Question:
I have to take three inputs in a single string.The code to take the input is:
GET /api HTTP/1.1. The next line is an empty newline. The input taking function should terminate after taking the 3rd newline.Also, I have to terminate the input after the first line
GET /something HTTP/1.1 if the line doesn’t have a /api word at the place of /something word.But when I’m using gets(), it terminates the string after taking
GET /api HTTP/1.1 part of the input. When using scanf, it terminates after taking only the first GET word. Is there any way to take the input as a single string?Answer:
In cases like these, you should just use getchar in a loop:#define MAX_MSG_BUF 1000
char char msg_send[MAX_MSG_BUF];
// you should wrap the below code in a function, like get3lines(buf, buf_size)
unsigned index = 0;
unsigned line_count = 0;
const unsigned buf_size = MAX_MSG_LEN;
do {
int tmp = getchar();
if (tmp < 0) break; // end of file or error
msg_send[index++] = tmp;
if (tmp == '\n') {
++line_count;
if (line_count == 1) {
// check that first line contains /api
if (!strnstr(msg_send, "/api", index) break;
}
}
} while (index < (MAX_MSG_BUF-1) && line_count < 3;
msg_send[index] = '\0';
// print error if line_count < 3 ?
[/code]
If you have better answer, please add a comment about this, thank you!