字符串基本处理函数

std::string Trim(std::string str, char ch)
{
string::size_type bPos = str.find_first_not_of(ch);
string::size_type ePos = str.find_last_not_of(ch);

if(bPos == string::npos || ePos == string::npos)
return string("");

return str.substr(bPos, ePos - bPos + 1);
}

bool Split(vector<string>& strVec, string str, char ch)
{
if(str.empty())
return false;

string::size_type bpos = str.find_first_not_of(ch);
string::size_type epos = 0;

string tmp;
while(bpos != string::npos)
{
epos = str.find(ch, bpos);
if(epos != string::npos)
{
tmp = str.substr(bpos, epos - bpos);
bpos = epos + 1;
}
else
{
tmp = str.substr(bpos);
bpos = epos;
}
if(!tmp.empty())
{
strVec.push_back(tmp);
tmp.clear();
}
}
return true;
}