libs: move http.protocol.{date,mime,conditionals} to luci-lib-httpprotoutils

Also adjust the dependencies of components depending on these classes and
flatten the namespace from luci.http.protocol.* to luci.http.*

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

applications/luci-app-dnscrypt-proxy/Makefile

@@ -5,7 +5,7 @@
 include $(TOPDIR)/rules.mk
 
 LUCI_TITLE:=LuCI support for DNSCrypt-Proxy
-LUCI_DEPENDS:=+uclient-fetch +dnscrypt-proxy
+LUCI_DEPENDS:=+uclient-fetch +dnscrypt-proxy +luci-lib-httpprotoutils
 LUCI_PKGARCH:=all
 
 include ../../luci.mk

applications/luci-app-dnscrypt-proxy/luasrc/model/cbi/dnscrypt-proxy/overview_tab.lua

@@ -4,7 +4,6 @@
 local fs        = require("nixio.fs")
 local uci       = require("luci.model.uci").cursor()
 local util      = require("luci.util")
-local date      = require("luci.http.protocol.date")
 local res_input = "/usr/share/dnscrypt-proxy/dnscrypt-resolvers.csv"
 local res_dir   = fs.dirname(res_input)
 local dump      = util.ubus("network.interface", "dump", {})
@@ -12,6 +11,11 @@ local plug_cnt  = tonumber(luci.sys.exec("env -i /usr/sbin/dnscrypt-proxy --vers
 local res_list  = {}
 local url       = "https://raw.githubusercontent.com/dyne/dnscrypt-proxy/master/dnscrypt-resolvers.csv"
 
+local _, date = pcall(require, "luci.http.date")
+if not date then
+	_, date = pcall(require, "luci.http.protocol.date")
+end
+
 if not fs.access(res_input) then
 	if not fs.access("/lib/libustream-ssl.so") then
 		m = SimpleForm("error", nil, translate("No default resolver list and no SSL support available.<br />")

libs/luci-lib-httpclient/Makefile

@@ -7,7 +7,7 @@
 include $(TOPDIR)/rules.mk
 
 LUCI_TITLE:=HTTP(S) client library
-LUCI_DEPENDS:=+luci-base +luci-lib-nixio
+LUCI_DEPENDS:=+luci-base +luci-lib-nixio +luci-lib-httpprotoutils
 
 include ../../luci.mk
 

libs/luci-lib-httpclient/luasrc/httpclient.lua

@@ -8,7 +8,7 @@ local ltn12 = require "luci.ltn12"
 local util = require "luci.util"
 local table = require "table"
 local http = require "luci.http"
-local date = require "luci.http.protocol.date"
+local date = require "luci.http.date"
 
 local type, pairs, ipairs, tonumber = type, pairs, ipairs, tonumber
 local unpack = unpack

libs/luci-lib-httpprotoutils/Makefile

@@ -0,0 +1,14 @@
+#
+# Copyright (C) 2018 The LuCI Team <luci@lists.subsignal.org>
+#
+# This is free software, licensed under the Apache License, Version 2.0 .
+#
+
+include $(TOPDIR)/rules.mk
+
+LUCI_TITLE:=HTTP protocol utility functions
+LUCI_DEPENDS:=+luci-base
+
+include ../../luci.mk
+
+# call BuildPackage - OpenWrt buildroot signature

libs/luci-lib-httpprotoutils/luasrc/http/conditionals.lua

@@ -3,9 +3,9 @@
 
 -- This class provides basic ETag handling and implements most of the
 -- conditional HTTP/1.1 headers specified in RFC2616 Sct. 14.24 - 14.28 .
-module("luci.http.protocol.conditionals", package.seeall)
+module("luci.http.conditionals", package.seeall)
 
-local date = require("luci.http.protocol.date")
+local date = require("luci.http.date")
 
 
 function mk_etag( stat )

libs/luci-lib-httpprotoutils/luasrc/http/conditionals.luadoc

@@ -4,7 +4,7 @@ LuCI http protocol implementation - HTTP/1.1 bits.
 This class provides basic ETag handling and implements most of the
 conditional HTTP/1.1 headers specified in RFC2616 Sct. 14.24 - 14.28 .
 ]]
-module "luci.http.protocol.conditionals"
+module "luci.http.conditionals"
 
 ---[[
 Implement 14.19 / ETag.

libs/luci-lib-httpprotoutils/luasrc/http/date.lua

@@ -2,7 +2,7 @@
 -- Licensed to the public under the Apache License 2.0.
 
 -- This class contains functions to parse, compare and format http dates.
-module("luci.http.protocol.date", package.seeall)
+module("luci.http.date", package.seeall)
 
 require("luci.sys.zoneinfo")
 

libs/luci-lib-httpprotoutils/luasrc/http/date.luadoc

@@ -3,7 +3,7 @@ LuCI http protocol implementation - date helper class.
 
 This class contains functions to parse, compare and format http dates.
 ]]
-module "luci.http.protocol.date"
+module "luci.http.date"
 
 ---[[
 Return the time offset in seconds between the UTC and given time zone.

libs/luci-lib-httpprotoutils/luasrc/http/mime.lua

@@ -3,7 +3,7 @@
 
 -- This class provides functions to guess mime types from file extensions and
 -- vice versa.
-module("luci.http.protocol.mime", package.seeall)
+module("luci.http.mime", package.seeall)
 
 require("luci.util")
 

libs/luci-lib-httpprotoutils/luasrc/http/mime.luadoc

@@ -4,7 +4,7 @@ LuCI http protocol implementation - mime helper class.
 This class provides functions to guess mime types from file extensions and
 vice versa.
 ]]
-module "luci.http.protocol.mime"
+module "luci.http.mime"
 
 ---[[
 MIME mapping table containg extension - mimetype relations.