Downloading everything without RSS and how big is it anyway?

**dgl** · March 29, 2023, 19:46

So I'm using transmission, which doesn't directly support RSS. I also wanted to know the size of some of the torrents before download, to plan where to store stuff.

I present two hacky scripts:

mirror.sh:

Code:

#!/bin/bash
# Infocon mirror, torrent files only. Excludes some content, adjust below.
# By dgl, https://dgl.cx/0bsd
# SPDX-License-Identifier: 0BSD
set -exu

BASE='https://infocon.org/'

# Using --timestamping doesn't work, as the index pages don't have Last-Modified.
wget \
  --unlink \
  --force-directories \
  --no-host-directories \
  ${BASE}{cons,documentaries,podcasts,skills}/ # Adjust here.

# Extract just the torrent links. (Yuck, but we can't make wget do it.)
perl -nle'
  my $dir = $ARGV =~ s{(?:^|/)([^/]+)/index.html}{$1}r;
  print "'$BASE'$dir/$1" if m{href="([^/].*?\.torrent)"}i
' */index.html > dl

# The files have Last-Modified so we can use --timestamping now.
wget -idl --force-directories --no-host-directories --timestamping

rm dl */index.html

torrentsize:

Code:

#!/usr/bin/env perl
# By dgl, https://dgl.cx/0bsd
# SPDX-License-Identifier: 0BSD

if (!@ARGV) {
  die "Usage: $0 v1.torrents...\n";
}

my %size_map = (
  K => 1<<10,
  M => 1<<20,
  G => 1<<30,
  T => 1<<40,
);

my $total = 0;

for my $file (@ARGV) {
  open my $fh, "-|", "transmission-show", $file or die $!;
  my $out = join "", <$fh>;
  if ($out =~ /Total Size:\s+([\d.]+) (\w)/) {
    my $size = $1;
    my $mod = $2;
    $total += $size * $size_map{$mod};
  } else {
    warn "No size found for $file\n";
  }
}

if (-t STDOUT) {
  for (sort { $size_map{$b} <=> $size_map{$a} } keys %size_map) {
    if ($total > $size_map{$_}) {
      printf "%.02f %sB\n", $total/$size_map{$_}, $_;
      last;
    }
  }
} else {
  print "$total\n";
}

This lets you download all the torrent files and then answer questions like, how big would it be to download all of cons/?

Code:

$ ./torrentsize cons/*v1\ *
4.99 TB

(Transmission doesn't support v2 torrents so hence just looking at the v1 ones.)

Actually downloading is an exercise for the reader, but with transmission-daemon I do something like:

Code:

cd cons
transmission-remote -a --no-trash-torrent some-v1.torrent -w "$(pwd)"

Yeah, it would probably be easier to just use transmission-rss but maybe this is useful if someone wants the directories that don't have RSS feeds or something.