add Lua API to override default settings (#111)

6 files changed, 54 insertions, 30 deletions

diff --git a/lua/nvim-lsp-installer.lua b/lua/nvim-lsp-installer.lua
index 58b909dd..b05ac31c 100644
--- a/lua/nvim-lsp-installer.lua
+++ b/lua/nvim-lsp-installer.lua
@@ -3,9 +3,12 @@ local dispatcher = require "nvim-lsp-installer.dispatcher"
 local process = require "nvim-lsp-installer.process"
 local status_win = require "nvim-lsp-installer.ui.status-win"
 local servers = require "nvim-lsp-installer.servers"
+local settings = require "nvim-lsp-installer.settings"
 
 local M = {}
 
+M.settings = settings.set
+
 function M.display()
     status_win().open()
 end
diff --git a/lua/nvim-lsp-installer/log.lua b/lua/nvim-lsp-installer/log.lua
index 1fa3209e..8aa2e16e 100644
--- a/lua/nvim-lsp-installer/log.lua
+++ b/lua/nvim-lsp-installer/log.lua
@@ -1,3 +1,5 @@
+local settings = require "nvim-lsp-installer.settings"
+
 local config = {
     -- Name of the plugin. Prepended to log messages
     name = "lsp-installer",
@@ -28,9 +30,6 @@ local config = {
 
 local log = {}
 
--- Default log level is warn.
-vim.g.lsp_installer_log_level = vim.g.lsp_installer_log_level or vim.log.levels.WARN
-
 local unpack = unpack or table.unpack
 
 do
@@ -62,7 +61,7 @@ do
 
     local log_at_level = function(level, level_config, message_maker, ...)
         -- Return early if we're below the current_log_level
-        if level < vim.g.lsp_installer_log_level then
+        if level < settings.current.log_level then
             return
         end
         local nameupper = level_config.name:upper()
diff --git a/lua/nvim-lsp-installer/opts.lua b/lua/nvim-lsp-installer/opts.lua
deleted file mode 100644
index 71128808..00000000
--- a/lua/nvim-lsp-installer/opts.lua
+++ /dev/null
@@ -1,16 +0,0 @@
-local M = {}
-
-local function boolean_val(val, default)
-    if type(val) == "nil" then
-        return default
-    elseif type(val) == "number" then
-        return val == 1
-    end
-    return val and true or false
-end
-
-function M.allow_federated_servers()
-    return boolean_val(vim.g.lsp_installer_allow_federated_servers, true)
-end
-
-return M
diff --git a/lua/nvim-lsp-installer/servers/init.lua b/lua/nvim-lsp-installer/servers/init.lua
index 497d5375..f0ed0533 100644
--- a/lua/nvim-lsp-installer/servers/init.lua
+++ b/lua/nvim-lsp-installer/servers/init.lua
@@ -1,17 +1,18 @@
 local Data = require "nvim-lsp-installer.data"
 local path = require "nvim-lsp-installer.path"
 local fs = require "nvim-lsp-installer.fs"
-local opts = require "nvim-lsp-installer.opts"
+local settings = require "nvim-lsp-installer.settings"
 
 local M = {}
 
 local function vscode_langservers_extracted(name)
-    return opts.allow_federated_servers() and "vscode-langservers-extracted" or "vscode-langservers-extracted_" .. name
+    return settings.current.allow_federated_servers and "vscode-langservers-extracted"
+        or "vscode-langservers-extracted_" .. name
 end
 
