Make it do something

- Add constant `*version*' which contains the version number of the
  project.

- Change `db-connect' to `check-db'. Update to using sqlite functions
  instead of cl-sql ones.

- Move the bookmark collection loop to `get-bookmarks'.

- When starting up, if the length of args is greater than 1 check if
  the given option is a known "command" and if so, call it with the
  command line arguments (minus the first). Otherwise show all the
  bookmarks.

2 files changed, 46 insertions, 20 deletions

diff --git a/clark.lisp b/clark.lisp
index c233a5a..6b5d0b1 100644
--- a/clark.lisp
+++ b/clark.lisp
@@ -5,14 +5,29 @@
 (defvar *db* nil
   "The database connection.")
 
-(defun db-connect (name)
+(defconstant *version* "0.1.0"
+  "Clark's version.")
+
+(defun check-db (name)
   "Connect to the database, possibly creating it."
   (let ((db-exists (probe-file name)))
-    (connect (list name) :database-type :sqlite3)
+    (setf *db* (connect name))
     (unless db-exists
-      (create-view-from-class 'bookmark)
-      (create-view-from-class 'tag)
-      (create-view-from-class 'bookmark-tag))))
+      (execute-non-query *db* "CREATE TABLE bookmark (url VARCHAR(255) UNIQUE, date INTEGER, name VARCHAR(255), description TEXT)")
+      (execute-non-query *db* "CREATE TABLE tag (name VARCHAR(255) UNIQUE);")
+      (execute-non-query *db* "CREATE TABLE bookmark_tag (bookmark_id INTEGER REFERENCES bookmark(rowid), tag_id INTEGER REFERENCES tag(rowid), PRIMARY KEY (bookmark_id, tag_id))"))))
+
+(defun get-bookmarks ()
+  "Get a list of all bookmarks.
+
+The result contains the url and the name of the bookmark."
+  (let ((statement
+         (prepare-statement *db* "select url, name from bookmark")))
+    (loop
+       while (step-statement statement)
+       collect (list (statement-column-value statement 0)
+                     (statement-column-value statement 1))
+       finally (finalize-statement statement))))
 
 (defun print-bookmark (bm)
   "Print information about bookmark BM.
@@ -21,19 +36,30 @@ BM should be a list containing the url and name of the bookmark."
   (destructuring-bind (url name) bm
     (format t "~A~%~A~%~%" url name)))
 
-(defun get-bookmarks ()
-  "Get a list of all bookmarks.
+(defun make-command-name (base)
+  "Turn BASE into the name of a possible command."
+  (concatenate 'string (string-upcase base) "-COMMAND"))
 
-The result contains the url and the name of the bookmark."
-  (loop
-     with statement = (prepare-statement
-                       *db* "select url, name from bookmark")
-     while (step-statement statement)
-     collect (list (statement-column-value statement 0)
-                   (statement-column-value statement 1))
-     finally (finalize-statement statement)))
-
-(defun clark ()
-  (setf *db* (connect "test.db"))
-  (map nil #'print-bookmark (get-bookmarks))
+(defun help-command (args)
+  "Show a help message."
+  (format t (concatenate
+             'string
+             "Usage: clark [command [options]...]~%"
+             "~%"
+             "Possible commands:~%"
+             "~%"
+             "help     Display this help and exit~%"
+             "version  Output version information and exit~%")))
+
+(defun version-command (args)
+  "Display clark's version number."
+  (format t "clark version ~A~%" *version*))
+
+(defun clark (args)
+  (check-db "test2.db")
+  (if (> (length args) 1)
+      (let* ((cmd-name (make-command-name (cadr args)))
+             (sym (intern cmd-name :org.ryuslash.clark)))
+        (when (fboundp sym) (funcall sym (cdr args))))
+      (map nil #'print-bookmark (get-bookmarks)))
   (disconnect *db*))
diff --git a/make-image.lisp b/make-image.lisp
index 1221037..733cb8c 100644
--- a/make-image.lisp
+++ b/make-image.lisp
@@ -11,6 +11,6 @@
  "clark" :toplevel
  (lambda ()
    (sb-posix:putenv (format nil "SBCL_HOME=~A" #.(sb-ext:posix-getenv "SBCL_HOME")))
-   (org.ryuslash.clark:clark)
+   (org.ryuslash.clark:clark sb-ext:*posix-argv*)
    0)
  :executable t)