From c143b059529d1742fef17d5bd3e2a47ec816b8d5 Mon Sep 17 00:00:00 2001
From: Jasper Huang <jasper@expensify.com>
Date: Fri, 12 Jul 2024 12:14:01 -0700
Subject: [PATCH 1/2] add STimestampToEpoch

---
 libstuff/STime.cpp  | 7 +++++++
 libstuff/libstuff.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/libstuff/STime.cpp b/libstuff/STime.cpp
index f88a4edef..7d88100e1 100644
--- a/libstuff/STime.cpp
+++ b/libstuff/STime.cpp
@@ -19,6 +19,13 @@ string SComposeTime(const string& format, uint64_t when) {
     return string(buf, length);
 }
 
+uint64_t STimestampToEpoch(const string& format, const string& timestamp) {
+    struct tm time;
+    memset(&time, 0, sizeof(struct tm));
+    strptime(timestamp.c_str(), format.c_str(), &time);
+    return mktime(&time);
+}
+
 int SDaysInMonth(int year, int month) {
     // 30 days hath September...
     if (month == 4 || month == 6 || month == 9 || month == 11) {
diff --git a/libstuff/libstuff.h b/libstuff/libstuff.h
index 5a3cd5af2..ad32c2a03 100644
--- a/libstuff/libstuff.h
+++ b/libstuff/libstuff.h
@@ -161,6 +161,7 @@ uint64_t STimeNow();
 uint64_t STimeThisMorning(); // Timestamp for this morning at midnight GMT
 int SDaysInMonth(int year, int month);
 string SComposeTime(const string& format, uint64_t when);
+uint64_t STimestampToEpoch(const string& format, const string& timestamp);
 timeval SToTimeval(uint64_t when);
 string SFirstOfMonth(const string& timeStamp, const int64_t& offset = 0);
 

From 2c27945638b853e90066fe6fe1acdc7bfa2c8a3d Mon Sep 17 00:00:00 2001
From: Jasper Huang <jasper@expensify.com>
Date: Fri, 12 Jul 2024 12:21:30 -0700
Subject: [PATCH 2/2] include import for memset

---
 libstuff/STime.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstuff/STime.cpp b/libstuff/STime.cpp
index 7d88100e1..224ae6846 100644
--- a/libstuff/STime.cpp
+++ b/libstuff/STime.cpp
@@ -1,5 +1,6 @@
 #include "libstuff.h"
 
+#include <cstring>
 #include <sys/time.h>
 
 uint64_t STimeNow() {