TexLive ISO file listing and extraction (Joliet)

texliveiso.py

# the texlive iso urls become unavailable as texlive replaces the releases
# this script also prints dd commands for extracting a file by offset
# docs at https://github.com/clalancette/pycdlib and https://clalancette.github.io/pycdlib/example-extracting-data-from-iso.html
# Usage:
#   wget https://tug.ctan.org/systems/texlive/Images/texlive2024-20240312.iso 
#   python texliveiso.py texlive2024-20240312.iso > texliveiso.txt

import sys, io
import pycdlib

input_path = sys.argv[1]

iso = pycdlib.PyCdlib()
iso.open(input_path)

if iso.has_udf():
    pathname = 'udf_path'
elif iso.has_rock_ridge():
    pathname = 'rr_path'
elif iso.has_joliet():
    pathname = 'joliet_path'
else:
    pathname = 'iso_path'
print(pathname)
    
for child in iso.list_children(joliet_path='/'):
    offset = child.orig_extent_loc * iso.logical_block_size
    fsize =  child.data_length
    fname = child.file_identifier().decode('utf-8')
    print(fname, '\t', f'dd if="{input_path}" of="{fname}" bs=1 count={fsize} skip={offset}')

extracted = io.BytesIO()
iso.get_file_from_iso_fp(extracted, joliet_path='/README')

print(extracted.getvalue().decode('utf-8'))

iso.close()

texliveiso.txt

rr_path
.        dd if=../texlive2024-20240312.iso of=. bs=1 count=2048 skip=3395584
..       dd if=../texlive2024-20240312.iso of=.. bs=1 count=2048 skip=3395584
.mkisofsrc       dd if=../texlive2024-20240312.iso of=.mkisofsrc bs=1 count=91 skip=6023270400
LICENSE.CTAN     dd if=../texlive2024-20240312.iso of=LICENSE.CTAN bs=1 count=2098 skip=5576114176
LICENSE.TL       dd if=../texlive2024-20240312.iso of=LICENSE.TL bs=1 count=5267 skip=5576118272
README   dd if=../texlive2024-20240312.iso of=README bs=1 count=182 skip=5576124416
README.usergroups        dd if=../texlive2024-20240312.iso of=README.usergroups bs=1 count=250 skip=5576126464
archive          dd if=../texlive2024-20240312.iso of=archive bs=1 count=1308672 skip=3397632
autorun.inf      dd if=../texlive2024-20240312.iso of=autorun.inf bs=1 count=40 skip=5574256640
doc.html         dd if=../texlive2024-20240312.iso of=doc.html bs=1 count=1719204 skip=5574258688
index.html       dd if=../texlive2024-20240312.iso of=index.html bs=1 count=1852 skip=5575979008
install-tl       dd if=../texlive2024-20240312.iso of=install-tl bs=1 count=125030 skip=5575981056
install-tl-windows.bat   dd if=../texlive2024-20240312.iso of=install-tl-windows.bat bs=1 count=5083 skip=5576108032
readme-html.dir          dd if=../texlive2024-20240312.iso of=readme-html.dir bs=1 count=2048 skip=4706304
readme-txt.dir   dd if=../texlive2024-20240312.iso of=readme-txt.dir bs=1 count=2048 skip=4708352
release-texlive.txt      dd if=../texlive2024-20240312.iso of=release-texlive.txt bs=1 count=368 skip=5576321024
source   dd if=../texlive2024-20240312.iso of=source bs=1 count=4096 skip=4710400
texlive-doc      dd if=../texlive2024-20240312.iso of=texlive-doc bs=1 count=2048 skip=4724736
tl-tray-menu.exe         dd if=../texlive2024-20240312.iso of=tl-tray-menu.exe bs=1 count=49664 skip=6023219200
tlpkg    dd if=../texlive2024-20240312.iso of=tlpkg bs=1 count=2048 skip=4753408
For the introductory information to TeX Live, see the directories
readme-txt.dir (plain text files) or readme-html.dir/ (HTML files).
The material is available in several languages.