A lightweight C++ utility to programmatically generate professional PDF invoices. Built with libharu, this tool is designed to integrate with backend systems (like Odoo or custom time-tracking databases) to automate billing workflows without requiring heavy GUI applications.

• Vector Graphics: Generates high-quality, printable PDFs.
• Lightweight: No Java or Python interpreter overhead; runs instantly as a compiled binary.
• Customizable: Easy to modify C++ structs to accept data from JSON, CSV, or SQL inputs.
• Automated Calculations: Automatically computes line item totals and grand totals to prevent math errors.

• OS: Ubuntu / Debian
• Library: libhpdf (LibHaru)

bash sudo apt update sudo apt install libhpdf-dev

Bash

g++ -std=c++17 invoice_gen.cpp -o invoice_gen -lhpdf

Run the tool to generate a standard invoice in the current directory: Bash

./invoice_gen

Output: invoice.pdf

To adapt this for production:

Modify the InvoiceItem struct in invoice_gen.cpp.

Connect the input vectors to your SQL database or JSON parser.

Update the COMPANY_NAME constants.