Function repl

app/redis-6.2.6/src/redis-cli.c:2152–2289

}

static void repl(void) {
    sds historyfile = NULL;
    int history = 0;
    char *line;
    int argc;
    sds *argv;

    /* Initialize the help and, if possible, use the COMMAND command in order
     * to retrieve missing entries. */
    cliInitHelp();
    cliIntegrateHelp();

    config.interactive = 1;
    linenoiseSetMultiLine(1);
    linenoiseSetCompletionCallback(completionCallback);
    linenoiseSetHintsCallback(hintsCallback);
    linenoiseSetFreeHintsCallback(freeHintsCallback);

    /* Only use history and load the rc file when stdin is a tty. */
    if (isatty(fileno(stdin))) {
        historyfile = getDotfilePath(REDIS_CLI_HISTFILE_ENV,REDIS_CLI_HISTFILE_DEFAULT);
        //keep in-memory history always regardless if history file can be determined
        history = 1;
        if (historyfile != NULL) {
            linenoiseHistoryLoad(historyfile);
        }
        cliLoadPreferences();
    }

    cliRefreshPrompt();
    while((line = linenoise(context ? config.prompt : "not connected> ")) != NULL) {
        if (line[0] != '\0') {
            long repeat = 1;
            int skipargs = 0;
            char *endptr = NULL;

            argv = cliSplitArgs(line,&argc);

            /* check if we have a repeat command option and
             * need to skip the first arg */
            if (argv && argc > 0) {
                errno = 0;
                repeat = strtol(argv[0], &endptr, 10);
                if (argc > 1 && *endptr == '\0') {
                    if (errno == ERANGE || errno == EINVAL || repeat <= 0) {
                        fputs("Invalid redis-cli repeat command option value.\n", stdout);
                        sdsfreesplitres(argv, argc);
                        linenoiseFree(line);
                        continue;
                    }
                    skipargs = 1;
                } else {
                    repeat = 1;
                }
            }

            /* Won't save auth or acl setuser commands in history file */
            int dangerous = 0;