Clean up init file

- Move most logic from init.el into core/siren-init.el.
- Move siren-modules.el and siren-theme.el into core/ directory.
- Create core/siren-vendor.el to deal with setting up the vendor load
  paths.
- Let core/siren-modules.el and core/siren-theme.el deal with setting
  up their own relevant load paths.

core/siren-init.el

@@ -0,0 +1,57 @@
+;;; siren-init.el --- jimeh's Emacs Siren: Initialize all the things
+
+;;; Commentary:
+
+;; Initialize and start loading Emacs Siren config.
+
+;;; Code:
+
+(message "Siren is powering up... Be patient, Master %s!"
+         (getenv (if (equal system-type 'windows-nt) "USERNAME" "USER")))
+
+;; Check Emacs version.
+(when (version< emacs-version "24.1")
+  (error "Siren requires at least GNU Emacs 24.1, but you're running %s"
+         emacs-version))
+
+;; Setup basic paths.
+(setq siren-core-dir (file-name-directory load-file-name))
+(setq siren-dir (expand-file-name ".." siren-core-dir))
+(add-to-list 'load-path siren-core-dir)
+
+;; Configure savefile-dir
+(setq siren-savefile-dir (expand-file-name "savefile" siren-dir))
+(unless (file-exists-p siren-savefile-dir)
+  (make-directory siren-savefile-dir))
+
+;; Ensure vendor directory load-paths are configured
+(require 'siren-vendor)
+
+;; Core stuff
+(require 'siren-custom)
+(require 'siren-core)
+(require 'siren-packages)
+(require 'siren-env)
+(require 'siren-ui)
+(require 'siren-editor)
+
+;; OSX specific
+(when (eq system-type 'darwin)
+  (require 'siren-osx))
+
+;; Linux specific
+(when (eq system-type 'gnu/linux)
+  (require 'siren-linux))
+
+;; config changes made through the customize UI will be store here
+(setq custom-file (expand-file-name "custom.el" siren-dir))
+(load-file custom-file)
+
+;; The modules
+(require 'siren-modules)
+
+;; The theme
+(require 'siren-theme)
+
+(provide 'siren-init)
+;;; siren-init.el ends here

core/siren-modules.el

@@ -6,6 +6,9 @@
 
 ;;; Code:
 
+(setq siren-modules-dir (expand-file-name "modules" siren-dir))
+(add-to-list 'load-path siren-modules-dir)
+
 ;; Modules
 (require 'siren-aliases)
 (require 'siren-avy)

core/siren-theme.el

@@ -6,6 +6,9 @@
 
 ;;; Code:
 
+(setq siren-themes-dir (expand-file-name "themes" siren-dir))
+(add-to-list 'load-path siren-themes-dir)
+
 (if window-system
   (require 'siren-theme-twilight-anti-bright)
   (require 'siren-theme-tomorrow-night-paradise))

core/siren-vendor.el

@@ -0,0 +1,24 @@
+;;; siren-vendor.el --- jimeh's Emacs Siren: Setup vendor load-paths
+
+;;; Commentary:
+
+;; Setup vendor directory load paths.
+
+;;; Code:
+
+(defun siren-add-subfolders-to-load-path (parent-dir)
+  "Add all level PARENT-DIR subdirs to the `load-path'."
+  (dolist (f (directory-files parent-dir))
+    (let ((name (expand-file-name f parent-dir)))
+      (when (and (file-directory-p name)
+                 (not (string-prefix-p "." f)))
+        (add-to-list 'load-path name)
+        (siren-add-subfolders-to-load-path name)))))
+
+(setq siren-vendor-dir (expand-file-name "vendor" siren-dir))
+
+(add-to-list 'load-path siren-vendor-dir)
+(siren-add-subfolders-to-load-path siren-vendor-dir)
+
+(provide 'siren-vendor)
+;;; siren-vendor.el ends here

init.el

@@ -12,80 +12,9 @@
 ;;
 ;; (package-initialize)
 
-(defvar current-user
-      (getenv (if (equal system-type 'windows-nt) "USERNAME" "USER")))
-
-(message "Siren is powering up... Be patient, Master %s!" current-user)
-
-(when (version< emacs-version "24.1")
-  (error "Siren requires at least GNU Emacs 24.1, but you're running %s"
-         emacs-version))
-
 ;; Always load newest byte code
 (setq load-prefer-newer t)
-
-;; Setup paths
-(defvar siren-dir (file-name-directory load-file-name)
-  "The root dir of the Emacs config.")
-(defvar siren-core-dir (expand-file-name "core" siren-dir)
-  "The home of core stuff.")
-(defvar siren-modules-dir (expand-file-name "modules" siren-dir)
-  "This directory houses all of the modules.")
-(defvar siren-themes-dir (expand-file-name "themes" siren-dir)
-  "This directory houses all of the modules.")
-(defvar siren-savefile-dir (expand-file-name "savefile" siren-dir)
-  "This folder stores all the automatically generated save/history-files.")
-(defvar siren-vendor-dir (expand-file-name "vendor" siren-dir)
-  "This directory houses packages that are not yet available in ELPA (or MELPA).")
-
-(defvar siren-modules-file (expand-file-name "siren-modules.el" siren-dir)
-  "This files contains a list of modules to be loaded.")
-(defvar siren-theme-file (expand-file-name "siren-theme.el" siren-dir)
-  "This files contains a list of modules to be loaded.")
-
-(unless (file-exists-p siren-savefile-dir)
-  (make-directory siren-savefile-dir))
-
-(defun siren-add-subfolders-to-load-path (parent-dir)
- "Add all level PARENT-DIR subdirs to the `load-path'."
- (dolist (f (directory-files parent-dir))
-   (let ((name (expand-file-name f parent-dir)))
-     (when (and (file-directory-p name)
-                (not (string-prefix-p "." f)))
-       (add-to-list 'load-path name)
-       (siren-add-subfolders-to-load-path name)))))
-
-(add-to-list 'load-path siren-core-dir)
-(add-to-list 'load-path siren-modules-dir)
-(add-to-list 'load-path siren-themes-dir)
-(add-to-list 'load-path siren-vendor-dir)
-(siren-add-subfolders-to-load-path siren-vendor-dir)
-
-;; core stuff
-(require 'siren-custom)
-(require 'siren-core)
-(require 'siren-packages)
-(require 'siren-env)
-(require 'siren-ui)
-(require 'siren-editor)
-
-;; osx specific
-(when (eq system-type 'darwin)
-  (require 'siren-osx))
-
-(when (eq system-type 'gnu/linux)
-  (require 'siren-linux))
-
-;; config changes made through the customize UI will be store here
-(setq custom-file (expand-file-name "custom.el" siren-dir))
-(load-file custom-file)
-
-;; the modules
-(if (file-exists-p siren-modules-file)
-    (load siren-modules-file))
-
-;; the theme
-(if (file-exists-p siren-theme-file)
-  (load siren-theme-file))
+(load (expand-file-name "core/siren-init.el"
+                        (file-name-directory load-file-name)))
 
 ;;; init.el ends here