savasadar’s gists

savasadar / BCAddressField.py

Last active February 20, 2019 14:17

Python code for validating bitcoin address

	#
	# DJango field type for a Bitcoin Address
	#
	import re
	from django import forms
	from django.forms.util import ValidationError
	from Crypto.Hash import SHA256

	class BCAddressField(forms.CharField):
	default_error_messages = {

savasadar / BitcoinAddressValidator

Created November 8, 2017 08:24

Ruby code for validating bitcoin address

	require 'digest'

	class BitcoinAddressValidator < ActiveModel::EachValidator
	def validate(record, field, value)
	unless valid_bitcoin_address?(value)
	record.errors[field] << "Bitcoin address is invalid"
	end
	end

	private

savasadar / BitcoinValidator

Created November 8, 2017 08:28

c# BitcoinValidator


	using System;
	using System.Linq;
	using System.Security.Cryptography;
	using NUnit.Framework;

	namespace BitcoinValidator
	{
	public class ValidateTest
	{

savasadar / GenerateKeys.py

Created November 8, 2017 11:12

The following code produces sample 30-character SHA256-based mini private keys in Python.

	import random
	import hashlib

	BASE58 = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'

	def Candidate():
	"""
	Generate a random, well-formed mini private key.
	"""
	return('%s%s' % ('S', ''.join(

savasadar / CountryListWithNativeLanguages.json

Last active September 8, 2018 14:00

Country List with Native Language Json

savasadar / CountryListWithNativeLanguage.sql

Last active September 8, 2018 14:09

Country List with Native Language Sql Table Create Script

	CREATE TABLE CountryTemp(
	country_code NVARCHAR(4) NOT NULL
	,lang_code NVARCHAR(3) NOT NULL
	,lang_name NVARCHAR(12) NOT NULL
	,country_name NVARCHAR(36) NOT NULL
	,lang_native NVARCHAR(18)
	);
	INSERT INTO CountryTemp(country_code,lang_code,lang_name,country_name,lang_native) VALUES (N'TG',N'ee',N'Ewe',N'Togo',N'Eʋegbe');
	INSERT INTO CountryTemp(country_code,lang_code,lang_name,country_name,lang_native) VALUES (N'KE',N'kam',N'Kamba',N'Kenya',NULL);
	INSERT INTO CountryTemp(country_code,lang_code,lang_name,country_name,lang_native) VALUES (N'HN',N'es',N'Spanish',N'Honduras',N'español');

savasadar / TopmostViewControllerExtension.swift

Created April 16, 2019 12:36

Get the topmost viewController anywhere in the app (typically from the appDelegate). Get the current visible viewController.

	extension UIViewController {
	func topMostViewController() -> UIViewController {

	if let presented = self.presentedViewController {
	return presented.topMostViewController()
	}

	if let navigation = self as? UINavigationController {
	return navigation.visibleViewController?.topMostViewController() ?? navigation
	}

savasadar / App.java

Last active May 17, 2019 13:36

Detect android app foreground and background state with LifecycleObserver

	import android.app.Application;
	import android.util.Log;
	import android.arch.lifecycle.*;

	public class App extends Application implements LifecycleObserver {

	@Override
	public void onCreate() {
	super.onCreate();
	ProcessLifecycleOwner.get().getLifecycle().addObserver(this);

savasadar / GetCurrentForegroundActivity.java

Created May 17, 2019 14:53

Get current foreground activity context in android

	public static Activity getActivity() {
	try {
	Class activityThreadClass = Class.forName("android.app.ActivityThread");
	Object activityThread = activityThreadClass.getMethod("currentActivityThread").invoke(null);
	Field activitiesField = activityThreadClass.getDeclaredField("mActivities");
	activitiesField.setAccessible(true);

	Map<Object, Object> activities = (Map<Object, Object>) activitiesField.get(activityThread);
	if (activities == null)
	return null;

savasadar / turkiye_il_ilce_semt_mahalle.sql

Last active January 21, 2020 13:13

Türkiye İl-İlçe-Semt-Mahalle Listesi MSSQL - 2020

This file has been truncated, but you can view the full file.

	USE [EMLAK_HANEM]
	GO
	/**** Object: Table [dbo].[IL] Script Date: 1/21/2020 4:05:09 PM ****/
	SET ANSI_NULLS ON
	GO
	SET QUOTED_IDENTIFIER ON
	GO
	CREATE TABLE [dbo].[IL](
	[id] [int] IDENTITY(1,1) NOT NULL,
	[adi] [nvarchar](50) NOT NULL,

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