1 files changed, 429 insertions, 0 deletions
diff --git a/start/lspconfig-0.1.8/lua/lspconfig/util.lua b/start/lspconfig-0.1.8/lua/lspconfig/util.lua
new file mode 100644
index 0000000..a06bfa0
--- /dev/null
+++ b/start/lspconfig-0.1.8/lua/lspconfig/util.lua
@@ -0,0 +1,429 @@
+local vim = vim
+local validate = vim.validate
+local api = vim.api
+local lsp = vim.lsp
+local uv = vim.loop
+local nvim_ten = vim.fn.has 'nvim-0.10' == 1
+
+local is_windows = uv.os_uname().version:match 'Windows'
+
+local M = {}
+
+M.default_config = {
+  log_level = lsp.protocol.MessageType.Warning,
+  message_level = lsp.protocol.MessageType.Warning,
+  settings = vim.empty_dict(),
+  init_options = vim.empty_dict(),
+  handlers = {},
+  autostart = true,
+  capabilities = lsp.protocol.make_client_capabilities(),
+}
+
+-- global on_setup hook
+M.on_setup = nil
+
+function M.bufname_valid(bufname)
+  if bufname:match '^/' or bufname:match '^[a-zA-Z]:' or bufname:match '^zipfile://' or bufname:match '^tarfile:' then
+    return true
+  end
+  return false
+end
+
+function M.validate_bufnr(bufnr)
+  validate {
+    bufnr = { bufnr, 'n' },
+  }
+  return bufnr == 0 and api.nvim_get_current_buf() or bufnr
+end
+
+function M.add_hook_before(func, new_fn)
+  if func then
+    return function(...)
+      -- TODO which result?
+      new_fn(...)
+      return func(...)
+    end
+  else
+    return new_fn
+  end
+end
+
+function M.add_hook_after(func, new_fn)
+  if func then
+    return function(...)
+      -- TODO which result?
+      func(...)
+      return new_fn(...)
+    end
+  else
+    return new_fn
+  end
+end
+
+-- Maps lspconfig-style command options to nvim_create_user_command (i.e. |command-attributes|) option names.
+local opts_aliases = {
+  ['description'] = 'desc',
+}
+
+---@param command_definition table<string | integer, any>
+function M._parse_user_command_options(command_definition)
+  ---@type table<string, string | boolean | number>
+  local opts = {}
+  for k, v in pairs(command_definition) do
+    if type(k) == 'string' then
+      local attribute = k.gsub(k, '^%-+', '')
+      opts[opts_aliases[attribute] or attribute] = v
+    elseif type(k) == 'number' and type(v) == 'string' and v:match '^%-' then
+      -- Splits strings like "-nargs=* -complete=customlist,v:lua.something" into { "-nargs=*", "-complete=customlist,v:lua.something" }
+      for _, command_attribute in ipairs(vim.split(v, '%s')) do
+        -- Splits attribute into a key-value pair, like "-nargs=*" to { "-nargs", "*" }
+        local attribute, value = unpack(vim.split(command_attribute, '=', { plain = true }))
+        attribute = attribute.gsub(attribute, '^%-+', '')
+        opts[opts_aliases[attribute] or attribute] = value or true
+      end
+    end
+  end
+  return opts
+end
+
+function M.create_module_commands(module_name, commands)
+  for command_name, def in pairs(commands) do
+    local opts = M._parse_user_command_options(def)
+    api.nvim_create_user_command(command_name, function(info)
+      require('lspconfig')[module_name].commands[command_name][1](unpack(info.fargs))
+    end, opts)
+  end
+end
+
+-- Some path utilities
+M.path = (function()
+  local function escape_wildcards(path)
+    return path:gsub('([%[%]%?%*])', '\\%1')
+  end
+
+  --- @param path string
+  --- @return string
+  local function sanitize(path)
+    if is_windows then
+      path = path:sub(1, 1):upper() .. path:sub(2)
+      path = path:gsub('\\', '/')
+    end
+    return path
+  end
+
+  --- @param filename string
+  --- @return string|false
+  local function exists(filename)
+    local stat = uv.fs_stat(filename)
+    return stat and stat.type or false
+  end
+
+  --- @param filename string
+  --- @return boolean
+  local function is_dir(filename)
+    return exists(filename) == 'directory'
+  end
+
+  --- @param filename string
+  --- @return boolean
+  local function is_file(filename)
+    return exists(filename) == 'file'
+  end
+
+  --- @param path string
+  --- @return boolean
+  local function is_fs_root(path)
+    if is_windows then
+      return path:match '^%a:$'
+    else
+      return path == '/'
+    end
+  end
+
+  --- @param filename string
+  --- @return boolean
+  local function is_absolute(filename)
+    if is_windows then
+      return filename:match '^%a:' or filename:match '^\\\\'
+    else
+      return filename:match '^/'
+    end
+  end
+
+  --- @generic T: string?
