support multi line text value

.gitignore

@@ -1 +1,2 @@
 .DS_Store
+.idea

fixtures/multiline.env

@@ -0,0 +1,6 @@
+PASSPORT_PUBLIC_KEY="-----BEGIN PUBLIC KEY-----
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\"
+BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+lHRucQ+Fe7L5fExgBtkNqjUCAwEAAQ==
+-----END PUBLIC KEY-----"

godotenv.go

@@ -110,20 +110,65 @@ func Parse(r io.Reader) (envMap map[string]string, err error) {
 		return
 	}
 
-	for _, fullLine := range lines {
-		if !isIgnoredLine(fullLine) {
-			var key, value string
-			key, value, err = parseLine(fullLine, envMap)
+	for i:= 0; i < len(lines); i++ {
+		fullLine := lines[i]
+		if isIgnoredLine(fullLine) {
+			continue
+		}
+		var key, value string
+		key, value, err = parseLine(fullLine, envMap)
+		if err != nil {
+			return
+		}
 
-			if err != nil {
-				return
+		if len(value) > 0 && (value[0] == '"' || value[0] == '\''){
+			quota := value[0]
+			value = value[1:]
+			for j := i+1; j < len(lines); j++ {
+				nextLine := lines[j]
+				value += "\n" + nextLine
+
+				if isMultiLineEnd(quota, nextLine) {
+					value = value[:len(value)-1]
+					i = j
+					break
+				}
 			}
-			envMap[key] = value
 		}
+		envMap[key] = value
 	}
 	return
 }
 
+
+func isMultiLineEnd(quota byte, line string)bool{
+	l := len(line)
+	lastChar := line[l-1]
+	if lastChar != quota {
+		return false
+	}
+
+	// AABBCCDDD\"
+	// DDEEEFFFGG\\\\"
+	// 123456789"
+
+	if l > 3 && line[l-2] == '\\' && line[l-3] == '\\' {
+		return true
+	}
+
+	// AABBCCDDD\"
+	// DDEEEFFFGG"
+	if l == 2 && line[l-2] != '\\'{
+		return true
+	}
+
+	if l > 2 && line[l-2] != '\\' {
+		return true
+	}
+
+	return false
+}
+
 //Unmarshal reads an env file from a string, returning a map of keys and values.
 func Unmarshal(str string) (envMap map[string]string, err error) {
 	return Parse(strings.NewReader(str))

godotenv_test.go

@@ -3,6 +3,7 @@ package godotenv
 import (
 	"bytes"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"reflect"
 	"strings"
@@ -472,3 +473,32 @@ func TestRoundtrip(t *testing.T) {
 
 	}
 }
+
+
+
+func TestMultiLine(t *testing.T) {
+	envFileName := "fixtures/multiline.env"
+	envMap, err := Read(envFileName)
+
+	if err != nil {
+		t.Error(err)
+	}
+
+
+	assertValue, err := ioutil.ReadFile(envFileName)
+	if err != nil {
+		t.Error(err)
+	}
+
+	assertValue = assertValue[21: len(assertValue)-1]
+
+	if envMap["PASSPORT_PUBLIC_KEY"] != string(assertValue) {
+		t.Errorf(
+			"Expected length %d, Actual length %d\r\n Expected Text:\r\n%s\r\nActual Text:\r\n%s\r\n",
+			len(assertValue),
+			len(envMap["PASSPORT_PUBLIC_KEY"]),
+			string(assertValue),
+			envMap["PASSPORT_PUBLIC_KEY"],
+		)
+	}
+}