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ik5 / catalog.py
Last active October 30, 2026 19:32
convert many specifications I have to a catalog including grouped by domain
#!/usr/bin/env python3
"""Build a Markdown catalog of the standards / documents in this repository.
python3 -I tools/catalog.py [ROOT] [--out DIR] [--jobs N] [--reanalyze] [--reextract]
python3 -I tools/catalog.py --clean # delete generated Markdown only, keep the Tika cache
catalog/audit.md # what may be missing; review it after each run
python3 -I tools/catalog.py --selftest
Re-runnable. Every file is tracked by SHA-256, so on each run:
* new files (future standards) are extracted and added,
@ik5
ik5 / lpa_regex_parsing.go
Last active February 8, 2026 12:42
LPA (Activation Code) string is the QR code you scan for provision eSIM to your telephone. The following code parse the string to it's elements based on GSMA standard.
package main
// go play with my original code: https://go.dev/play/p/dt8WFHM1E8d
import (
"fmt"
"regexp"
)
var validLPA = []string{
@ik5
ik5 / prefix_function.sql
Created January 6, 2022 07:10
example on how to use postgresql to find the biggest prefix from content at a table
CREATE OR REPLACE FUNCTION public.prefixes(character varying) RETURNS character varying[]
LANGUAGE sql IMMUTABLE
AS $_$
SELECT ARRAY(SELECT substring($1 FROM 1 FOR i)
FROM generate_series(1, GREATEST(length($1))) g(i))::varchar[];
$_$
SELECT MAX(prefix) FROM MY_TABLE WHERE prefix=ANY(content);
@ik5
ik5 / notify_watch.php
Created October 24, 2021 16:52
PECL inotify example for close_write on watch directory
<?php
$fd = inotify_init();
$watch_descriptor = inotify_add_watch($fd, './watch', IN_CLOSE_WRITE);
while (true) {
$events = inotify_read($fd);
foreach ($events as $event) {
@ik5
ik5 / read_stdin.php
Created October 24, 2021 16:40
example on reading from stdin in php
<?php
while (!feof(STDIN)) {
$f = fgets(STDIN);
if ($f) {
echo ">> $f\n";
}
}
@ik5
ik5 / thread_pool.rb
Last active October 10, 2021 06:42
example on how to do threadpool in ruby
require 'thread'
queue = Queue.new
threads = []
1.step(1000) do |i|
queue << i
end
8.times do
@ik5
ik5 / main.go
Last active June 23, 2021 17:19
Example on how to look for the date based on a day of the week
package main
import (
"fmt"
"time"
)
func main() {
t, _ := time.Parse("2006-01-02 15:04", "2021-05-17 10:55")
today := t.Weekday()
@ik5
ik5 / main.go
Created February 7, 2021 14:48
Example for getting machine hostname and all of it's IP numbers based on local devices
package main
import (
"fmt"
"net"
"os"
"strings"
)
// GetMachineInfo return a list of:
@ik5
ik5 / html_dom_example.php
Last active September 9, 2020 06:51
A simple example on reading a PHP <head> tag and print it's content including attributes
<?php
$doc = new DOMDocument();
$doc->loadHTMLFile('test.html', LIBXML_NOWARNING | LIBXML_NOERROR);
$nodes = $doc->getElementsByTagName('head');
if ($nodes->length <= 0) {
die('no head found');
}
@ik5
ik5 / israeli_id.py
Created September 7, 2020 18:26
calc israeli id number for valid last number in python 2
#!/usr/bin/env python2
def validate_id_number(id_num):
anID = id_num.zfill(9)
return sum(
sum(
map(
int, str(int(a)*(i % 2 + 1))
)