sqlls #339

* Add sql-language-server configuration

* reference install bin path from installer

* resolve lint warnings

1 files changed, 57 insertions, 0 deletions

diff --git a/lua/nvim_lsp/sqlls.lua b/lua/nvim_lsp/sqlls.lua
new file mode 100644
index 00000000..a47801b3
--- /dev/null
+++ b/lua/nvim_lsp/sqlls.lua
@@ -0,0 +1,57 @@
+local configs = require 'nvim_lsp/configs'
+local util = require 'nvim_lsp/util'
+
+local server_name = "sqlls"
+local bin_name = "sql-language-server"
+
+local installer = util.npm_installer {
+  server_name = server_name;
+  packages = { "sql-language-server" };
+  binaries = {bin_name};
+}
+
+local root_pattern = util.root_pattern(".sqllsrc.json")
+
+configs[server_name] = {
+  default_config = {
+    filetypes = {"sql", "mysql"};
+    root_dir = function(fname)
+      return root_pattern(fname) or vim.loop.os_homedir()
+    end;
+  };
+  on_new_config = function(config)
+    local install_info = installer.info();
+    local P = util.path.join
+    if install_info.is_installed then
+       local bin_ex = P{install_info.bin_dir, bin_name}
+       config.cmd = {bin_ex, "up", "--method", "stdio"}
+    end
+  end;
+  docs = {
+    package_json = "https://raw.githubusercontent.com/joe-re/sql-language-server/release/package.json";
+    description = [[
+      https://github.com/joe-re/sql-language-server
+
+      `cmd` value is **not set** by default. An installer is provided via this `:LspInstall` that uses the
+       nvm_lsp node_modules directory to find the executable. The `cmd` value can be overriden in `setup`;
+
+      ```lua
+      require'nvim_lsp'.sqlls.setup{
+        cmd = {"path/to/command", "up", "--method", "stdio"};
+        ...
+      }
+      ```
+
+      Find further instructions on manual installation of the sql-language-server lsp at [joe-re/sql-language-server](https://github.com/joe-re/sql-language-server).
+
+      `sql-language-server` can be installed via `:LspInstall sqlls` or by yourself with `npm`:
+      ```sh
+      npm install -g sql-language-server
+      ```
+    ]];
+  };
+}
+
+configs[server_name].install = installer.install
+configs[server_name].install_info = installer.info
+-- vim:et ts=2 sw=2