shadowsocks-libev: use jshn.sh for making json config

As suggested by Jeffery To in openwrt/packages#8233

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

net/shadowsocks-libev/Makefile

@@ -14,7 +14,7 @@ include $(TOPDIR)/rules.mk
 #
 PKG_NAME:=shadowsocks-libev
 PKG_VERSION:=3.2.3
-PKG_RELEASE:=7
+PKG_RELEASE:=8
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/shadowsocks/shadowsocks-libev/releases/download/v$(PKG_VERSION)

net/shadowsocks-libev/files/shadowsocks-libev.init

@@ -11,26 +11,6 @@ START=99
 
 ss_confdir=/var/etc/shadowsocks-libev
 ss_bindir=/usr/bin
-q='"'
-
-ss_mkjson() {
-	echo "{" >"$confjson"
-	if ss_mkjson_ "$@" >>$confjson; then
-		sed -i -e '/^\s*$/d' -e '2,$s/^/\t/' -e '$s/,$//' "$confjson"
-		echo "}" >>"$confjson"
-	else
-		rm -f "$confjson"
-		return 1
-	fi
-}
-
-ss_mkjson_() {
-	local func
-
-	for func in "$@"; do
-		"$func" || return 1
-	done
-}
 
 ss_mkjson_server_conf() {
 	local cfgserver
@@ -45,32 +25,11 @@ ss_mkjson_server_conf() {
 
 ss_mkjson_server_conf_() {
 	[ -n "$server_port" ] || return 1
-	password="${password//\"/\\\"}"
-	cat <<-EOF
-		${server:+${q}server${q}: ${q}$server${q},}
-		"server_port": $server_port,
-		${method:+${q}method${q}: ${q}$method${q},}
-		${key:+${q}key${q}: ${q}$key${q},}
-		${password:+${q}password${q}: ${q}$password${q},}
-	EOF
-}
-
-ss_mkjson_common_conf() {
-	[ "$ipv6_first" = 0 ] && ipv6_first=false || ipv6_first=true
-	[ "$fast_open" = 0 ] && fast_open=false || fast_open=true
-	[ "$reuse_port" = 0 ] && reuse_port=false || reuse_port=true
-	cat <<-EOF
-		"use_syslog": true,
-		"ipv6_first": $ipv6_first,
-		"fast_open": $fast_open,
-		"reuse_port": $reuse_port,
-		${local_address:+${q}local_address${q}: ${q}$local_address${q},}
-		${local_port:+${q}local_port${q}: $local_port,}
-		${mode:+${q}mode${q}: ${q}$mode${q},}
-		${mtu:+${q}mtu${q}: $mtu,}
-		${timeout:+${q}timeout${q}: $timeout,}
-		${user:+${q}user${q}: ${q}$user${q},}
-	EOF
+	[ -z "$server" ] || json_add_string server "$server"
+	json_add_int server_port "$server_port"
+	[ -z "$method" ] || json_add_string method "$method"
+	[ -z "$key" ] || json_add_string key "$key"
+	[ -z "$password" ] || json_add_string password "$password"
 }
 
 ss_mkjson_ss_local_conf() {
@@ -88,9 +47,7 @@ ss_mkjson_ss_server_conf() {
 ss_mkjson_ss_tunnel_conf() {
 	ss_mkjson_server_conf || return 1
 	[ -n "$tunnel_address" ] || return 1
-	cat <<-EOF
-		${tunnel_address:+${q}tunnel_address${q}: ${q}$tunnel_address${q},}
-	EOF
+	json_add_string tunnel_address "$tunnel_address"
 }
 
 ss_xxx() {
@@ -101,23 +58,32 @@ ss_xxx() {
 
 	[ -x "$bin" ] || return
 	eval "$("validate_${cfgtype}_section" "$cfg" ss_validate_mklocal)"
-	"validate_${cfgtype}_section" "$cfg" || return 1
+	"validate_${cfgtype}_section" "$cfg" || return
 	[ "$disabled" = 0 ] || return
 
-	if ss_mkjson \
-			ss_mkjson_common_conf \
-			ss_mkjson_${cfgtype}_conf \
-			; then
-		procd_open_instance "$cfgtype.$cfg"
-		procd_set_param command "$bin" -c "$confjson"
-		[ "$verbose" = 0 ] || procd_append_param command -v
-		[ "$no_delay" = 0 ] || procd_append_param command --no-delay
-		[ -z "$bind_address" ] || procd_append_param command -b "$bind_address"
-		procd_set_param file "$confjson"
-		procd_set_param respawn
-		procd_close_instance
-		ss_rules_cb
-	fi
+	json_init
+	ss_mkjson_${cfgtype}_conf || return
+	json_add_boolean use_syslog 1
+	json_add_boolean ipv6_first "$ipv6_first"
+	json_add_boolean fast_open "$fast_open"
+	json_add_boolean reuse_port "$reuse_port"
+	[ -z "$local_address" ] || json_add_string local_address "$local_address"
+	[ -z "$local_port" ] || json_add_int local_port "$local_port"
+	[ -z "$mode" ] || json_add_string mode "$mode"
+	[ -z "$mtu" ] || json_add_int mtu "$mtu"
+	[ -z "$timeout" ] || json_add_int timeout "$timeout"
+	[ -z "$user" ] || json_add_string user "$user"
+	json_dump -i >"$confjson"
+
+	procd_open_instance "$cfgtype.$cfg"
+	procd_set_param command "$bin" -c "$confjson"
+	[ "$verbose" = 0 ] || procd_append_param command -v
+	[ "$no_delay" = 0 ] || procd_append_param command --no-delay
+	[ -z "$bind_address" ] || procd_append_param command -b "$bind_address"
+	procd_set_param file "$confjson"
+	procd_set_param respawn
+	procd_close_instance
+	ss_rules_cb
 }
 
 ss_rules_cb() {