asakasinsky

/*
 * To compile objective-c on the command line:
 *
 * gcc -framework Foundation objc-gcc.m
 *
 * You may have to link with -lobjc or other libs,
 * as required.
 */

#import <Foundation/Foundation.h>

asakasinsky

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

asakasinsky

BNF Grammars

I'm using this gist to collect a bunch of BNF grammars I've written, extracted, or found across the web. All of them are representations of existing languages. I found them useful, someone else might as well

Languages:

C c-grammar.bnf - An incomplete representation of the C language in BNF (from 1988, all newer versions I could find were EBNF or PEG. Let me know if you have a better one.)

Adapted from The C Programming Language, 2nd edition, by Brian W. Kernighan and Dennis M. Ritchie,Prentice Hall, 1988.

asakasinsky

(ns git-example
  (:require [clojure.java.shell :as shell]
            [clojure.string :as string]))

(defn run-command [command & {:keys [directory] :or {directory (System/getProperty "user.dir")}}]
  (shell/with-sh-dir directory
    (shell/sh "sh" "-c" command)))

(defn resolve-command [command & [args]]
  (reduce

asakasinsky

(ns se.raek.rhea.auth
  (:use [ring.util.codec :only (base64-decode)]))

(defn parse-credentials
  "Extracts the user name and password from a HTTP Basic Authentication header
   value and returns them in a vector.
   
   Example:
     (parse-credentials \"Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==\")
     => [\"Aladdin\" \"open sesame\"]"

asakasinsky

# Copy the following and place it a file called Leiningen.sublime-build in the Sublime user packages folder (~/.config/sublime-text-2/Packages/User on Linux).
# Select this as the build system for the project using Tools/Build System/Leiningen.
# You can then bring up the Sublime Command Palette (ctrl+shift+P on Windows/Linux) and issue any of the commands # (build, documentation, clean, run, test, etc). By default, build is bound to ctrl+b and run to ctrl+shift+b.


{
  "cmd": ["lein", "compile", ":all"],
  "working_dir": "$project_path",
  "variants": [
    { "cmd": ["lein", "marg", "-m", "-d", "docs"],

asakasinsky

#!/bin/sh

sudo apt-get update && sudo apt-get upgrade
openssl version -a

#Install the necessary packages for compiling
sudo apt install build-essential checkinstall zlib1g-dev -y

#Download OpenSSL
cd /usr/local/src/

asakasinsky

# Sources used in figuring this out:
#
# - https://developer.mozilla.org/en-US/docs/WebAssembly/C_to_wasm
# - https://emscripten.org/docs/compiling/Building-Projects.html#building-projects

# Set up Emscripten SDK
git clone https://github.com/emscripten-core/emsdk.git
cd emsdk/
./emsdk install latest
./emsdk activate latest

asakasinsky

defmodule Id3Parser do
  @id3_tag_size 128

  def parse(file_name) do
    case File.read(file_name) do
      {:ok, mp3} ->

        # mp3 size minus 128 bytes where id3 tag is located
        mp3_byte_size = byte_size(mp3) - @id3_tag_size

asakasinsky

#!/usr/bin/env bash
# to enable all branches, remove .gitlab-ci only:[/pr-*/] tags
shared=/srv
[ ! -e /etc/os-release ] && shared=/Users/Shared && echo "Not a Linux system.. srv=$shared"
shared_tags='light, docker, c3.small.x86'
PROJECT_REGISTRATION_TOKEN=''
[ "$#" -gt 0 ] && PROJECT_REGISTRATION_TOKEN=$1
printf "token PROJECT_REGISTRATION_TOKEN=%s\n" "${PROJECT_REGISTRATION_TOKEN}"
gitlab=$(docker ps -q -a -f "name=gitlab-runner")
[ "$gitlab" != "" ] && docker stop $gitlab && docker rm -f $gitlab