Redo installation. (#17)

* Redo installation.

Servers which want to be auto installed should specify
skeleton[name].install()
and it will be automatically added to the list of installable servers.

- Add :LspInstall and :LspInstallInfo
- Auto generate docs for servers with .install() available.
- Add util.npm_installer
- Refactor utf8 capabilities common config into a single function
- Add contribution notes.
- Also expose util.base_install_dir for other installers potentially
- Fix tsserver's arguments and add javascript filetypes

1 files changed, 49 insertions, 0 deletions

diff --git a/lua/nvim_lsp/bashls.lua b/lua/nvim_lsp/bashls.lua
new file mode 100644
index 00000000..b2ae5187
--- /dev/null
+++ b/lua/nvim_lsp/bashls.lua
@@ -0,0 +1,49 @@
+local skeleton = require 'nvim_lsp/skeleton'
+local util = require 'nvim_lsp/util'
+local lsp = vim.lsp
+
+local cwd = vim.loop.cwd()
+
+local server_name = "bashls"
+local bin_name = "bash-language-server"
+
+local installer = util.npm_installer {
+  server_name = server_name;
+  packages = { "bash-language-server" };
+  binaries = {bin_name};
+}
+
+skeleton[server_name] = {
+  default_config = {
+    cmd = {"bash-language-server", "start"};
+    filetypes = {"sh"};
+    root_dir = function() return cwd end;
+    log_level = lsp.protocol.MessageType.Warning;
+    settings = {};
+  };
+  on_new_config = function(new_config)
+    local install_info = installer.info()
+    if install_info.is_installed then
+      if type(new_config.cmd) == 'table' then
+        -- Try to preserve any additional args from upstream changes.
+        new_config.cmd[1] = install_info.binaries[bin_name]
+      else
+        new_config.cmd = {install_info.binaries[bin_name]}
+      end
+    end
+  end;
+  -- on_attach = function(client, bufnr) end;
+  docs = {
+    description = [[
+For install instruction visit:
+https://github.com/mads-hartmann/bash-language-server#installation
+]];
+    default_config = {
+      root_dir = "vim's starting directory";
+    };
+  };
+};
+
+skeleton[server_name].install = installer.install
+skeleton[server_name].install_info = installer.info
+-- vim:et ts=2 sw=2