C++ wstring::erase方法代码示例

/* static */
void ConfigFile::trim( wstring& s )
{
	// Remove leading and trailing whitespace
	static const wchar_t whitespace[] = L" \n\t\v\r\f";
	s.erase( 0, s.find_first_not_of(whitespace) );
	s.erase( s.find_last_not_of(whitespace) + 1U );
}

	void GetXMLMessage(wstring &msg, wstring &type)
	{
		msg = xml_message;
		type = xml_message_type;
		xml_message.erase();
		xml_message_type.erase();
	}

static void string_strip_quotes(wstring& s)
{
    static const wchar_t* empties = L" \t\n\r";
    if (s[s.length()-1]=='"')
        s.erase(s.length()-1);
    if (s[0]=='"')
        s.erase(0,1);
}

static void string_strip(wstring& s)
{
    static const wchar_t* empties = L" \t\n\r";
    int e = s.find_last_not_of(empties);
    s.erase(e + 1);
    int b = s.find_first_not_of(empties);
    s.erase(0,b);
}

void trim(wstring& str) {
    wstring::size_type pos = str.find_last_not_of(' ');
    if(pos != string::npos) {
        str.erase(pos + 1);
        pos = str.find_first_not_of(' ');
        if(pos != string::npos) 
            str.erase(0, pos);
    }
    else 
        str.erase(str.begin(), str.end());
}

EncodingType getEncodingType( wstring& text )
{
    // UTF8
    if (text.size() >= 3
     && text[0] == (wchar_t)0xEF
     && text[1] == (wchar_t)0xBB
     && text[2] == (wchar_t)0xBF)
    {
        text.erase(0, 3);
        return(UTF8);
    }

    // UTF32_BigEndian
    if (text.size() >= 4
     && text[0] == (wchar_t)0x00
     && text[1] == (wchar_t)0x00
     && text[2] == (wchar_t)0xFE
     && text[3] == (wchar_t)0xFF)
    {
        text.erase(0, 4);
        return(UTF32_BigEndian);
    }

    // UTF32_LittleEndian
    if (text.size() >= 4
     && text[0] == (wchar_t)0xFF
     && text[1] == (wchar_t)0xFE
     && text[2] == (wchar_t)0x00
     && text[3] == (wchar_t)0x00)
    {
        text.erase(0, 4);
        return(UTF32_LittleEndian);
    }

    // UTF16_BigEndian
    if (text.size() >= 2
     && text[0] == (wchar_t)0xFE
     && text[1] == (wchar_t)0xFF)
    {
        text.erase(0, 2);
        return(UTF16_BigEndian);
    }

    // UTF16_LittleEndian
    if (text.size() >= 2
     && text[0] == (wchar_t)0xFF
     && text[1] == (wchar_t)0xFE)
    {
        text.erase(0, 2);
        return(UTF16_LittleEndian);
    }

    return(ANSI);
}

wstring trim(wstring str) {
	wstring::iterator it = str.begin();
	while (str.begin() != str.end() && *str.begin() == L' ')
		str.erase(str.begin());
	while (str.begin() != str.end()) {
		it = str.end() - 1;
		if (*it != L' ') break;
		str.erase(it);
	}
	return str;
}

//Delete white spaces from the end and the begining of the string
wstring 
Utils::trim(wstring str) { 
  wstring::iterator it;
  
  while ((str.length()>0)&&((*(it=str.begin()))==L' ')) {
     str.erase(it);
  }
  
  while ((str.length()>0)&&((*(it=(str.end()-1)))==L' ')) {
     str.erase(it);
  }

  return str;
}

void
O2Profile::
GetPubkeyW(wstring &out) const
{
	out.erase();
	PubKey.to_string(out);
}

/* -----------------------------------------------------------------------
 *  関数名  ：  cutbom
 *  機能概要：  wstring先頭にUCS-2 BOMがあったら取り除く
 * -----------------------------------------------------------------------
 */
void	cutbom(wstring &wstr)
{
	if (wstr.size() < 2)
		return;
	if (wstr[0] == (wchar_t)0xfeff || wstr[0] == (wchar_t)0xffef)
		wstr.erase(0, 1);
}

void vmsHttpFlvTrafficAnalyzer::ExtractTitleFromHtml(const vmsHttpTrafficCollector::HttpDialog *pHtmlDlg, wstring &wstrTitle)
{
	wstrTitle = L"";
	UINT codePage = 0;
	ExtractCodePageFromHtml (pHtmlDlg, codePage);
	if (!codePage)
		codePage = pHtmlDlg->codePage;

	assert (pHtmlDlg != NULL);
	if (!pHtmlDlg)
		return;

	if (pHtmlDlg->vbResponseBody.empty ())
		return;
	
	LPCSTR psz = strstrni ((LPCSTR)&pHtmlDlg->vbResponseBody [0], "<title>", pHtmlDlg->vbResponseBody.size ());
	if (psz)
	{
		psz += 7;
		LPCSTR pszEnd = (LPCSTR)&pHtmlDlg->vbResponseBody [0] + pHtmlDlg->vbResponseBody.size ();
		string strTitle;
		while (psz < pszEnd)
		{
			if (*psz != '<')
				strTitle += *psz++;
			else 
				break;
		}
		if (*psz == '<' && !strTitle.empty ())
		{
			vmsCharsets::DecodeString (strTitle.c_str (), 
				codePage ? codePage : CP_UTF8, wstrTitle);
				
			while (wstrTitle.empty () == false && wstrTitle [0] <= ' ')
				wstrTitle.erase (wstrTitle.begin ());
			while (wstrTitle.empty () == false && wstrTitle [wstrTitle.length ()-1] <= ' ')
				wstrTitle.erase (wstrTitle.end ()-1);
			for (int i = 0; i < wstrTitle.length (); i++)
			{
				if (wstrTitle [i] < ' ')
					wstrTitle [i] = ' ';
				if (i && wstrTitle [i] == ' ' && wstrTitle [i-1] == ' ')
					wstrTitle.erase (wstrTitle.begin () + i--);
			}
		}
	}
}

bool Inet::StatusCodeAnalysis(wstring sctext,int* res){
	int i,n,pos;
	wchar_t *err;
	if(pos=sctext.find(' ')==wstring::npos){
		return false;
	}
	sctext.erase(0,pos+1);
	if(pos=sctext.find(' ')==wstring::npos){
		return false;
	}
	sctext.erase(pos);
	*res=wcstol(sctext.c_str(),&err,10);
	if(lstrlen(err)!=0){
		return false;
	}
	return true;
}

void prepareString(wstring & str)
{
	str.erase(remove_if(str.begin(), str.end(), [](wchar_t const ch)
	{
		return ch == ' ' || ch == '\\' || ch == '-';
	}), str.end());
	for (wchar_t & ch : str)
		ch = tolower(ch);
}

wstring getNameFromSoundString(wstring sSoundString)
{
	size_t end = sSoundString.rfind(TEXT(".flac"));
	size_t start = sSoundString.rfind('.', end-1);
	if(start == wstring::npos || end == wstring::npos)	//Not any numbers heres
		return sSoundString;
	sSoundString.erase(start, end-start);	//Erase the numbers in the middle
	return sSoundString;	//Done
}

void StrUtils::trimleft(wstring& s )
{
	wstring::iterator it;

	for( it = s.begin(); it != s.end(); it++ )
		if( !StrUtils::isspace(*it))
			break;

	s.erase( s.begin(), it );
}