C++ 以多字符为分隔符分割字符串

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
#include <iostream>
#include <vector>
#include <string>
using namespace std;
char *strsep(char **stringp, const char *delim)
{
//判断stringp是否为空,提高程序的容错性
char *s;
const char *spanp;
int c, sc;
char *tok;
if ((s = *stringp)== NULL)
return (NULL);
for (tok = s;;) {
c = *s++;
spanp = delim;
do {
if ((sc =*spanp++) == c) {
if (c == 0)
s = NULL;
else
s[-1] = 0;
*stringp = s;
return (tok);
}
} while (sc != 0);
}
}
void pushToVec(std::vector<std::string>&obj,const char *param,std::string token)
{
char *p = (char*)param;
char *key_point;
while(p)
{
while ( key_point = strsep(&p,token.c_str()))//关键字为c或d，它们连续出现了
{
//函数遇到token时，key_point指向token返回
if (*key_point == 0)
continue;
else
break;
}
if (key_point)
obj.push_back(key_point);
}
}
int main()
{
vector<string> obj;
string test("145,456,789,rtyy,http:www.baidu.com;");
string token(",:.;");
//使用","号,":"号,"."号,";"做分隔符
pushToVec(obj,test.c_str(),token);
for (size_t i = 0;i< obj.size();i++)
{
cout<<obj[i]<<endl;
}
return 0;
}

1
char *strsep(char **stringp, const char *delim)