jberkenbilt’s gists

jberkenbilt / jq-stream-length.txt

Last active November 6, 2022 14:23

jq command for stream lengths

	qpdf --json-output sample.pdf - \| \
	jq -r '
	.qpdf[1]\|
	to_entries\|
	.[]\|
	select(.value.stream)\|
	(.key + ": " + (.value.stream.data\|@base64d\|length\|tostring))'

jberkenbilt / jq-sample-pdf-stream-length-output.txt

Created November 6, 2022 14:23

Output of getting stream lengths from sample.pdf

jberkenbilt / rotate.py

Created September 26, 2023 13:02

RDS Proxy-aware secret rotation function

	# Based on but significantly customzed from
	# https://github.com/aws-samples/aws-secrets-manager-rotation-lambdas/
	# blob/7de971e35b3770028d04b0fb6c6bd54e4c2551a6/
	# SecretsManagerRDSPostgreSQLRotationMultiUser/lambda_function.py
	# That has this copyright:
	# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
	# SPDX-License-Identifier: MIT-0

	# See https://docs.aws.amazon.com/secretsmanager/
	# latest/userguide/rotate-secrets_how.html

jberkenbilt / pdf-syntax.md

Last active September 2, 2024 14:20

PDF syntax refresher from https://medium.com/@jberkenbilt/text-in-pdf-prerequisites-df3dd3dfa9ea

Type	Description	Example
Null	the null value	`null`
Boolean	true or false	`true`
Number	integer or floating point	`123`, `3.14159`
Text string	delimited by parentheses	`(potato)`
Binary string	hex delimited by angle brackets	`<243f6a8885>`
Name	starts with `/`, used as keys or labels	`/Span`
Array	list of other types in square brakets	`[(One) 2 /Three]`
Dictionary	name/value pairs surrounded by `<<` and `>>`	`< >>`

jberkenbilt / unicode-characters.md

Created September 2, 2024 14:01

Unicode characters for https://medium.com/@jberkenbilt/text-in-pdf-prerequisites-df3dd3dfa9ea

Char	Hex	UTF-8	UTF-16-BE	UTF-16-LE
W	57	57	0057	5700
π	3c0	cf 80	03c0	c003
•	2022	e2 80 a2	2022	2220
🥔	1f954	f0 9f a5 94	d83e dd54	3ed8 54dd

jberkenbilt / pdf-basic-line-1.txt

Created September 2, 2024 17:05

beginning of basic.pdf https://medium.com/@jberkenbilt/text-in-pdf-basic-1ce4cd8564f2

jberkenbilt / pdf-basic-content-stream.txt

Last active September 8, 2024 17:06

basic.pdf content stream for https://medium.com/@jberkenbilt/text-in-pdf-basic-1ce4cd8564f2

	BT
	/F1 14 Tf
	1 0 0 1 72 720 Tm
	(Positioned at 72 720 with Tm and showed with Tj) Tj
	50 -18 Td
	(Down 18, right 50 relative to start of previous line with Td) Tj
	ET
	BT
	1 0 0 1 72 660 Tm
	[(One Two) -1000 (with space after Two using TJ)] TJ

jberkenbilt / advanced-page-dict.txt

Last active September 2, 2024 20:03

page dictionary for https://medium.com/@jberkenbilt/text-in-pdf-advanced-d13e68ba43ea

jberkenbilt / advanced-page-resource-dict.txt

Last active September 2, 2024 20:06

page resource dictionary for https://medium.com/@jberkenbilt/text-in-pdf-advanced-d13e68ba43ea

jberkenbilt / advanced-page-font-dict.txt

Created September 2, 2024 20:05

page font dictionary for https://medium.com/@jberkenbilt/text-in-pdf-advanced-d13e68ba43ea

	qpdf --json-output sample.pdf - \| \
	jq -r '
	.qpdf[1]\|
	to_entries\|
	.[]\|
	select(.value.stream)\|
	(.key + ": " + (.value.stream.data\|@base64d\|length\|tostring))'

Jay Berkenbilt jberkenbilt