Start adding uuid support

go.mod

@@ -3,6 +3,7 @@ module github.com/lucapette/fakedata
 go 1.17
 
 require (
+	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/kr/pretty v0.0.0-20160823170715-cfb55aafdaf3
 	github.com/spf13/pflag v1.0.0
 )

go.sum

@@ -1,3 +1,5 @@
+github.com/gofrs/uuid v4.2.0+incompatible h1:yyYWMnhkhrKwwr8gAOcOCYxOOscHgDS9yZgBrnJfGa0=
+github.com/gofrs/uuid v4.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/kr/pretty v0.0.0-20160823170715-cfb55aafdaf3 h1:dhwb1Ev84SKKVBfLuhR4bw/29yYHzwtTyTLUWWnvYxI=
 github.com/kr/pretty v0.0.0-20160823170715-cfb55aafdaf3/go.mod h1:Bvhd+E3laJ0AVkG0c9rmtZcnhV0HQ3+c3YxxqTvc/gA=
 github.com/kr/text v0.0.0-20160504234017-7cafcd837844 h1:kpzneEBeC0dMewP3gr/fADv1OlblH9r1goWVwpOt3TU=

main.go

@@ -41,7 +41,7 @@ func generatorsHelp(generators fakedata.Generators) string {
 	buffer := &bytes.Buffer{}
 	pattern := fmt.Sprintf("%%-%ds%%s\n", max+2) //+2 makes the output more readable
 	for _, gen := range generators {
-		fmt.Fprintf(buffer, pattern, gen.Name, gen.Desc) // nolint: errcheck
+		fmt.Fprintf(buffer, pattern, gen.Name, gen.Desc)
 	}
 
 	return buffer.String()

pkg/fakedata/generator.go

@@ -4,11 +4,13 @@ import (
 	"fmt"
 	"io/ioutil"
 	"math/rand"
+	"os"
 	"sort"
 	"strconv"
 	"strings"
 	"time"
 
+	"github.com/gofrs/uuid"
 	"github.com/lucapette/fakedata/pkg/data"
 )
 
@@ -199,6 +201,24 @@ func enum(options string) (func() string, error) {
 	return func() string { return withList(list)() }, nil
 }
 
+func uuidv1() string {
+	u1, err := uuid.NewV1()
+	if err != nil {
+		fmt.Printf("failed to generate UUID: %v\n", err)
+		os.Exit(1)
+	}
+	return u1.String()
+}
+
+func uuidv4() string {
+	u1, err := uuid.NewV4()
+	if err != nil {
+		fmt.Printf("failed to generate UUID: %v\n", err)
+		os.Exit(1)
+	}
+	return u1.String()
+}
+
 type generatorsMap map[string]Generator
 
 func (gM generatorsMap) addGen(g Generator) {
@@ -342,5 +362,8 @@ func newFactory() (f factory) {
 		CustomFunc: file,
 	})
 
+	generators.addGen(Generator{Name: "uuidv1", Desc: "uuidv1", Func: uuidv1})
+	generators.addGen(Generator{Name: "uuidv4", Desc: "uuidv4", Func: uuidv4})
+
 	return factory{generators: generators}
 }