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lua/core/keymap.lua

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+-- ===
+-- === map function
+-- ===
+
+local function mapkey(mode, lhs, rhs)
+	vim.keymap.set(mode, lhs, rhs, { silent = true, nowait = true })
+end
+
+local function mapcmd(key, cmd)
+	vim.keymap.set("n", key, "<cmd>" .. cmd .. "<cr>", { silent = true })
+end
+
+local function maplua(modes, key, action, desc)
+	vim.keymap.set(modes, key, action, { silent = true, noremap = true, desc = desc })
+end
+
+-- ===
+-- === Basic Mappings
+-- ===
+
+-- leader键设置为空格,; as :
+vim.g.mapleader = " "
+mapkey({ "n", "x", "o" }, ";", ":")
+
+-- 上/下一个搜索结果以及取消搜索结果高亮
+mapkey({ "n", "x", "o" }, "=", "nzz")
+mapkey({ "n", "x", "o" }, "-", "Nzz")
+mapcmd("<leader><cr>", "nohlsearch")
+
+-- 保存和退出
+mapkey({ "n", "x", "o" }, "S", ":wall<cr>")
+mapkey({ "n", "x", "o" }, "Q", ":qall<cr>")
+
+-- 撤销与反撤销
+mapkey({ "n", "x", "o" }, "l", "u")
+mapkey({ "n", "x", "o" }, "L", "<c-r>")
+
+-- 插入
+mapkey({ "n", "x", "o" }, "k", "i")
+mapkey({ "n", "x", "o" }, "K", "I")
+
+mapkey('n', '<C-n>', '<C-o>')
+
+-- 折叠
+mapkey({ "n", "x", "o" }, "<leader>o", "za")
+mapkey("x", "<leader>o", "zf") -- 可视模式创造折叠
+-- 读取保存的折叠
+-- mapkey({ "n", "x", "o" }, "<leader>a", ":loadview<cr>")
+
+
+-- 以下两个映射默认了
+-- make Y to copy till the end of the line
+-- mapkey('','Y','y$')
+
+-- make D to delete till the end of the line
+-- mapkey('','D','d$')
+
+-- 打开lazygit,已用fm-nvim插件
+-- mapcmd('<c-g>',':tabe<CR>:-tabmove<CR>:term lazygit')
+
+-- ===
+-- === treesitter
+-- ===
+
+-- 删除i键映射
+vim.api.nvim_create_autocmd("VimEnter", { -- 所有启动脚本、默认脚本都加载完毕后的最后一个事件
+	callback = function()
+		-- 使用 pcall 忽略如果键位不存在时的报错
+		pcall(vim.keymap.del, { "x", "o" }, "in")
+	end,
+})
+
+local function smart_select(ts_method, lsp_dir)
+	return function()
+		-- 如果当前不是普通文件（比如 Quickfix、帮助文档、终端等）那么我们直接发送一个原生的 <CR> 按键并退出，恢复回车原本的功能
+		if lsp_dir == 1 and vim.bo.buftype ~= "" then
+			local cr = vim.api.nvim_replace_termcodes("<CR>", true, false, true)
+			vim.api.nvim_feedkeys(cr, "n", false)
+			return
+		end
+		if vim.treesitter.get_parser(nil, nil, { error = false }) then
+			require("vim.treesitter._select")[ts_method](vim.v.count1)
+		else
+			vim.lsp.buf.selection_range(lsp_dir * vim.v.count1)
+		end
+	end
+end
+-- 扩大范围 (回车键)：不断向上寻找父节点 (等价于官方的 an)
+maplua({ "x", "o", "n" }, "<CR>", smart_select("select_parent", 1), "扩大 Treesitter/LSP 范围")
+-- 缩小范围 (退格键)：不断向下寻找子节点
+maplua({ "x", "o" }, "<BS>", smart_select("select_child", -1), "缩小 Treesitter/LSP 范围")
+
+-- ===
+-- === Cursor Movement
+-- ===
+-- New cursor movement (the default arrow keys are used for resizing windows)
+
+--     ^
+--     u
+-- < n   i >
+--     e
+--     v
+mapkey({ "n", "x", "o" }, "n", "h")
