如何从Qt中的字符串中删除重音符号或变音符号? [英] How to remove accents / diacritic marks from a string in Qt?
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问题描述
如何从Qt中的字符串中删除变音符号。例如:
How to remove diacritic marks from a string in Qt. For example, this:
QString test = QString::fromUtf8("éçàÖœ");
qDebug() << StringUtil::removeAccents(test);
应输出:
ecaOoe
推荐答案
没有简单的方法,Qt中的内置解决方案。一个简单的解决方案(在大多数情况下应该起作用)是遍历字符串,并用等效的字符串替换每个字符:
There is not straighforward, built-in solution in Qt. A simple solution, which should work in most cases, is to loop through the string and replace each character by their equivalent:
QString StringUtil::diacriticLetters_;
QStringList StringUtil::noDiacriticLetters_;
QString StringUtil::removeAccents(QString s) {
if (diacriticLetters_.isEmpty()) {
diacriticLetters_ = QString::fromUtf8("ŠŒŽšœžŸ¥µÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýÿ");
noDiacriticLetters_ << "S"<<"OE"<<"Z"<<"s"<<"oe"<<"z"<<"Y"<<"Y"<<"u"<<"A"<<"A"<<"A"<<"A"<<"A"<<"A"<<"AE"<<"C"<<"E"<<"E"<<"E"<<"E"<<"I"<<"I"<<"I"<<"I"<<"D"<<"N"<<"O"<<"O"<<"O"<<"O"<<"O"<<"O"<<"U"<<"U"<<"U"<<"U"<<"Y"<<"s"<<"a"<<"a"<<"a"<<"a"<<"a"<<"a"<<"ae"<<"c"<<"e"<<"e"<<"e"<<"e"<<"i"<<"i"<<"i"<<"i"<<"o"<<"n"<<"o"<<"o"<<"o"<<"o"<<"o"<<"o"<<"u"<<"u"<<"u"<<"u"<<"y"<<"y";
}
QString output = "";
for (int i = 0; i < s.length(); i++) {
QChar c = s[i];
int dIndex = diacriticLetters_.indexOf(c);
if (dIndex < 0) {
output.append(c);
} else {
QString replacement = noDiacriticLetters_[dIndex];
output.append(replacement);
}
}
return output;
}
请注意, noDiacriticLetters _
必须为 QStringList
,因为某些带变音符号的字符可以与两个单个字符匹配。例如œ
=> oe
Note that noDiacriticLetters_
needs to be a QStringList
since some characters with diacritic marks can match to two single characters. For example œ
=> oe
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