[WIP] Add Lua IO helpers and WebView bindings

Add Lua-side IO utilities and integrate WebView handler helpers. Introduce webui/src/main/assets/lua/nio.lua to provide SuFile binding and byte-stream copy/read helpers. Update std.lua to expose common Java classes and context/domain globals to Lua. Update str.lua to require std, add stringToStream and export helpers to _G. Refactor webview.lua to require std/str, expose WebView-related Java types, register path/event handlers via java.proxy, and use stringToStream for responses. Update WXView.kt to reference SuFile (ensure the class is available to the Lua bridge). These changes unify stream handling and simplify registering resource handlers and event listeners from Lua.

Author: DerGoogler

webui/src/main/assets/lua/nio.lua

@@ -0,0 +1,41 @@
+require("wx:std")
+
+local sufile_import = java.import("com.dergoogler.mmrl.platform.file.SuFile")
+
+local DEFAULT_BUFFER_SIZE = 8 * 1024
+
+local M = {}
+
+function _G.SuFile(...)
+    local args = {...}
+    local jarray = java.array(Object, #args)
+    for i = 1, #args do
+        jarray[i] = String(args[i])
+    end
+    return java.new(sufile_import, jarray)
+end
+
+function M.copyTo(input, output, bufferSize)
+    bufferSize = bufferSize or DEFAULT_BUFFER_SIZE
+    local bytesCopied = 0
+    local chunk
+    local buf = BufferedInputStream(input, bufferSize)
+    -- read byte by byte as fallback
+    local b = buf:read()
+    while b ~= -1 do
+        output:write(b)
+        bytesCopied = bytesCopied + 1
+        b = buf:read()
+    end
+    return bytesCopied
+end
+
+function M.readBytes(input)
+    local available = input:available()
+    local size = math.max(DEFAULT_BUFFER_SIZE, available)
+    local buffer = ByteArrayOutputStream(size)
+    M.copyTo(input, buffer)
+    return buffer:toByteArray()
+end
+
+return M

webui/src/main/assets/lua/std.lua

@@ -1,5 +1,17 @@
 -- std.lua
 
+_G.String                       = java.import("java.lang.String")
+_G.ByteArrayInputStream         = java.import("java.io.ByteArrayInputStream")
+_G.ByteArrayOutputStream        = java.import("java.io.ByteArrayOutputStream")
+_G.BufferedInputStream          = java.import("java.io.BufferedInputStream")
+_G.Array                        = java.import("java.lang.reflect.Array")
+_G.Byte                         = java.import("java.lang.Byte")
+_G.Object                       = java.import("java.lang.Object")
+
+_G.context                      = _WX_OPTIONS:getContext()
+-- android.net.Uri
+_G.domain                       = _WX_OPTIONS:getDomain()
+
 local M = {}
 
 local String  = java.import("java.lang.String")

webui/src/main/assets/lua/str.lua

@@ -1,15 +1,17 @@
--- str.lua
+require("wx:std")
 
 local M = {}
 
 function M.startsWith(s, prefix) return s:sub(1, #prefix) == prefix end
 function M.endsWith(s, suffix)   return suffix == "" or s:sub(-#suffix) == suffix end
 function M.trim(s)               return s:match("^%s*(.-)%s*$") end
 function M.jsonString(s)         return '"' .. tostring(s):gsub('"', '\\"') .. '"' end
+function M.stringToStream(s)     return ByteArrayInputStream(String(s):getBytes("UTF-8")) end
 
-_G.startsWith = M.startsWith
-_G.endsWith   = M.endsWith
-_G.trim       = M.trim
-_G.jsonString = M.jsonString
+_G.startsWith       = M.startsWith
+_G.endsWith         = M.endsWith
+_G.trim             = M.trim
+_G.jsonString       = M.jsonString
+_G.stringToStream   = M.stringToStream
 
 return M

webui/src/main/assets/lua/webview.lua

@@ -1,44 +1,53 @@
--- webview.lua
+require("wx:std")
+require("wx:str")
 
-local String = java.import("java.lang.String")
-local ByteArrayInputStream = java.import("java.io.ByteArrayInputStream")
-local WebResourceResponse = java.import("android.webkit.WebResourceResponse")
+local R                 = java.import("android.R")
+local WX_R              = java.import("com.dergoogler.mmrl.webui.R")
+local HWUI_R            = java.import("com.dergoogler.mmrl.hybridwebui.R")
+local Uri               = java.import("android.net.Uri")
+
+_G.WebResourceResponse  = java.import("android.webkit.WebResourceResponse")
+_G.WebViewFeature       = java.import("androidx.webkit.WebViewFeature")
+_G.WebMessageCompat     = java.import("androidx.webkit.WebMessageCompat")
+
+local rootView          = context:getWindow():getDecorView():getRootView()
+local wxView            = rootView:findViewById(WX_R.id.wxview)
 
 local M = {}
 
--- Stream helper
+-- M.console               = wxView:console
+
+function M.registerPathHandler(path, handler, authority)
+    if authority == nil then
+        authority = domain:toString()
+    end
+
+    local handlerProxy = java.proxy("com.dergoogler.mmrl.hybridwebui.HybridWebUI$PathHandler", handler)
+    wxView:addPathHandler(path, handlerProxy, Uri:parse(authority))
+end
 
-function M.stringToStream(s)
-    str = String(s):getBytes("UTF-8")
-    return ByteArrayInputStream(str)
+function M.registerEventListener(objectName, listener)
+    local listenerProxy = java.proxy("com.dergoogler.mmrl.hybridwebui.HybridWebUI$EventListener", listener)
+    wxView:addEventListener(objectName, listenerProxy)
 end
 
 -- Response helpers
 
 function M.htmlResponse(body, status)
-    return WebResourceResponse("text/html",        "UTF-8", status or 200, "OK", {}, M.stringToStream(body))
+    return WebResourceResponse("text/html",        "UTF-8", status or 200, "OK", {}, stringToStream(body))
 end
 
 function M.jsonResponse(body, status)
-    return WebResourceResponse("application/json", "UTF-8", status or 200, "OK", {}, M.stringToStream(body))
+    return WebResourceResponse("application/json", "UTF-8", status or 200, "OK", {}, stringToStream(body))
 end
 
 function M.textResponse(body, status)
-    return WebResourceResponse("text/plain",       "UTF-8", status or 200, "OK", {}, M.stringToStream(body))
+    return WebResourceResponse("text/plain",       "UTF-8", status or 200, "OK", {}, stringToStream(body))
 end
 
 function M.errorResponse(code, message)
-    return WebResourceResponse("text/plain",       "UTF-8", code, message,  {}, M.stringToStream(message))
+    return WebResourceResponse("text/plain",       "UTF-8", code, message,  {} , stringToStream(message))
 end
 
--- Handler registration
-
-function M.registerPathHandler(path, handler, authority)
-    _registerPathHandler:invoke(path, handler, authority)
-end
-
-function M.registerEventListener(objectName, event)
-    _registerEventListener:invoke(objectName, event)
-end
 
 return M