+mapkey({ "n", "x", "o" }, "u", "k")
+mapkey({ "n", "x", "o" }, "e", "j")
+mapkey({ "n", "x", "o" }, "i", "l")
+
+-- 更快的导航
+mapkey({ "n", "x", "o" }, "U", "5k")
+mapkey({ "n", "x", "o" }, "E", "5j")
+mapkey({ "n", "x", "o" }, "N", "0")
+mapkey({ "n", "x", "o" }, "I", "$")
+-- 向下滚动半页，<C-u>默认向上滚动半页
+mapkey({ "n", "x", "o" }, "<C-e>", "<C-d>")
+
+-- 更快的行导航
+mapkey({ "n", "x", "o" }, "W", "5W")
+mapkey({ "n", "x", "o" }, "B", "5B")
+
+-- ===
+-- === Window management
+-- ===
+
+-- 使用<space> + 新方向键 在分屏之间移动
+mapkey({ "n", "x", "o" }, "<LEADER>w", "<C-w>w")
+mapkey({ "n", "x", "o" }, "<LEADER>u", "<C-w>k")
+mapkey({ "n", "x", "o" }, "<LEADER>e", "<C-w>j")
+mapkey({ "n", "x", "o" }, "<LEADER>n", "<C-w>h")
+mapkey({ "n", "x", "o" }, "<LEADER>i", "<C-w>l")
+
+-- 使用s + 新方向键 进行分屏
+mapcmd("su", "set nosplitbelow<CR>:split<CR>:set splitbelow")
+mapcmd("se", "set splitbelow<CR>:split")
+mapcmd("sn", "set nosplitright<CR>:vsplit<CR>:set splitright")
+mapcmd("si", "set splitright<CR>:vsplit")
+
+-- 使用方向键来调整窗口大小
+mapcmd("<up>", "res +5")
+mapcmd("<down>", "res -5")
+mapcmd("<left>", "vertical resize-5")
+mapcmd("<right>", "vertical resize+5")
+
+-- 使分屏窗口上下分布
+mapkey({ "n", "x", "o" }, "sh", "<C-w>t<C-w>K")
+-- 使分屏窗口左右分布
+mapkey({ "n", "x", "o" }, "sv", "<C-w>t<C-w>H")
+
+-- 按 <SPACE> + q 关闭当前窗口下方的窗口
+mapkey({ "n", "x", "o" }, "<LEADER>q", "<C-w>j:q<CR>")
+
+-- ===
+-- === Tab management
+-- ===
+
+-- tu创建新标签,已用bufferline.nvim替代
+-- mapcmd("tu", "tabe")
+-- 在标签之间移动
+-- mapcmd('tn','-tabnext')
+-- mapcmd('ti','+tabnext')
+
+-- 移动标签的位置
+-- mapcmd('tmn','-tabmove')
+-- mapcmd('tmi','+tabmove')
+
+-- 关闭当前标签,已用close-buffers替代
+-- mapcmd('tq','tabc')
+
+-- ===
+-- === 批量缩进方法
+-- ===
+-- 操作为，esc从编辑模式退到命令模式，将光标移到需要缩进的行的行首，然后按shift+v，可以看到该行已被选中，且左下角提示为“可视”
+-- 按键盘上的上下方向键，如这里按向下的箭头，选中所有需要批量缩进的行
+-- 按shift+>,是向前缩进一个tab值，按shift+<，则是缩回一个tab值
+
+mapkey("x", "<", "<gv")
+mapkey("x", ">", ">gv")
+mapkey("x", "<s-tab>", "<gv")
+mapkey("x", "<tab>", ">gv")
+
+-- ===
+-- === 批量替换
+-- ===
+
+-- 设置快捷键，替换所有文件内容
+mapcmd("<leader>sa", "lua search_and_replace()")
+-- 设置快捷键，替换当前文件内容
+mapcmd("<leader>sr", "lua search_and_replace_current_file()")
+
+-- 替换当前目录及子目录下所有文件内容
+function search_and_replace()
+	-- 获取用户输入的查找内容,使用 input() 函数动态输入替换内容
+	local search_text = vim.fn.input("Search for: ")
+
+	-- 获取用户输入的替换内容
+	local replace_text = vim.fn.input("Replace with: ")
+
+	-- 执行替换命令
+	if search_text ~= "" and replace_text ~= "" then
+		local cmd = 'execute "!grep -rl \\"'
+				.. search_text
+				.. '\\" ./ | xargs sed -i \\"s/'
+				.. search_text
+				.. "/"
+				.. replace_text
+				.. '/g\\""'
+		vim.cmd(cmd)
+		print("Replaced all occurrences of '" .. search_text .. "' with '" .. replace_text .. "'")
+	else
+		print("Search or replace text cannot be empty.")
