From 77c7dbaa9ae845b0795f4da33eb0d285f6b9d1c4 Mon Sep 17 00:00:00 2001
From: Tom Willemsen <tom@ryuslash.org>
Date: Mon, 24 Dec 2012 01:27:14 +0100
Subject: [PATCH] Initial commit

---
 Makefile     | 11 +++++++++++
 convert.scm  | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 linkwave.scm | 17 +++++++++++++++++
 paths.scm    | 17 +++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100644 Makefile
 create mode 100644 convert.scm
 create mode 100644 linkwave.scm
 create mode 100644 paths.scm

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c0a9ee8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,11 @@
+.PHONY: all
+
+all: linkwave convert
+linkwave: linkwave.scm paths.o
+	csc $^ -o $@
+
+convert: convert.scm paths.o
+	csc $^ -o $@
+
+paths.o: paths.scm
+	csc -c $^
diff --git a/convert.scm b/convert.scm
new file mode 100644
index 0000000..3e905b5
--- /dev/null
+++ b/convert.scm
@@ -0,0 +1,49 @@
+;;; convert.scm -- Convert the old database into a new one
+(declare (uses paths))
+
+(require-extension sqlite3)
+(require-library srfi-4)
+
+(define (blob->seconds blob)
+  (u32vector-ref (blob->u32vector blob) 0))
+
+(define (convert-table db name converter #!optional select)
+  (let ((count (first-result db (string-append "SELECT COUNT(*) FROM " name)))
+        (progress 0))
+    (for-each-row (lambda args
+                    (apply converter args)
+                    (set! progress (+ progress 1))
+                    (format #t "Converted ~s of ~s ~a rows\r~!" progress count name))
+                  db (or select (string-append "SELECT * FROM " name)))
+    (newline)))
+
+(define (convert)
+  (let ((old-db (open-database (data-file "linkwave.db")))
+        (new-db (open-database (data-file "nlinkwave.db"))))
+    (execute new-db "CREATE TABLE bookmark (url VARCHAR(255) UNIQUE, date INTEGER, name VARCHAR(255), description TEXT)")
+    (execute new-db "CREATE TABLE tag (name VARCHAR(255) UNIQUE)")
+    (execute new-db "CREATE TABLE bookmark_tag (bookmark_id INTEGER REFERENCES bookmark(rowid), tag_id INTEGER REFERENCES tag(rowid), PRIMARY KEY (bookmark_id, tag_id))")
+
+    (convert-table old-db "bookmark"
+                   (lambda (url dateblob name description)
+                     (execute new-db "INSERT INTO bookmark VALUES (?, ?, ?, ?)"
+                              url (blob->seconds dateblob) name description)))
+
+    (convert-table old-db "tag"
+                   (lambda (name)
+                     (execute new-db "INSERT INTO tag VALUES (?)" name)))
+
+    (convert-table old-db "bookmark_tag"
+                   (lambda (url tag)
+                     (execute new-db "INSERT INTO bookmark_tag VALUES (?, ?)"
+                              (first-result new-db "SELECT rowid FROM bookmark WHERE url = ?" url)
+                              (first-result new-db "SELECT rowid FROM tag WHERE name = ?" tag)))
+                   "SELECT url, name FROM bookmark_tag JOIN tag ON (tag_id = tag.rowid)")
+
+    (rename-file (data-file "linkwave.db") (data-file "old-linkwave.db"))
+    (rename-file (data-file "nlinkwave.db") (data-file "linkwave.db"))
+    (format #t "Database converted.~%")))
+
+(if (file-exists? "/home/slash/.local/share/linkwave/nlinkwave.db")
+    (format #t "Converted database already exists.~%")
+    (convert))
diff --git a/linkwave.scm b/linkwave.scm
new file mode 100644
index 0000000..7e26a05
--- /dev/null
+++ b/linkwave.scm
@@ -0,0 +1,17 @@
+(declare (uses paths))
+
+(require-extension sqlite3)
+(require-library posix srfi-4)
+
+(: string-no-null (string -> string))
+(define (string-no-null str)
+  (substring str 0 (- (string-length str) 1)))
+
+(: print-row (string fixnum string string -> void))
+(define (print-row url seconds name description)
+  (format #t "~a~%  ~a~%  ~a~%  ~a~%~%" (string-no-null name) (string-no-null description)
+          (string-no-null url) (seconds->string seconds)))
+
+(define db (open-database (data-file "linkwave.db")))
+(for-each-row print-row db "select * from bookmark")
+(finalize! db #t)
diff --git a/paths.scm b/paths.scm
new file mode 100644
index 0000000..50bd622
--- /dev/null
+++ b/paths.scm
@@ -0,0 +1,17 @@
+;;; paths.scm -- Functions which work with/on paths
+(declare (unit paths))
+
+(define (stored-file xdg-env file)
+  (let ((xdg (get-environment-variable xdg-env))
+        (stored-file (string-append (get-environment-variable "HOME") "/.linkwave/" file)))
+    (unless (or (file-exists? stored-file) (not xdg))
+      (set! stored-file (string-append xdg "/linkwave/" file)))
+    stored-file))
+
+(: config-file (string -> string))
+(define (config-file file)
+  (stored-file "XDG_CONFIG_HOME" file))
+
+(: data-file (string -> string))
+(define (data-file file)
+  (stored-file "XDG_DATA_HOME" file))