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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Find multiple crystal hits
#
# Copyright © 2017-2020 Deutsches Elektronen-Synchrotron DESY,
#                       a research centre of the Helmholtz Association.
#
# Author:
#    2017 Thomas White <taw@physics.org>
#

import sys
from collections import deque

f = open(sys.argv[1], 'r')
n_crystals = 0
crystal = deque()
in_crystal = 0
while True:

    fline = f.readline()
    if not fline:
        break

    fline = fline.rstrip("\r\n")

    if fline.find("Image filename") != -1:
        filename = fline

    if fline.find("Event") != -1:
        event = fline

    if fline.find("End chunk") != -1:
        if n_crystals > 1:
            print("\nFilename: "+filename)
            print("Event: "+event)
            for line in crystal:
                print(line)

    if fline.find("Begin chunk") != -1:
        n_crystals = 0
        filename = ""
        event = ""
        crystal.clear()

    if fline.find("Begin crystal") != -1:
        n_crystals += 1

    if fline.find("Cell param") != -1:
        in_crystal = 1

    if in_crystal:
        crystal.append(fline)

    if fline.find("unique_axis") != -1:
        in_crystal = 0