+  --- @param path T
+  --- @return T
+  local function dirname(path)
+    local strip_dir_pat = '/([^/]+)$'
+    local strip_sep_pat = '/$'
+    if not path or #path == 0 then
+      return path
+    end
+    local result = path:gsub(strip_sep_pat, ''):gsub(strip_dir_pat, '')
+    if #result == 0 then
+      if is_windows then
+        return path:sub(1, 2):upper()
+      else
+        return '/'
+      end
+    end
+    return result
+  end
+
+  local function path_join(...)
+    return table.concat(M.tbl_flatten { ... }, '/')
+  end
+
+  -- Traverse the path calling cb along the way.
+  local function traverse_parents(path, cb)
+    path = uv.fs_realpath(path)
+    local dir = path
+    -- Just in case our algo is buggy, don't infinite loop.
+    for _ = 1, 100 do
+      dir = dirname(dir)
+      if not dir then
+        return
+      end
+      -- If we can't ascend further, then stop looking.
+      if cb(dir, path) then
+        return dir, path
+      end
+      if is_fs_root(dir) then
+        break
+      end
+    end
+  end
+
+  -- Iterate the path until we find the rootdir.
+  local function iterate_parents(path)
+    local function it(_, v)
+      if v and not is_fs_root(v) then
+        v = dirname(v)
+      else
+        return
+      end
+      if v and uv.fs_realpath(v) then
+        return v, path
+      else
+        return
+      end
+    end
+    return it, path, path
+  end
+
+  local function is_descendant(root, path)
+    if not path then
+      return false
+    end
+
+    local function cb(dir, _)
+      return dir == root
+    end
+
+    local dir, _ = traverse_parents(path, cb)
+
+    return dir == root
+  end
+
+  local path_separator = is_windows and ';' or ':'
+
+  return {
+    escape_wildcards = escape_wildcards,
+    is_dir = is_dir,
+    is_file = is_file,
+    is_absolute = is_absolute,
+    exists = exists,
+    dirname = dirname,
+    join = path_join,
+    sanitize = sanitize,
+    traverse_parents = traverse_parents,
+    iterate_parents = iterate_parents,
+    is_descendant = is_descendant,
+    path_separator = path_separator,
+  }
+end)()
+
+function M.search_ancestors(startpath, func)
+  validate { func = { func, 'f' } }
+  if func(startpath) then
+    return startpath
+  end
+  local guard = 100
+  for path in M.path.iterate_parents(startpath) do
+    -- Prevent infinite recursion if our algorithm breaks
+    guard = guard - 1
+    if guard == 0 then
+      return
+    end
+
+    if func(path) then
+      return path
+    end
+  end
+end
+
+function M.tbl_flatten(t)
+  return nvim_ten and vim.iter(t):flatten(math.huge):totable() or vim.tbl_flatten(t)
+end
+
+function M.get_lsp_clients(filter)
+  return nvim_ten and lsp.get_clients(filter) or lsp.get_active_clients(filter)
+end
+
+function M.root_pattern(...)
