def test_hamming_code_with_0_error(self):
for block_length in range(10, 11):
source = FixSource("BCDAABDBDCDBDBDCACDD")
chain = Chain(
source,
Code("00 01 10 11", symbols="ABCD"),
Hamming(block_length),
Channel(0),
verbosity=0,
)
chain.run()
for level in [0, 1]:
init, final = chain.runs[-1].outputs[level]
self.assertEqual(init.message, final.message)
def test_run_can_print(self):
source = FixSource("ALABAMA")
chain = Chain(
source,
Code("00 01 10 11", symbols=source.symbols),
Hamming(4),
Channel("bits=3,11,17,21,21,24,26"),
verbosity=1,
)
chain.print_run()
print()
chain.print_run(with_elements=False)
run = chain.runs[0]
print(run.outputs, run.chain.elements, sep="\n")
def test_hamming_code_can_correct_1_error(self):
'Hamming code could correct 1 error.'
for block_length in range(4, 8):
source = FixSource("ALABAMA")
chain = Chain(
source,
Code("00 01 10 11", symbols=source.symbols),
Hamming(block_length),
Channel(1),
verbosity=1,
)
chain.run()
for level in [0, 1]:
init, final = chain.runs[-1].outputs[level]
self.assertEqual(init.message, final.message)
def test_simple_chain_returns_correct_html(self):
args_list = [
(3, 1, 0, 0),
(2, 1, 0, 0),
(2, 1, 0, 8),
]
for args in args_list:
source_number, code_number, channel_description,\
hamming_block_length = args
response = simple_chain(HttpRequest(), *args)
source_name, source, code_list = sources[source_number]
code = code_list[code_number - 1]
channel = Channel(channel_description)
chain_ = Chain(source, code, channel)
chain_.run()
run = chain_.runs[0]
expected_html = render_to_string(
'sources/chain.html', {
"source":
source,
"source_description":
urlizer.to_url(str(source)),
"code":
str(code),
"channel":
channel,
"channel_description":
channel.description,
"hamming_block_length":
hamming_block_length,
"linearized_outputs":
tools.colorize_and_linearize_outputs(run.outputs),
"fix_source":
get_fix_source(source.symbols, fix_sources)
})
html = response.content.decode()
self.assertEqual(remove_table_data(html),
remove_table_data(expected_html))
self.assertContains(response, "hibament")
self.assertContains(response, "<table")
self.assertContains(response, "<tr><td>")
def test_simple_chain_returns_correct_html(self):
args_list = [
(3, 1, 0, 0),
(2, 1, 0, 0),
(2, 1, 0, 8),
]
for args in args_list:
source_number, code_number, channel_description,\
hamming_block_length = args
response = simple_chain(HttpRequest(), *args)
source_name, source, code_list = sources[source_number]
code = code_list[code_number-1]
channel = Channel(channel_description)
chain_ = Chain(source, code, channel)
chain_.run()
run = chain_.runs[0]
expected_html = render_to_string(
'sources/chain.html',
{
"source": source,
"source_description": urlizer.to_url(str(source)),
"code": str(code),
"channel": channel,
"channel_description":
channel.description,
"hamming_block_length":
hamming_block_length,
"linearized_outputs":
tools.colorize_and_linearize_outputs(run.outputs),
"fix_source":
get_fix_source(source.symbols, fix_sources)
}
)
html = response.content.decode()
self.assertEqual(remove_table_data(html),
remove_table_data(expected_html))
self.assertContains(response, "hibament")
self.assertContains(response, "<table")
self.assertContains(response, "<tr><td>")
#!/usr/bin/env python3
"""Source coding example
You can change the code words, the propabilities of the
symbols, and the errors of the channel.
"""
from __future__ import division
from __future__ import print_function
__author__ = 'Arpad Horvath'
from coding import (Chain, FixSource, Source, Code, Hamming, Channel)
source = Source([1/4, 1/4, 1/4, 1/4], length=10)
#source = Source([1/2, 1/4, 1/8, 1/8], length=10)
#source = FixSource("ALABAMA")
chain = Chain(
source,
Code("1000 0100 0010 0001", symbols=source.symbols),
Channel(0),
verbosity = 0,
)
result = chain.run()
#!/usr/bin/env python3
"""Example using the package.
"""
from __future__ import division
from __future__ import print_function
__author__ = 'Arpad Horvath'
from coding import (Chain, FixSource, Source, Code, Hamming, Channel)
source = FixSource("ALABAMA")
chain = Chain(
source,
Code("00 01 10 11", symbols=source.symbols),
Hamming(4),
Channel(1),
#Channel([24,26]), # with code 00 01 10 11 decode is broken
#Channel(.1),
verbosity = 1,
)
result = chain.print_run()
from django.http import HttpRequest
from django.test import TestCase
from sources.views import (home, source_detail, code_stat, sources,
simple_chain, general_chain, get_fix_source,
fix_sources, urlizer, change_communication_system)
from sources.arithmetic import views
from coding import FixSource, Source, Code, Channel, Chain
import coding
from sources import tools
from collections import OrderedDict
import re
source = Source([.25] * 4)
code = Code("00 01 10 11")
fix_source_chain = Chain(FixSource('ALABAMA'),
tools.get_code('A:0 B:10 L:110 M:111'), Channel([2]))
fix_source_chain.run()
fix_source_run = fix_source_chain.runs[0]
outputs = fix_source_run.outputs
# print(
# outputs,
# [tools.color_diff(*[o.message for o in output]) for output in outputs],
# sep='\n'
# )
def remove_table_data(text):
lines = text.splitlines()
span = re.compile("<td>.*?</td>")
new_text = []
for line in lines:
simple_chain, general_chain, get_fix_source,
fix_sources, urlizer, change_communication_system
)
from sources.arithmetic import views
from coding import FixSource, Source, Code, Channel, Chain
import coding
from sources import tools
from collections import OrderedDict
import re
source = Source([.25]*4)
code = Code("00 01 10 11")
fix_source_chain = Chain(
FixSource('ALABAMA'),
tools.get_code('A:0 B:10 L:110 M:111'),
Channel([2])
)
fix_source_chain.run()
fix_source_run = fix_source_chain.runs[0]
outputs = fix_source_run.outputs
# print(
# outputs,
# [tools.color_diff(*[o.message for o in output]) for output in outputs],
# sep='\n'
# )
def remove_table_data(text):
lines = text.splitlines()
span = re.compile("<td>.*?</td>")
