davidhcefx davidhcefx

Brainfuck REPL interpreter

Simple Brainfuck REPL interpreter in Python
Here are some sample programs:
- https://en.wikipedia.org/wiki/Brainfuck#Examples

Example

$ ./brainfuck_repl.py

My List of Recommended Sublime Packages

MoveTab

This is a handy plugin that I use in almost every day. Image to rearrange the tabs using the keyboard instead of dragging them with the mouse. By the way, Chrome already support this and the shortcut is Ctrl + Shift + PageUp.

Move By Paragraph

Ctrl + Down is a common shortcut to move cursor to the next paragraph, for example in Microsoft Word and in Google Doc. This plugin provides the shortcut that Sublime lacks out of the box.

Default

This plugin provides all the missing commands in the command palette. For example, I'll like to just type in the Command Palette in order to change Tab Width to X, instead of leaving the keyboard and clicking this and that.

Commands

Basic

git init: build .git folder
git status
git add .: select all files
- --patch: 可以只加部分行數

Commit

git commit: will open CLI text editor

Offline Random Password Generator

There are plenty of ONLINE websites that claimed to be generating your password OFFLINE. This sounds quite absurd to me, as there are no way to tell if they are collecting your data or not, unless you look into their Javascript code or something. At the end of the day, generating one's password using someone else's website just doesn't make sense. Therefore, this code is meant to be run locally and is easy to understand, which is essential to provide confidence that it is safe.

Usage

python3 random_password_generator.py

Nano's Rainbow Color Testing

An overview of 256 color supported by nano config file.

Instruction

Download the following file rainbow.nanorc.
Run nano -f /path/to/this/file /path/to/this/file

Note that for nano with version < 6.0, only 16 colors would be highlighted.

Prettydot - Human readable dot graph language for CFG

Background
Usage
Compilation

Background

[Dot][] is a graph description language in extensions .dot or .gv, and can be read by programs such as Graphviz ([try it online][]). However, it's syntax is too complicated for the goal of generating a simple control-flow graph, and is not very well human readable. Therefore, I defined a new language, prettydot, for this purpose.

	#! /usr/bin/python3
	# SPDX-AI-Disclosure: ai-generated
	# SPDX-AI-Model: claude-haiku-4.5
	# SPDX-AI-Provider: Anthropic
	# SPDX-AI-Scope: Implementation only; human debugged and tested.

	"""
	Merge multiple XML files into one.
	Two nodes are the same if they have the same names and attributes.
	"""