mahmoudimus

So you want to modify the text of a PDF by hand...

If you, like me, resent every dollar spent on commercial PDF tools, you might want to know how to change the text content of a PDF without having to pay for Adobe Acrobat or another PDF tool. I didn't see an obvious open-source tool that lets you dig into PDF internals, but I did discover a few useful facts about how PDFs are structured that I think may prove useful to others (or myself) in the future. They are recorded here. They are surely not universally applicable --
the PDF standard is truly Byzantine -- but they worked for my case.

mahmoudimus

#!/usr/bin/python
# -*- coding: utf-8 -*-

"""Script to draw bounding boxes and text from a Tesseract box file.

The script takes an image TIFF_FILE, draws the text and bounding boxes
of the corresponding BOX_FILE and saves the resulting OUT_FILE.

Tesseract box file columns:
<symbol> <left> <bottom> <right> <top> <page>

mahmoudimus

How to apply this patch

On Windows

1. Find out where your WoW directory is installed (i.e. C:\Blizzard\World of Warcraft\).
2. Install Git for Windows.
3. Download [https://gist.githubusercontent.com/mahmoudimus/24c0d7c57abf8118a67b3bf89f1308ba/raw/48cf40254f65d9f9febef4f2f3264b3c438bab27/Utils.lua.patch] to your _retail_/Interface/AddOns/!KalielsTracker folder.
4. Run git apply --whitespace=fix Utils.lua.patch. You can read more about this here: stackoverflow.com/a/40919520/13351

mahmoudimus

(This is a translation of the original article in Japanese by moratorium08.)

(UPDATE (22/3/2019): Added some corrections provided by the original author.)

Writing your own OS to run on a handmade CPU is a pretty ambitious project, but I've managed to get it working pretty well so I'm going to write some notes about how I did it.

mahmoudimus

/opt/jabba/jdk/openjdk@1.17/bin/java -Xms30g -Xmx30g -XX:+UseG1GC -XX:+PrintCodeCache -XX:NonProfiledCodeHeapSize=512m -XX:NonNMethodCodeHeapSize=32m -XX:ReservedCodeCacheSize=2g -XX:InitialCodeCacheSize=512m -XX:CodeCacheExpansionSize=2m -XX:+PrintFlagsFinal

[Global flags]
      int ActiveProcessorCount                     = -1                                        {product} {default}
    uintx AdaptiveSizeDecrementScaleFactor         = 4                                         {product} {default}
    uintx AdaptiveSizeMajorGCDecayTimeScale        = 10                                        {product} {default}
    uintx AdaptiveSizePolicyCollectionCostMargin   = 50                                        {product} {default}
    uintx AdaptiveSizePolicyInitializingSteps      = 20                                        {product} {default}
    uintx AdaptiveSizePolicyOutputInterval         = 0                                         {product} {default}
    uintx AdaptiveSizePolicyWeight                 = 10   

mahmoudimus

#!/usr/bin/env python3

import sys
import struct
import math

# Constants
# Internal (LEB128 buffer)
MAX_ULEB_SIZE = 256 # Maximum proto size here is 2^7^256

mahmoudimus

import idautils
import idc
import ida_bytes
from pprint import pprint, pformat


def demangle_name(name):
    return idc.Demangle(name, idc.GetLongPrm(idc.INF_SHORT_DN)) or name

def get_primary_vtables():

mahmoudimus

/*
[search folders]
folder_1 = 
folder_2 = 

[ignore paths]
C:\Users\documents\scripts\example script name.ahk
C:\Users\documents\scripts\example folder name

[settings]

mahmoudimus

#include <stdio.h>

int main()
{
  #if !defined(__STDC__) || !defined(__STDC_VERSION__)
    puts("This compiler is garbage.");
  #elif (__STDC_VERSION__ >= 201112L)
     #if (__STDC_NO_VLA__==1)
       puts("This compiler is mighty strange but compliant.");
     #else

mahmoudimus

; Autohotkey Capslock Remapping Script 
; - Deactivates capslock for normal (accidental) use.
; - Hold Capslock and drag anywhere in a window to move it (not just the title bar).
; - Access the following functions when pressing Capslock: 
    ;Cursor keys        - h, j, k, l
    ;Home,End           - N, ;
    ;Page up,down       - - =
    ;Esc                - CapsLock only
    ;CapsLock           - Space