#!/usr/bin/env python

# Makes a source map spreadsheet from a CSV header

import csv

import os.path

import sys

sys.path.append(os.path.dirname(__file__)+"/../lib")

import csvs

import opts

def main():

    # Usage

    env_names = []

    def usage_err():

        raise SystemExit('Usage: '+opts.env_usage(env_names)+' '+sys.argv[0]

            +' <header >src_map')

    # Get config from env vars

    datasrc = opts.get_env_var('datasrc', None, env_names)

    if datasrc == None: usage_err()

    # Get col names

    reader, col_names = csvs.reader_and_header(sys.stdin)

    # Write map spreadsheet

    writer = csv.writer(sys.stdout)

    writer.writerow([datasrc])

    for col_name in col_names:

        writer.writerow([col_name])

main()