genlib 0.6.1

This is the basic library for embedded project.

History

• V0.6.1
  • modify SLIP decode
  • append HDLC encode/decode
• V0.5.0
  • Improved UDPServer local address allocation method
• V0.3.0
  • wrapper SLIP
  • Supports UDP and multicast
  • Supports ANSI Escape Codes

Install

pip install genlib

ANSI Escape Codes

• Foreground color settings
  • ANSIEC.FG.<BLACK | RED | GREEN | YELLOW | BLUE | MAGENTA | CYAN | WHITE>
  • ANSIEC.FG.<BRIGHT_BLACK | BRIGHT_RED | BRIGHT_GREEN | BRIGHT_YELLOW | BRIGHT_BLUE | BRIGHT_MAGENTA | BRIGHT_CYAN | BRIGHT_WHITE>
  • ANSIEC.FG.rgb(r, g, b)
• Background color settings
  • ANSIEC.BG.<BLACK | RED | GREEN | YELLOW | BLUE | MAGENTA | CYAN | WHITE>
  • ANSIEC.BG.<BRIGHT_BLACK | BRIGHT_RED | BRIGHT_GREEN | BRIGHT_YELLOW | BRIGHT_BLUE | BRIGHT_MAGENTA | BRIGHT_CYAN | BRIGHT_WHITE>
  • ANSIEC.BG.rgb(r, g, b)
• Styles
  • ANSIEC.OP.<RESET | BOLD | UNDER_LINE | REVERSE>
• Screen
  • ANSIEC.OP.<CLEAR | CLEAR_LINE>
• Cursor Navigation
  • ANSIEC.OP.<TOP>
  • ANSIEC.OP.<up(n) | down(n) | right(n) | left(n) | next_line(n) | prev_line(n) | to(row, column)>

from genlib.ansiec import ANSIEC
import time, sys, random

def loading(count):
    all_progress = [0] * count
    sys.stdout.write("\n" * count) 
    colors = [0] * count
    for i in range(count):
        colors[i] = ANSIEC.FG.rgb(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
        
    while any(x < 100 for x in all_progress):
        time.sleep(0.01)
        unfinished = [(i, v) for (i, v) in enumerate(all_progress) if v < 100]
        index, _ = random.choice(unfinished)
        all_progress[index] += 1
        
        sys.stdout.write(ANSIEC.OP.left(27))
        sys.stdout.write(ANSIEC.OP.up(count))
        for i, progress in enumerate(all_progress): 
            sys.stdout.write(colors[i])
            width = progress // 4
            print(f"[{'#'* width}{' ' * (25 - width)}] {ANSIEC.OP.RESET}{width*4}%")
            sys.stdout.write(ANSIEC.OP.RESET)

def main():
    loading(4)

if __name__ == "__main__":
    main()    

Data Boundary

SLIP encode/decode

from genlib import slip

def test_encode_decode(slip):
    data = "0.9992676 0.02764893 0.02612305 0.0"
    packet_send = slip.encode(data)
    print(packet_send)
    packet_recv = slip.decode(packet_send)[0]
    print(packet_recv, packet_recv == data)

def test_stream_decode(slip):
    data = []
    data.append(b'\xc00.9992676 0.02764893 0.02612305 0.0\xc0')
    data.append(b'\xc00.99')
    data.append(b'92676 0.02764893 0.02612305 0.0\xc0')
    data.append(b'\xc00.9992676 ')
    data.append(b'0.02764893 0.02612305 0.0\xc0')
    data.append(b'\xc00.9992676 0.')
    data.append(b'02764893 0.02612305 0.0\xc0')
    data.append(b'\xc00.9992676 0.02764893 0.0')
    data.append(b'2612305 0.0\xc0')
    data.append(b'\xc00.9992676 0.02764893 0.02612305 0.0\xc0')
        
    for d in data:
        for packet in slip.decode(d):
            print(packet)
    
if __name__ == "__main__":
    test_encode_decode()
    test_stream_decode()

