Reduced usage of snprintf and string_buffer by replacing them with mvprintw. Prototype code for print_error.

1 files changed, 48 insertions, 0 deletions

diff --git a/misc.c b/misc.c
index 35a602c..32e4360 100644
--- a/misc.c
+++ b/misc.c
@@ -35,6 +35,54 @@
  */
 
 
+// Prints time into string using 5 characters centered on space.
+// The string buffer should be able to store space UTF8 characters plus '\0'.
+char *sprint_time5_utf8(char *string, intmax_t time, int space) {
+	const int TIME_CHARS = 5;
+	assert(space >= TIME_CHARS);
+	
+	int buffer_space = space * 4 + 1; // Each that UTF8 char can have 4 bytes.
+	int left_padding = (space - TIME_CHARS) / 2;
+	int right_padding = space - TIME_CHARS - left_padding;
+	
+	if (time < 0) {
+		snprintf(string, buffer_space, "%*s  -  %*s", left_padding, "", right_padding, "");
+	}
+	else if (time == 0) {
+		snprintf(string, buffer_space, "%*s  0  %*s", left_padding, "", right_padding, "");
+	}
+	else if (time < SECONDS_IN_MINUTE) {
+		snprintf(string, buffer_space, "%*s%3jds %*s", left_padding, "", time, right_padding, "");
+	}
+	else if (time < (intmax_t)100 * SECONDS_IN_HOUR) {
+		intmax_t hours = (double)time / (double)SECONDS_IN_HOUR;
+		intmax_t minutes = (time - (hours * SECONDS_IN_HOUR) ) / SECONDS_IN_MINUTE;
+		snprintf(string, buffer_space, "%*s%02jd:%02jd%*s", left_padding, "", hours, minutes, right_padding, "");
+	}
+	else if (time < (intmax_t)(9999.5 * SECONDS_IN_DAY)) {
+		double value = (double)time / (double)SECONDS_IN_DAY;
+		int decimals =
+			time >= 99.95 * SECONDS_IN_DAY ? 0 :
+			time >= 9.995 * SECONDS_IN_DAY ? 1 :
+			2;
+		snprintf(string, buffer_space, "%*s%4.*fd%*s", left_padding, "", decimals, value, right_padding, "");
+	}
+	else if (time < (intmax_t)(9999.5 * SECONDS_IN_YEAR)) {
+		double value = (double)time / (double)SECONDS_IN_YEAR;
+		int decimals =
+			time >= 99.95 * SECONDS_IN_YEAR ? 0 :
+			time >= 9.995 * SECONDS_IN_YEAR ? 1 :
+			2;
+		snprintf(string, buffer_space, "%*s%4.*fy%*s", left_padding, "", decimals, value, right_padding, "");
+	}
+	else {
+		snprintf(string, buffer_space, "%*s  ∞  %*s", left_padding, "", right_padding, "");
+	}
+	
+	return string;
+}
+
+
 // Writes only the database core structure and the provided task if not null.
 // Returns success.
 bool store_database_partial(const database_st *db, const task_st *task, const char *path) {