init plugin

lua/tree.lua

@@ -0,0 +1,95 @@
+local dir_struct = vim.fn.systemlist('ls')
+local sys = function(v) vim.fn.system(v) end
+local syslist = function(v) vim.fn.systemlist(v) end
+local api = vim.api
+local buf = nil
+local win = nil
+
+local function open()
+    local win_width = 30
+    local options = {
+        bufhidden = 'wipe';
+        buftype = 'nowrite';
+        modifiable = false;
+    }
+
+    buf = api.nvim_create_buf(false, true)
+
+    for opt, val in pairs(options) do
+        api.nvim_buf_set_option(buf, opt, val)
+    end
+
+    api.nvim_command('topleft '..win_width..'vnew | set nonumber norelativenumber')
+    win = api.nvim_win_get_number(0)
+    api.nvim_win_set_buf(win, buf)
+end
+
+local function update_view()
+    api.nvim_buf_set_option(buf, 'modifiable', true)
+    api.nvim_buf_set_lines(buf, 1, -1, false, dir_struct)
+    api.nvim_buf_set_option(buf, 'modifiable', false)
+end
+
+local function is_dir(path)
+    return string.match(sys('ls -l '..path), 'total [0-9].*') ~= nil
+end
+
+local function close()
+    api.nvim_win_close(win, true)
+    win = nil
+    buf = nil
+end
+
+local function set_mappings()
+    local mappings = {
+        ['<CR>'] = 'open_file("edit")';
+        ['<C-v>'] = 'open_file("vsplit")';
+        ['<C-x>'] = 'open_file("split")';
+        f = 'find_file()';
+    }
+
+    for k,v in pairs(mappings) do
+        api.nvim_buf_set_keymap(buf, 'n', k, ':lua require"tree".'..v..'<cr>', {
+            nowait = true, noremap = true, silent = true
+        })
+    end
+end
+
+local function open_file(open_type)
+    local str = api.nvim_get_current_line()
+    if is_dir(str) then
+        local cur_dir = syslist('ls')
+        local sub_dir = syslist('ls')
+        -- local final_data = {}
+
+        update_view()
+    else
+        print(open_type)
+        -- api.nvim_command(open_type..' '..str)
+    end
+end
+
+local function find_file()
+    local str = api.nvim_get_current_line()
+    print(str)
+end
+
+local function win_open()
+    return false
+end
+
+local function toggle()
+    if win_open() then
+        close()
+    else
+        open()
+        update_view()
+        set_mappings()
+    end
+end
+
+return {
+    toggle = toggle;
+    open_file = open_file;
+    find_file = find_file;
+}