+	end
+end
+
+-- 替换当前文件内容
+function search_and_replace_current_file()
+	-- 获取用户输入的查找内容
+	local search_text = vim.fn.input("Search for in current file: ")
+
+	-- 获取用户输入的替换内容
+	local replace_text = vim.fn.input("Replace with: ")
+
+	-- 执行替换命令
+	if search_text ~= "" and replace_text ~= "" then
+		-- 使用 sed 替换当前文件中的匹配内容，并正确转义引号
+		local cmd = string.format("!sed -i 's/%s/%s/g' %%", search_text, replace_text)
+		vim.cmd(cmd)
+		print("Replaced all occurrences of '" .. search_text .. "' with '" .. replace_text .. "' in current file.")
+	else
+		print("Search or replace text cannot be empty.")
+	end
+end
+
+-- ===
+-- === 临时“存档”文件当前的版本，并与后续的修改进行 diff 对比
+-- ===
+
+-- 创建 :DiffOrig 自定义命令，这个命令会打开一个垂直分屏，加载当前文件存盘时的版本，并启动 diff 模式
+vim.api.nvim_create_user_command(
+	'DiffOrig',
+	function()
+		-- 在创建新窗口前，先保存当前文件的 filetype
+		local original_filetype = vim.bo.filetype
+		-- 打开一个垂直分屏，并准备好临时缓冲区
+		vim.cmd('vert new | set buftype=nofile')
+		-- 在新的临时缓冲区里，设置我们刚才保存的 filetype，这是确保语法高亮的关键！
+		vim.bo.filetype = original_filetype
+		-- 读取原始文件的磁盘内容，并启动 diff
+		vim.cmd('read ++edit # | 0d_ | diffthis | wincmd p | diffthis')
+	end,
+	{ force = true }
+)
+-- <leader>dd 将会执行 :DiffOrig 命令
+mapcmd('<leader>dd', 'DiffOrig')
+
+-- ===
+-- === Other useful stuff
+-- ===
+
+-- 打开一个终端窗口
+mapcmd("<LEADER>/", "set splitbelow<CR>:split<CR>:res +10<CR>:term")
+
+-- 按两下空格跳转到占位符<++>,并进入插入模式
+mapkey({ "n", "x", "o" }, "<LEADER><LEADER>", "<Esc>/<++><CR>:nohlsearch<CR>c4l")
+
+-- 拼写检查
+mapcmd("<LEADER>sc", "set spell!")
+
+-- ===
+-- ===  运行代码(该功能已经迁移到plugins/coderunner.lua)
+-- ===
+
+-- vim.cmd([[
+--  au filetype dart noremap r :wall<cr>:Telescope flutter commands<cr>
+--  au filetype python noremap r :wall<cr>:set splitbelow<cr>:sp<cr>:term uv run %<cr>
+--  au filetype go noremap r :wall<cr>:set splitbelow<cr>:sp<cr>:term go run %<cr>
+--  au filetype markdown noremap r :PeekClose<cr>:PeekOpen<cr>
+--  au filetype rust noremap r :wall<cr>:set splitbelow<cr>:sp<cr>:term cargo run<cr>
+-- ]])
+
+
+-- ===
+-- === map function external environment
+-- ===
+
+-- 下面的函数给外部文件调用的
+-- 使用示例如下
+-- local map = require("core.keymap")
+-- map:cmd('<space>p','PasteImg')
+local map = {}
+function map:key(mode, lhs, rhs)
+	vim.keymap.set(mode, lhs, rhs, { silent = true })
+end
+
+function map:cmd(key, cmd)
+	vim.keymap.set("n", key, "<cmd>" .. cmd .. "<cr>", { silent = true })
+end
+
+function map:lua(key, txt_or_func)
+	if type(txt_or_func) == "string" then
+		vim.keymap.set("n", key, "<cmd>lua " .. txt_or_func .. "<cr>", { silent = true })
+	else
+		vim.keymap.set("n", key, txt_or_func, { silent = true })
+	end
+end
+
+return map