francescomecca.eu/output/blog/2018/15/11/programming-session/index.md
2019-05-18 23:13:24 +02:00

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<!--
.. title: Experiment part 1
.. slug: programming-session
.. date: 2018-11-15
.. tags: programming,dlang,web
.. category: PesceWanda
.. link:
.. description:
.. type: text
-->
This is an experimental blogpost with the goal of improving myself on the design of system programs.
The following words are a flow that tries to recapture the process that I follow when I program.
# 17.11
This is the [tracklist](https://www.discogs.com/Various-Psychedelic-Underground-13/release/1251814):
Tracklist
1 Waniyetula - Lindis Farne
2 Missus Beastly - Steel's Electric
3 Vikings Invasion - Shadow Boogie
4 Live - Fly Like A Bird
5 Arktis - Speed Boogie
6 Level π - Hubble's Dream - Dream Without End
7 Emma Myldenberger - RAA
8 Skyline - Beautiful Lady
9 Guru Guru - Oxymoron
# The problem
Yesterday I got an insider tip that probably http://isole.ecn.org/ might be taken down and I remembered that I had an old archive of the entire site.
Actually I am an amateur data hoarder so I keep archives/backups of pretty much everything I find amusing.
I wanted to update the archive so I used httrack.
I found the following problems:
1. too slow (doesn't even use 1/20 of my connection)
2. doesn't understand that if I want to mirror ecn.org I may want isole.ecn.org as well
3. if I configure httrack to archive everything basically I hit some external websites (like google.com) and it starts archiving that as well
4. I can't configure it to avoid any external link because I may need them
A perfect scraper for me would:
1. record a list of every external website it hit so that later I can archive them as well
2. allow me to scrape subdomains as well
3. configure a level of archiving for external websites
# The approach
Right now httrack does a perfect job of storing the webpages with a coherent folder layout and offline browsing capabilities.
Let's see how it does that.
On the original page I can found:
`<link rel='stylesheet' id='avia-google-webfont' href='//fonts.googleapis.com/css?family=Lato:300,400,700' type='text/css' media='all'/> `
When httrack saves it:
`<link rel='stylesheet' id='avia-google-webfont' href='../fonts.googleapis.com/css8f84.css?family=Lato:300,400,700' type='text/css' media='all'/> `