Added array support for env variables. Fix #6

gonfig.go

@@ -3,6 +3,7 @@ package gonfig
 import (
 	"errors"
 	"os"
+	"strings"
 )
 
 type loadedSource struct {
@@ -49,6 +50,12 @@ func (c Configuration) findKey(key string) (interface{}, bool) {
 		case "env":
 			if val, fnd := os.LookupEnv(key); fnd {
 				value = val
+				if strings.HasPrefix(val, "[") && strings.HasSuffix(val, "]") { // We will assume the returned val is an array if it starts with "[" and ends with "]"
+					val = strings.TrimPrefix(val, "[")
+					val = strings.TrimSuffix(val, "]")
+					varr := strings.Split(val, ",")
+					value = varr
+				}
 				found = fnd
 			}
 		}

gonfig_test.go

@@ -80,13 +80,19 @@ func Test_AddConfigSource_Env(t *testing.T) {
 	c = c.AddConfigSource(s)
 	assert.Equal(t, len(c.sources), 1)
 	os.Setenv("key1", "value1")
+	// Let's try to find a key that's there
 	val, found := c.findKey("key1")
 	assert.Equal(t, true, found)
 	assert.Equal(t, "value1", val)
-	// Let's try to find
+	// Let's try to find a key that's not there
 	val, found = c.findKey("key2")
 	assert.Equal(t, false, found)
 	assert.Nil(t, val)
+	os.Setenv("arrkey1", "[\"val1\",\"val2\",\"val3\"]")
+	// Let's try to find a key that's there
+	val, found = c.findKey("arrkey1")
+	assert.Equal(t, true, found)
+	assert.Equal(t, []string{"\"val1\"", "\"val2\"", "\"val3\""}, val)
 }
 
 func Test_GetInt(t *testing.T) {