Maxwell's Demon

The Nefastis Machine
2023-10-28 12:37:15 +02:00 · 2023-10-28 12:15:53 +02:00
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 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.org
+++ b/README.org
@ -0,0 +1,108 @@
 # -*- mode: org;  coding: utf-8; -*-
 #+title:
 [[file:logo.png]]
 * Invoice template
 A simple script  for generating pdf invoices from text files.
 The template and workflow is build upon  [[https://amyfare.ca/files/simple_invoice_template.tex][LaTeX Simple Invoice Template]] by Amy Fare (CC BY 4.0) and  [[https://github.com/mrzool/invoice-boilerplate][invoice-boilerplate]] by Mattia Tezzele (GPL2)
 * Requirements
 - an XeLaTeX environment such as [[https://tug.org/texlive/][TeX Live]]or [[https://miktex.org/][MiKTeX]]
 - [[https://pandoc.org/][pandoc]]
 - python or guile (or possibly an other scheme)
 * Instructions for use
 - copy/edit =invoice-example.yaml= (invoice file must end in =.yaml=)
 - generate  pdf via =./generate-invoice.py invoice.yaml=
 * Template variables
 The source file is text in YAML format. The following variables and their values are substituted into the invoice (note that the ’from’ details are hardcoded for now)
 | invoice-number                             |                               |
 | invoice-date                               |                               |
 | invoice-due                                |                               |
 | invoice-to                                 | name of recipient             |
 | address-1, address-2, address-3, address-4 | address can use up to 4 lines |
 | VAT-id                                     |                               |
 invoice lines itemizing products or services can be included as part of a =service= list
 | description | description of the item                  |
 | quantity    |                                          |
 | unit-price  |                                          |
 | vat-rate    |                                          |
 | total       | line total including any VAT & discounts |
 | details     | (not used)                               |
 The subtotal, taxes and invoice total
 | invoice-subtotal |
 | invoice-VAT      |
 | invoice-total    |
 If required, the invoice can include a line about intra-community supply (for 0% VAT between EU entities) by setting =eu-zero= to =true= or =false=
 | inside-eu | (unused)                                    |
 | eu-zero   | will add note about “0% VAT” if set to =true= |
 payment details (only configured for SEPA bank transfers)
 | account-name |
 | IBAN         |
 | BIC          |
 Adjust some of the typography and layout settings
 | seriffont | e.g. Hoefler Text                                 |
 | sansfont  | e.g. Fira Sans                                    |
 | fontsize  | e.g. 10pt                                         |
 | geometry  | e.g. left=43mm, right=43mm, top=51mm, bottom=17mm |
 * Example
 #+BEGIN_SRC yaml
 ---
 invoice-number: 20-A0091
 invoice-date: 2020-11-11
 invoice-due: 2030-11-11
 invoice-to: Erika Mustermann
 address-1: Musterallee 23
 address-2: 54321 Musterstadt
 address-3: Germany
 address-4:
 VAT-id: DE837566332
 # Products & services rendered
 service:
 - description: Miscellaneous aerospace supplies
  quantity:    7
  unit-price:  320.33
  vat-rate:    19
  total:       2668.35
  details:
 - description: Tristero System installation and callibration
  quantity:    1pc
  unit-price:  7120.00
  vat-rate:    19
  total:       8472.80
  details:
 # Invoice totals
 invoice-subtotal: 9362.31
 invoice-VAT:      1778.84
 invoice-total:   11141.15
 # payment details
 account-name: Yoyodyne Inc
 IBAN: EV27183413
 BIC: EVXXX4
 # inside EU and/or 0% VAT rate notice?
 inside-eu: true
 eu-zero:   false
 ---
 #+END_SRC
--- a/generate-invoice.py
+++ b/generate-invoice.py
@ -0,0 +1,50 @@
 #!/usr/bin/env python
 # Creator: nik gaffney <nik@fo.am>
 # Created: 2023-10-23
 # Copyright ©️ 2023 FoAM oü
 # SPDX-License-Identifier: GPL-3.0-or-later
 import sys
 import os
 import shutil
 pandoc = "pandoc"
 template = "invoice-template.tex"
 pdf_engine = "xelatex"
 def check_dependencies():
    def check_cmd(cmd):
        if shutil.which(cmd) is None:
            print(f"error: {cmd} is not installed.\n")
            sys.exit()
    check_cmd(pdf_engine)
    check_cmd(pandoc)
    # etc
 def process_invoice(file):
    output_file = os.path.splitext(file)[0]
    # assemble command
    pandoc_command = (f"{pandoc} {file} -o {output_file}.pdf \
                      --template={template} --pdf-engine={pdf_engine} --quiet")
