fix(installer): 更新安装程序版本至0.3.7 Beta 9

docs(help): 更新about.hlp中的网站链接至新域名
refactor(help): 优化pkg_download_en.hlp的代码块显示格式
feat(imageview): 添加图像加载错误提示和注释说明
style(time): 修复帮助文档格式错误
feat(shell): 添加欢迎界面图形显示
test: 新增imageview和help文档的测试程序

data/computercraft/lua/rom/programs/imageview.lua

@@ -1,4 +1,6 @@
 -- imageview.lua: Image viewer that loads from URL
+-- This program uses paintutils library for image handling (CC Tweaked standard)
+-- There is no 'image' API; we use paintutils.loadImage and paintutils.drawImage
 local http = require("http")
 local paintutils = require("paintutils")
 local term = require("term")
@@ -59,6 +61,7 @@ local function main(args)
 
   if not success then
     print("Error loading image: " .. image)
+  print("Make sure the URL points to a valid image file compatible with CC Tweaked.")
     return
   end
 

data/computercraft/lua/rom/programs/shell.lua

@@ -27,10 +27,24 @@ local textutils = require("textutils")
 
 if os.version then
   textutils.coloredPrint(colors.yellow, os.version(), colors.white)
+  local image = paintutils.parseImage([[
+ f  f
+
+f    f
+ ffff
+  ]])
+  paintutils.drawImage(image, term.getCursorPos())
 else
   textutils.coloredPrint(colors.yellow, rc.version(), colors.white)
+    local image = paintutils.parseImage([[
+ f  f
+
+f    f
+ ffff
+  ]])
+  paintutils.drawImage(image, term.getCursorPos())
 end
--- textutils.coloredPrint(colors.yellow, "Welcome using the beta version of LeonOS!"colors.white)
+textutils.coloredPrint(colors.yellow, "Welcome using the beta version of LeonOS!", colors.white)
 
 thread.vars().parentShell = thread.id()
 shell.init(_ENV)

data/computercraft/lua/rom/programs/test_help_format.lua

@@ -0,0 +1,44 @@
+-- test_help_format.lua: Test the formatted pkg_download_en help document
+local help = require("rom/programs/help")
+local term = require("term")
+
+print("=== Testing pkg_download_en Help Document Formatting ===")
+print("This test will display the pkg_download_en help document")
+print("to verify that code blocks are properly formatted with colors.")
+print("\n3...")
+os.sleep(1)
+print("2...")
+os.sleep(1)
+print("1...")
+os.sleep(1)
+
+-- Clear screen and display help document
+term.clear()
+term.setCursorPos(1, 1)
+
+local success, content = pcall(function()
+  return help.loadTopic("pkg_download_en")
+end)
+
+if success and content then
+  -- Process the content to simulate how help system would display it
+  print("=== pkg_download_en Help Document ===")
+  for line in content:gmatch("[^
+]+") do
+    -- Handle color commands
+    if line:match("^>>color yellow") then
+      term.setTextColor(0xFFFF00)
+    elseif line:match("^>>color white") then
+      term.setTextColor(0xFFFFFF)
+    else
+      print(line)
+    end
+  end
+  term.setTextColor(0xFFFFFF) -- Reset to white
+  print("\n=== End of Help Document ===")
+else
+  print("Error: Could not load pkg_download_en help document.")
+end
+
+print("\nTest finished. Press any key to return.")
+os.pullEvent("key")

data/computercraft/lua/rom/programs/test_imageview.lua

@@ -0,0 +1,34 @@
+-- test_imageview.lua: Test the imageview command
+local shell = require("shell")
+
+print("=== Image Viewer Test ===")
+print("Note: This program uses the paintutils library for image handling,")
+print("      not an 'image' API. CC Tweaked doesn't have an 'image' API.")
+print("")
+print("Testing imageview command with a sample image...")
+print("This will attempt to load a test image from the internet.")
+print("Press Ctrl+T to stop the test if needed.")
+print("\nNote: You need an internet connection for this test.")
+print("\n3...")
+os.sleep(1)
+print("2...")
+os.sleep(1)
+print("1...")
+os.sleep(1)
+
+-- Use a sample image URL that's known to work
+local testImageUrl = "http://time.syiban.com/img/xcx.png"
+
+-- Execute the imageview command with the test URL
+local success, errorMsg = shell.execute("imageview " .. testImageUrl)
+
+if success then
+  print("\nTest completed successfully.")
+  print("The image viewer is working correctly with paintutils.")
+else
+  print("\nTest failed: " .. errorMsg)
+  print("Make sure you have internet access and the URL is valid.")
+end
+
+print("\nTest finished. Press any key to return.")
+os.pullEvent("key")

data/computercraft/lua/rom/programs/time.lua

@@ -18,11 +18,12 @@ Formats for --format option:
 ]])
   print("  %A: Full weekday name")
   print("  %B: Full month name")
-  print("
-Examples:")
-  print("  time                     # Show current time in default format")
-  print("  time --format '%Y-%m-%d %H:%M:%S'  # Show time as YYYY-MM-DD HH:MM:SS")
-  print("  time -f '%A, %B %d, %Y'  # Show time as 'Monday, January 01, 2023'")
+  print([[
+Examples:
+  time                     # Show current time in default format
+  time --format '%Y-%m-%d %H:%M:%S'  # Show time as YYYY-MM-DD HH:MM:SS
+  time -f '%A, %B %d, %Y'  # Show time as 'Monday, January 01, 2023'
+]])
 end
 
 -- 主函数