From f1397c40b1374f5b64dde8cea66f06a37bb843c7 Mon Sep 17 00:00:00 2001
From: sneak <sneak@sneak.berlin>
Date: Mon, 21 Sep 2020 16:37:01 -0700
Subject: [PATCH] adds time functions from unix micros/millis

---
 LICENSE   | 14 ++++++++++++++
 README.md |  4 ++++
 util.go   | 20 ++++++++++++++++++++
 3 files changed, 38 insertions(+)
 create mode 100644 LICENSE

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..ee7d6a5
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,14 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+
diff --git a/README.md b/README.md
index 7340fa1..636e6a0 100644
--- a/README.md
+++ b/README.md
@@ -6,10 +6,14 @@ general, so I put them here.
 
 Suggestions are welcome.
 
+Really I think most of these should probably be in the stdlib.
+
 # License
 
 WTFPL (free software, no restrictions)
 
+
+
 # Author
 
 * [sneak@sneak.berlin](mailto:sneak@sneak.berlin)
diff --git a/util.go b/util.go
index 289ec9d..ac13284 100644
--- a/util.go
+++ b/util.go
@@ -69,3 +69,23 @@ func CopyFile(src, dst string) (err error) {
 	err = out.Sync()
 	return
 }
+
+func TimeFromUnixMilli(ms int64) time.Time {
+	const millisInSecond = 1000
+	const nsInSecond = 1000000
+	return time.Unix(ms/int64(millisInSecond), (ms%int64(millisInSecond))*int64(nsInSecond))
+}
+
+func TimeFromUnixMicro(ms int64) time.Time {
+	const microInSecond = 1000000
+	const nsInSecond = 1000000
+	return time.Unix(ms/int64(microInSecond), (ms%int64(microInSecond))*int64(nsInSecond))
+}
+
+func TimeFromWebKit(input int64) time.Time {
+	// webkit time is stupid and uses 1601-01-01 for epoch
+	// it's 11644473600 seconds behind unix 1970-01-01 epoch
+	// it's also in microseconds
+	unixMicrosCorrected := input - (11644473600 * 1000000)
+	return TimeFromUnixMicro(unixMicrosCorrected)
+}