    # run it...
    status = os.system(pandoc_command)
    if status==0:
        print(f"successfully generated {output_file}")
    else:
        print(f"error generating {output_file}")
 def main():
    check_dependencies()
    if len(sys.argv) == 2:
      input_file = sys.argv[1]
      process_invoice(input_file)
    else:
      print(f"usage: {sys.argv[0]} <filename.yaml>")
      sys.exit()
 if __name__ == "__main__":
    main()
--- a/generate-invoice.scm
+++ b/generate-invoice.scm
@ -0,0 +1,27 @@
 #!/usr/local/bin/guile \
 --no-auto-compile -e main -s
 !#
 ;; Creator: nik gaffney <nik@fo.am>
 ;; Created: 2023-10-23
 ;; Copyright ©️ 2023 FoAM oü
 ;; SPDX-License-Identifier: GPL-3.0-or-later
 (define pandoc "pandoc")
 (define template  "invoice-template.tex")
 (define pdf-engine "xelatex")
 ;; compose & execute suitable pandoc command
 (define (run-pandoc file)
  (let* ((output-file (basename file ".yaml"))
         (status (system
                  (format #f "~a '~a' -o '~a.pdf' --template='~a' --pdf-engine=~a --quiet"
                          pandoc file output-file template pdf-engine))))
    (if (eq? status 0)
        (display (format #f "successfully generated ~a.pdf\n" output-file))
        (display (format #f "error generating ~a.pdf\n" output-file)))))
 (define (main args)
  (if (eq? (length args) 2)
      (run-pandoc (list-ref args 1))
      (display (format #f "usage: ~a <filename.yaml>\n" (car args)))))
--- a/invoice-example.pdf
+++ b/invoice-example.pdf
--- a/invoice-example.yaml
+++ b/invoice-example.yaml
@ -0,0 +1,46 @@
 ---
 invoice-number: 20-A0091
 invoice-date: 2020-11-11
 invoice-due: 2030-11-11
 invoice-to: Erika Mustermann
 address-1: Musterallee 1
 address-2: 12345 Musterstadt
 address-3: Germany
 address-4:
 VAT-id: DE837566332
 # Products & services rendered
 service:
 - description: Miscellaneous aerospace supplies
  quantity:    7
  unit-price:  320.33
  vat-rate:    19
  total:       2,668.35
  details:
 - description: Tristero System installation and callibration
  quantity:    1pc
  unit-price:  7,120.00
  vat-rate:    19
  total:       8,472.80
  details:
