将字符串按照指定分隔符分割

函数调用方式举例

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string myStr = "abc_def_ght";
vector<string> seg_str = split(myStr, "_");

头文档,函数定义

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#ifndef __SPLIT_H_
#define __SPLIT_H_
#include <string>
#include <vector>
#include <sstream>
#include <string.h>
//split a string on a single delimiter character (delim)
std::vector<std::string>& split(const std::string &s, char delim, std::vector<std::string> &elems);
std::vector<std::string> split(const std::string &s, char delim);
//split a string on any character found in the string of delimiters (delims)
std::vector<std::string>& split(const std::string &s, const std::string& delims, std::vector<std::string> &elems);
std::vector<std::string> split(const std::string &s, const std::string& delims);
#endif //__SPLIT_H_

C++文档,函数实现

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#include "split.h"
std::vector<std::string> &split(const std::string &s, char delim, std::vector<std::string> &elems) {
std::stringstream ss(s);
std::string item;
while(std::getline(ss, item, delim)) {
elems.push_back(item);
}
return elems;
}
std::vector<std::string> split(const std::string &s, char delim) {
std::vector<std::string> elems;
return split(s, delim, elems);
}
std::vector<std::string> &split(const std::string &s, const std::string& delims, std::vector<std::string> &elems) {
char* tok;
char cchars [s.size()+1];
char* cstr = &cchars[0];
strcpy(cstr, s.c_str());
tok = strtok(cstr, delims.c_str());
while (tok != NULL) {
elems.push_back(tok);
tok = strtok(NULL, delims.c_str());
}
return elems;
}
std::vector<std::string> split(const std::string &s, const std::string& delims) {
std::vector<std::string> elems;
return split(s, delims, elems);
}