提取两个定界符之间的数据 [英] Extract data between two delimiters

问题描述

我只想知道是否有可能拾取两个定界符（定界符为字符串）之间的数据。

I just want to know whether it is possible to pick up the data that is present between two delimiters (delimiter being a string).

例如原始字符串如下

<message%20type%3D"info"%20code%3D"20005">%20<text>Conference%20successfully%20modified</text>%20<data>0117246</data>%20%20</message>%20

，我希望< text> 标记之间存在数据。我需要数据的字符串可以不同。字符串也可以像这样

and I want the data that is present between <text> tags. The string from which i need the data can be different. The string can also be like this

<message%20type%3D"info"%20code%3D"20001">%20<text>Conference%20deleted</text%20%20<vanity>0116976</vanity>%20</message>%20<message%20type%3D"info"%20code%3D"20002">%20<text>Number%20of%20conferences%20deleted</text>%20<data>1</data>%20%20</message>%20  

但我总是需要< text> 标记之间的数据。

but I always need the data present between the <text> tags.

那么用C语言有可能还是有其他选择？

So is it possible in C language or is there any alternative?

推荐答案

我会选择 strstr（） 。

例如：

#include <stdio.h>
#include <string.h>

int main(void) {
    char data[] = "<message%20type%3D\"info\"%20code"
                  "%3D\"20005\">%20<text>Conference%"
                  "20successfully%20modified</text>%"
                  "20<data>0117246</data>%20%20</mes"
                  "sage>%20";
    char *p1, *p2;
    p1 = strstr(data, "<text>");
    if (p1) {
        p2 = strstr(p1, "</text>");
        if (p2) printf("%.*s\n", p2 - p1 - 6, p1 + 6);
    }
    return 0;
}

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