sheets — A high-performance C-backed CSV engine for Lua

Hello Lua community,

I'm excited to share Sheets, a high-performance CSV library for Lua built 
with the goal of bringing modern, production-grade data tooling to the Lua 
ecosystem.

Lua is one of the most elegant languages I've worked with: minimal, fast, 
embeddable, and extremely flexible. However, I have often felt that the 
ecosystem lacks robust tooling in areas like data processing, analytics, 
and modern developer workflows.

Sheets is my first step toward helping improve that.

Unlike pure-Lua CSV parsers, Sheets uses a hybrid architecture:
- C backend powered by libcsv for fast parsing and writing
- Clean Lua API inspired by Python's csv module
- Cross-platform support via LuaRocks

==================================================
KEY FEATURES
==================================================

- High-performance CSV parsing using libcsv
- Python-style API:
    * reader
    * writer
    * DictReader
    * DictWriter

- CSV dialect support:
    * Excel
    * Excel-Tab
    * Unix
    * Custom dialects

- CSV Sniffer (delimiter detection)

- Utility functions:
    * read_csv
    * write_csv
    * parse
    * filter
    * sort
    * group_by
    * transpose
    * column extraction

- Cross-platform support

==================================================
COMPARISON WITH PYTHON CSV MODULE
==================================================

Python:

    import csv

    with open("data.csv") as f:
        reader = csv.reader(f)
        for row in reader:
            print(row)

Lua (Sheets):

    local sheets = require("sheets")

    local f = io.open("data.csv")
    for row in sheets.reader(f) do
        print(row[1], row[2])
    end
    f:close()

Dict-based reading:

    for rec in sheets.DictReader(io.open("data.csv")) do
        print(rec.name, rec.age)
    end

==================================================
INSTALLATION
==================================================

    luarocks install sheets

==================================================
PROJECT LINKS
==================================================

GitHub Repository:
https://github.com/NNEngine/sheets

LuaRocks Package:
https://luarocks.org/modules/nnengine/sheets

Documentation Website:
https://nnengine.github.io/sheets/

==================================================
TESTED ON
==================================================

- Windows
- Linux (WSL / native)
- Termux (Android)

==================================================
VISION
==================================================

This is only the beginning.

My broader goal is to help build serious tooling for Lua in areas such as:
- data processing
- analytics
- numerical computing
- machine learning infrastructure

I believe Lua has tremendous potential beyond scripting and embedding, and 
I hope projects like this can help strengthen the ecosystem.

I would greatly appreciate feedback, suggestions, bug reports, or 
contributions from the community.

Thank you.

Best regards,
Shivam Sharma

GitHub:
https://github.com/NNEngine

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