commit 7fad5dc142e5285556ce79d15c65d864fb9c331a
Author: sneak <sneak@sneak.berlin>
Date:   Mon Mar 30 15:40:09 2020 -0700

    initial

diff --git a/README.md b/README.md
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index 0000000..349af66
--- /dev/null
+++ b/README.md
@@ -0,0 +1,15 @@
+# sneak/goutil
+
+This is a bunch of little general-purpose go utility functions that I don't
+feel comfortable including as-is in my normal projects as they are too
+general, so I put them here.
+
+Suggestions are welcome.
+
+# License
+
+WTFPL (free software, no restrictions)
+
+# Author
+
+* [sneak@sneak.berlin](mailto:sneak@sneak.berlin)
diff --git a/go.mod b/go.mod
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+++ b/go.mod
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+module git.eeqj.de/sneak/goutil
+
+go 1.14
+
+require github.com/hako/durafmt v0.0.0-20191009132224-3f39dc1ed9f4
diff --git a/go.sum b/go.sum
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+++ b/go.sum
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+github.com/hako/durafmt v0.0.0-20191009132224-3f39dc1ed9f4 h1:60gBOooTSmNtrqNaRvrDbi8VAne0REaek2agjnITKSw=
+github.com/hako/durafmt v0.0.0-20191009132224-3f39dc1ed9f4/go.mod h1:5Scbynm8dF1XAPwIwkGPqzkM/shndPm79Jd1003hTjE=
diff --git a/util.go b/util.go
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+++ b/util.go
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+package goutil
+
+import (
+	"errors"
+	"math"
+	"os"
+	"regexp"
+	"time"
+
+	"github.com/hako/durafmt"
+)
+
+func FilterToAlnum(input string) string {
+	re := regexp.MustCompile("[^a-zA-Z0-9]+")
+	return re.ReplaceAllString(input, "")
+}
+
+func TimeDiffHuman(first time.Time, second time.Time) string {
+	if first.Before(second) {
+		return durafmt.ParseShort(second.Sub(first)).String()
+	} else {
+		return durafmt.ParseShort(first.Sub(second)).String()
+	}
+}
+
+// Does anyone else use uints for things that are always >=0 like counts and
+func TimeDiffAbsSeconds(first time.Time, second time.Time) uint {
+	return uint(math.Abs(first.Sub(second).Truncate(time.Second).Seconds()))
+}
+
+func Mkdirp(p string) error {
+	src, err := os.Stat(p)
+	if os.IsNotExist(err) {
+		errDir := os.MkdirAll(p, 0755)
+		if errDir != nil {
+			return err
+		}
+
+		return nil
+	}
+	if src.Mode().IsRegular() {
+		return errors.New("file already exists at path")
+	}
+	return nil
+}