From ca0326f03972b9adf5a5ee21a963c7ef8a5ad366 Mon Sep 17 00:00:00 2001
From: Sebastien Douheret <sebastien.douheret@iot.bzh>
Date: Thu, 18 May 2017 11:04:44 +0200
Subject: Improved ResolveEnvVar and add support of tilde (~/...)

---
 lib/xdsconfig/fileconfig.go | 25 ++-----------------------
 1 file changed, 2 insertions(+), 23 deletions(-)

(limited to 'lib/xdsconfig')

diff --git a/lib/xdsconfig/fileconfig.go b/lib/xdsconfig/fileconfig.go
index d39cae0..4be54ff 100644
--- a/lib/xdsconfig/fileconfig.go
+++ b/lib/xdsconfig/fileconfig.go
@@ -2,12 +2,10 @@ package xdsconfig
 
 import (
 	"encoding/json"
-	"fmt"
 	"os"
 	"os/user"
 	"path"
 	"path/filepath"
-	"regexp"
 	"strings"
 
 	"github.com/iotbzh/xds-server/lib/common"
@@ -89,11 +87,10 @@ func updateConfigFromFile(c *Config, confFile string) error {
 		&fCfg.SThgConf.Home,
 		&fCfg.SThgConf.BinDir} {
 
-		rep, err := resolveEnvVar(*field)
-		if err != nil {
+		var err error
+		if *field, err = common.ResolveEnvVar(*field); err != nil {
 			return err
 		}
-		*field = path.Clean(rep)
 	}
 
 	// Config file settings overwrite default config
@@ -123,21 +120,3 @@ func updateConfigFromFile(c *Config, confFile string) error {
 
 	return nil
 }
-
-// resolveEnvVar Resolved environment variable regarding the syntax ${MYVAR}
-func resolveEnvVar(s string) (string, error) {
-	re := regexp.MustCompile("\\${(.*)}")
-	vars := re.FindAllStringSubmatch(s, -1)
-	res := s
-	for _, v := range vars {
-		val := os.Getenv(v[1])
-		if val == "" {
-			return res, fmt.Errorf("ERROR: %s env variable not defined", v[1])
-		}
-
-		rer := regexp.MustCompile("\\${" + v[1] + "}")
-		res = rer.ReplaceAllString(res, val)
-	}
-
-	return res, nil
-}
-- 
cgit 1.2.3-korg