remove redundant dependencies

go.mod

@@ -1,14 +1 @@
 module github.com/jondot/goweight
-
-require (
-	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect
-	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/dustin/go-humanize v0.0.0-20180713052910-9f541cc9db5d
-	github.com/mattn/go-zglob v0.0.0-20180803001819-2ea3427bfa53
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/spf13/pflag v1.0.2
-	github.com/stretchr/testify v1.2.2 // indirect
-	github.com/thoas/go-funk v0.0.0-20180716193722-1060394a7713
-	gopkg.in/alecthomas/kingpin.v2 v2.2.6
-)

go.sum

@@ -1,20 +0,0 @@
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dustin/go-humanize v0.0.0-20180713052910-9f541cc9db5d h1:lDrio3iIdNb0Gw9CgH7cQF+iuB5mOOjdJ9ERNJCBgb4=
-github.com/dustin/go-humanize v0.0.0-20180713052910-9f541cc9db5d/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/mattn/go-zglob v0.0.0-20180803001819-2ea3427bfa53 h1:tGfIHhDghvEnneeRhODvGYOt305TPwingKt6p90F4MU=
-github.com/mattn/go-zglob v0.0.0-20180803001819-2ea3427bfa53/go.mod h1:9fxibJccNxU2cnpIKLRRFA7zX7qhkJIQWBb449FYHOo=
-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/spf13/pflag v1.0.2 h1:Fy0orTDgHdbnzHcsOgfCN4LtHf0ec3wwtiwJqwvf3Gc=
-github.com/spf13/pflag v1.0.2/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/thoas/go-funk v0.0.0-20180716193722-1060394a7713 h1:knaxjm6QMbUMNvuaSnJZmw0gRX4V/79JVUQiziJGM84=
-github.com/thoas/go-funk v0.0.0-20180716193722-1060394a7713/go.mod h1:mlR+dHGb+4YgXkf13rkQTuzrneeHANxOm6+ZnEV9HsA=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=

main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"encoding/json"
+	"flag"
 	"fmt"
 
 	"github.com/jondot/goweight/pkg"
-
-	kingpin "gopkg.in/alecthomas/kingpin.v2"
 )
 
 var (
@@ -16,14 +15,22 @@ var (
 )
 
 var (
-	jsonOutput = kingpin.Flag("json", "Output json").Short('j').Bool()
-	buildTags  = kingpin.Flag("tags", "Build tags").String()
-	packages   = kingpin.Arg("packages", "Packages to build").String()
+	jsonOutput      = flag.Bool("json", false, "Output json")
+	jsonOutputShort = flag.Bool("j", false, "Output json")
+
+	buildTags = flag.String("tags", "", "Build tags")
+	packages  = flag.String("packages", "", "Packages to build")
+
+	showVersion = flag.Bool("version", false, "Shows version")
 )
 
 func main() {
-	kingpin.Version(fmt.Sprintf("%s (%s)", version, commit))
-	kingpin.Parse()
+	flag.Parse()
+	if *showVersion {
+		fmt.Printf("%s (%s)\n", version, commit)
+		return
+	}
+
 	weight := pkg.NewGoWeight()
 	if *buildTags != "" {
 		weight.BuildCmd = append(weight.BuildCmd, "-tags", *buildTags)
@@ -35,7 +42,7 @@ func main() {
 	work := weight.BuildCurrent()
 	modules := weight.Process(work)
 
-	if *jsonOutput {
+	if *jsonOutput || *jsonOutputShort {
 		m, _ := json.Marshal(modules)
 		fmt.Print(string(m))
 	} else {

pkg/goweight.go

@@ -5,13 +5,12 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"regexp"
 	"sort"
 	"strings"
 
-	"github.com/dustin/go-humanize"
-	"github.com/mattn/go-zglob"
-	"github.com/thoas/go-funk"
+	"github.com/jondot/goweight/pkg/humanize"
 )
 
 var moduleRegex = regexp.MustCompile("packagefile (.*)=(.*)")
@@ -64,21 +63,72 @@ func (g *GoWeight) BuildCurrent() string {
 }
 
 func (g *GoWeight) Process(work string) []*ModuleEntry {
+	var files []string
+
+	err := filepath.Walk(work, func(path string, _ os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if filepath.Base(path) == "importcfg" {
+			files = append(files, path)
+		}
+		return nil
+	})
 
-	files, err := zglob.Glob(work + "**/importcfg")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	allLines := funk.Uniq(funk.FlattenDeep(funk.Map(files, func(file string) []string {
-		f, err := ioutil.ReadFile(file)
-		if err != nil {
-			return []string{}
+	allLines := uniqLines(flattenSLices(filesLines(files)))
+	var modules []*ModuleEntry
+	for _, line := range allLines {
+		module := processModule(line)
+		if module == nil {
+			continue
 		}
-		return strings.Split(string(f), "\n")
-	})))
-	modules := funk.Compact(funk.Map(allLines, processModule)).([]*ModuleEntry)
+		modules = append(modules, module)
+	}
 	sort.Slice(modules, func(i, j int) bool { return modules[i].Size > modules[j].Size })
 
 	return modules
 }
+
+func uniqLines(lines []string) []string {
+	m := make(map[string]struct{})
+
+	var uniqLines []string
+
+	for _, line := range lines {
+		_, seen := m[line]
+		if !seen {
+			uniqLines = append(uniqLines, line)
+			m[line] = struct{}{}
+		}
+	}
+
+	return uniqLines
+}
+
+func flattenSLices(slice [][]string) []string {
+	var flatten []string
+	for _, s := range slice {
+		flatten = append(flatten, s...)
+	}
+	return flatten
+}
+
+func filesLines(files []string) [][]string {
+	var lines [][]string
+	for _, f := range files {
+		lines = append(lines, fileLines(f))
+	}
+	return lines
+}
+
+func fileLines(file string) []string {
+	f, err := ioutil.ReadFile(file)
+	if err != nil {
+		return []string{}
+	}
+	return strings.Split(string(f), "\n")
+}

pkg/humanize/humanize.go

@@ -0,0 +1,35 @@
+package humanize
+
+import (
+	"fmt"
+	"math"
+)
+
+func logn(n, b float64) float64 {
+	return math.Log(n) / math.Log(b)
+}
+
+func humanateBytes(s uint64, base float64, sizes []string) string {
+	if s < 10 {
+		return fmt.Sprintf("%d B", s)
+	}
+	e := math.Floor(logn(float64(s), base))
+	suffix := sizes[int(e)]
+	val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10
+	f := "%.0f %s"
+	if val < 10 {
+		f = "%.1f %s"
+	}
+
+	return fmt.Sprintf(f, val, suffix)
+}
+
+// Bytes produces a human readable representation of an SI size.
+//
+// See also: ParseBytes.
+//
+// Bytes(82854982) -> 83 MB
+func Bytes(s uint64) string {
+	sizes := []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"}
+	return humanateBytes(s, 1000, sizes)
+}