Fix package dependencies

[memstore.git] / src / compress.lisp

diff --git a/src/compress.lisp b/src/compress.lisp
new file mode 100644 (file)
index 0000000..c3920f7
--- /dev/null
+++ b/src/compress.lisp
@@ -0,0 +1,29 @@
+;; -*- Mode: Common-Lisp -*-
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; FILE IDENTIFICATION
+;;
+;; Name:          compress.lisp
+;; Purpose:       Uses zlib to compress and uncompress vectors of octets
+;; Author:        Kevin Rosenberg
+;; Date Started:  July 2011
+;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(in-package #:memstore)
+
+;; KMR: zlib gives compression errors on random tests:
+;;    indices outside of input array size
+;; Using salza2 as default compressor
+(defun compress (data)
+  (let ((comp (salza2:compress-data
+               data
+               (make-instance 'salza2:zlib-compressor))))
+    (values comp (length comp))))
+
+;; KMR: zlib appears to works fine with salza2 zlib compressor, but
+;; moving to chipz as default decompressor as appears better supported
+;;(defun uncompress-zlib (data)
+;;  (zlib:uncompress data))
+
+(defun uncompress (data)
+  (chipz:decompress nil 'chipz:zlib data))