From c0a8d222586f98da2db0724cd2e3657b56ddbf7c Mon Sep 17 00:00:00 2001
From: dzmipt <dz.mipt@gmail.com>
Date: Fri, 13 Dec 2024 16:41:03 +0100
Subject: [PATCH] format timespan with 0D (even for 0 days)

---
 src/studio/kdb/K.java      | 5 ++---
 test/studio/kdb/KTest.java | 8 ++++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/studio/kdb/K.java b/src/studio/kdb/K.java
index 547d928..0df5f86 100755
--- a/src/studio/kdb/K.java
+++ b/src/studio/kdb/K.java
@@ -1464,9 +1464,8 @@ public StringBuilder format(StringBuilder builder, KFormatContext context) {
                     jj = -jj;
                     builder.append("-");
                 }
-                int d = ((int) (jj / NS_IN_DAY));
-                if (d != 0) builder.append(d).append("D");
-                builder.append(i2((int) ((jj % NS_IN_DAY) / 3600000000000L)))
+                builder.append((int) (jj / NS_IN_DAY)).append("D").
+                        append(i2((int) ((jj % NS_IN_DAY) / 3600000000000L)))
                         .append(":").append(i2((int) ((jj % 3600000000000L) / 60000000000L)))
                         .append(":").append(i2((int) ((jj % 60000000000L) / 1000000000L)))
                         .append(".").append(nsFormatter.format((int) (jj % 1000000000L)));
diff --git a/test/studio/kdb/KTest.java b/test/studio/kdb/KTest.java
index 604dc56..f4f048d 100644
--- a/test/studio/kdb/KTest.java
+++ b/test/studio/kdb/KTest.java
@@ -184,15 +184,15 @@ public void testTimestampToString() throws Exception {
     @Test
     public void testTimespanToString() throws Exception {
         check(new K.KTimespan(-765432123456789l), "-8D20:37:12.123456789", "-8D20:37:12.123456789");
-        check(new K.KTimespan(123456), "00:00:00.000123456", "00:00:00.000123456");
+        check(new K.KTimespan(123456), "0D00:00:00.000123456", "0D00:00:00.000123456");
         check(new K.KTimespan(-Long.MAX_VALUE), "-0Wn", "-0Wn");
         check(new K.KTimespan(Long. MAX_VALUE), "0Wn", "0Wn");
         check(new K.KTimespan(Long.MIN_VALUE), "0Nn", "0Nn");
 
-        check(new K.KTimespanVector(-10, 10, 3), "-00:00:00.000000010 00:00:00.000000010 00:00:00.000000003", "-00:00:00.000000010 00:00:00.000000010 00:00:00.000000003");
+        check(new K.KTimespanVector(-10, 10, 3), "-0D00:00:00.000000010 0D00:00:00.000000010 0D00:00:00.000000003", "-0D00:00:00.000000010 0D00:00:00.000000010 0D00:00:00.000000003");
         check(new K.KTimespanVector(), "`timespan$()", "`timespan$()");
-        check(new K.KTimespanVector(0), "enlist 00:00:00.000000000", "enlist 00:00:00.000000000");
-        check(new K.KTimespanVector(5, Long.MIN_VALUE, Long.MAX_VALUE, -Long.MAX_VALUE), "00:00:00.000000005 0Nn 0Wn -0Wn", "00:00:00.000000005 0Nn 0Wn -0Wn");
+        check(new K.KTimespanVector(0), "enlist 0D00:00:00.000000000", "enlist 0D00:00:00.000000000");
+        check(new K.KTimespanVector(5, Long.MIN_VALUE, Long.MAX_VALUE, -Long.MAX_VALUE), "0D00:00:00.000000005 0Nn 0Wn -0Wn", "0D00:00:00.000000005 0Nn 0Wn -0Wn");
     }
 
     @Test