -> [45 43 4B 4D 53 27 49 00]
post war -> [45 43 4B 4D 53 27 49 00]
(post-war === post war) -> 0
post-war -> [45 43 4B 4D 53 27 49 00]
postwar -> [45 43 4B 4D 53 27 49 00]
(post-war === postwar) -> 0
ÄÖÜ -> [27 43 4F 00]
äöü -> [27 43 4F 00]
(ÄÖÜ === äöü) -> 0
ß -> [4B 4B 00]
ss -> [4B 4B 00]
(ß === ss) -> 0
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