A basic version control system written in Haskell based on the Git protocol.

In order to build this project stack must be installed. Once that is done, build and test project:

$ stack setup
$ stack build
$ stack test

After building, use stack exec hagit to run, or copy the generated binary to another directory.

Assuming that the hagit binary is ./hagit:

$ ./hagit <command> [arguments]

During development use:

$ stack exec hagit <command> [arguments]

Valid commands are:

• init: initializes the project directory required to run other hagit commands on it.
• commit: stores all of the project's files in a commit, identified by a unique hash and a message.
• checkout: restores the project directory to the state of the given commit or branch. If supplied with nonexistent branch name - creates new branch. Potentially merges files content.
• log: lists all commits in chronological order with hash, parent's hash, date and message.
• add: adds specified files or directory to staging area.
• remove: removes specified files or directory from staging area.
• branch: lists branches.
• diff: diffs files with versions in staging area; output like UNIX diff.
• status: prints the current commit hash, and lists any new, deleted or modified in working tree, staging area and last commit.
• help: displays help.

Tests can be found in tests folder.

Documentation can be found in docs folder - main page.

• cryptohash: SHA1 hashing for text objects
• bytestring: handling byte strings - needed in compression
• directory, filepath: operations on file system and it's file tree
• containers: Map type for displaying changes in Status command
• time: handling commit's date and time
• conduit: parallel file processing
• strict: strict readFile operation
• Diff: as a base for diff and merge operations

Initially based on hvc by Federico T.

Diff code adapted from Data.Algorithm.DiffOutput module (Sterling Clover 2008-2011, Kevin Charter 2011)