commit 42273f46cd7015440589b7f3ac85ecc06328fb64
author Eric Schmiedeberg <eric.schmiedeberg@bluerivertech.com> Thu Dec 14 13:48:45 2023 -0700
committer James Kuszmaul <james.kuszmaul@bluerivertech.com> Fri Feb 16 11:51:21 2024 -0800
tree fd24e4a426c439e985ce8be72eb35f4e7eccfed0
parent aa17d24bcf5aa7c00adc35fc238e91c1b789d090

Add ToString for time_points

Adds ToString helper functions for aos's time_point classes that match
the format that LogReader expects for start/end_time.

Change-Id: Ied8635da70ceabb82328ea47b34f878084663bdd
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>

aos/time/time.cc

diff --git a/aos/time/time.cc b/aos/time/time.cc
index db71379..e75fe45 100644
--- a/aos/time/time.cc
+++ b/aos/time/time.cc
@@ -6,6 +6,7 @@
 #include <cstring>
 #include <ctime>
 #include <iomanip>
+#include <sstream>
 
 #ifdef __linux__
 
@@ -79,6 +80,18 @@
   return stream;
 }
 
+std::string ToString(const aos::monotonic_clock::time_point &now) {
+  std::ostringstream stream;
+  stream << now;
+  return stream.str();
+}
+
+std::string ToString(const aos::realtime_clock::time_point &now) {
+  std::ostringstream stream;
+  stream << now;
+  return stream.str();
+}
+
 #ifdef __linux__
 std::optional<monotonic_clock::time_point> monotonic_clock::FromString(
     const std::string_view now) {

aos/time/time.h

diff --git a/aos/time/time.h b/aos/time/time.h
index 1a5cbd1..8462625 100644
--- a/aos/time/time.h
+++ b/aos/time/time.h
@@ -81,6 +81,9 @@
 std::ostream &operator<<(std::ostream &stream,
                          const aos::realtime_clock::time_point &now);
 
+std::string ToString(const aos::monotonic_clock::time_point &now);
+std::string ToString(const aos::realtime_clock::time_point &now);
+
 namespace time {
 #ifdef __linux__
 

aos/time/time_test.cc

diff --git a/aos/time/time_test.cc b/aos/time/time_test.cc
index e8b7153..97116b0 100644
--- a/aos/time/time_test.cc
+++ b/aos/time/time_test.cc
@@ -225,4 +225,12 @@
   }
 }
 
+// Test that ToString works for monotonic and realtime time points.
+TEST(TimeTest, ToStringTimePoints) {
+  EXPECT_EQ(ToString(realtime_clock::epoch() + std::chrono::hours(5 * 24) +
+                     std::chrono::seconds(11) + std::chrono::milliseconds(5)),
+            "1970-01-06_00-00-11.005000000");
+  EXPECT_EQ(ToString(monotonic_clock::min_time), "-9223372036.854775808sec");
+}
+
 }  // namespace aos::time::testing