jshn: improve performance by using let instead of $(( ))

[project/libubox.git] / sh / jshn.sh

diff --git a/sh/jshn.sh b/sh/jshn.sh
index b3cd43c..f5cf1d2 100644 (file)
--- a/sh/jshn.sh
+++ b/sh/jshn.sh
@@ -42,7 +42,7 @@ _json_inc() {
        # var=$1
        # dest=$2
 
        # var=$1
        # dest=$2
 

-       eval "${JSON_PREFIX}$1=\$(( \${${JSON_PREFIX}$1:-0} + 1))${2:+; $2=\"\$${JSON_PREFIX}$1\"}"
+       let "${JSON_PREFIX}$1 += 1" "$2 = ${JSON_PREFIX}$1"

 }
 
 _json_add_generic() {
 }
 
 _json_add_generic() {


@@ -103,7 +103,7 @@ json_set_namespace() {
 }
 
 json_cleanup() {
 }
 
 json_cleanup() {

-       local unset
+       local unset tmp

 
        _json_get_var unset JSON_UNSET
        for tmp in $unset JSON_VAR; do
 
        _json_get_var unset JSON_UNSET
        for tmp in $unset JSON_VAR; do


@@ -174,7 +174,7 @@ json_add_double() {
 # functions read access to json variables
 
 json_load() {
 # functions read access to json variables
 
 json_load() {

-       eval `jshn -r "$1"`
+       eval "`jshn -r "$1"`"

 }
 
 json_dump() {
 }
 
 json_dump() {