From 9d76a64745f94870e9783bf78d50938abab56bff Mon Sep 17 00:00:00 2001
From: Tom Willemsen <tom@ryuslash.org>
Date: Thu, 17 May 2012 18:41:04 +0200
Subject: [PATCH] Initial commit

---
 .gitignore          |  1 +
 project-template.el | 77 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 project-template.el

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c531d98
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.elc
diff --git a/project-template.el b/project-template.el
new file mode 100644
index 0000000..db3bb35
--- /dev/null
+++ b/project-template.el
@@ -0,0 +1,77 @@
+(defvar pt-templates-directory "~/.emacs.d/templates"
+  "Where templates are stored.")
+
+(defvar pt-template-var-regexp "__\\([^_ \t\n]+\\)__"
+  "Regexp which identifies a variable in a template.")
+
+(defvar pt-value-alist nil)
+
+(defun pt-replace-all (from to str)
+  (while (string-match from str)
+    (set 'str (replace-match to t t str)))
+  str)
+
+(defun pt-get-replacement (key)
+  (let ((replacement (assoc key pt-value-alist)))
+    (when (eq replacement nil)
+      (set 'replacement
+           `(,key . ,(read-from-minibuffer (concat key ": "))))
+      (add-to-list 'pt-value-alist replacement))
+    replacement))
+
+(defun pt-parse-file-name (filename)
+  (while (string-match pt-template-var-regexp filename)
+    (let* ((tpl-var (match-string 1 filename))
+           (replacement-value (pt-get-replacement tpl-var)))
+      (set 'filename (replace-match (cdr replacement-value) t t
+                                    filename))))
+
+  (let ((noext (file-name-sans-extension filename))
+        (ext (file-name-extension filename t)))
+    (set 'noext (pt-replace-all "\\." "/" noext))
+    (concat noext ext)))
+
+(defun pt-parse-file (file)
+  (insert-file-contents file)
+
+  (while (re-search-forward pt-template-var-regexp nil t)
+    (let* ((tpl-var (match-string 1))
+           (replacement-value (pt-get-replacement tpl-var)))
+      (replace-match (cdr replacement-value) t t))))
+
+(defun pt-parse-and-copy-file (src dst)
+  (let* ((parsed-dst (pt-parse-file-name dst))
+         (parsed-dst-dir (file-name-directory parsed-dst)))
+    (when (not (file-exists-p parsed-dst-dir))
+      (make-directory parsed-dst-dir t))
+
+    (with-temp-file parsed-dst
+        (pt-parse-file src))))
+
+(defun pt-copy-directory (directory to)
+  (let ((files (directory-files directory t "[^.]\\{1,2\\}$" t)))
+    (while files
+      (let* ((src-filename (car files))
+             (dst-filename
+              (concat to "/" (file-name-nondirectory src-filename))))
+        (if (file-directory-p src-filename)
+            (pt-copy-directory src-filename dst-filename)
+          (if (string-equal (file-name-extension src-filename) "etpl")
+              (pt-parse-and-copy-file
+               src-filename (file-name-sans-extension dst-filename))
+            (if (not (file-exists-p to))
+                (make-directory to t)
+              (unless (file-directory-p to)
+                (error
+                 (concat "Cannot create project at %s, file "
+                         "already exists and is not a directory.") to)))
+
+            (copy-file src-filename dst-filename))))
+      (set 'files (cdr files)))))
+
+;;;###autoload
+(defun pt-create-project-from-template (template destination)
+  (interactive "MTemplate: \nGDestination: ")
+  (let ((pt-value-alist))
+    (pt-copy-directory
+     (concat pt-templates-directory "/" template) destination)))