1 file changed, 24 insertions, 6 deletions
diff --git a/source/ui-stats.c b/source/ui-stats.c
index 6da24ad..24a6e53 100644
--- a/source/ui-stats.c
+++ b/source/ui-stats.c
@@ -17,6 +17,24 @@
 
 #define DEFAULT_AUTHOR_ROWS 10
 
+// How many periods the page shows side by side.
+#define PERIOD_COLUMNS 4
+
+struct cgit_period {
+	const char code;
+	const char *name;
+
+	// Move a tm back to the first day of the period it falls in.
+	void (*trunc)(struct tm *tm);
+
+	// Step a truncated tm n whole periods, back when n is negative.
+	void (*step)(struct tm *tm, int n);
+
+	// Label the period a tm falls in. The buffer is reused, so a caller
+	// that keeps a label copies it.
+	char *(*pretty)(struct tm *tm);
+};
+
 // One author's share of the window. periods is keyed by the label of a period,
 // with the commit count stored in the util field itself rather than behind
 // another allocation.
@@ -116,10 +134,10 @@ static char *pretty_year(struct tm *tm)
 // The order runs from the finest window to the coarsest, because a repository
 // caps the page by storing an index into this table as its max-stats.
 static const struct cgit_period periods[] = {
-	{'w', "week", 4, trunc_week, step_week, pretty_week},
-	{'m', "month", 4, trunc_month, step_month, pretty_month},
-	{'q', "quarter", 4, trunc_quarter, step_quarter, pretty_quarter},
-	{'y', "year", 4, trunc_year, step_year, pretty_year},
+	{'w', "week", trunc_week, step_week, pretty_week},
+	{'m', "month", trunc_month, step_month, pretty_month},
+	{'q', "quarter", trunc_quarter, step_quarter, pretty_quarter},
+	{'y', "year", trunc_year, step_year, pretty_year},
 };
 
 static void window_start(const struct cgit_period *period, struct tm *tm)
@@ -137,7 +155,7 @@ static void window_start(const struct cgit_period *period, struct tm *tm)
 	tm->tm_hour = 0;
 	tm->tm_min = 0;
 	tm->tm_sec = 0;
-	for (i = 1; i < period->count; i++)
+	for (i = 1; i < PERIOD_COLUMNS; i++)
 		period->step(tm, -1);
 }
 
@@ -252,7 +270,7 @@ static struct string_list build_period_labels(const struct cgit_period *period)
 	int i;
 
 	window_start(period, &tm);
-	for (i = 0; i < period->count; i++) {
+	for (i = 0; i < PERIOD_COLUMNS; i++) {
 		string_list_append(&labels, period->pretty(&tm));
 		period->step(&tm, 1);
 	}