readline库的使用

接口十分简单,readline和addhistory:

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <readline/readline.h>
#include <readline/history.h>


int main()
{
    char* input, shell_prompt[100];


    // Configure readline to auto-complete paths when the tab key is hit.
    rl_bind_key(' ', rl_complete);


    for(;;) {
        // Create prompt string from user name and current working directory.
        snprintf(shell_prompt, sizeof(shell_prompt), "%s:%s $ ", getenv("USER"), getcwd(NULL, 1024));


        // Display prompt and read input (n.b. input must be freed after use)...
        input = readline(shell_prompt);


        // Check for EOF.
        if (!input)
            break;


        // Add input to history.
        add_history(input);


        // Do stuff...


        // Free input.
        free(input);
    }
}

g++ TestReadLine.cc -lreadline就能够了。