HDLC encode/decode

import json
from genlib import hdlc

messages = ("Hello World", [10, 20], [3.14], [1000])

message_1 = json.dumps(messages[0]).encode()
message_2 = json.dumps(messages[1]).encode()
message_3 = json.dumps(messages[2]).encode()
message_4 = json.dumps(messages[3]).encode()

send_frame_1 = hdlc.encode(message_1)
send_frame_2 = hdlc.encode(message_2)
send_frame_3 = hdlc.encode(message_3)
send_frame_4 = hdlc.encode(message_4)

recv_frame_1 = send_frame_1[3:]
recv_frame_2 = send_frame_2 + send_frame_3[:2]
recv_frame_3 = send_frame_3[2:] + send_frame_4

recv_message_1 = hdlc.decode(recv_frame_1)
recv_message_2 = hdlc.decode(recv_frame_2)
recv_message_3 = hdlc.decode(recv_frame_3)

if not recv_message_1:
    print("fail")
else:
    for msg in recv_message_1:
        print(json.loads(msg))
    
if not recv_message_2:
    print("fail")
else:
    for msg in recv_message_2:
        print(json.loads(msg))
    
if not recv_message_3:
    print("fail")
else:
    for msg in recv_message_3:
        print(json.loads(msg))

Multicast

Multicast recv

import copy
from genlib.ansiec import ANSIEC
from genlib.udp import MulticastReceiver
         

MAX_RECV_LINE = 15
recv_data_list = []

def on_async_chatting_recv(receiver, message):
    recv_data_list.append(copy.deepcopy(message))
    if len(recv_data_list) > MAX_RECV_LINE:
        recv_data_list.pop(0)

    for i, data in enumerate(recv_data_list[: min(len(recv_data_list), MAX_RECV_LINE)]):
        print(ANSIEC.OP.to(i+1,1) + ANSIEC.OP.CLEAR_LINE, end='')
        print(ANSIEC.OP.to(i+1,1) + ANSIEC.FG.BRIGHT_YELLOW + f">>> RECEIVE {data.remote}: {data.payload}")
    
    print(ANSIEC.OP.to(MAX_RECV_LINE, 1) + ANSIEC.FG.BRIGHT_BLUE)

def main():
    receiver = MulticastReceiver()
    print(ANSIEC.OP.CLEAR, end='')
    receiver.onRecv(on_async_chatting_recv, unpickling=True)
    receiver.loopStart()
    
    while True:
        try:
            data = input(f"{ANSIEC.OP.to(MAX_RECV_LINE+1, 1) + ANSIEC.FG.BRIGHT_BLUE + ANSIEC.OP.CLEAR_LINE}{receiver.remote}: ")
            if data:
                receiver.sendTo(data) #Multiple unicast
        except KeyboardInterrupt:
            break
    
    receiver.loopStop()

if __name__ == "__main__":
    main()

Multicast send

import copy
from genlib.ansiec import ANSIEC
from genlib.udp import MulticastSender


MAX_RECV_LINE = 15
recv_data_list = []

def on_async_chatting_recv(sender, message): #Multiple Unicast
    recv_data_list.append(copy.deepcopy(message))
    if len(recv_data_list) > MAX_RECV_LINE:
        recv_data_list.pop(0)
    
    for i, data in enumerate(recv_data_list[: min(len(recv_data_list), MAX_RECV_LINE)]):
        print(ANSIEC.OP.to(i+1,1) + ANSIEC.OP.CLEAR_LINE, end='')
        print(ANSIEC.OP.to(i+1,1) + ANSIEC.FG.BRIGHT_RED + f">>> RECEIVE {data.remote}: {data.payload}")
    
    print(ANSIEC.OP.to(MAX_RECV_LINE, 1) + ANSIEC.FG.BRIGHT_BLUE)

def main():
    sender = MulticastSender() 
    print(ANSIEC.OP.CLEAR, end='')
    sender.onRecv(on_async_chatting_recv, unpickling=True)
    sender.loopStart()
    
    print(ANSIEC.OP.CLEAR, end='')

    while True:
        try:
            data = input(f"{ANSIEC.OP.to(MAX_RECV_LINE+1, 1) + ANSIEC.FG.BRIGHT_BLUE + ANSIEC.OP.CLEAR_LINE}{sender.group}: ")
            if data:
                sender.sendTo(data) #Only Multicast
        except KeyboardInterrupt:
            break
    
    sender.loopStop()
    
if __name__ == "__main__":
    main()