fikr4n’s gists

fikr4n / coldiff.py

Last active June 16, 2021 16:52

Python code to calculate color difference (read http://en.wikipedia.org/wiki/Color_difference for more information and the original formulae/algorithm) and convert RGB color space to Lab

	#!/usr/bin/env python

	from math import sqrt


	def rgb(x):
	"""Convert #[AA]RRGGBB color in integer or string to (r,g,b) tuple

	Alpha (AA) component is simply ignored.

fikr4n / int32.py

Created January 26, 2015 01:59

Convert Python integer to signed 32-bit equivalent

	def int32(x):
	x &= 0xffffffff # Convert to 32-bit
	if bool(x & 0x80000000): # If negative
	return x - 0x100000000
	else:
	return x

fikr4n / usr_share_X11_xkb_rules_evdev.xml

Last active March 31, 2021 04:24

Arab Melayu / Jawi alphabet keyboard layout for X11/xkb

	<!-- Modify /usr/share/X11/xkb/rules/evdev.xml by adding this in <layoutList> -->
	<layoutList>
	...
	<layout>
	<configItem>
	<name>id</name>
	<shortDescription>id</shortDescription>
	<description>Indonesian (Arab Melayu, phonetic)</description>
	<languageList>
	<iso639Id>ind</iso639Id>

fikr4n / tsignconv.py

Last active February 14, 2016 07:15

'Superkill' JVM type signatures to Java types converter

	import re

	p = re.compile(r'(\[*)([ZBCSIJFDV]\|L([^;\s]+);)')
	prims = {'Z': 'boolean', 'B': 'byte', 'C': 'char', 'S': 'short', 'I': 'int', 'J': 'long', 'F': 'float', 'D': 'double', 'V': 'void'}
	def tr(s):
	return [(i.group(3).replace('/', '.') if i.group(3) else prims[i.group(2)]) + ('[]' * len(i.group(1)))
	for i in p.finditer(s)]

fikr4n / pygigtk.py

Last active January 5, 2023 15:48

Interactive Python interpreter to play with GTK+ without blocking the console

	#!/usr/bin/python3
	"""An interactive Python interpreter to play with GTK+ without blocking the console

	Usage:
	./pygigtk.py

	You don't need to call 'Gtk.main' in the console, just start using Gtk, such as
	creating a window and 'show_all' it. Gtk, GObject, etc have been imported.

	Author: fikr4n <github.com/fikr4n>

fikr4n / typeface.py

Last active September 26, 2017 23:03

Translate string in basic latin script to mathematical symbols or add combining character as if the typeface/style is changed/applied

	#!/usr/bin/env python3

	# Raw table source: https://en.wikipedia.org/wiki/Mathematical_Alphanumeric_Symbols
	table = (
	'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz',
	'𝐀𝐁𝐂𝐃𝐄𝐅𝐆𝐇𝐈𝐉𝐊𝐋𝐌𝐍𝐎𝐏𝐐𝐑𝐒𝐓𝐔𝐕𝐖𝐗𝐘𝐙𝐚𝐛𝐜𝐝𝐞𝐟𝐠𝐡𝐢𝐣𝐤𝐥𝐦𝐧𝐨𝐩𝐪𝐫𝐬𝐭𝐮𝐯𝐰𝐱𝐲𝐳',
	'𝐴𝐵𝐶𝐷𝐸𝐹𝐺𝐻𝐼𝐽𝐾𝐿𝑀𝑁𝑂𝑃𝑄𝑅𝑆𝑇𝑈𝑉𝑊𝑋𝑌𝑍𝑎𝑏𝑐𝑑𝑒𝑓𝑔ℎ𝑖𝑗𝑘𝑙𝑚𝑛𝑜𝑝𝑞𝑟𝑠𝑡𝑢𝑣𝑤𝑥𝑦𝑧',
	'𝑨𝑩𝑪𝑫𝑬𝑭𝑮𝑯𝑰𝑱𝑲𝑳𝑴𝑵𝑶𝑷𝑸𝑹𝑺𝑻𝑼𝑽𝑾𝑿𝒀𝒁𝒂𝒃𝒄𝒅𝒆𝒇𝒈𝒉𝒊𝒋𝒌𝒍𝒎𝒏𝒐𝒑𝒒𝒓𝒔𝒕𝒖𝒗𝒘𝒙𝒚𝒛',
	'𝖠𝖡𝖢𝖣𝖤𝖥𝖦𝖧𝖨𝖩𝖪𝖫𝖬𝖭𝖮𝖯𝖰𝖱𝖲𝖳𝖴𝖵𝖶𝖷𝖸𝖹𝖺𝖻𝖼𝖽𝖾𝖿𝗀𝗁𝗂𝗃𝗄𝗅𝗆𝗇𝗈𝗉𝗊𝗋𝗌𝗍𝗎𝗏𝗐𝗑𝗒𝗓',
	'𝗔𝗕𝗖𝗗𝗘𝗙𝗚𝗛𝗜𝗝𝗞𝗟𝗠𝗡𝗢𝗣𝗤𝗥𝗦𝗧𝗨𝗩𝗪𝗫𝗬𝗭𝗮𝗯𝗰𝗱𝗲𝗳𝗴𝗵𝗶𝗷𝗸𝗹𝗺𝗻𝗼𝗽𝗾𝗿𝘀𝘁𝘂𝘃𝘄𝘅𝘆𝘇',

fikr4n / isupertarg.kts

Last active October 13, 2017 03:07

Indirect generic superclass actual type arguments of a Java class (with Kotlin)

	#!/usr/bin/env kotlinc -script
	import java.lang.reflect.*
	import kotlin.reflect.*

	fun targ(c: Class<*>) = c.typeParameters.toList()

	fun satarg(c: Class<*>) = (c.genericSuperclass as? ParameterizedType)?.
	actualTypeArguments?.toList() ?: emptyList()

	fun isatarg(c: Class<>?, ancestor: Class<>, resolvedT: List<Type>): List<Type>? {

fikr4n / coroutine-pool.kts

Last active November 12, 2024 06:21

A quick example of thread pool-like Kotlin coroutine

	import kotlinx.coroutines.experimental.*
	import kotlinx.coroutines.experimental.channels.*

	class FixedPool(val workerCount: Int) {

	val channel = Channel<Task>()
	val jobs = mutableListOf<Job>()

	init {
	start() // start immediately

fikr4n / simple-https-server.py

Created July 20, 2018 03:01 — forked from dergachev/simple-https-server.py

	# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
	# generate server.xml with the following command:
	# openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
	# run as follows:
	# python simple-https-server.py
	# then in your browser, visit:
	# https://localhost:4443

	import BaseHTTPServer, SimpleHTTPServer
	import ssl

fikr4n / colortoalpha.sh

Created February 28, 2019 06:06

Convert color to alpha with ImageMagick

convert input.jpg -fuzz 20% -transparent white output.png

Fikrul Arif fikr4n