[PATCH 08/10] cal: determine how many header lines are needed at initialization

Sami Kerola
2013-10-27T20:43:06Z

misc-utils/cal.c | 53 ++++++++++++++++++++++-------------------------------
1 file changed, 22 insertions(+), 31 deletions(-)

diff --git a/misc-utils/cal.c b/misc-utils/cal.c
index b12a959..07c613a 100644
--- a/misc-utils/cal.c
+++ b/misc-utils/cal.c
@@ -251,16 +251,16 @@ struct cal_control {
int wflag; /* uses WEEK_NUM_ enum */
struct cal_request req; /* the times user is interested */
unsigned int julian:1, /* julian output */
- yflag:1; /* print whole year */
+ yflag:1, /* print whole year */
+ header_hint:1; /* does month name + year execeed cal_width.wk */
};

/* function prototypes */
static int leap_year(long year);
static void headers_init(struct cal_control *ctl);
-static int do_monthly(int day, int month, long year, struct fmt_st *out, int header_hint,
+static int do_monthly(int day, int month, long year, struct fmt_st *out,
const struct cal_control *ctl);
static void monthly(const struct cal_control *ctl);
-static int two_header_lines(int month, long year, const struct cal_control *ctl);
static void monthly3(const struct cal_control *ctl);
static char *append_wnum(char *p, int *dp, int month, long year, int cal, int row,
const struct cal_control *ctl);
@@ -514,6 +514,10 @@ static void headers_init(struct cal_control *ctl)
{
size_t i, wd;
char *cur_dh = day_headings;
+ char tmp[FMT_ST_CHARS];
+ size_t year_len;
+
+ year_len = snprintf(tmp, sizeof(tmp), "%ld", ctl->req.year);

for (i = 0; i < DAYS_IN_WEEK; i++) {
size_t space_left;
@@ -529,12 +533,16 @@ static void headers_init(struct cal_control *ctl)
space_left, ctl->width.dy - 1);
}

- for (i = 0; i < MONTHS_IN_YEAR; i++)
+ for (i = 0; i < MONTHS_IN_YEAR; i++) {
ctl->full_month[i] = nl_langinfo(MON_1 + i);
+ /* The +1 after year_len is space in between month and year. */
+ if (ctl->width.wk < strlen(ctl->full_month[i]) + year_len + 1)
+ ctl->header_hint = 1;
+ }
}

static int do_monthly(int day, int month, long year, struct fmt_st *out,
- int header_hint, const struct cal_control *ctl)
+ const struct cal_control *ctl)
{
int col, row, days[MAXDAYS];
char *p, lineout[FMT_ST_CHARS];
@@ -542,9 +550,7 @@ static int do_monthly(int day, int month, long year, struct fmt_st *out,

day_array(day, month, year, days, ctl);

- if (header_hint < 0)
- header_hint = two_header_lines(month, year, ctl);
- if (header_hint) {
+ if (ctl->header_hint) {
snprintf(lineout, sizeof(lineout), _("%s"), ctl->full_month[month - 1]);
center_str(lineout, out->s[pos], ARRAY_SIZE(out->s[pos]), ctl->width.wk - 1);
pos++;
@@ -600,30 +606,18 @@ static void monthly(const struct cal_control *ctl)
int i, rows;
struct fmt_st out;

- rows = do_monthly(ctl->req.day, ctl->req.month, ctl->req.year, &out, -1, ctl);
+ rows = do_monthly(ctl->req.day, ctl->req.month, ctl->req.year, &out, ctl);
for (i = 0; i < rows; i++) {
my_putstring(out.s[i]);
my_putstring("\n");
}
}

-static int two_header_lines(int month, long year, const struct cal_control *ctl)
-{
- char lineout[FMT_ST_CHARS];
- size_t len;
- snprintf(lineout, sizeof(lineout), "%ld", year);
- len = strlen(lineout);
- len += strlen(ctl->full_month[month - 1]) + 1;
- if (ctl->width.wk - 1 < len)
- return 1;
- return 0;
-}
-
static void monthly3(const struct cal_control *ctl)
{
char lineout[FMT_ST_CHARS];
int i;
- int rows, two_lines;
+ int rows;
struct fmt_st out_prev;
struct fmt_st out_curm;
struct fmt_st out_next;
@@ -647,23 +641,20 @@ static void monthly3(const struct cal_control *ctl)
next_month = ctl->req.month + 1;
next_year = ctl->req.year;
}
- two_lines = two_header_lines(prev_month, prev_year, ctl);
- two_lines += two_header_lines(ctl->req.month, ctl->req.year, ctl);
- two_lines += two_header_lines(next_month, next_year, ctl);
- if (0 < two_lines)
+ if (ctl->header_hint)
rows = FMT_ST_LINES;
else
rows = FMT_ST_LINES - 1;
- do_monthly(ctl->req.day, prev_month, prev_year, &out_prev, two_lines, ctl);
- do_monthly(ctl->req.day, ctl->req.month, ctl->req.year, &out_curm, two_lines, ctl);
- do_monthly(ctl->req.day, next_month, next_year, &out_next, two_lines, ctl);
+ do_monthly(ctl->req.day, prev_month, prev_year, &out_prev, ctl);
+ do_monthly(ctl->req.day, ctl->req.month, ctl->req.year, &out_curm, ctl);
+ do_monthly(ctl->req.day, next_month, next_year, &out_next, ctl);

- for (i = 0; i < (two_lines ? 3 : 2); i++) {
+ for (i = 0; i < (ctl->header_hint ? 3 : 2); i++) {
snprintf(lineout, sizeof(lineout),
"%s %s %s\n", out_prev.s[i], out_curm.s[i], out_next.s[i]);
my_putstring(lineout);
}
- for (i = two_lines ? 3 : 2; i < rows; i++) {
+ for (i = ctl->header_hint ? 3 : 2; i < rows; i++) {
int w1, w2, w3;
w1 = w2 = w3 = ctl->width.wk;

--
1.8.4.1