Function do_write_config_file

src/cfgfiles.c:168–210

#saveoptions - save config options into file */

/* #saveoptions - save config options into file */
int
do_write_config_file(void)
{
    FILE *fp;
    char tmp[BUFSZ];

    if (!configfile[0]) {
        pline("Strange, could not figure out config file name.");
        return ECMD_OK;
    }
    if (flags.suppress_alert < FEATURE_NOTICE_VER(3,7,0)) {
        pline("Warning: saveoptions is highly experimental!");
        wait_synch();
        pline("Some settings are not saved!");
        wait_synch();
        pline("All manual customization and comments are removed"
              " from the file!");
        wait_synch();
    }
#define overwrite_prompt "Overwrite config file %.*s?"
    Sprintf(tmp, overwrite_prompt,
            (int) (BUFSZ - sizeof overwrite_prompt - 2), configfile);
#undef overwrite_prompt
    if (!paranoid_query(TRUE, tmp))
        return ECMD_OK;

    fp = fopen(configfile, "w");
    if (fp) {
        size_t len, wrote;
        strbuf_t buf;

        strbuf_init(&buf);
        all_options_strbuf(&buf);
        len = strlen(buf.str);
        wrote = fwrite(buf.str, 1, len, fp);
        fclose(fp);
        strbuf_empty(&buf);
        if (wrote != len)
            pline("An error occurred, wrote only partial data (%zu/%zu).",
                  wrote, len);
    }
    return ECMD_OK;
}
#endif /* SFCTOOL */

/* remember the name of the file we're accessing;