No submissions this week (there may have been a glitch causing this
not to have even been posted to the mailing list, so that might
explain it…)
Here’s the solution that I ended up using:
file_names = Dir['PROD_*']
compositions_found = false
compositions = Hash.new {{}}
file_names.each do |file_name|
File.read(file_name).each_line do |line|
compositions_found = false if line =~ /\/\*/
if compositions_found
line =~
/(([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+),([^,]+)/
if $2 && $2 != 'NULL'
composition = {:id => $1.to_i}
composition[:product_id] = $2.to_i if $2 && $2 != 'NULL'
composition[:component_id] = $3.to_i if $3 && $3 != 'NULL'
composition[:quantity] = $6[1...-1].to_f if $6 && $6 !=
‘NULL’
composition[:line_num] = $7.to_i if $7 && $7 != ‘NULL’
composition[:fixed] = $8.to_i if $8 && $8 != ‘NULL’
#puts composition.inspect
compositions[$1] = compositions[$1].merge(composition)
end
#puts line
else
compositions_found = true if line =~ /INSERT INTO
compositions/
end
next unless compositions_found
end
end
compositions.sort.each do |id, composition|
puts composition.inspect
end
It reads the comma separated fields using a wonky regex (please let me
know of a better way!). The output is inspected hashes that I eval in
another program to load the data back into the DB. It worked
surprisingly well.
I apologize for the late summary and any mishaps on the mailing of this
quiz.