ArthurN’s gists

ArthurN / gist:e980d723a6d63e9fc766

Created November 22, 2014 01:21

pdf-reader-get-fields.rb

	def get_fields
	# We have to use #send because AFAIK, PDF::Reader does not expose the root object anywhere
	acroform = @reader.send(:root)[:AcroForm]

	# PDF::Reader encapsulates each piece of PDF data in #objects. The field_refs are really references to
	# these objects. We iterate through and de-reference the actual object, creating a AcroField based on its
	# data
	field_refs = @reader.objects[acroform][:Fields] unless acroform.nil?
	fields = field_refs.map do \|field_ref\|
	AcroField.new(@reader.objects[field_ref])

ArthurN / gist:f16ad0e6958a0af73d39

Created November 10, 2014 21:08

AWS permissions

	# From http://breakthebit.org/post/77505127462/up-your-security-on-amazon-aws
	{
	"Statement": [
	{
	"Sid": "AllowPublicRead",
	"Action": [
	"s3:ListBucket",
	"s3:GetObject",
	"s3:PutObject",
	"s3:PutObjectAcl",

ArthurN / gist:e13637dce27d15168d4b

Last active August 29, 2015 14:07

pcos-test.sh

	# Extract PDF field names and positions using pCOS:
	./pcos --extended field "FT fullname Rect[0] Rect[1] Rect[2] Rect[3]" fw9.pdf

	# CSV format, also output pagesize as the first line:
	./pcos --extended pagesize "width height" --extended field "FT fullname V Rect[0] Rect[1] Rect[2] Rect[3]" --format "(VAL,)\n" --replace missing "" test.pdf

ArthurN / i18n.t

Created August 26, 2014 22:48

Peak into what I18n namespaces are attempted by third party gems

	# This monkeypatch logs any calls to I18n#t. This is especially useful to "peaking" into what namespaces are expected
	# for third party gems, e.g. simple_form or reform.
	I18n.module_eval do
	class << self
	def translate_with_puts(*args)
	Rails.logger.debug "#{args}"
	old_translate(*args)
	end
	alias :old_translate :translate
	alias :translate :translate_with_puts

ArthurN / gist:6ac227eb21e6f0627f18

Created May 29, 2014 23:02

Getting Source of a Package on CentOS, Applying Patch, & Rebuilding

	# http://blog.foppiano.org/2007/12/11/installing-source-package-with-yum/
	# http://wiki.centos.org/HowTos/RebuildSRPM

	cd /tmp
	sudo yumdownloader --source zbar
	sudo yum-builddep zbar-blah-blah.rpm

	rpm -ivh packagename-version.src.rpm
	cd ~/rpmbuild
	copy patch to SOURCES

ArthurN / gist:9339253

Created March 4, 2014 02:33

	Stacktrace (most recent call first):

	premailer/rails/css_loaders/network_loader.rb:17:in `uri_for_url'
	::Rails.configuration.action_controller.asset_host.split(%r{:?//})
	premailer/rails/css_loaders/network_loader.rb:8:in `load'
	uri = uri_for_url(url)
	premailer/rails/css_helper.rb:33:in `block in load_css'
	css = strategy.load(url)
	premailer/rails/css_helper.rb:32:in `each'
	STRATEGIES.each do \|strategy\|

ArthurN / init-d.redis

Last active August 29, 2015 13:56

	#!/bin/sh
	# http://vm-192-168-11-21.shengyun.grandcloud.cn/topics/2437
	# redis - this script starts and stops the redis-server daemon
	#
	# chkconfig: 2345 90 10
	# description: Redis is a persistent key-value database
	# processname: redis-server
	# config: /etc/redis.conf
	# config: /etc/sysconfig/redis
	# pidfile: /var/run/redis.pid

ArthurN / pdf.js.google.closure.sh

Created February 2, 2014 03:06

Compile pdf.js using Google Closure API

	curl -v -d code_url=http://mozilla.github.io/pdf.js/build/pdf.js -d compilation_level=SIMPLE_OPTIMIZATIONS -d output_info=errors -d output_format=text -d language=ECMASCRIPT5 http://closure-compiler.appspot.com/compile
	curl -v -d code_url=http://mozilla.github.io/pdf.js/build/pdf.js -d compilation_level=SIMPLE_OPTIMIZATIONS -d output_info=compiled_code -d output_format=text -d language=ECMASCRIPT5 http://closure-compiler.appspot.com/compile > pdf.min.js
	curl -v -d code_url=http://mozilla.github.io/pdf.js/build/pdf.worker.js -d compilation_level=SIMPLE_OPTIMIZATIONS -d output_info=compiled_code -d output_format=text -d language=ECMASCRIPT5 http://closure-compiler.appspot.com/compile > pdf.worker.min.js
	curl -v -d code_url=http://mozilla.github.io/pdf.js/web/viewer.js -d compilation_level=SIMPLE_OPTIMIZATIONS -d output_info=compiled_code -d output_format=text -d language=ECMASCRIPT5 http://closure-compiler.appspot.com/compile > viewer.min.js
	curl -v -d code_url=http://mozilla.github.io/pdf.js/web/l10n.js -d com

ArthurN / i18n.rb

Created December 2, 2013 01:07

Monkey-patch Rails I18n.translate to see what keys ActiveModel is trying to use.

	#initializers/i18n.rb
	I18n.module_eval do
	class << self
	def translate_with_puts(*args)
	Rails.logger.debug "#{args}"
	old_translate(*args)
	end
	alias :old_translate :translate
	alias :translate :translate_with_puts
	end

ArthurN / email.html

Created September 27, 2012 18:24

fatstax email templates

	<html>
	<head>
	<meta name="format-detection" content="telephone=no" />
	<style>
	h1 {
	font-size:14pt;
	}

	h2 {
	font-size:12pt;

Arthur Nisnevich ArthurN