Merge pull request #7 from muchobien/feat/add-silent-flag

feat/add silent flag

cmd/main.go

@@ -43,6 +43,12 @@ func main() {
 				Aliases: []string{"o"},
 				Usage:   "Override existing environment variables with new ones",
 			},
+			&cli.BoolFlag{
+				Name:    "silent",
+				Aliases: []string{"s"},
+				Value:   false,
+				Usage:   "Ignore errors if .env file is not found",
+			},
 			&cli.BoolFlag{
 				Name:    "watch",
 				Aliases: []string{"w"},

internal/common/read.go

@@ -2,6 +2,7 @@ package common
 
 import (
 	"fmt"
+	"os"
 	"strings"
 
 	"github.com/joho/godotenv"
@@ -11,8 +12,9 @@ import (
 func Read(cCtx *cli.Context) (dict map[string]string, err error) {
 	filenames := cCtx.StringSlice("file")
 	extraEnvs := cCtx.StringSlice("env")
+	silent := cCtx.Bool("silent")
 
-	dict, err = godotenv.Read(filenames...)
+	dict, err = readFiles(filenames, silent)
 
 	if err != nil {
 		return
@@ -29,3 +31,37 @@ func Read(cCtx *cli.Context) (dict map[string]string, err error) {
 
 	return
 }
+
+func readFiles(filenames []string, silent bool) (envMap map[string]string, err error) {
+	envMap = make(map[string]string)
+
+	for _, filename := range filenames {
+		individualEnvMap, individualErr := readFile(filename)
+
+		if silent {
+			fmt.Fprintf(os.Stderr, "Warning: %s\n", individualErr)
+			continue
+		}
+
+		if individualErr != nil {
+			err = individualErr
+			return
+		}
+
+		for key, value := range individualEnvMap {
+			envMap[key] = value
+		}
+	}
+
+	return
+}
+
+func readFile(filename string) (envMap map[string]string, err error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return
+	}
+	defer file.Close()
+
+	return godotenv.Parse(file)
+}