wildbit/archaeologist

Universal access to versioned directories from Clojure

Archaeologist

A Clojure library to help you read versioned directories at a specific moment of time. Used internally in Beanstalk. It works with local Subversion and Git repositories as well as regular unversioned directories. VCS support is provided by SVNKit and JGit.

Installation

Add the following dependency to your project.clj file:

[archaeologist "0.1.1"]

Usage

Require the core and all needed VCS adapters:

(require '[archaeologist.core :refer :all])
(require '[archaeologist.git :as git])
(require '[archaeologist.subversion :as subversion])
(require '[archaeologist.fs :as fs])

Recursively list files for current mainstream version:

(with-repository [repo (git/open-repository "test/fixtures/git")]
  (list-files repo (get-default-version repo)))

; => [{:kind "file", :path "a"} {:kind "file", :path "b"} {:kind "dir", :path "c"} {:kind "file", :path "c/d"} {:kind "file", :path "c/e"} {:kind "dir", :path "c/f"} {:kind "file", :path "c/f/g"}]

Recursively list files in directory:

(with-repository [repo (subversion/open-repository "test/fixtures/svn")]
  (list-files repo (get-default-version repo) "c"))

; => [{:kind "dir", :path "f"} {:kind "file", :path "f/g"} {:kind "file", :path "d"} {:kind "file", :path "e"}]

Read a file:

(with-repository [repo (fs/open-repository "test/fixtures/fs")]
  (read-file repo (get-default-version repo) "c/f/g"))

; => #<byte[] [B@6c017b07>

By composing these simple operations you should be able to work with versioned directory trees as if they were regular directories. Check out the tests for more usage examples.

Running tests locally

Unzip fixtures into test directory:

unzip test/fixtures.zip -d test

License

Copyright © 2014 Wildbit, LLC

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.