Function rewriteConfigStringOption

app/redis-6.2.6/src/config.c:1302–1321

Rewrite a string option. */

/* Rewrite a string option. */
void rewriteConfigStringOption(struct rewriteConfigState *state, const char *option, char *value, const char *defvalue) {
    int force = 1;
    sds line;

    /* String options set to NULL need to be not present at all in the
     * configuration file to be set to NULL again at the next reboot. */
    if (value == NULL) {
        rewriteConfigMarkAsProcessed(state,option);
        return;
    }

    /* Set force to zero if the value is set to its default. */
    if (defvalue && strcmp(value,defvalue) == 0) force = 0;

    line = sdsnew(option);
    line = sdscatlen(line, " ", 1);
    line = sdscatrepr(line, value, strlen(value));

    rewriteConfigRewriteLine(state,option,line,force);
}

/* Rewrite a SDS string option. */
void rewriteConfigSdsOption(struct rewriteConfigState *state, const char *option, sds value, const sds defvalue) {