Add basename

README.md

@@ -12,3 +12,4 @@ Implemeted utilities:
  * `false`
  * `yes`
  * `dirname`
+ * `basename`

basename/basename.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	p "path"
+	"strings"
+)
+
+func usage() {
+	fmt.Printf("usage: %v path [suffix]\n", os.Args[0])
+	os.Exit(1)
+}
+
+func basename(path, suffix string) string {
+	result := p.Base(path)
+	if suffix == "" {
+		return result
+	}
+	return strings.SplitN(result, suffix, 2)[0]
+}
+
+func main() {
+	if len(os.Args) == 1 || len(os.Args) > 3 {
+		usage()
+	}
+
+	path := os.Args[1]
+	suffix := ""
+	if len(os.Args) == 3 {
+		suffix = os.Args[2]
+	}
+
+	fmt.Println(basename(path, suffix))
+}

basename/basename_test.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+	"path"
+	"testing"
+)
+
+type BasenameTestSuite struct {
+	suite.Suite
+}
+
+func (suite *BasenameTestSuite) TestEmptySuffix() {
+	assert.Equal(suite.T(), "go-coreutils", basename(path.Join("tomo", "go-coreutils"), ""))
+}
+
+func (suite *BasenameTestSuite) TestSuffixNotInPath() {
+	assert.Equal(suite.T(), "go-coreutils", basename(path.Join("tomo", "go-coreutils"), ".git"))
+}
+
+func (suite *BasenameTestSuite) TestSuffixInPath() {
+	assert.Equal(suite.T(), "go-coreutils", basename(path.Join("tomo", "go-coreutils"), ".git"))
+}
+
+func TestBasenameTestSuite(t *testing.T) {
+	suite.Run(t, new(BasenameTestSuite))
+}

go.mod

@@ -1 +1,3 @@
 module source.heropunch.io/tomo/go-coreutils
+
+require github.com/stretchr/testify v1.3.0

go.sum

@@ -0,0 +1,7 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=