hexing

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Graphical and minimalistic hex editor.

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# hexing
Graphical and minimalistic hex editor. Comes with coloring of magic numbers to
aid in recognizing the type of file you are dealing with.

Build
=====
Prerequisites are `SDL2` and `SDL2_TTF` libraries. To build the app just run:
```
$ make
```
You can optionally run `strip hexing` later to cut some bytes from the final
binary but won't do much difference.

Usage
=====
Mouse interaction is still very limited in purpose and optional.

Keys:
 * `UP/DOWN/PAGEUP/PAGEDOWN`: navigation through the file.
 * `g`: go to file offset. You can press `ENTER` if you don't want to write the
    full offset address.
 * `0-9a-f`: write byte to position in file.
 * `+/-`: add or substract to byte.
 * `x/X`: copy 1 or 4 escaped bytes from file.
 * `n`: write NOP (0x90) to position in file.
 * `ESC/q`: quit the application.

Mouse:
 * Grab the window to drag it anywhere in the screen.
 * Left click will select the byte in content.

Customize
=========
The `theme` structure will let you customize the application by changing the
colors, font (TTF format) and font size. The font lives in `font.h` completely
and can be changed by just modifying the `ttf` and `ttf_len` variables.

TODO
====
 * Append new bytes to files.
 * Magic number with variable offsets (scan).

hexing

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