本文整理汇总了C++中std::u16string::clear方法的典型用法代码示例。如果您正苦于以下问题：C++ u16string::clear方法的具体用法？C++ u16string::clear怎么用？C++ u16string::clear使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类std::u16string的用法示例。
在下文中一共展示了u16string::clear方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: UTF8ToUTF16
bool UTF8ToUTF16(const std::string& utf8, std::u16string& outUtf16)
{
if (utf8.empty())
{
outUtf16.clear();
return true;
}
bool ret = false;
const size_t utf16Bytes = (utf8.length()+1) * sizeof(char16_t);
char16_t* utf16 = (char16_t*)malloc(utf16Bytes);
memset(utf16, 0, utf16Bytes);
char* utf16ptr = reinterpret_cast<char*>(utf16);
const UTF8* error = nullptr;
if (llvm::ConvertUTF8toWide(sizeof(char16_t), utf8, utf16ptr, error))
{
outUtf16 = utf16;
ret = true;
}
free(utf16);
return ret;
}示例2: DecodeHeading
void UserDictionaryDecoder::DecodeHeading(IBitStream *bstr, unsigned len, std::u16string &res) {
res.clear();
unsigned symIdx;
for (size_t i = 0; i < len; i++) {
_ltHeadings.Decode(*bstr, symIdx);
unsigned sym = _headingSymbols.at(symIdx);
assert(sym <= 0xffff);
res += (char16_t)sym;
}
}示例3:
void LineEdit::IntValidator::insert(std::u16string &string,
size_t &cursor, size_t &ecursor,
char16_t data) const {
if( cursor==0 ){
if(!string.empty() && string[0]=='-')
return;
if(data=='-' && !(string.size()>=1 && string[0]=='0')){
Validator::insert(string,cursor,ecursor,data);
return;
}
if(data=='0' && ((string.size()==1 && string[0]=='-') || string.size()==0)){
Validator::insert(string,cursor,ecursor,data);
return;
}
if(('1'<=data && data<='9') || data=='-'){
Validator::insert(string,cursor,ecursor,data);
return;
}
return;
}
const size_t pos = cursor-1;
if( data=='0'
&& !(pos<string.size() && string[pos]=='-')
&& !(string.size()==1 && string[0]=='0') ){
Validator::insert(string,cursor,ecursor,data);
return;
}
if('1'<=data && data<='9'){
if(string.size()==1 && string[0]=='0'){
string.clear();
cursor = 0;
ecursor = cursor;
}
Validator::insert(string,cursor,ecursor,data);
return;
}
}示例4: DecodeArticle
bool UserDictionaryDecoder::DecodeArticle(
IBitStream *bstr,
std::u16string &res,
std::u16string const& prefix,
LenTable& ltArticles,
std::vector<char32_t>& articleSymbols)
{
unsigned len = bstr->read(16);
if (len == 0xFFFF) {
len = bstr->read(32);
}
res.clear();
unsigned symIdx;
std::vector<uint32_t> vec;
while ((unsigned)res.length() < len) {
ltArticles.Decode(*bstr, symIdx);
unsigned sym = articleSymbols.at(symIdx);
vec.push_back(sym);
if (sym >= 0x10000) {
if (sym >= 0x10040) {
unsigned startIdx = bstr->read(BitLength(len));
unsigned len = sym - 0x1003d;
res += res.substr(startIdx, len);
vec.push_back(startIdx);
} else {
unsigned startIdx = bstr->read(BitLength(prefix.length()));
unsigned len = sym - 0xfffd;
res += prefix.substr(startIdx, len);
vec.push_back(startIdx);
}
} else {
res += (char16_t)sym;
}
}
return true;
}示例5: emit
bool emit(const Token& token, std::ostream& output)
{
static bool characterMode = false;
static std::u16string characters;
bool eof = false;
if (characterMode && token.getType() != Token::Type::Character) {
output << separator << "[\"Character\",\"" << espaceString(characters) << "\"]";
separator = ",";
characterMode = false;
characters.clear();
}
switch (token.getType()) {
case Token::Type::StartTag:
output << separator << "[\"StartTag\",\"" << espaceString(token.getName()) << "\",{";
separator = ",";
for (auto i = token.getAttributes().begin(); i != token.getAttributes().end(); ++i) {
if (i != token.getAttributes().begin())
output << ',';
auto attr = *i;
output << '"' << espaceString(attr.getName()) << "\":\"" << attr.getValue() << '"';
}
output << '}';
if (token.getFlags() & Token::SelfClosing)
output << ",true";
output << ']';
break;
case Token::Type::EndTag:
output << separator << "[\"EndTag\",\"" << espaceString(token.getName()) << "\"]";
separator = ",";
break;
case Token::Type::Comment:
output << separator << "[\"Comment\",\"" << espaceString(token.getName()) << "\"]";
separator = ",";
break;
case Token::Type::Doctype:
output << separator << "[\"DOCTYPE\",\"" << espaceString(token.getName()) << "\",";
separator = ",";
if (!token.hasPublicId())
output << "null,";
else
output << '"' << espaceString(token.getPublicId()) << "\",";
if (!token.hasSystemId())
output << "null,";
else
output << '"' << espaceString(token.getSystemId()) << "\",";
output << ((token.getFlags() & Token::ForceQuirks) ? "false" : "true");
output << ']';
break;
case Token::Type::Character:
characterMode = true;
characters += token.getChar();
break;
case Token::Type::EndOfFile:
eof = true;
break;
case Token::Type::ParseError:
default:
output << separator << "\"ParseError\"";
separator = ",";
break;
}
return !eof;
}示例6: append
void utf16::encode(const std::u32string& str, std::u16string& encoded) {
encoded.clear();
for (auto&& chr : str)
append(encoded, chr);
}