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BXD: Binary Hex Diff

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BXD: Binary Hex Diff
====================

![BXD](http://chromashift.org/bxd.png)

BXD is a small TUI tool to compare two arbitrarily sized files. It supports
diffing byte insetions, deletions, and changes. It uses block-based diff, so
comparing large files should be very fast.

It was written so that some thing similar to Beyond Compare could be used
via SSH, to fit the author's use case and needs. As such, the code may
be a bit messy, but should mostly be OK.

Features
--------

* Diff arbitrarily differently sized files.
* Block-based diff and display for diffing large files with relatively low
  memory and CPU usage.
* Memory mapped input.
* Seek-to-next-difference.

Usage
-----

Currently, the command like arguments are very simple:

Binary Hex Diff
    Copyright (c) 2016-2019 Derek Buitenhuis.

A tool to compare two arbitrarily sized binary files.

Usage: bxd file1 file2

Keys are:

* `q` to quit.
* `space` / `backspace` to seek to next or previous diff.
* `up`/`down` to scroll up and down.
* `pgup` / `pgdn` to scroll up and down by one full screen.

Current Limitations
-------------------

This tool started life out of need for a quick tool for a hobby project,
and as such, lacks a few features that would be very nice to have.

This list will be updated as limitations are removed.

* There is no seek-to-offset featrue or dialogue yet.
* There may be UI text overlap when using very small terminal sizes.

Building
--------

To build BXD, you need a C99 compiler, a POSIX system, and a copy of
[termbox](https://github.com/nsf/termbox/) in your compiler's include
and library path. Then simply type `make`.

If you wish to build on Windows, you will need MinGW-w64, and a copy
of the [termbox-go C shim](https://github.com/dwbuiten/termbox-go-c)
in the compiler's include and library path. Then type
`make LIBS="-lntdll -lws2_32 -lwinmm"`.

Bugs & Patches
--------------

Please file any bugs or problems on the GitHub Issues page, and send
any new code as a Pull Request. Please try to follow a similar coding
style to the exisiting codebase.

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