[英]C++ Tokenize String
I'm looking for a simple way to tokenize string input without using non default libraries such as Boost, etc.我正在寻找一种简单的方法来标记字符串输入,而不使用非默认库(如 Boost 等)。
For example, if the user enters forty_five, I would like to seperate forty and five using the _ as the delimiter.例如,如果用户输入 forty_five,我想使用 _ 作为分隔符来分隔四十和五。
To convert a string to a vector of tokens (thread safe):将字符串转换为标记向量(线程安全):
std::vector<std::string> inline StringSplit(const std::string &source, const char *delimiter = " ", bool keepEmpty = false)
{
std::vector<std::string> results;
size_t prev = 0;
size_t next = 0;
while ((next = source.find_first_of(delimiter, prev)) != std::string::npos)
{
if (keepEmpty || (next - prev != 0))
{
results.push_back(source.substr(prev, next - prev));
}
prev = next + 1;
}
if (prev < source.size())
{
results.push_back(source.substr(prev));
}
return results;
}
Look at this tutorial, which is by far the best tutorial on tokenization that I have found so far.看看这个教程,这是迄今为止我发现的最好的标记化教程。 It covers the best practices in the implementation of different methods that include using getline() and find_first_of() in C++ std, and strtok() in C.它涵盖了实施不同方法的最佳实践,包括在 C++ std 中使用getline()和find_first_of() ,以及在 C 中使用strtok() 。
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