cal_file
static void cal_rewindline(struct cal_file *cfile);
struct cal_file cfile = { 0 };
cal_readentry(struct cal_file *cfile, struct cal_entry *entry, bool skip)
cal_readline(struct cal_file *cfile)
cal_rewindline(struct cal_file *cfile)
static bool cal_readentry(struct cal_file *cfile,
static char *cal_readline(struct cal_file *cfile);