Sent files from command line to csv_plotter

csv_sent.py

#! /usr/bin/env python3

# Javascript only allows to fetch files from the local system by drag&drop.
# Here a local server is setup to sent a file from command line to csv_plotter.
# Furthermore, we also need to allow CORS...
# The server closes finally; thus the browser cannot reload the url/file.

# Example
# ./csv_sent <filename>

from http.server import HTTPServer, SimpleHTTPRequestHandler, os, sys
from _thread import start_new_thread
from urllib.parse import quote_plus


class CORSRequestHandler(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header('Access-Control-Allow-Origin', '*')
        SimpleHTTPRequestHandler.end_headers(self)

browser = 'xdg-open'   # or e.g. firefox
filename = 'http://localhost:8000/' + quote_plus(sys.argv[1])
url = 'https://raw.githack.com/mzechmeister/csvplotter/master/csv_plotter.htm'
args = sys.argv[2] if sys.argv[2:] else 'cx=$1&cy=$2'

if __name__ == '__main__':
    start_new_thread(HTTPServer(('', 8000), CORSRequestHandler).serve_forever, (1,))
    os.system(f"{browser} '{url}?url={filename}&{args}' && sleep 6")   # waits a bit to sent the file

This is an addon for https://github.com/mzechmeister/csvplotter.

Installation

git clone https://gist.github.com/8bfec277c385c6d72fbc9c8dcedbb2fd.git csv_sent
cd csv_sent
chmod a+x csv_sent.py
ln -s $PWD/csv_sent.py ~/bin/csv_sent