Feat: add envlist format for print to make output evaluable for shell (…

…#221)

Signed-off-by: Jean-Yves NOLEN <[email protected]>

cli/flags.go

@@ -1,6 +1,10 @@
 package cli
 
-import "github.com/urfave/cli"
+import (
+	"fmt"
+
+	"github.com/urfave/cli"
+)
 
 const (
 	// PathEnvKey ...
@@ -69,6 +73,8 @@ const (
 	OutputFormatRaw = "raw"
 	// OutputFormatJSON ...
 	OutputFormatJSON = "json"
+	// OutputFormatExport
+	OutputFormatEnvList = "envlist"
 )
 
 var (
@@ -123,7 +129,7 @@ var (
 	}
 	flFormat = cli.StringFlag{
 		Name:  FormatKey,
-		Usage: "Output format (options: raw, json).",
+		Usage: fmt.Sprintf("Output format (options: %s, %s, %s).", OutputFormatRaw, OutputFormatJSON, OutputFormatEnvList),
 	}
 	flExpand = cli.BoolFlag{
 		Name:  ExpandKey,

cli/print.go

@@ -15,7 +15,7 @@ func printCmd(c *cli.Context) error {
 	format := c.String(FormatKey)
 	if format == "" {
 		format = OutputFormatRaw
-	} else if !(format == OutputFormatRaw || format == OutputFormatJSON) {
+	} else if !(format == OutputFormatRaw || format == OutputFormatJSON || format == OutputFormatEnvList) {
 		log.Fatalf("Invalid format: %s", format)
 	}
 
@@ -32,6 +32,8 @@ func printCmd(c *cli.Context) error {
 	switch format {
 	case OutputFormatRaw:
 		printRawEnvs(envSet)
+	case OutputFormatEnvList:
+		printEnvsList(envSet)
 	case OutputFormatJSON:
 		if err := printJSONEnvs(envSet); err != nil {
 			log.Fatalf("Failed to print env list, err: %s", err)
@@ -116,3 +118,11 @@ func printRawEnvs(envList models.EnvsJSONListModel) {
 	}
 	fmt.Println()
 }
+
+func printEnvsList(envList models.EnvsJSONListModel) {
+	fmt.Println()
+	for key, value := range envList {
+		fmt.Printf("export %s=%q\n", key, value)
+	}
+	fmt.Println()
+}