 # Invoice totals
 invoice-subtotal: 9,362.31
 invoice-VAT:      1,778.84
 invoice-total:   11,141.15
 # payment details
 account-name: Yoyodyne Inc
 IBAN: EV27183413
 BIC: EVXXX4
 # inside EU and/or 0% VAT rate notice?
 inside-eu: true
 eu-zero:   false
 # Invoice settings
 currency: EUR
 lang: en-GB
 ---
--- a/invoice-template.tex
+++ b/invoice-template.tex
@ -0,0 +1,138 @@
 % !TEX TS-program = xelatex
 % !TEX encoding = UTF-8 Unicode
 %% Creator: nik gaffney <nik@fo.am>
 %% Created: 2023-10-23
 %% Copyright ©️ 2023 FoAM oü
 %% SPDX-License-Identifier: GPL-3.0-or-later
 %% Invoice template based on
 %%  LaTeX Simple Invoice Template by Amy Fare (CC BY 4.0) and
 %%  invoice-boilerplate by Mattia Tezzele (GPL2)
 \documentclass[a4paper]{article}
 \usepackage[utf8]{inputenc}
 \usepackage[colorlinks]{hyperref}
 \usepackage[left=23mm, right=23mm, top=23mm, bottom=17mm]{geometry}
 \usepackage{graphicx}
 \usepackage{tabularx}
 \usepackage{multirow}
 \usepackage{ragged2e}
 \usepackage{array}
 \usepackage{fontspec}
 \usepackage[table]{xcolor}
 \hypersetup{
  urlcolor=blue
 }
 % Font(s)
 \setmainfont[Ligatures={Common, Rare, Discretionary, Required, Contextual},
  BoldFont={Fira Sans Bold},
  ItalicFont={Fira Sans Book Italic}]
            {Fira Sans Book}
 \newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
 \begin{document}
 \thispagestyle{empty}
 \begin{tabularx}{\textwidth}{l X l}
  \hspace{-8pt}
  \multirow{3}{*}  & \hskip12pt\multirow{3}{*} &
  % Invoice no. and Date
  {\begin{tabular}{r l }
      \huge{Invoice No:} & \huge{$invoice-number$} \\
      & \\
      Issue Date: & $invoice-date$ \\
      Due Date:   & $invoice-due$ \\
  \end{tabular}}\hspace{-6pt} \\
 \hspace{-2.1cm}\includegraphics[height=2cm]{logo.png} & \\
  \textbf{Yoyodyne Inc} \\
  VAT ID: AT8375614432 & \\
  &  \\
  1640 Riverside Drive & \\
  Hill Valley, CA & \\
  USA & \\
 \end{tabularx}
 \vspace{0.5 cm}
 %% Recipient
 \begin{tabularx}{\textwidth}{l X  l}
  \hspace{-8pt} \multirow{5}{*} & \hskip12pt\multirow{5}{*} & \hspace{-6pt} \\
  \textbf{$invoice-to$} & \\
  VAT ID: $VAT-id$ & \\
  $if(address-1)$ $address-1$ & \\ $endif$
  $if(address-2)$ $address-2$ & \\ $endif$
  $if(address-3)$ $address-3$ & \\ $endif$
  $if(address-4)$ $address-4$ & \\ $endif$
 \end{tabularx}
 \vspace{0.5 cm}
 %% Table of fees
 \begin{tabularx}{\linewidth}{p{8cm} X X r r}
  \rowcolor[HTML]{dfdfff}
  & & & &\\[0.25ex]
  \rowcolor[HTML]{dfdfff}
           {\bf{Description}} &
           \centering{\bf{Quantity}} &
           \centering{\bf{Unit price}} &
           \centering{\bf{VAT rate}} &
           \bf Net amount\\[2.5ex]
           % sales details
           $for(service)$
           \rowcolor[HTML]{efefff} & & & & \\ \rowcolor[HTML]{efefff}
           % description
           $service.description$ &
           % quantity
           \centering $service.quantity$ &
           % unit price
           \centering $service.unit-price$ &
           % VAT rate
           \centering $service.vat-rate$\% &
           % NET amount
           $service.total$ \texteuro\\[7.5ex]
           % \hline
           $endfor$
           & & & & \\  & & &
           \bf \small{Subtotal} & $invoice-subtotal$ \texteuro\\
           & & & & \\ & & &
           \bf \small{VAT $if(eu-zero)$ 0\%* $endif$} & $invoice-VAT$ \texteuro\\ [2.5ex]
           & &  & \cellcolor[HTML]{dfdfff} & \cellcolor[HTML]{dfdfff} \\ & &  & \cellcolor[HTML]{dfdfff}
           \bf \large{Total} & \cellcolor[HTML]{dfdfff}
           \large{$invoice-total$ \texteuro} \\ [2.2ex]
 \end{tabularx}
 \vfill{}
 \textbf{Payment instructions} \\ [1.2ex]
 \small{Please add the invoice number to your payment description.} \\
 \small{Account holder: $account-name$}
 \small{IBAN: $IBAN$}
 \small{BIC/SWIFT: $BIC$}  \\ [1.2ex]
 $if(eu-zero)$
 % To include if applicable
 \small{*The purchase is liable to Intra-Community supply 0\% Reverse charge.}
 $endif$
 \end{document}
--- a/logo.png
+++ b/logo.png
Author	SHA1	Message	Date
nik gaffney	7247bcfb03	Maxwell's Demon	2023-10-28 12:37:15 +02:00
nik gaffney	8c69f38c25	The Nefastis Machine	2023-10-28 12:15:53 +02:00