Convert brew-aspell-dictionaries to Ruby and output resources

This makes the script much more readable, and also allows us to download
the language packs into the cache where they can be used when installing
aspell.

Library/Contributions/cmd/brew-aspell-dictionaries

@@ -1,53 +0,0 @@
-#!/bin/sh
-#
-# brew-aspell-dictionaries - update aspell formula to include latest dictionaries
-# This script fetches the current index for the aspell dictionaries gnu server,
-# it parses the html to retrieve the URL to the dictionary archive for each
-# available language.
-# The script then calculates the sha1 for each dictionary archive and
-# generates a brew formula for each language.
-# The result can then to be merged into the aspell formula, to update
-# the available dictionary formulae.
-
-dictionaries_url=http://ftpmirror.gnu.org/aspell/dict
-dictionaries_mirror=http://ftp.gnu.org/gnu/aspell/dict
-tmp_file=`mktemp -t brew_aspell_dictionaries`
-brew_formulae_tmp_file=`mktemp -t brew_aspell_dictionaries_formulae`
-
-echo "Downloading aspell dictionaries Index"
-curl -sL ${dictionaries_url}/0index.html \
-       | egrep '^(<tr><td><a|</table)' \
-       | cut -d\" -f2,4 \
-       > $tmp_file
-
-echo "# BEGIN generated with `basename $0`" > $brew_formulae_tmp_file
-langs=""
-for dict in `cat $tmp_file`; do
-  [ "${dict}" = "</table>" ] && break # only read the entries in the first table, which lists the dictionaries for aspell 0.60
-  lang=`echo $dict | awk -F\" '{ gsub("-", "_", $1); print $1 }'`
-  url="${dictionaries_url}/"`echo $dict | awk -F\" '{ print $2 }'`
-  mirror="${dictionaries_mirror}/"`echo $dict | awk -F\" '{ print $2 }'`
-  langs="${langs} ${lang}"
-  echo "Calculating sha1 for formula: ${lang}"
-  sha1=`curl -sL "${url}" | shasum | awk '{print $1}'`
-  cat <<EOF >> $brew_formulae_tmp_file
-class Aspell_${lang} < AspellLang
-  url '${url}'
-  mirror '${mirror}'
-  sha1 '${sha1}'
-end
-EOF
-done
-
-cat <<EOF >> $brew_formulae_tmp_file
-class Aspell < Formula
-  def self.available_languages
-    %w(${langs})
-  end
-end
-# END generated with `basename $0`
-EOF
-
-rm $tmp_file
-
-echo "The formulae for the aspell dictionaries have been written to\n$brew_formulae_tmp_file"

Library/Contributions/cmd/brew-aspell-dictionaries.rb

@@ -0,0 +1,36 @@
+require 'open-uri'
+require 'resource'
+require 'formula'
+
+dict_url    = "http://ftpmirror.gnu.org/aspell/dict"
+dict_mirror = "http://ftp.gnu.org/gnu/aspell/dict"
+
+resources = {}
+
+open("#{dict_url}/0index.html") do |content|
+  content.each_line do |line|
+    break if %r{^</table} === line
+    next unless /^<tr><td><a/ === line
+
+    fields = line.split('"')
+    lang, path = fields[1], fields[3]
+    lang.gsub!("-", "_")
+    resources[lang] = path
+  end
+end
+
+resources.each_pair do |lang, path|
+  r = Resource.new(lang, "#{dict_url}/#{path}")
+  r.owner = Formula.factory('aspell')
+
+  nostdout { r.fetch }
+
+  puts <<-EOS
+  resource '#{lang}' do
+    url '#{dict_url}/#{path}'
+    mirror '#{dict_mirror}/#{path}'
+    sha1 '#{r.cached_download.sha1}'
+  end
+
+EOS
+end