1 files changed, 205 insertions, 0 deletions
diff --git a/lua/lvim/utils/init.lua b/lua/lvim/utils/init.lua
new file mode 100644
index 00000000..cebbe75c
--- /dev/null
+++ b/lua/lvim/utils/init.lua
@@ -0,0 +1,205 @@
+local utils = {}
+local Log = require "lvim.core.log"
+local uv = vim.loop
+
+-- recursive Print (structure, limit, separator)
+local function r_inspect_settings(structure, limit, separator)
+  limit = limit or 100 -- default item limit
+  separator = separator or "." -- indent string
+  if limit < 1 then
+    print "ERROR: Item limit reached."
+    return limit - 1
+  end
+  if structure == nil then
+    io.write("-- O", separator:sub(2), " = nil\n")
+    return limit - 1
+  end
+  local ts = type(structure)
+
+  if ts == "table" then
+    for k, v in pairs(structure) do
+      -- replace non alpha keys with ["key"]
+      if tostring(k):match "[^%a_]" then
+        k = '["' .. tostring(k) .. '"]'
+      end
+      limit = r_inspect_settings(v, limit, separator .. "." .. tostring(k))
+      if limit < 0 then
+        break
+      end
+    end
+    return limit
+  end
+
+  if ts == "string" then
+    -- escape sequences
+    structure = string.format("%q", structure)
+  end
+  separator = separator:gsub("%.%[", "%[")
+  if type(structure) == "function" then
+    -- don't print functions
+    io.write("-- lvim", separator:sub(2), " = function ()\n")
+  else
+    io.write("lvim", separator:sub(2), " = ", tostring(structure), "\n")
+  end
+  return limit - 1
+end
+
+function utils.generate_settings()
+  -- Opens a file in append mode
+  local file = io.open("lv-settings.lua", "w")
+
+  -- sets the default output file as test.lua
+  io.output(file)
+
+  -- write all `lvim` related settings to `lv-settings.lua` file
+  r_inspect_settings(lvim, 10000, ".")
+
+  -- closes the open file
+  io.close(file)
+end
+
+-- autoformat
+function utils.toggle_autoformat()
+  if lvim.format_on_save then
+    require("lvim.core.autocmds").define_augroups {
+      autoformat = {
+        {
+          "BufWritePre",
+          "*",
+          ":silent lua vim.lsp.buf.formatting_sync()",
+        },
+      },
+    }
+    Log:debug "Format on save active"
+  end
+
+  if not lvim.format_on_save then
+    vim.cmd [[
+      if exists('#autoformat#BufWritePre')
+        :autocmd! autoformat
+      endif
+    ]]
+    Log:debug "Format on save off"
+  end
+end
+
+function utils.unrequire(m)
+  package.loaded[m] = nil
+  _G[m] = nil
+end
+
+function utils.gsub_args(args)
+  if args == nil or type(args) ~= "table" then
+    return args
+  end
+  local buffer_filepath = vim.fn.fnameescape(vim.api.nvim_buf_get_name(0))
+  for i = 1, #args do
+    args[i] = string.gsub(args[i], "${FILEPATH}", buffer_filepath)
+  end
+  return args
+end
+
+--- Returns a table with the default values that are missing.
+--- either paramter can be empty.
+--@param config (table) table containing entries that take priority over defaults
+--@param default_config (table) table contatining default values if found
+function utils.apply_defaults(config, default_config)
+  config = config or {}
+  default_config = default_config or {}
+  local new_config = vim.tbl_deep_extend("keep", vim.empty_dict(), config)
+  new_config = vim.tbl_deep_extend("keep", new_config, default_config)
+  return new_config
+end
+
+--- Checks whether a given path exists and is a file.
+--@param path (string) path to check
+--@returns (bool)
+function utils.is_file(path)
+  local stat = uv.fs_stat(path)
+  return stat and stat.type == "file" or false
+end
+
+--- Checks whether a given path exists and is a directory
+--@param path (string) path to check
+--@returns (bool)
+function utils.is_directory(path)
+  local stat = uv.fs_stat(path)
+  return stat and stat.type == "directory" or false
+end
+
+utils.join_paths = _G.join_paths
+
+function utils.write_file(path, txt, flag)
+  uv.fs_open(path, flag, 438, function(open_err, fd)
+    assert(not open_err, open_err)
+    uv.fs_write(fd, txt, -1, function(write_err)
+      assert(not write_err, write_err)
+      uv.fs_close(fd, function(close_err)
+        assert(not close_err, close_err)
+      end)
+    end)
+  end)
+end
+
+function utils.debounce(ms, fn)
+  local timer = vim.loop.new_timer()
+  return function(...)
+    local argv = { ... }
+    timer:start(ms, 0, function()
+      timer:stop()
+      vim.schedule_wrap(fn)(unpack(argv))
+    end)
+  end
+end
+
+function utils.search_file(file, args)
+  local Job = require "plenary.job"
+  local stderr = {}
+  local stdout, ret = Job
+    :new({
+      command = "grep",
+      args = { args, file },
+      cwd = get_cache_dir(),
+      on_stderr = function(_, data)
+        table.insert(stderr, data)
+      end,
+    })
+    :sync()
+  return stdout, ret, stderr
+end
+
+function utils.file_contains(file, query)
+  local stdout, ret, stderr = utils.search_file(file, query)
+  if ret == 0 then
+    return true
+  end
+  if not vim.tbl_isempty(stderr) then
+    error(vim.inspect(stderr))
+  end
+  if not vim.tbl_isempty(stdout) then
+    error(vim.inspect(stdout))
+  end
+  return false
+end
+
+function utils.log_contains(query)
+  local logfile = require("lvim.core.log"):get_path()
+  local stdout, ret, stderr = utils.search_file(logfile, query)
+  if ret == 0 then
+    return true
+  end
+  if not vim.tbl_isempty(stderr) then
+    error(vim.inspect(stderr))
+  end
+  if not vim.tbl_isempty(stdout) then
+    error(vim.inspect(stdout))
+  end
+  if not vim.tbl_isempty(stderr) then
+    error(vim.inspect(stderr))
+  end
+  return false
+end
+
+return utils
+
+-- TODO: find a new home for these autocommands