#!/usr/bin/env python3
#
# MiRCARTReduce.py -- efficiently encode mIRC art {from,to} file
# Copyright (c) 2018 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
# This project is licensed under the terms of the MIT licence.
#

from MiRCARTCanvasImportStore import MiRCARTCanvasImportStore
import sys

def reduce(inPathName):
    canvasStore = MiRCARTCanvasImportStore(inPathName)
    inMap = canvasStore.outMap.copy(); del canvasStore;
    with open(inPathName, "w+") as outFile:
        for inCurRow in range(len(inMap)):
            lastAttribs = MiRCARTCanvasImportStore._CellState.CS_NONE
            lastColours = None
            for inCurCol in range(len(inMap[inCurRow])):
                inCurCell = inMap[inCurRow][inCurCol]
                if lastAttribs != inCurCell[2]:
                    if inCurCell[2] & MiRCARTCanvasImportStore._CellState.CS_BOLD:
                        print("\u0002", end="", file=outFile)
                    if inCurCell[2] & MiRCARTCanvasImportStore._CellState.CS_UNDERLINE:
                        print("\u001f", end="", file=outFile)
                    lastAttribs = inCurCell[2]
                if lastColours == None                  \
                or (lastColours[0] != inCurCell[:2][0]  \
                and lastColours[1] != inCurCell[:2][1]):
                    print("\u0003{:d},{:d}{}".format(*inCurCell[:2], inCurCell[3]), end="", file=outFile)
                    lastColours = inCurCell[:2]
                elif lastColours[1] == inCurCell[:2][1] \
                and  lastColours[0] != inCurCell[:2][0]:
                    print("\u0003{:d}{}".format(inCurCell[:2][0], inCurCell[3]), end="", file=outFile)
                    lastColours[0] = inCurCell[:2][0]
                else:
                    print(inCurCell[3], end="", file=outFile)
            print("\n", end="", file=outFile)

#
# Entry point
def main(*argv):
    reduce(argv[1])
if __name__ == "__main__":
    if (len(sys.argv) - 1) != 1:
        print("usage: {} <MiRCART input file pathname>".format(sys.argv[0]), file=sys.stderr)
    else:
        main(*sys.argv)

# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120