From f8725fe18333d96b23e7f1473de991114f8f181a Mon Sep 17 00:00:00 2001
From: Kyle Meyer <kyle@kyleam.com>
Date: Sun, 2 Feb 2014 23:56:15 -0500
Subject: Add function to rename and clean new BibTeX file

---
 bog-tests.el | 43 +++++++++++++++++++++++++++++++++++++++++++
 bog.el       | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)

diff --git a/bog-tests.el b/bog-tests.el
index e7ce2cc..24b5d0d 100644
--- a/bog-tests.el
+++ b/bog-tests.el
@@ -114,3 +114,46 @@
     (org-mode)
     (show-all)
     (should-error (bog-citekey-action nil nil nil))))
+
+
+;;; BibTeX functions
+
+;; `bog-prepare-bib-file'
+
+(ert-deftest bog-prepare-bib-file ()
+  (let ((temp-file (make-temp-file "bog-testing-" nil ".bib"))
+        (citekey "name2010word"))
+    (with-current-buffer (find-file-noselect temp-file)
+      (insert (format "\n@article{%s,\n" citekey)
+              "title = {A title},\n"
+              "author = {Last, First},\n"
+              "journal = {Some journal},\n"
+              "year = 2009,\n"
+              "\n}")
+        (save-buffer))
+    (kill-buffer (get-file-buffer temp-file))
+    (bog-prepare-bib-file temp-file)
+    (should-not (file-exists-p temp-file))
+    (let* ((new-file (expand-file-name (concat citekey ".bib") "/tmp"))
+           (new-buffer (get-file-buffer new-file)))
+      (should-not new-buffer)
+      (delete-file new-file))))
+
+(ert-deftest bog-prepare-bib-file-was-open ()
+  (let ((temp-file (make-temp-file "bog-testing-" nil ".bib"))
+        (citekey "name2010word"))
+    (with-current-buffer (find-file-noselect temp-file)
+      (insert (format "\n@article{%s,\n" citekey)
+              "title = {A title},\n"
+              "author = {Last, First},\n"
+              "journal = {Some journal},\n"
+              "year = 2009,\n"
+              "\n}")
+        (save-buffer))
+    (bog-prepare-bib-file temp-file)
+    (should-not (file-exists-p temp-file))
+    (let* ((new-file (expand-file-name (concat citekey ".bib") "/tmp"))
+           (new-buffer (get-file-buffer new-file)))
+      (should new-buffer)
+      (kill-buffer new-buffer)
+      (delete-file new-file))))
diff --git a/bog.el b/bog.el
index 9e4cea4..7e81885 100644
--- a/bog.el
+++ b/bog.el
@@ -229,6 +229,39 @@ first parent heading that matches `bog-citekey-format'."
       (error "%s does not exist" bib-file))
     (find-file-other-window bib-file)))
 
+;;;###autoload
+(defun bog-rename-and-clean-new-bib-files ()
+  "Prepare new BibTeX files.
+New files are determined as files in `bog-bib-directory' that do
+not have a basename matching `bog-citekey-format'. This is only
+useful if you use the non-standard setup of one entry per BibTeX
+file."
+  (interactive)
+  (let* ((new (--filter (not (string-match bog-citekey-format it))
+                    (bog-bib-citekeys)))
+         (new (--map (concat (expand-file-name it bog-bib-directory) ".bib")
+                     new)))
+    (--each new (bog-prepare-bib-file it t))))
+
+(defun bog-prepare-bib-file (file &optional new-key)
+  (save-excursion
+    (let ((was-open (get-file-buffer file))
+          (buffer (find-file-noselect file)))
+      (with-current-buffer buffer
+        (goto-char (point-min))
+        (bibtex-skip-to-valid-entry)
+        (bibtex-clean-entry new-key)
+        (let* ((citekey (bibtex-key-in-head))
+               (bib-file (concat citekey ".bib")))
+          (when (get-buffer bib-file)
+            (error "Buffer for %s already exists" bib-file))
+          (rename-file file bib-file)
+          (rename-buffer bib-file)
+          (set-visited-file-name bib-file)
+          (save-buffer)))
+      (unless was-open
+        (kill-buffer buffer)))))
+
 (defun bog-citekey-as-bib (citekey)
   (expand-file-name (concat citekey ".bib") bog-bib-directory))
 
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