+  local patterns = M.tbl_flatten { ... }
+  return function(startpath)
+    startpath = M.strip_archive_subpath(startpath)
+    for _, pattern in ipairs(patterns) do
+      local match = M.search_ancestors(startpath, function(path)
+        for _, p in ipairs(vim.fn.glob(M.path.join(M.path.escape_wildcards(path), pattern), true, true)) do
+          if M.path.exists(p) then
+            return path
+          end
+        end
+      end)
+
+      if match ~= nil then
+        return match
+      end
+    end
+  end
+end
+
+function M.find_git_ancestor(startpath)
+  return M.search_ancestors(startpath, function(path)
+    -- Support git directories and git files (worktrees)
+    if M.path.is_dir(M.path.join(path, '.git')) or M.path.is_file(M.path.join(path, '.git')) then
+      return path
+    end
+  end)
+end
+
+function M.find_mercurial_ancestor(startpath)
+  return M.search_ancestors(startpath, function(path)
+    -- Support Mercurial directories
+    if M.path.is_dir(M.path.join(path, '.hg')) then
+      return path
+    end
+  end)
+end
+
+function M.find_node_modules_ancestor(startpath)
+  return M.search_ancestors(startpath, function(path)
+    if M.path.is_dir(M.path.join(path, 'node_modules')) then
+      return path
+    end
+  end)
+end
+
+function M.find_package_json_ancestor(startpath)
+  return M.search_ancestors(startpath, function(path)
+    if M.path.is_file(M.path.join(path, 'package.json')) then
+      return path
+    end
+  end)
+end
+
+function M.insert_package_json(config_files, field, fname)
+  local path = vim.fn.fnamemodify(fname, ':h')
+  local root_with_package = M.find_package_json_ancestor(path)
+
+  if root_with_package then
+    -- only add package.json if it contains field parameter
+    local path_sep = is_windows and '\\' or '/'
+    for line in io.lines(root_with_package .. path_sep .. 'package.json') do
+      if line:find(field) then
+        config_files[#config_files + 1] = 'package.json'
+        break
+      end
+    end
+  end
+  return config_files
+end
+
+function M.get_active_clients_list_by_ft(filetype)
+  local clients = M.get_lsp_clients()
+  local clients_list = {}
+  for _, client in pairs(clients) do
+    local filetypes = client.config.filetypes or {}
+    for _, ft in pairs(filetypes) do
+      if ft == filetype then
+        table.insert(clients_list, client.name)
+      end
+    end
+  end
+  return clients_list
+end
+
+function M.get_other_matching_providers(filetype)
+  local configs = require 'lspconfig.configs'
+  local active_clients_list = M.get_active_clients_list_by_ft(filetype)
+  local other_matching_configs = {}
+  for _, config in pairs(configs) do
+    if not vim.tbl_contains(active_clients_list, config.name) then
+      local filetypes = config.filetypes or {}
+      for _, ft in pairs(filetypes) do
+        if ft == filetype then
+          table.insert(other_matching_configs, config)
+        end
+      end
+    end
+  end
+  return other_matching_configs
+end
+
+function M.get_config_by_ft(filetype)
+  local configs = require 'lspconfig.configs'
+  local matching_configs = {}
+  for _, config in pairs(configs) do
+    local filetypes = config.filetypes or {}
+    for _, ft in pairs(filetypes) do
+      if ft == filetype then
+        table.insert(matching_configs, config)
+      end
+    end
+  end
+  return matching_configs
+end
+
+function M.get_active_client_by_name(bufnr, servername)
+  --TODO(glepnir): remove this for loop when we want only support 0.10+
+  for _, client in pairs(M.get_lsp_clients { bufnr = bufnr }) do
+    if client.name == servername then
+      return client
+    end
+  end
+end
+
+function M.get_managed_clients()
+  local configs = require 'lspconfig.configs'
+  local clients = {}
+  for _, config in pairs(configs) do
+    if config.manager then
+      vim.list_extend(clients, config.manager:clients())
+    end
+  end
+  return clients
+end
+
+function M.available_servers()
+  local servers = {}
+  local configs = require 'lspconfig.configs'
+  for server, config in pairs(configs) do
+    if config.manager ~= nil then
+      table.insert(servers, server)
+    end
+  end
+  return servers
+end
+
+-- For zipfile: or tarfile: virtual paths, returns the path to the archive.
+-- Other paths are returned unaltered.
+function M.strip_archive_subpath(path)
+  -- Matches regex from zip.vim / tar.vim
+  path = vim.fn.substitute(path, 'zipfile://\\(.\\{-}\\)::[^\\\\].*$', '\\1', '')
+  path = vim.fn.substitute(path, 'tarfile:\\(.\\{-}\\)::.*$', '\\1', '')
+  return path
+end
+
+return M