将CURL结果放入字符串而不是STDOUT? [英] putting CURL result in a string and not STDOUT?
本文介绍了将CURL结果放入字符串而不是STDOUT?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有以下卷曲代码,该代码向网站发出请求并从中检索数据,效果很好,但是我想将数据存储在字符串中,而不是在输出窗口中.有什么主意吗?
I have the following curl code, which make a request to website and retrieve data from it, it works well, but I want to store my data in a string and not in the output window. Any idea?
#include <stdio.h>
#include <curl/curl.h>
int main(void)
{
CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://api.hostip.info/get_html.php?ip=xxx.xxx.xx.xxx");
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
res = curl_easy_perform(curl);
if(res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
curl_easy_cleanup(curl);
}
return 0;
}
推荐答案
int http_get_response(void *buffer, size_t size, size_t rxed, char **msg_in)
{
char *c;
if (asprintf(&c, "%s%.*s", *msg_in, size * rxed, buffer) == -1) {
free(*msg_in);
msg_in = NULL;
return -1;
}
free(*msg_in);
*msg_in = c;
return size * rxed;
}
并在主目录中添加以下curl选项
and add the following curl option in your main
char *msg_in = calloc(1,sizeof(char));
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, http_get_response);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &msg_in);
然后您将在msg_in
编辑
当程序中的msg_in
变得无用时,别忘了释放msg_in
do not forget to free msg_in
when it become uselless in your program
free(msg_in); msg_in = NULL;
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