First Commit

lua/nvim-java.lua

@@ -0,0 +1,196 @@
+local function create_java_project()
+  -- Get project name from user input
+  vim.ui.input({ prompt = "Enter project name: " }, function(project_name)
+    if not project_name or project_name == "" then
+      print("Project creation canceled.")
+      return
+    end
+
+    -- Define the project root path within ~/Projects
+    local project_root = vim.fn.expand("~") .. "/Projects/" .. project_name
+
+    -- Define the directory paths
+    local root_dir = project_root .. "/root"
+    local src_dir = root_dir .. "/src"
+    local out_dir = root_dir .. "/out"
+
+    -- Create the directories if they don't exist
+    os.execute("mkdir -p " .. src_dir)
+    os.execute("mkdir -p " .. out_dir)
+
+    -- Create Main.java in src/
+    local main_java_path = src_dir .. "/Main.java"
+    local main_java_content = [[
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("Hello, World!");
+    }
+}
+]]
+    -- Write Main.java file
+    local file = io.open(main_java_path, "w")
+    if file then
+      file:write(main_java_content)
+      file:close()
+    else
+      print("Error creating Main.java")
+      return
+    end
+
+    -- Open Main.java in Neovim
+    vim.cmd("edit " .. main_java_path)
+    print("Java project '" .. project_name .. "' created successfully at " .. project_root)
+  end)
+end
+
+local function create_new_java_file()
+  -- Get the class name for the new Java file
+  vim.ui.input({ prompt = "Enter class name for new Java file: " }, function(class_name)
+    if not class_name or class_name == "" then
+      print("Class creation canceled.")
+      return
+    end
+
+    -- Get the current working directory
+    local current_dir = vim.fn.expand("%:p:h")
+
+    -- Check if we're in a valid project directory
+    local root_dir = current_dir:match("(.*)/root/src")  -- Try to extract the project root
+    if not root_dir then
+      print("Error: src directory not found.")
+      return
+    end
+
+    -- Construct the path to the src directory dynamically
+    local src_dir = root_dir .. "/root/src"
+
+    -- Ensure that the src directory exists
+    if vim.fn.isdirectory(src_dir) == 0 then
+      print("Error: src directory not found.")
+      return
+    end
+
+    local java_file_path = src_dir .. "/" .. class_name .. ".java"
+
+    -- Java content template
+    local java_content = string.format([[
+public class %s {
+  // New File
+}
+]], class_name)
+
+    -- Write the Java class to the file
+    local file = io.open(java_file_path, "w")
+    if file then
+      file:write(java_content)
+      file:close()
+      vim.cmd("edit " .. java_file_path)
+      print( class_name .. ".java created successfully!")
+    else
+      print("Error creating " .. class_name .. ".java")
+    end
+  end)
+end
+
+local function javabuild()
+  -- Get the current directory (where the user is editing)
+  local current_dir = vim.fn.expand("%:p:h")
+
+  -- Try to extract the project root by looking for "root/src" in the path
+  local project_root = current_dir:match("(.*)/root/src")
+
+  if not project_root then
+    print("Error: You must be inside the 'src' directory of a project.")
+    return
+  end
+
+  -- Define the source and output directories
+  local src_dir = project_root .. "/root/src"
+  local out_dir = project_root .. "/root/out"
+
+  -- Ensure that the output directory exists
+  vim.fn.mkdir(out_dir, "p")
+
+  -- Compile all Java files in the src/ directory and output to out/
+  local compile_command = "javac -d " .. out_dir .. " " .. src_dir .. "/*.java"
+  local compile_status = vim.fn.system(compile_command)
+
+  -- Check if the compilation was successful
+  if vim.v.shell_error ~= 0 then
+    print("Error during compilation:\n" .. compile_status)
+    return
+  end
+
+  print("Compilation successful!")
+end
+local function open_float_terminal(cmd)
+  -- Get the total dimensions of the Neovim window
+  local ui = vim.api.nvim_list_uis()[1]
+  local width = math.floor(ui.width * 0.9)   -- 90% of the window width
+  local height = math.floor(ui.height * 0.9) -- 90% of the window height
+  local row = math.floor(ui.height * 0.05)   -- 5% padding top
+  local col = math.floor(ui.width * 0.05)    -- 5% padding left/right
+
+  -- Create a new buffer for the floating terminal
+  local buf = vim.api.nvim_create_buf(false, true)  -- Create a new buffer (no file, no listed)
+
+  -- Floating window options
+  local opts = {
+    relative = 'editor',
+    width = width - 10,  -- Account for left/right padding
+    height = height - 10, -- Account for top/bottom padding
+    row = row + 5,        -- Shift down for padding
+    col = col + 5,        -- Shift right for padding
+    style = "minimal",    -- Removes unnecessary UI elements
+    border = "none",      -- Removes border for transparency
+  }
+
+  -- Open the floating window
+  local win = vim.api.nvim_open_win(buf, true, opts)
+
+  -- Apply transparency and Pmenu styling
+  vim.api.nvim_win_set_option(win, "winblend", vim.o.pumblend) -- Match `Pmenu` transparency
+  vim.api.nvim_win_set_option(win, "winhighlight", "Normal:Pmenu,FloatBorder:Pmenu")
+
+  -- Enable line numbers in the floating window
+  vim.api.nvim_win_set_option(win, "number", true)
+  vim.api.nvim_win_set_option(win, "relativenumber", false)  -- Use absolute line numbers
+
+  -- Start the interactive terminal
+  vim.fn.termopen(cmd)
+
+  -- Automatically enter insert mode for smooth interaction
+  vim.cmd("startinsert")
+
+  -- Map <Esc> in terminal and normal mode to close the floating window
+  vim.api.nvim_buf_set_keymap(buf, "t", "<Esc>", "<C-\\><C-n>:q<CR>", { noremap = true, silent = true })
+  vim.api.nvim_buf_set_keymap(buf, "n", "<Esc>", ":q<CR>", { noremap = true, silent = true })
+  vim.api.nvim_buf_set_keymap(buf, 'i', '<Esc>', '<Esc>:q!<CR>', { noremap = true, silent = true })
+
+  return buf, win
+end
+
+local function javarun_float()
+  -- Get the current directory (where the user is editing)
+  local current_dir = vim.fn.expand("%:p:h")
+
+  -- Try to extract the project root by looking for "root/src" in the path
+  local project_root = current_dir:match("(.*)/root/src")
+
+  if not project_root then
+    print("Error: You must be inside the 'src' directory of a project.")
+    return
+  end
+
+  -- Define the output directory where the .class files are located
+  local out_dir = project_root .. "/root/out"
+
+  -- Run the Main class from the output directory in the floating terminal
+  open_float_terminal("java -cp " .. out_dir .. " Main")
+end
+
+-- Register Neovim commands
+vim.api.nvim_create_user_command("NewJavaProject", create_java_project, {})
+vim.api.nvim_create_user_command("JavaBuild", javabuild, {})
+vim.api.nvim_create_user_command("NewJavaFile", create_new_java_file, {})
+vim.api.nvim_create_user_command("JavaRun", javarun_float, {})