 -- By default the install dir will be the same as the server's name.
 -- There are two cases when servers should install to a different location:
---  1. federated server installations, (see :help vim.g.lsp_installer_allow_federated_servers)
+--  1. federated server installations, (see :help nvim-lsp-installer-settings)
 --  2. legacy reasons, where some servers were previously installed to a location different than their name
 local INSTALL_DIRS = {
     ["bashls"] = "bash",
diff --git a/lua/nvim-lsp-installer/settings.lua b/lua/nvim-lsp-installer/settings.lua
new file mode 100644
index 00000000..ec7f622b
--- /dev/null
+++ b/lua/nvim-lsp-installer/settings.lua
@@ -0,0 +1,36 @@
+local DEFAULT_SETTINGS = {
+    ui = {
+        icons = {
+            -- The list icon to use for installed servers.
+            server_installed = "◍",
+            -- The list icon to use for servers that are pending installation.
+            server_pending = "◍",
+            -- The list icon to use for servers that are not installed.
+            server_uninstalled = "◍",
+        },
+    },
+
+    -- Controls to which degree logs are written to the log file. For example, it's useful to set this to
+    -- vim.log.levels.TRACE when debugging issues with server installations.
+    log_level = vim.log.levels.WARN,
+
+    -- Whether to allow LSP servers to share the same installation directory.
+    -- For some servers, this effectively causes more than one server to be
+    -- installed (and uninstalled) when executing `:LspInstall` and
+    -- `:LspUninstall`.
+
+    -- For example, installing `cssls` will also install both `jsonls` and `html`
+    -- (and the other ways around), as these all share the same underlying
+    -- package.
+    allow_federated_servers = true,
+}
+
+local M = {}
+
+function M.set(opts)
+    M.current = vim.tbl_deep_extend("force", DEFAULT_SETTINGS, opts)
+end
+
+M.current = DEFAULT_SETTINGS
+
+return M
diff --git a/lua/nvim-lsp-installer/ui/status-win/init.lua b/lua/nvim-lsp-installer/ui/status-win/init.lua
index a8bad050..76569352 100644
--- a/lua/nvim-lsp-installer/ui/status-win/init.lua
+++ b/lua/nvim-lsp-installer/ui/status-win/init.lua
@@ -1,5 +1,6 @@
 local Ui = require "nvim-lsp-installer.ui"
 local fs = require "nvim-lsp-installer.fs"
+local settings = require "nvim-lsp-installer.settings"
 local Log = require "nvim-lsp-installer.log"
 local Data = require "nvim-lsp-installer.data"
 local display = require "nvim-lsp-installer.ui.display"
@@ -23,9 +24,6 @@ local function Header()
     })
 end
 
--- TODO make configurable
-local LIST_ICON = "◍"
-
 local Seconds = {
     DAY = 86400, -- 60 * 60 * 24
     WEEK = 604800, -- 60 * 60 * 24 * 7
@@ -45,7 +43,7 @@ local function get_relative_install_time(time)
     elseif delta < (Seconds.MONTH * 2) then
         return "last month"
     elseif delta < Seconds.YEAR then
-        return ("%d months ago"):format(math.floor((delta / 2419200) + 0.5))
+        return ("%d months ago"):format(math.floor((delta / Seconds.MONTH) + 0.5))
     else
         return "more than a year ago"
     end
@@ -56,7 +54,7 @@ local function InstalledServers(servers)
         return Ui.Node {
             Ui.HlTextNode {
                 {
-                    { LIST_ICON, "LspInstallerGreen" },
+                    { settings.current.ui.icons.server_installed, "LspInstallerGreen" },
                     { " " .. server.name, "Normal" },
                     {
                         (" installed %s"):format(get_relative_install_time(server.creation_time)),
@@ -91,7 +89,10 @@ local function PendingServers(servers)
         return Ui.Node {
             Ui.HlTextNode {
                 {
-                    { LIST_ICON, has_failed and "LspInstallerError" or "LspInstallerOrange" },
+                    {
+                        settings.current.ui.icons.server_pending,
+                        has_failed and "LspInstallerError" or "LspInstallerOrange",
+                    },
                     { " " .. server.name, server.installer.is_running and "Normal" or "LspInstallerGray" },
                     { " " .. note, "Comment" },
                     {
@@ -118,7 +119,7 @@ local function UninstalledServers(servers)
         return Ui.Node {
             Ui.HlTextNode {
                 {
-                    { LIST_ICON, "LspInstallerGray" },
+                    { settings.current.ui.icons.server_uninstalled, "LspInstallerGray" },
                     { " " .. server.name, "Comment" },
                     { server.uninstaller.has_run and " (just uninstalled)" or "", "Comment" },
                 },