Initial commit

go.mod

@@ -0,0 +1,10 @@
+module scm.yoorie.de/go-lib/util
+
+go 1.18
+
+require gotest.tools v2.2.0+incompatible
+
+require (
+	github.com/google/go-cmp v0.5.7 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+)

go.sum

@@ -0,0 +1,8 @@
+github.com/google/go-cmp v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
+github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
+gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=

utils.go

@@ -0,0 +1,47 @@
+package util
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// FileExists Checks if a file with the given file name exists
+func FileExists(fileName string) bool {
+	if _, err := os.Stat(fileName); os.IsNotExist(err) {
+		return false
+	}
+	return true
+}
+
+// JoiningSlash joining http path elements
+func JoiningSlash(elem ...string) string {
+	return joiningSlash(elem)
+}
+
+func joiningSlash(elem []string) string {
+	path := ""
+	for _, e := range elem {
+		if e != "" {
+			if path == "" {
+				path = e
+			} else {
+				path = singleJoiningSlash(path, e)
+			}
+		}
+	}
+	return path
+}
+
+func singleJoiningSlash(a, b string) string {
+	filepath.Join(a, b)
+	aslash := strings.HasSuffix(a, "/")
+	bslash := strings.HasPrefix(b, "/")
+	switch {
+	case aslash && bslash:
+		return a + b[1:]
+	case !aslash && !bslash:
+		return a + "/" + b
+	}
+	return a + b
+}

utils_test.go

@@ -0,0 +1,20 @@
+package util
+
+import (
+	"testing"
+
+	"gotest.tools/assert"
+)
+
+func TestFileExist(t *testing.T) {
+	assert.Assert(t, FileExists("utils.go"))
+	assert.Assert(t, !FileExists("Utils2.go"))
+}
+
+func TestJoiningSlash(t *testing.T) {
+	assert.Equal(t, "http://my.tld/bla/blub", JoiningSlash("http://my.tld", "bla", "blub"))
+	assert.Equal(t, "http://my.tld/bla/blub", JoiningSlash("http://my.tld/", "bla", "blub"))
+	assert.Equal(t, "http://my.tld/bla/blub", JoiningSlash("http://my.tld", "bla/", "blub"))
+	assert.Equal(t, "http://my.tld/docs/bla/blub", JoiningSlash("http://my.tld/docs", "bla/", "blub"))
+	assert.Equal(t, "http://my.tld/docs/bla/blub", JoiningSlash("http://my.tld/docs/", "bla/", "blub"))
+}